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HomeMy WebLinkAboutAPA3432J J BEFORE THE FEDERAL ENERGY REGULATORY COMMISSION APPLICATION FOR LICENSE FOR MAJOR PROJECT SUSITNA HYDROELECTRIC PROJECT DRAFT LICENSE APPLICATION VOLUME 8 EXHIBIT E CHAPTER 2 -WATER USE AND QUALITY FIGURES ARLIS Alaska Resources Library &InformattGn Servlce~ Anchorage.Alask.a November 1985 TK (.,J,S .S 2s F47 ( li\.b .3'13.2- r ' J 1 ] ], ] ,J.',.] L '] ] ] j ] : 1 ] ;,] ] ] I VOLUME COMPARISON VOLUME NUMBER COMPARISON LICENSE APPLICATION AMENDMENT VS.JULY 29,1983 LICENSE APPLICATION JULY 29,1983 AMENDMENT APPLICATION VOLUME NO.VOLUME NO.EXHIBIT CHAPTER A Entire DESCRIPTION Project Description 1 1 B Entire Project Operation and Resource Utilization 2 2 &2A App.B1 MAP Model Documentation Report 3 2B App.B2 App.B3 RED Model Documentation Report RED Model Update 4 4 2C C Entire Proposed Construction Schedule 5 1 D E;ntire .App.D1 Project Costs and Financing Fuels Pricing 5 5 1 1 E 1 2 General Description of Locale 6 Water Use and Quality 6 5A 5A Tables Figures 7 5A 5B Figures 8 5B 3 Fish,Wildlife and Botanical 9 Resources (Sect.1 and 2) 6A 6B Fish,Wildlife and Botanical 10 Resources (Sect.3) 6A 6B Fish,Wildlife and Botanical Resources (Sect.4,5,6,&7) 11 6A 6B Socioeconomic Impacts Geological and Soil Resources 4 5 6 Historic &Archaeological Resources 12 12 12 7 7 7 Supporting Design Report 16 3 4 8 8 8 9 lOA lOB14 14 13 13 13 Aesthetic Resources Alternative Locations,Designs and Energy Sources Agency Consultation Project Limits and Land Ownership 17 Project Design Plates 15 Recreational Resources Plates Land Use 7 8 9 11 10 Bathe Entire Entire G F F ..- I"-..- .'¢' I '¢' o,8 LO LO i M ('I) 1---- il"-I i J .J } j 1 \ ) ) I , 1 , J J 1 ) J J SUMMARY TABLE OF CONTENTS SUSITNA HYDROELECTRIC PROJECT LICENSE APPLICATION SUMMARY TABLE OF CONTENTS EXHIBIT A PROJECT DESCRIPTION Title Page No. I -PR,OJECT STRUCTURES -WATANA STAGE I (**)..•...... ......A-1-2 1.1 -General Arrangement (**)···········A-I-2 1.2 -Dam Embankment (**)· · · ···..A-1-4 1.3 -Diversion (**)··· · ·•· ····· ····· · A-1-6 1.4 -Emergency Release Facilities (**)A-1-9 1.5 -Outlet Facilities (**)·· ····A-I-I0 1.6 -Spillway (**)·· ····•·A-1-13 1.7 -This section deleted ············ · A-I-15 1.8-Power Intake (**)· · · · · · · A-1-15 i 1.9-Power Tunnels and Penstocks (**)··A-1-18 1 1.10 -Powerhouse (**)····•········A-1-19 1.11 -Tailrace (**)··· · ·· · ···· · ··A-1-22 1.12 -Main Access Plan (**)·· · ··A-I-23 1.13 -Site Facilities (**)•· · · · · ····A-I-25 1.14 -Relict Channel (***)A-1-29 2 -RESERVOIR DATA -WATANA STAGE I (**)......•.. ........·A-2-1 3 -TURBINES AND GENERATORS -WATANA STAGE I (**)•..e e e A':"3-1 • • •0 0 •0 • • 0 0 0 o •0 0 • 0 D • •0 • 3.1 -Unit Capacity (**)• 3.2 -Turbines (***)• • • 3.3 -Generators (**) 3.4 -Governor System (0) · ..· . · . . .·..•0 • • 0 • A-3-1 A-3-1 A-3-1 A-3-3 4 -APPURTENANT MECHANICAL AND ELECTRICAL EQUIPMENT - WATANA STAGE I (**)........e ..•..•e ....e • • •..0 A-4-1 4.1 -Miscellaneous Mechanical Equipment (**) 4.2 -Accessory Electrical Equipment (**)••• 4.3 -SF6 Gas-Insulated 345 kV Substation (GIS)(***) A-4-1 A-4-5 A-4-12 5 -TRANSMISSION FACILITIES FOR WATANA STAGE I (0)Q •o ..•A-5-1 5.1 -Transmission Requirements (0) 5.2 -Description of Facilities (0) 5.3 -Construction Staging (0)• • • • 0 • 0 • • • • • 0 •.00 A-5-1 A-5-1 A-5-11 851014 i SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT A PROJECT DESCRIPTION A-6-1 A-6-12 A-6-13 A-6-14 A-6-17 A-6-17 A-6-18 A-6-1 A-6-2 A-6-4 A-6-6 A-6-8 A-6-10 A-6-12 Page No. • 0 ·. o 0 0 • o 0 ,0.. • • 0 • .0. • • 0 0 ·.· . . · . · . . 6.1 -General Arrangement (**)• 6.2 -Arch Dam (**)•• 6.3 -Saddle Dam (**) 6.4 -Diversion (**)• 6.5 -Outlet Facilities (**)••••••••••• 6.6 -Spillway (**)•••• 6.7 -Emergency Spillway •••••••••••••• (This section deleted) 6.8 -Power Facilities (*)• • • • • • • • ••••• 6.9 -Penstocks (**)• • • • • • • • • • • ••• 6.10 -Powerhouse and Related Structures (**)••.• 6.11 -Tailrace Tunnel (*)•• ••••••• 6.12 -Access Plan (**)•••••••••••••• 6.13 -Site Facilities (*)•••••'•••••• Title 6 -PROJECT STRUCTURES -DEVIL CANYON STAGE II (**) 7 -DEVIL CANYON RESERVOIR STAGE II (*)•~• • 0 e eGO •A-7-1 8_-.TURBINES AND GENERATORS ...DEVILCANYON-STAGE II (**.)..--•. 9.1 -scellaneous Mechanical Equipment (0)0 ._o._!.__.!..----".• ----9.2--=-Accessory Electrical Equipment (0)•.0 • • • •0 903 -Switchyard Structures and Equipment (0)•••0 •• 9 -APPURTENANT EQUIPMENT -DEVIL CANYON STAGE II (0). j ! ] ,.f ) I ..1 I ;'j J~ A-8-1 A-9-1 -~._-"_....._~---" A-9-3 A-9-6 A-11-1 A-1l-3 A-11-5 A-1l-6 A-8-1 A-8-1 A-8-1 A-8-2 A-IO-1 A-9-1 A-11-1 o • o .. ·~ ... .. .0. ... o • o 0'0 000 • 0. . ....... o 0 • 000. • • 0 0 •.,• •0 .. ii 11.1 -Genet:al Arra~geIl1ent(***) lL2 -Dam Embankmen.t-(***>0 ~-~0 ...0 • 11.3 -Diversion (***)0 0 ••••0 0 0 0 • 11.4 -Emergency Release Facilities (***).,• 8.1 -Unit Capacity (**)•••• 8.2 -Turbines (**)0 0 • 8.3 -Generators (0)•••• 8.4 -Governor System (0)••• 10 -TRANSMISSION LINES -DEVIL CANYON STAGE II (**) 11 -PROJECT STRUCTURES -WATANA STAGE III (***) 851014 SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT A PROJECT DESCRIPTION Title Page No. I 11.5 -Outlet Facilities (***)·· · · ·· · ·A-1l-6 I 11.6 -Spillway (***).··· ·· ·· · A-11-7 11.7 - Power Intake (***)· ·· · ·· · · ···A-1l-8 ) 11.8 -Power Tunnel and Penstocks (***)··· · · · A-ll-ll 11.9 -Powerhouse (***)· · · ·· · ·· · · ··A-ll-ll 11.10 -Trailrace (***)···· · · A-11-13 11.11 -Access Plan (***)· · ·· · ··'.·•·A-ll-13 11.12 -Site Facilities (***)· ·· ·· ·· · · •·A-1l-13 11.13 -Relict Channel (***)· · · ·· ··A-1l-13 • • 12 -RESERVOIR DATA -WATANA STAGE III (***)•• ••••A-12-1 13 -TURBINES AND GENERATORS -WATANA STAGE III (***)•• 13.1 -Unit Capacity (***)• • • • •••••• 13.2 -Turbines (***)• • • • • •••• 13.3 -Generators (***)• • • • • • • 13.4 -Governor System (***)•• A-13-1 A-13-1 A-13-1 A-13-1 A-13-1 14 -APPURTENANT MECHANICAL AND ELECTRICAl..EQUIPMENT - WATANA STAGE III (***)••••••••••••••••A-14-1 14.1 -Miscellaneous Mechanical Equipment (***)• • • •A-14-1 14.2 -Accessory Electrical Equipment (***)• • • •A-14-1 15 -TRANSMISSION FACILITIES -WATANA STAGE III (***) 15.1 Transmission Requirements (***)• 15.2 switching and Substations (***)• ·."A-15-1 A-15-1 A-15-1 16 -LANDS OF THE UNITED STATES o • ••G •e _0 0 •A-16-1 I ,.....• 17 -REFERENCES 851014 • • • • • • • •.'.• •e ••0 ••0 • 0 • iii A-17-1 SUMMARY TABLE OF·CONTENTS (cont'd) EXHIBIT B PROJECT OPERATION AND RESOURCE UTILIZATION l j I .\ I I j ! ,I \ 1 :! '1 i 1 B-2-1 B-3-1 B-l-l B-2-60 B-2-67 B...2....83 B-2-131 B-3-1 B-3-6 B-3-20 B-2-1 B-2-1 B-2-22 B-2-48 B-1-12 B-1-17 B-l-l B-1-4 B-1-5 Page No. . . ...••• • ••••• • • •• •••••e'• • 3.1 -Hydrology (***).'...• • • •••• • •••• 3.2 -Reservoir Operation Modeling (***)••••••• 3.3 -Operational Flow Regime Selection (***)••••• 1.1 -Previous Studies (***)•••• 1.2 -Plan Formulation.and Selection Methodology (***). 1.3 -Damsi te Selection (***)• • • • • • • • • .1.4 -Formulation of Susitna Ba.sin Development Plans (***)• • • • • • • • • •• 1.5 -Evaluation of.Basin Development Plans (***)••• 2.1 -Susitna HydroelectricDevelopment(***)...... 2.2 -Watana Project Formulation (***)••••• .2.3 -Selection of Watana General Arrangement (***) 2.4 -Devil Canyon Project Formulation (***).••• 2.5 -Selection of Devil Canyon General' Arrangement (***)• • • • • • • •~• • • 2.6 -Selection of Access Road corridor {***} -'2..7 -Selection of Transmiss i onFad~1:'itiesc ~(***)~~C 2.8 -Selection of Project Operation (***) 3 -DESCRIPTION OF PROJECT OPERATION (***) Title 2 -ALTERNATIVE FACILITY DESIGN,PROCESSES AND OPERATIONS (***)e ee eo 00 e 0 e e 0 0 " 1 -DAMSlTE SELECTION (***) 4.1 -Plant and System Operation Requirements (***) 4.2 -Power and Energy Production (***)• • • 5.1 -Introduction (***)•••••••••••••••• 5.2 -Description of the Railbelt Electric Systems (***) 5.3 -Forecasting Methodology (***)• •••• 5.4 -Forecast of Electric Power Demand (***)••••• 5 -STATEMENT OF POWER NEEDS AND UTILIZATION (***) • • • • • • • • • • • • • • • • ••• •0 • r \ J I 1 j B-7-1 B-6-1 B-5-1 B-4-1 B-4-10 B-5-1 B-5-1 B-5-17 B-5-47 • • • G o 0 000 .0. 851014 7 -REFERENCES 6 -FUTURE SUSITNA BASIN DEVELOPMENT (***) SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT B -APPENDIX BI MAN-IN-THE-ARCTIC PROGRAM (MAP) TECHNICAL DOCUMENTATION REPORT STAGE MODEL (VERSION A85.I) REGIONALIZATION MODEL (VERSION A84.CD) SCENARIO GENERATOR Title Stage Model Page No. 1.Introduction..• • • • • • • • • • •1-1 2.Economic Module Description • • • • • • • • •••2-1 3.Fiscal Module Description • • • •••• • • • • •••3-1 4.Demographic Module Description • • • • • • • • • •••4-1 5.Input Variables ••••• • •••• • • • • •••5-1 6.Variable and Parameter Name Conventions 6-1 7.Parameter Values,Definitions and Sources ••••••7-1 8.Model Validation and Properties • •••8-1 9.Input Data Sources • • • • • • • • • • • • • •••9-1 10.Progr.ams for Model Use • • • • • • • • • • • • • •••10-1 11.Model Adjustments for 'Simulation • • • • • • • • •••11-1 12.Key to Regressions • • • • • • • • • • • • • •••12-1 13.Input Data Archives ••••••• • • •••••13-1 Regionalization Model ·. 1.Model Description ·.· · · · ·· · · · ·· · · · · ·2.Flow Diagram ·· ···3.Model Inputs . .··.· · · ·· · · · · ·· · · · ··4.Variable and Parameter Names ·· ·· · ·5.Parameter Values · · · ·····6.Model Validation ··· · · · ·· · ··7.Programs for Model ·· · · · ·· · · · · ·· · · ·8.Model Listing · · ·· ·9.Model Parameters ··· · ·· · · ·10.Exogenous,Policy,and Startup Values Scenario Generator Introduction • • • • • • • • • • • • • • • 1.Organization of the Library Archives •••• 2.Using the Scenario Generator •••••••• 3.Creating,Manipulating,Examining,and Printing Library Files • 4.Model Output • • • • • • • • • • • 1 5 7 9 13 31 38 39 57 61 1 1 8 14 22 851014 v SUMMARY TABLE OF CONTENTS (cant I d) ._.~..,_.~--~.__~~_.-_.__----_.._,..-_.-'.__-~._-_.~-----'_._.'-.___..~__.._,-_._,_.--..~___-_..~..__. I J 1 J J r I I ·~'l.'.- I 'j ,1 I ! 1 ( I J 1 1.1 12.1 3.1 11.1 5.1 10.1 13.1 7.1 2.1 6.1 8.1 9.1 4.1 Page No. .. .. .'e "0 0 ... ... • 0 e 0 • • . . . • • •000 0 • 00.0 • 0 0 0 • • • • • • • vi o • • • • ... .. .0.000 0 000 0 0 0 0 8 0 .. .. • •0 • • • • • • • • 0 • EXHIBIT B -APPENDIX B2 RAILBELT ELECTRICITY DEMAND (RED)MODEL TECHNICAL DOCUMENTATION REPORT (1983 VERSION) 13 -MISCELLANEOUS TABLES 10 -LARGE INDUSTRIAL DEMAND 11 -THE PEAK DEMAND MODULE 12 -MODEL VALIDATION • • 5 -THE RESIDENTIAL CONSUMPTION MODULE • 1 -INTRODUCTION 2 -OVERVIEW • • Title 3 -UNCERTAINTY MODULE • 851014 7 -PRICE ELASTICITY ririri.riii ...• • 8 -THE PROGRAM-INDUCED CONSERVATION MODULE 6 -THE BUSINESS CONSUMPTION MODULE 9 -THE MISCELLANEOUS MODULE 4 -THE HOUSING MODULE SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT B -APPENDIX B3 RAILBELT ELECTRICITY DEMAND (RED)MODEL CHANGES MADE JULY 1983 TO AUGUST 1985 1 -INTRODUCTION Title 2 -RED MODEL PRICE ADJUSTMENT REVISIONS 6 -EFFECT OF THE MODEL CHANGES ON THE FORECASTS Page No. 1.1 2.1 3.1 4.1 5.1 6.1. .. • •0 • • • •0 • ... . . . .'.5 -PEAK DEMAND 4 -BUSINESS SECTOR 3 -RESIDENTIAL CONSUMPTION MODULE I I LJ 851014 vii .\ j SUMMARY TABLE OF CONTENTS (cont'd) 3.1 -Access (***)• • • • • • • • • • •C-3-1 3.2 -Site Facilities (***)• • • • • • • • •C-3-1 .3.3.~Dam..Embankment(*~)••••••.•••••..C-3..L .._.._~_.~3 .4:::.s'Ri llway.and ..lntakes (***)~___._"-.•_._"-.•_~C 3.~2.. 3.5 -Powerhouse and Other Underground Works (**)•C-3-2 3.6 -Relict Channel (***)••••••••••••C-3-2 3.7 -Transmission Lines/Switchyards (***)C-3-2 3.8 -General (***)• • • • • • • • • • • • •••C-3-2 EXHIBIT C PROPOSED CONSTRUCTION SCHEDULE .l \ 1 l' 1 I .j I \ ! I J j l 1 1 1 C-3-1 C-2-1 C-1-2 C-1-2 C-1-2 C-I-2 C-1-3 C-1-3 C-1-3 C-1-3 C-1-3 C-1-1 C-4-1 Page No. C-2-1 C-2-1 C-2-1 .C-2-1 C-2-2 ....C-2-2 C-2-2 C-2-2 .... .. .. ..., .. . . . ••e 0 0 • o •Q • ·.. ·. .,.... .... .. e •0 0 • •e • • • .,.. viii 1.1 -Access (*).• • • • • • • • ••••• 1.2 -Site Fad li ties (**)• • • • • • • 1.3 -Diversion (**)••••••••••••••• 1.4 -Dam Embankment (**)• • ••••••••• 1.5 -Spillway and Intakes (**)• ••• 1.6 -Powerhouse and Other Underground Works (**)• 1.7 -Relict Channel (**)••••••••••••• 1.8 -Transmission Lines/Switchyards (*) 1.9 General (**)••••••••••••• 2.1 -Access (**)•••••• 2.2 -Site Facilities (**)••••••••••• 2.3 -Diversion (*)• 2.4 -Arch Dam (**)••••••••• 2.5 -Spillway and Intake (*)•. 2-.6 -Powerhouse and Other Underground Works (0) 2.7 -Transmission Lines/Switchyards (*)•••• 2.8 -General (*)••••••••.•• Title 851014 1 -WATANA STAGE I SCHEDULE (**)................,.. 2 -DEVIL CANYON STAGE II SCHEDULE (**).. 3 -WATA~STAGE III SCHEDULE (***)., 4 -EXISTING TRANSMISSION SYSTEM (***) SUMMARY TABLE OF CONTENTS (eont'd) EXHIBIT D PROJECT COSTS AND FINANCING Title Page No. 1 -ESTIMATES OF COST (**)• • • • • • • • • • • • •0 • •D-1-1 1.1 -Construction Costs (**)••.•••. 1.2 -Mitigation Costs (**)••••• 1.3 -Engineering and Administration Costs (*)••.. 1.4 -Operation,Maintenance and Replacement Costs (**) 1.5 -Allowance for Funds Used During Construction (AFDC)(**)• • • • • • 1.6 -Escalation (**)•••..••••.••.•• 1.7 -Cash Flow and Manpower Loading Requirements (**). 1.8 -Contingency (*)••.'•••••.••.••••• 1.9 -Previously Constructed Project Facilities (*) D-1-1 D-1-6 D-1-7 D-I-10 D-l-ll D-1-12 D-1-12 D-1-13 D-l-13 2 -EVALUATION OF ALTERNATIVE EXPANSION PLANS (***)••• • D-2-1 .. 2.1 -General (***)•••.•.•••••••.• 2.2 -Hydroelectric Alternatives (***)•••• 2.3 -Thermal Alternatives (***).•. 2.4 -Natural Gas-Fired Options (***). • • 2.5 -Coal-Fired Options (***)•••.• 2.6 -The Existing Railbelt Systems (***)•..•••. 2.7 -Generation Expansion Before 1996 (***)•• 2.8 -Formulation of Expansion Plans Beginning in 1996 (***)••••.•••••••• • 2.9 Selection of Expansion Plans (***) 2.10 -Economic Development (***).••.••• 2.11 -Sensitivity Analysis (***)•• 2.12 -Conclusions (***)•••• D-2-1 D-2-1 D-2-10 D-2-10 D-2-19 D-2-24 D-2-27 D-2-28 D-2-33 D-2-39 D-2-44 D-2-46 3 -CONSEQUENCES OF LICENSE DENIAL (***)• 0 S e 0 eo.•D-3-1 D-3-1 D-3-1 D-4-1 • •GO. 3.1 Statement and Evaluation of the Consequences of License Denial (***)...... 3.2 -Future Use of the Damsites if the License is Denied (***) FINANCING (***)• • • • • • • • • • • • • • • • •0 0 •4 - I J 4.1 -General Approach and Procedures (***) 4.2 -Financing Plan (***)• • 4.3 -Annual Costs (***)••.••• D-4-1 D-4-1 D-4-3 851014 ix SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT D PROJECT COSTS AND FINANCING Title 4.4 -Market Value of Power (***)• 405 -Rate Stabilization (***) 4.6 -Sensitivity of Analyses (***) • •II • • • Page No. D-4-4 D-4-4 D-4-4 5 -REFERENCES (***) 851014 . . 0. • . .e • • •~•eo..0. x D-5-1 I ? 1 \ ! .j l J '! ! l .1 I j SUMMARY TABLE OF CONTENTS (cont'd) ExHIBIT D -APPENDIX Dl FUELS PRICING Title 1 -INTRODUCTION (***).................. Page No. D1-1-1 2 -WORLD OIL PRICE (***)• •... .........•••Dl-2-1 2.1 -The Sherman H.Clark Associates Forecast (***) 2.2 -The Composite Oil Price Forecast (***)••••• 2.3 -The Wharton Forecast (***)••••• • D1-2-1 Dl-2-2 Dl-2-5 3 -NATURAL GAS (***)• • •••• • • • • • •e 0 0 • •••D1-3-1 3.1 -Cook Inlet Gas Prices (***)•••••• 3.2 -Regulatory Constraints on the Availability of Natural Gas (***)• • • • • • • • • • • • • 3.3 -Physical C9nstraints on the Availability of Cook Inlet Natural Gas Supply (***)• • • • • 3.4 North Slope Natural Gas (***)••••••• Dl-3-1 D1-3-10 Dl-3-12 "DI-3-20 4 -COAL (***)• • • • • •0 0 0 0 • • • 0 C • 0 • • •e 0 Dl-4-l 4.1 4.2 4.3 4.4 -Resources and Reserves (***)••• -Demand and Supply (***)• • • • • • • • -Present and Potential Alaska Coal Prices (***) -Alaska Coal Prices Summarized (***)••••• Dl-4-1 DI-4-3 D1-4-4 Dl-4-10 5 -DISTILLATE OIL (***)• • • • • • • ••~0 0 &~0 G e DI-5-1 5.1 -Availability (***) 5.2 -Distillate Price (***) • • 0 0 0 0 0 0 0 0 Dl-5-1 Dl-5-1 6 -REFERENCES 851014 • • • • • • • • • • • • •e ~c 0 ~0 ••0 xi D1-6-1 SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 1 GENERAL DESCRIPTION OF THE LOCALE • 0 ••0 • 0 • 0 E-1-1-1 E-1-1-1 E-1-1-2 Page No. • ••o •0.0. • 0 • 0 • ••e 1.1 -General Setting (**) 1.2 -Susitna Basin (*) Title 1 -GENERAL DESCRIPTION (*)• • • 2 -REFERENCES • • • • • •c • ••GO.0 0 eo.•G • 0 E-1-2-1 3 -GLOSSARY • •o •"o •0 •"...."8 eo.0 0 ••E-1-3-1 1) \ I" I i 1 1 ! J J 1 1 ci SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY Title Page No. • • • •• ••• ••• •• E-2-2-1 E-2-1-1 • ••·.••••• ·.••·.1 -INTRODUCTION (**)• • • • • 2 -BASELINE DESCRIPTION (**) 2.1 -Susitna River Morphology (**)··· · ·E-2-2-3 2.2 -Susitna River Water Quantity (**)·· · ·· · · · E-2-2-12 2.3 -Susitna River Water Quality (**)•·· · E-2-2-19 2.4 -Baseline Ground Water Conditions (**)·· · E-2-2-46 2.S -Existing Lakes,Reserv~irs,and Streams (**)E-2-2-49 '2.6 -Existing Instream Flow Uses (0)·E-2-2-S0 2.7 -Access Plan (**).·· · · ··· ·· · •E-2-2-63 2.8 -Transmission Corridor (**).•·E-2-2-64 3 -OPERATIONAL FLOW REGIME SELECTION (***)•• •• ••• • E-2-3-1 3.1 -Project Reservoir Characteristics (***)••• 3.2 -Reservoir Operation Modeling (***)•.••• 3.3 -Development of Alternative Environmental Flow Cases (***)•••••••••••••••• 3.4 -Detailed Discussion of Flow Cases (***)'.• • • . 3.S -Comparison of Alternative Flow Regimes (***). 3.6 -Other Constraints on Project Operation (***) 3.7 -Power and Energy Production (***)••.•• E-2-3-1 E-2-3-2 E-2-3-6 E-2-3-17 E-2-3-37 E-2-3-43 E-2-3-S3 4 -PROJECT IMPACT ON WATER QUALITY AND QUANTITY (**)• • • E-2-4-1 4.1 -Watana Development (**)•· · · · · · · · · ·E-2-4-7 4.2 -Devil Canyon Development (**)··· · ··E-2-4-110 4.3 -Watana Stage III Development (***).•·· ··E-2-4-160 4.4 -Access Plan (**).· ··· ····E-2-4-211 'S -AGENCY CONCERNS AND RECOMMENDATIONS (**)• ••• •••E-2-S-1 6 -MITIGATION,ENHANCEMENT,AND PROTECTIVE MEASURES (**)•E-2-6-1 6.1 -Introduction (*)•••••••••••••••• 6.2 -Mitigation -Watana Stage I -Construction (**) 6.3 -Mitigation -Watana Stage I -Impoundment (**). E-2-6-1 E-2-6-1 E-2-6-S 8S1014 xiii SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY Title 6.4 -Watana Stage I Operation (**)• • • • • • • • 6.5 -Mitigation -Devil Canyon Stage II - Construction (**)• • • • • • • 6.6 -Mitigation -Devil Canyon Stage II - Impoundment (**)•••••••• • • • • • 6.7 -Mitigation -DevilCanyon/Watana Operation (**) 6.8 -Mitigation -Watana Stage III - Construction (***)••••••••.•••• 6.9 -Mitigation -Watana Stage III - Impoundment/Construction (***)••••••••• 6.10 -Mitigation -Stage III Operation (***)• 6.11 -Access Road and Transmission Lines (***)•• 7 -REFERENCES 8 -GLOSSARY •e • •0 • •••.0.• • • 0 • •0 e 0 0 • • ••• • • •0 • • 0 •0 ••e 0 e e 0 0 0 Page No. E-2-6-7 E-2-6-l3 E-2-6-l3 E-2-6-13 E-2-6-15 E-2-6-l6 E-2-6-l6 E-2-6-18 E-2~7-l E-2-8-l 851014 xiv SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 3 FISH~WILDLIFE~AND BOTANICAL RESOURCES Title 1 -INTRODUCTION (0). . .. . .· .... . Page No. E-3-l-l 1.1 -Baseline Descriptions (0) 1.2 -Impact Assessments (*) 1.3 -Mitigation Plans (*) · ..... • • • • 0 0 • E-3-l-l E-3-l-l E-3-l-3 2 -FISH RESOURCES OF THE SUSITNA RIVER DRAINAGE (**)....•E-3-2-l · . ·. ·. . 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 -Overview of the Resources (**)•••• -Speci,es Biology and Habitat Utilization in the Susitna River Drainage (*)•••• -Anticipated Impacts To Aquatic Habitat (**)••• -Mitigation Issues and Mitigating Measures (**) -Aquatic Studies Program (*)• • • • • • -Monitoring Studies (**)•••••.•••• -Cost of Mitigation (***)•••"••••••• -Agency Consultation on Fisheries Mitigation Measures (**)• • • • • • • • • • • • E-3-2-l E-3-2-l4 E-3-2-l04 E-3-2-244 E-3-2-279 E-3-2';"280 E-3-2-303 E-3-2-304 • ••• ••••• ••••• • 3 -BOTANICAL RESOURCES (**) 3.1 -Introduction (*)••• 3.2 -Baseline Description (**) 3.3 -Impacts (**)•••• 3.4 -Mitigation Plan (**) . . .. . ."0 0 • • • • • 0 • • • "E-3-3-l E-3-3-l E-3-3-6 E-3-3-34 E-3-3-63 4"-WILDLIFE (**).•..........••••••........co ......E-3-4-l ·... ...·...4.1 4.2 4.3 4.4 -Introduction (*)•.•••..• -Baseline Description (**)• •..• • -Impacts (*). •..• • • • • • . -Mitigation Plan (**)•••• · . · ..· . E-3-4-l E-3-4-3 E-3-4-110 E-3-4-248 5 =AIR QUALITY/METEOROLOGY (***)..•• •0 • • • • •.... ..E-3-5-l 5.1 -Introduction (***)•••••••••• 5.2 -Existing Conditions (***)• 5.3 -Expected Air Pollutant Emissions (***). 5.4 -Predicted Air Quality Impacts (***)... · . . . .· . ....·. . . . E-3-5-1 E-3-5-l E-3-5-2 E-3-5-3 851014 xv '"J.! E-3-6-1 E-3-7-1 E-3-5-3 Page No. ..• ••••••• •••...... METHODS USED TO DETERMINE MOOSE BROWSE UTILIZATION AND CARRYING CAPACITY WITHIN THE MIDDLE SUSITNA BASIN STATUS AND RELATIVE ABUNDANCE OF BIRD SPECIES OBSERVED ON THE LOWER SUSITNA BASIN DURING GROUND SURVEYS CONDUCTED JUNE 10 THE JUNE 20,1982 STATUS,HABITAT USE AND RELATIVE ABUNDANCE OF BIRD SPECIES IN THE MIDDLE SUSITNA BASIN --'-~-"--""'---~-.""'-'-"-"'.-._.-.-.-.--".-..'_.__. SCIENTIFIC NAMES OF MAMMAL SPECIES FOUND IN THE EXISTING AIR QUALITY AND METEOROLOGICAL CONDITIONS EXPLANATION AND JUSTIFICATION OF ARTIFICIAL NEST MITIGATION (THIS SECTION-HASBEetfn£LETED) PERSONAL COMMUNICA.TIONS(THIS SECTION HAS BEEN DELETED) FISH AND WILDLIFE MITIGATION POLICY ENVIRONMENTAL GUIDELINES MEMORANDUM (THIS APPENDIX HAS BEEN DELETED) PLANT SPECIES IDENTIFIED IN SUMMERS OF 1980 AND 1981 IN THE UPPER AND MIDDLE SUSITNARlVER BASIN,THE DOWNSTREAM FLOODPLAIN,AND THE INTERTIE • • • PRELIMINARY LIST OF PLANT SPECIES IN THE INTERTIE AREA (THIS SECTION HAS BEEN DELETED AND ITS -INFORMATION INCORPORAT-ED-INTO~AFcPENDIXE3.3.) • • • • • • • • • • 0 • • ••• • ••••• • 5.5 -Regulatory Agency Consultations (***)•• E8.3 SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 3 FISH,WILDLIFE,AND BOTANICAL RESOURCES E9.3 E10.3 Ell.3 E1.3 E2.3 E5.3 E6.3 APPENDICES E4.3 Title E3.3 7 -GLOSSARY 6 -REFERENCE • SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 4 HISTORIC AND ARCHEOLOGICAL RESOURCES Title 1 -INTRODUCTION AND SUMMARY (**)•............ Page No. E-4-1-1 1 ..1 -Program Objectives (**) 1.2 -Program Specifics (**) 2 -BASELINE DESCRIPTION (**)• • • ••• • ...• ••• • E-4-1-4 E-4-1-4 E-4-2-1 .... 2.1 -The Study Area (**)••••••••••••• 2.2 -Methods -Archeology and History (**)••.••• 2.3 -Methods -Geoarcheology (**)•••.••• 2.4 -Known Archeological and Historic Sites in the Project Area (**) 2.5 -Geoarcheology (**)•••••••••••• .E-4-2-1 E-4-2-2 E-4-2-10 E-4-2-12 E-4-2-13 3 -EVALUATION OF AND IMPACT ON HISTORICAL AND ARCHEOLOGICAL SITES (**)•••••• • •• ••• • E-4-3-1 3.1 -Evaluation of Selected Sites Found: Prehistory and History of the Middle Susitna Region (**)• • • • • • • • • • • • • • • 3.2 -Impact on Historic and Archeological Sites (**)• E-4-3-1 E-4-3-4 4 -MITIGATION OF IMPACT ON HISTORIC AND ARCHEOLOGICAL SITES(**)• • • • • • •••••• • • ..E-4-4-1 4.1 -Mitigation Policy and Approach (**)•••• 4.2 -Mitigation Plan (**)••••••••• E-4-4-1 E-4-4-2 5 -AGENCY CONSULTATION (**)• • • • • • •e e _ • • • • •E-4-5-1 6 -REFERENCES • • • • • • • • • • • • • •~G 0 e 00.•E-4-6-1 7 -GLOSSARY 851014 • • • • • • • • • • • • • • • • •eo.• • • xvii E-4-7-1 SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 5 SOCIOECONOMIC IMPACTS 2.1 -Identification of Socioeconomic Impact Areas (**)• • • • • • • • • •••• • • • 2.2 -Description of Employment,Population,Personal Income and Other Trends in the Impact.Areas (**) 'j I 1 \ ] 1 J 1 .1 :J i 1 l J j \ J E-5-3-49 E-5-3-65 E-5-2-l E-5-3-35 E-5-3-39 E-5-4-2 E-5-3-2 E-5-4-1 E:;5:;4,';;;r--... E-5-4-1 E-5-4-2 E-5-3-32 E-5-3-1 E-5-3-59 E-5-2-1 E-5-2-1 E-5-1-1 Page No. · . · . • • o • • ... • 0 • • .,0 .,•• •• o • • · . ·. . . • 0 . . ••• • 0 • • • • • • • • • • • • 0 • • o .0. o • 3.1 -Impact of In-migration of People on Governmental Facilitie~and Services (**L....••.••. 3.2 -On-site Worker Requirements and Payroll, by Year and Month (**)••••••••••••• 3.3 -Residency and Movement of Project Construction Personnel (**). • • . • • • . . • •• 3.4 -Adequacy of Available Housing in Impact Areas ~***)•.••••.••••. 3.5 -Di splacementandIJ:!fl1Jen_C;~$_QJLR~$idenGesand__...B~sinesses-(**>-.. . . . . . .". . . . 3.6 -Fiscal Impact Analysis:Evaluation of Incremental Local Government Expenditures and Revenues (**)• • • • • • • • • • • ••• 3.7 -Local arid Regional Impacts on Resource User Groups (**)• • • • • • • • • • BASELINE DESCRIPTION (**)0 --4-;1-.----Int ro-du'c-ti-on-{**)·.• • • • • • • •.'• 4.2 -Background and Approach (**)• • • 4.3 -Attitudes Toward Changes (This section deleted) 4.4 -Mitigation Objectives and Measures (**) Title 2 1 -INTRODUCTION (**)0 0 0 0 0 3 -EVALUATION OF THE IMPACT OF THE PROJECT (**) 4 -MITIGATION (**)• • • •0 • • • • • ...........................__. 851014..................:leviii 1 \ SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 5 SOCIOECONOMIC IMPACTS Title 5 -MITIGATION MEASURES RECOMMENDED BY AGENCIES(**).... Page No. E-5-5-1 E-5-5-2 E-6-6-1 E-5-5-l E-5-5-1 E-5-5-2 . .. • • • • • • • • • • • • • • • • • • 0 • 0 0 5.1 -Alaska Department of Natural Resources (DNR)(**) 5.2 -Alaska Department of Fish and Game (ADF&G)(*) 5.3 -U.S.Fish and Wildlife Service (FWS)(*) 5.4 -Summary of Agencies'Suggestions for Further Studies that Relate to Mitigation (**) 6 -REFERENCES \1I '1--1 851014 xix SUMMARY TABLE OF -CONTENTS -(cont 'd) 2.1 -Regional Geology (*)·•·E-6-2-1 2.2 -Quarternary Geology (*)·· · · · · · •· · · · · E-6-2-2 2.3 -Mineral Resources (0)· · •· ·· · E-6-2-3_ 2.4 -Seismic Geology (*>.· · · · •· · · ·•·· · E-6-2-4 2.5 -Watana Damsite (**)·• •·· · · · · ·E-6-2-11 2.6 -Devil Canyon Damsite (0)· · •· · · · ··E-6-2-17 2.7 -Reservoir Geology (*)·· · · · · ·•·E-6-2-23 4.1 -Impacts and Hazards (0)• • • • • • • • •••E-6-4-1 4.2 -Reservoir-Induced Seismicity (0)••••••E-6-4-1 4.3 -Seepage (**).• • • • • • • • • • • • • •••E-6-4-2 4.4 ...Reservoir SlopeFailures(**).•..0 .-.E...6...4...2 ...A.5..::.._.Pe rmaf ro st .._Thaw_(**L......tL....L .•...•_..'-_"-_•._.____....•..o.....E.::.6-4-3_._._.__ 4.6 -Seismically-Induced Failure (*)0 • 0 • • • •E-6-4-3 4.7 -Geologic Hazards (*).0 0 • • •E-6-4-4 4.8 -Borrow and Quarry Sites (*)• • • •0 •E-6-4-4 I ! ( E-6-3-1 E-6-4-1 E-6-2-1 Page No. E-6-3-1 E-6-3-4 E-6-3-4 E-6-3-11 E-6-3-11 E-6-3-H-- E-6-3-12 E-6-1-1 ••.0 ·.. •• • o 0 •Cl ·.... ••• co • • • •• • • •••••••• o • • •0 • 000 4;11 ·.. . . . . (*)•• • • • 0 • 000 0 ~0 EXHIBIT E -CHAPTER 6 GEOLOGICAL AND SOIL RESOURCES 3.1 -Reservoir-Induced Seismicity (RIS)(*) 3.2 -Seepage (*)• • • • • • • • • • • • • • 3.3 -Reservoir Slope Failures (**)• • • • • • • ••• 3.4 -Permafrost Thaw (*)•••••••••• 3.5 -Seismtcally-Induced Failure (*)••••• 3.6 -Reservoir Freeboard for WindWaves(·**)••-••0 3.7 -Development of Borrow Sites and Quarries (**) 3 -IMPACTS (*)• • Title 1 -INTRODUCTION (**) 2 -BASELINE DESCRIPTION 4 -MITIGATION (**)• 5 -REFERENCES 6 -GLOSSARY 851014 • • 0 v •••CD " ..0. ..0 • • o 0 0 eo.• • • e 0 Q eo.0 0 • xx •co • 0 ·... co ..co E-6-5-1 E-6-6-1 \ J 1 1 1 SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 7 RECREATIONAL RESOURCES ,. Title 1 -INTRODUCTION (**)•...·.• • • • ....•••·..... .. Page No. E-7-1-1 1.1 -Purpose (**) 1.2 -Relationships to Other Reports (*) 1.3 -Study Approach and Methodology (**) 1.4 -Project Description (**)••••• 2 -DESCRIPTION OF EXISTING AND FUTURE RECREATION WITHOUT THE SUSITNA PROJECT (**).. 2.1 -Statewide and Regional Setting (**) 2.2 -Susitna River Basin (**)••••• fI • • • · . . E-7-1-1 E-7-1-1 E-7-1-1 E-7-1-3 E-7-2-1 E-7-2-1 E-7-2-8 3 -PROJECT IMPACTS ON EXISTING RECREATION (**)•·.... ....E-7-3-1 .3.1 -Direct Impacts of Project Features (**) 3.2 -Project Recreational Demand Assessment • • • (Moved to Appendix E4.7) E-7-3-1 E-7-3-12 4 -FACTORS INFLUENCING THE RECREATION PLAN (**)G • • •CD E-7-4-1 4.1 -Characteristics of the Project Design and Operation (***)· ·· · ·•· · · · ·· · · · •·E-7-4-1 4.2 -Characteristics of the Study Area (***)· ··E-7-4-2 4.3 -Recreation Use Patterns and Demand (***)·•· · E-7-4-2 4.4 -Agency,Landowner and Applicant Plans and Policies (***)· ·· · · •·· · · ·· · · ·· · E-7-4-3 4.5 -Public Interest (***)· · ·· · · · · •· · ···.E-7-4-12 4.6 -Mitigation of Recreation Use Impacts (***)·•·E-7-4-13 5 -RECREATION PLAN (**)• • • •• •••••• • • ••••E-7-5-1 It 0 00.· .. I IiJ 5.1 -Recreation Plan Management Concept (***) 5.2 -Recreation Plan Guidelines (***) 5.3 -Recreational Opportunity Evaluation (Moved to Appendix E3.7.3) 5.4 -The Recreation Plan (**) ·. E-7-5-1 E-7-5-2 E-7-5-4 E-7-5-4 6 -PLAN IMPLEMENTATION (**) 851014 • • • • • • •.0.•0 • • • xxi E-7-6-1 SUMMARY TABLE OF CONTENTS (cont'd) '} j ! J 1 J j j .1 l--- I 1 1 J I \ J j } ! E~7-10-1 E-7-8-1 E-7-7-1 E-7-7-1 E-7-7-2 E-7-8-1 E-7-8-1 E-7-8-1 E-7-8-2 E-7-7-1 E-7-9-1 E-7-6-1 E-7-6-1 E-7-6-2 E-7-6-3 Page No. • 0 . . •0 0 0 ••0 • .... ... .. eo..~0 0 0•• • • •$• • •0 •~• ••.••• •• xxii RECREATION SITE INVENTORY AND OPPORTUNITY EVALUATION EXAMPLES OF TYPICAL RECREATION FACILITY DESIGN STANDARDS FOR THE SUSITNA PROJECT_.-_.-_..-"",.--"".._..'. PHOTOGRAPHS OF SITES WITHIN THE PROJECT RECREATION STUDY AREA PROJECT RECREATIONAL DEMAND ASSESSMENT • •• • •• DATA ON REGIONAL RECREATION FACILITIES .._.ATTRACTIVE-FEATURES--~INVENTORY DATA-- EXHIBIT E -CHAPTER 7 RECREATIONAL RESOURCES 7.1 -Construction (**)• • • • • • •••• 7.2 -Operations and Maintenance (**)••••••• 7.3 -Monitoring (***)•••••••••••• 8.1 -Agencies and Persons Consul ted (**)• 8.2 -Agency Comments (**)•••••• 803 -Native Corporation Comments (,***)••• 8.4 -Consultation Meetings (***)•0 •••0 6.1 -Phasing (**)•••••••••• 6.2 -Detailed Recreation Design (***) 6.3 -Operation and Maintenance (***)•• 6.4 -Monitoring (**)• '•••••••••••• E3.7 APPENDICES E5.7 El.7 851014 10 -GLOSSARY • E6.7 E407 Title 7 -COSTS FOR CONSTRUCTION AND OPERATION OF THE PROPOSED ~CREATION FACILITIES (**)•••••••••••• 8 -AGENCY COORDINATION (**) 9 -"REFERENCES SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 8 AESTHETIC RESOURCES Title Page No. 1 -INTRODUCTION (**)•• • • • • ·.0.•••••••• • E-8-1-1 1.1 -Purpose (*)•••••••• 1.2 -Relationship to Other Analyses (*) 1.3 -Environmental Setting (**)••••·. E-8-1-1 E-8-1-1 E-8-1-1 • • • • • • • • • • • • 0 e .0. 2 -PROCEDURE (*)• • • • 3 -STUDY OBJECTIVES (*) • • • • 0 ••••• • • • • • ••E-8-2-1 E-8-3-1 • • • • • • • • • • • • • 0 • • 4 -PROJECT FACILITIES (*)E-8-4-1 4.1 -Watana.Project Area (*)· · · · •·•·•.E-8-4-1 4.2 -Devil Canyon Project Area (*)·•··· · · · E-8-4-1 4.3 -Watana Stage III Project Area (***)· · · ·E-8-4-1 4.4 -Denali Highway to Watana Dam Access Road (*)E-8-4-1 4.5 -Watana Dam to Devil Canyon Dam Access Road (*)E-8-4-2 4.6 -Transmission Lines (*)·•· · · · •·E-8-4-2 4.7 -Intertie ...··. .•.·•.....· · E-8-4-2 (This section deleted) 4.8 -Recreation Facilities and Features (*)··•E-8-4-2 5 -EXISTING LANDSCAP~(**)••• •••• ••••• • •• • E-8-5-1 5.1 -Landscape Character Types (*) 5.2 -Notable Natural Features (**) ·..· . . ..E-8-5-1 E-8-5-1 6 -VIEWS (**)• •• • • ••••• •• • •••• •••• • E-8-6-1 6.1 -Viewers (***) 6.2 -Visibility (***) o •0 • • • • • • •".·.... . . . . . ... .. . E-8-6-1 E-8-6-1 7 -AESTHETIC EVALUATION RATINGS (**)• • 0 •• • • 0 •• • E-8-7-1 J I _I 7.1 -Aesthetic Value Rating (*) 7.2 -Absorption Capability (*) 7.3 -Composite Ratings (**) o • • • • o • • • E-8-7-1 E-8-7-1 E-8-7-2 .851014 xxiii SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 8 AESTHETIC RESOURCES Title Page No. 1 j I ] 8 -AESTHETIC IMPACTS (**)• •0 • • •.0.0 ••0 • • •E-8-8-1 I] SITE PHOTOS WITH SIMULATIONS OF PROJECT FACILITIES I ] '-1 J ] ] .j 1 1 J j 1 '! E-8-10-1 E-8-9-1 E-8-12-1 E-8:-11-1 E-8-11-1 E-8-11-1 E-8-9-1 E-8-9-2 E;...8-9-11 E-8-9-12 E-8-8-1 E-8-8-2 E-8-8-3 E-8-8-4 E-8:-8-5 E-8-8-6 • •• ·..·.. . . • • • • 0 ••• •• · .·. ·. . • • • • •••0 • DO.• • 0 •• o • • •• • • • 0 • • • 0 ·..(**)• • •0 ••o.• • • • • • • • • • •• • • • • • • • •0 0 • •• •• • •0 • • ••• • .. xxiv EXCEPTIONAL NATURAL FEATURES EXAMPLES OF EXISTING AESTHETIC IMPACTS PHOTOS OF PROPOSED PROJECT FACILITIES SITES • • 11.1 -Agencies and Persons Consulted 11.2 -Agency Comments (**)•••• 8.1 -Mitigation Planning of Incompatible Aesthetic Impacts (Now addressed in Section 9) 8.2 -Watana Stage I (***)•••• 8.3 -Devil Canyon Stage II (***)~•••• 8.4 -Watana Stage III (***).••••••••••••• 8.5 -Access Routes (***)••••••••••••••• 8.6 -Transmission Facilities (***)• • • • • • 9.1 -Mitigation Feasibility (**)••• 9.2 -Mitigation Plan (***)••• 9.3 -Mitigation Costs (**)•••••• 9.4 -Mitigation Monitoring (***)••• -GLOSSARY E2.8 EL8 8510 11 -AGENCY COORDINATION (**)• 12 -REFERENCES • E4.8 APPENDICES 10 -AESTHETIC IMPACT EVALUATION OF THE INTERTIE -(This.SectionDelected) 9 -MITIGATION (**)• • • • • • • Title SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 8 AESTHETIC RESOURCES Page No. IJ APPENDICES (cont'd) EXAMPLES OF RESERVOIR EDGE.CONDITIONS SIMILAR TO THOSE ANTICIPATED AT WATANA AND DEVIL CANYON DAMS PROJECT FEATURES IMPACTS AND CHARTS GENERAL AESTHETIC MITIGATION MEASURES APPLICABLE TO THE PROPOSED PROJECT LANDSCAPE CHARACTER TYPES OF THE PROJECT AREA AESTHETIC VALUE AND ABSORPTION CAPABILITY RATINGS 851014 xxv SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 9 LAND USE III III • 0 Title 1 -INTRODUCTION (***)...... ...... .... .... .. 2 -HISTORICAL AND PRESENT LAND USE (***) ...... .... .... Page No. E-9-1-1 E-9-2-1 ] j 4 -IMPACTS ON LAND USE WITH AND WITHOUT THE PROJECT (***).. AR.EA.(***)• •.••0 0'• • • • • •e .0 .e 3 -LAND MANAGEMENT PLANNING IN THE PROJECT E-9-4-1 E-9-5-1 E-9-3-1 E-9-2-1 E-9-2-1 E-9-6-1 .... .. .. • •• • • •III It III ...... ...... • • • •e •0 .. .... o • •0 0 ...... ...... •'.Q".. ...,.. .... .. .. • • • • 2.1 -Historical Land Use (***) 2.2 -Present Land Use (***) 5 -MITIGATION (***) 6 -REFERENCES xxvi IJ SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 10 ALTERNATIVE LOCATIONS,DESIGNS,AND ENERGY SOURCES Title Page No. 1 -ALTERNATIVE HYDROELECTRIC SITES (*)•••••••• • • E-10-1-1 ,.1.1 -Non-Susitna Hydroelectric Alternatives (*) 1.2 -Assessment of Selected Alternative Hydroelectric Sites (***)•••••• 1.3 -Middle Susitna Basin Hydroelectric Alternatives (0)•••••••• 1.4 -Overall Comparison of Non-Susi tna Hydroelectric Alternatives to the Proposed Susitna Project (***) E-10-1-1 E-10-1-2 E-10-1-17 E-10-1-32 2 -ALTERNATIVE FACILITY DESIGNS (*)o ••0 eo.••••E-1O-2-1 2.1 2.2 2.3 2.4 2.5 -Watana Facility Design Alternatives (*)••••• -Devil Canyon Facility Design Alternatives (0) -Access Alternatives.(0)•••'•••••• -Transmission Alternat1ves (0)•• -Borrow Site Alternatives (**) E-10-2-1 E-10-2-3 E-10-2-4 E-10-2-24 E-10-2-53 3 -OPERATIONAL FLOW REGIME SELECTION (***)••• ••• ••E-10-3-1 3.1 -Project Reservoir Characteristics (***) 3.2 -Reservoir Operation Modeling (***) 3.3 -Development of Alternative Environmental Flow Cases (***)••••••••••••• 3.4 -Detailed Discussion of Flow Cases (***)• 3.5 -Comparison of Alternative Flow Regimes (***) 3.6 -Other Constraints on Project Operation (***) 3.7 -Power and Energy Production (***)•••••• ·. ·. E-10-3-1 E-10-3-2 E-10-3-6 E-10-3-17 E-IO-3-38 E-IO-3-43 E-IO-3-53 4 '"':'ALTERNATIVE ELECTRICAL ENERGY SOURCES (***)0 00. •0 E-10-4-1 4.1 -Coal-Fired Generation Alternatives (***)•••• 4.2 -Thermal Alternatives Other Than Coal (***) 4.3 -Tidal Power Alternatives (***)•••• 4.4 -Nuclear Steam Electric Generation (***) 4.5 -Biomass Power Alternatives (***) 4.6 -Geothermal Power Alternatives (***)•••.• E-lO-4-1 E-lO-4-27 E-lO-4-39 E-lO-4-41 E-lO-4-42 E-lO-4-42 851014 xxvii Title SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 10 ALTERNATIVE LOCATIONS ,DESIGNS,AND ENERGY SOURCES 4.7 -Wind Conversion Alternatives (***)••••• 4.8 -Solar Energy Alternatives (***)••••••• 4.9 -Conservation Alternatives (***)• • ••• ] I 1 J J ,:1 j I 1 11 J 'l 'j J '] ,j , J l J ] E-lO-6-l E-lO-5-l E-lO-7-l E-lO-4-43 E-IO-4-44 E-lO-4-44 Page No. .. xxviii • • •G • 0 • 0 0 0 0 0 0 •0 •0 0 eo.e • 0 0 0 • • • • •0 0 •0 0 e 0 0 0 e 0 0 •0 851014 5 -ENVIRONMENTAL CONSEQUENCES OF LICENSE DENIAL (***) 6 -REFERENCES 7 -GLOSSARY SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT E -CHAPTER 11 AGENCY CONSULTATION Title Page No. 1 -ACTIVITIES PRIOR TO FILING THE INITIAL APPLICATION (1980-February 1983)(***)• •e • • • • • • E-ll-1-1 2.1 -Technical Workshops (***)•••••••• 2.2 -Ongoing Consultation (***)•••••••••••• 2.3 -Further Comments and Consultation (***) II Ij u IJ IJ IJ i" 2 -ADDITIONAL FORMAL AGENCY AND PUBLIC CONSULTATION (***)• • • • •0 0 0 •• •••••..• • E-1l-2-1 E-1l-2-1 E-1l-2-1 E-1l-2-2 851014 xxix SUMMARY TABLE OF CONTENTS (cont'd) 3.1 -Governing Codes and Standards (0)·· · •F-3-1 3.2 -Design Loads (**).·.·F-3-1 3.3 -Stability (*). . .·•.· · .F-3-6 3.4 -Material Properties (0)·.•· · · · .F-3-9 5.1 -River Flows (**)• • • • • • • • • • •F-5-l 5.2 -Design Flows (**)• • • • • • • • • • • • •F-5-1 -5.3-Reservoir-Levels (**)• ••.••-..•".-.-.'...F-5-l -~----_5 •.4~_=Res.eI'..voir__OperatingRule(**)--0-0--0--00--0-..0 -.-F""'5.....2 .....-.----. 5.5 -Reservoir Data (**)• • • • • • •• • •F-5-2 5.6 -Wind Effect (**)0......0 • • • • •F-5-3 5.7 -Criteria (***)•0 • • • • • • •F-5-3 601 -Design Codes and Standards (*)..'....... 6.2 ....Ge1l.eral Criteria (*)..'.......... '1 J ,I ) ] ] ] ] 1 1 1 1 1 'j 1 J 'I } r F-5-1 F-3-1 F-4-1 F-2-1 F-1-1 F-4-1 F-4-10 F-6-1 F-6-1 F-6-2 F-2-1 F-2-1 F-2-1 F-2-1 F-2-1 F-2-2 Page No. o • ·.. • • • .00 ·.. • • ••• ID •e 9 ·. . ·... •• • 0 0 0 0 • •• ·.. • • • 0 • • • • •• •• • •• •• •0 0 0 0 0 0 • 0 •• •0 0 ··'xxx •• • • • • • • • • • • 0 • • • • ... •• ••• EXHIBIT F SUPPORTING DESIGN REPORT (PRELIMINARY) 2.1 -Topographical Data (0)••••• 2.2 -Hydrological Data (**)•••••••• 2.3 -Meteorological Data (*)•••••••• 2.4 -Reservoir Data (0)•••••••••••• 2.5 -Tailwater Elevations (0)•••••• 2.6 -Design Floods (**)•••• 4.1 -Watana (**)••••••••••• 4.2 -Devil Canyon (**)• • •••• 851014 Title 1 -PROJECT DATA (***). 5 -HYDRAULIC DESIGN DATA (**) 6 -EQUIPMENT DESIGN CODES AND STANDARDS (**) 2 -PRO.mCT DESIGN DATA (**) 3 -CIVIL DESIGN DATA (*) 4 -GEOTECHNICAL DESIGN DATA (**) SUMMARY TABLE OF CONTENTS (cont'd) EXHIBIT F SUPPORTING DESIGN REPORT (PRELIMINARY) Title Page No. F-7-1 F-6-4 F-6-6 F-6-6 F-6-8 F-6-9 F-6-12 ... • • • • • • ••• • •0 • 0 •GO.•.0. 6.3 -Diversion Structures and Emergency Release Facilities (*)•••••••• 6.4 -Spillway (**)• • • • • • • • • • 6.5 -Outlet Facilities (*)• 6.6 -Power Intake (*) 6.7 -Powerhouse (**).••••••••.••• 6.8 -Tailrace Tunnels (**)• ••• 7 -REFERENCES[I APPENDICES F1 THIS APPENDIX DELETED F2 WATANA AND DEVIL CANYON EMBANKMENT STABILITY ANALYSES [I F3 SUMMARY AND PMF AND SPILLWAY DESIGN FLOOD ANALYSES u II!J 851014 xxxi 1 -,I ] 01 ] j 'J 'J 1 I ] 'j --_.._._----_._~~-"-_.•.._--~.__.•._._--_.~-_._-_.__.--------------_._-_.__._-_.._~_._--------__._.__..-_._.•...._._-~-_._---_._.~--_._-----------_.._-....•....__.•....__._-___•.._--_._.•.•....__._----._---____--___.......•.•._-_..__._-_.-.._.____.__.•...._-_._--__.__ ___-_..__.--_...•._......•__._--_..__.._-____--_.._-_....•._----_.__..•_--_..__._._-_._------------ ] J } ] ] I ] TABLE OF CONTENTS SUSITNA HYDROELECTRIC PROJECT LICENSE APPLICATION EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS Title 1 -INTRODUCTION (**)• • • • •..•••••• •e •••• Page No. E-2·-1-1 2 -BASELINE DESCRIPnON (**)...••••••••• •••E-2-2-1 2.1 -Susitna River Morphology (**)•• ••.0 E-2-2-3 2.1.1 -Mainstem (**)•••••••••••• (a)Morphological Characteristics Upstream.of Devil Canyon (*)• ••• (b)Morphological Characteristics Downstream of Devil Canyon (*)• • • (i)RM 149 to RM 144 (*)••0 • (ii)RM 144 to RM 139 (0)• • (iii)RM 139 to RM 129.5 (*)•.• (iv)RM 129.5 to RM'119 (0)•0 • (v)RM 119 to RM 104 (0) (vi)RM 104 to RM 95 (0)• (vii)RM 95 to 61 (*)• • . • . (viii)RM 61 to RM 42 (0) (ix)RM 42 to RM 0 (0)• • • • 2.1.2 -Sloughs and Peripheral Habitat'(**)0 •• E-2-2-3 E-2-2-3 E-2-2-4 E-2-2-4 E-2-2-5 E-2-2-5 E-2-2-5 E-2-2-6 E-2-2-6 E-2-2-7 E-2-2-8 E-2-2-8 E-2-2-9 2.2 -Susitna River Water Quantity (**)••o 0 • •E-2-2-12 2.2.1 -Mean Monthly and Annual Flows (**) 2.2.2 -Floods (**)• • • •••••• 2.2.3 -Flow Variability (**)•••••••••• 2.2.4 -Water Levels (**)• • • • • • ••• (a)Mainstem (**)••••••• (b)Sloughs (**)• • • • • • • • • . E-2-2-12 E-2-2-15 E-2-2-16 E-2-2-18 E-2-2-18 E-2-2-18 2.3 -Susitna River Water Quality (**). ...E-2-2-19 . .. 851017 2.3.1 -Water Temperature (**)••••••• (a)Mainstem (**)• • • • (b)Sloughs and Peripheral Habitat Areas (**)• (c)Tributaries (**)• 2.3.2 -Ice (**)••••..•• i E-2-2-21 E-2-2-21 E-2-2-22 E-2-2-23 E-2-2-24 EXHIBITE -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) ! ] \ r l ,I E-2-2-38 E-2-2-39 E-2-2-40 E-2-2-40 Page No. E-2-2-36 E-2-2-37 E-2-2-38 E-2-2-38 E-2-2-24 E-2-2-26 E-2-2-27 E-2-2-29 E-2-2-29 E-2-2-33 E-2-2-35 E-2-2-35 • • 0 • • 0 Title (a)Freezeup (**)•••••• (b)Winter Ice Conditions (**) (c)Breakup (**)•••••••• 2.3.3 -Bedload and Suspended Sediments (**) (a)Bedload (**)• • • (b)Suspended Sediment (**)•••• 2.3.4 -Turbidity (**)•••••••••• (a)Mainstem (**)••••• (b)Sloughs and Peripheral Habitat Areas (**)• • • • • • • 2.3.5 -Vertical Illumination (**)••••••0 2.3.6 -Dissolved Gases (**)••0 • (a)Dissolved Oxygen (**)•0 0 • 0 • 0 -(b )Total Dissolved-Gas Concentration (**).• 0 • • • 2.3.7 -Nutrients (**)•••0 •• 203.8 -Other Parameters (*)• 0 • (a)Total Dissolved Solids (*) (b)Specific Conductance (Conductivity)(*)• • • • 0 • •E-2-2-40 -(c-)--Significantlons~(*)• • • • • • •.E-2-2-40 (d)Total Hardness (0)• •0 •E-2-2-41 (e)pH (*)• • • • • • 0 •E-2-2-41 (f)Total Alkalinity (*)•E-2-2-4l (g)Free Carbon Dioxide (0)E~2-2-42 (h)Total Organic Carbon (*)•E-2-2-42 (i)Chemical Oxygen Demand (0)E-2-2-43 (j)True Color (*)0 0 • • • • •E-2-2-43 -------------_-._.(k)_Metals-;(0).·0_0·00 •-.--..0 .--E~2-2~43 _(lL__Chl orophy_U -a (~~L_.•._.._"-_.•._._.•___E:-_2.::"'_2 -44._ (m)Bacteria (**)••••••0 • •E-2-2-44 (n)Miscellaneous (**)• 0 •E-2-2-45 2.3.9 -Water Quality Summary (**)E-2-2-45 2.4 -Baseline Ground Water Conditions (**)•E-2-2-46 20401 -Description of Water Table and Artesian Conditions(~*)D.•••E-2-2-46 2.402 -Hydraulic Connection of Ground Water and Surface Water (**)• 0 • 0 • • 0 • 0 E-2-2-47 2.4.3 -Locations of Springs,Wells,and Artesian Flows (*)•••0 • • 0 0 E-2-2-48 \- 1 . ..0. i I; Title EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) 2.4.4 -Hydraulic Connection of Mainstem and Sloughs C**)••••••• Page No. E-2-2-48 2.5 -Existing Lakes,Reservoirs,and Streams (**)E-2-2-49 • • 0 • 2.5.1 -Lakes and Reservoirs (**) 2.5.2 -Streams (**)••••• 2.6 -Existing Instream Flow Uses (0) .. .. . . . E-2-2-49 E-2-2-50 E-2-2-50 2.6.1 -Downstream Water Rights (~) 2.6.2 -Fishery Resources (*)• ••• 2.6.3 -Navigation and Transportation (**) (a)Boating Upstream of Devil Canyon (**) (b)Boating Downstream of Devil Canyon (**)••••••• .(i)River Use and Access (***) (ii)Navigability (***)••••• (c)Other Navigation and Transportation t,Tses (**)• • • • • • • 2.6.4 -Recreation (**)••••••••• 2.6.5 -Riparian Vegetation and Wildlife Habi tat (**)•••••••••• 2.6.6 -Waste Assimilative Capacity (**) 2.6.7 -Freshwater Recruitment to Cook Inlet Estuary (*)• • • • • • • • • • • 2.7 -Access Plan (**) E-2-2-50 E-2-2-52 E-2-2-52 E-2-2-52 E-2-2-53 E-2-2-53 E-2-2-55 E-2-2-60 E-2-2-61 E-2-2-61 E-2-2-61 E-2-2-62 E-2-2-63 2.7.1 -Flows (0)••• 2.7.2 -Water Quality (**) 2.8 -Transmission Corridor (**). • • • • 0 • • • .. . . . E-2-2-63· E-2-2-63 E-2-2-64 2.8.1 -Flows (*)•••••.•~• 2.8.2 -Water Quality (**)•••• 3 -OPERATIONAL FLOW REGIME SELECTION (***)• . . . •0 • • • • 0 E-2-2-64 E-2-2-65 E-2-3-1 3.1 -Project Reservoir Characteristics (***)E-2-3-1 851017 iii EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY \ .) :,! E-2-3-6 E-2-3-9 E-2-3-10 E-2-3-6 E-2-3-7 E-2-3-7 E-2-3-7 E-2-3-8 E-2-3-2 E-2-3-6 E-2-3-5 E-2-3-3 E-2-3-4 E-2-3-17 E-2-3-2 E-2-3-2 E-2-3-2 E-2-3-2 Page No. E-2-3-17 E-2-3-18 E-2-3-18 E-2-3-18 E-2-3-19 E-2-3-19 E-2-3-20 E-2-3-20 E-2-3-20 ... (***)• TABLE OF CONTENTS (cont'd) Reservoir Operation Models (***). -Basic Concept and Algorithm of Reservoir Operation (***)• • • • • • • • (a)Watana Stage 1.(***)•••• (b)Watana Stage I or Stage III with Devil Canyon Stage II (***). 3.4.1 -Environmental Flow Cases (***)••• (a)Case E-I (***)• • • • • • • • • (i)Management Objective (***) (ii)FlowCol1Sl:raints (***)•.. (iii)PrC)jectFlo~s(***}·..•.0" (iv)Impact Assessment (***)• (v)Mitigation (***) (b)Case E-II (***)••••••• (i)Management Objective (***)•• 3 .1.1 -Watana Stage I (***)..... 3.1.2 -Devil Canyon Stage II (***)• 3.1.3 -Watana Stage III (***)•• 3.2.1 3.2.2 3.4 -petailed Discussion of Flow Cases (***)• 3.2 -Reservoir Operation Modeling 3.3 -Development of Alternative Environmental Flow Cases (***)•••••••••• Title 3.3.1 -Background (***)••••• (a)Mainstem and Side Channel Rearing Habi tats (***)•• (b)Seasonal Flow Constraints (***) -------C-c}-Maximum -Flow~Gons,t-];!a-i.nts <-***)~..-. 3.3.2 -Selection Criteria (***)•••••• (a)Management Objectives (***)•••• (b).Critical Species and Habitat Combinations (***)• • • • (i)Habitat Sensitivity to Mainstem Conditions (***) (ii)Habitat Use by the Evaluation .Species_(~~~J_""L'.."--_'_,'."--...,E~2':""3':""11 _..__,.______________3.3 !1::...COII!2.a t i bi It~y_with Mitigation Po IicY_~~:"4:1~~2-1=11. EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) Title (ii)Flow Constraints (***) (iii)Project Flows (***)• • • (iv)Impact Assessment (***)• (v)Mitigation (***) (c)Case E-III (***)• • • • (i)Management Objectives (***)• (ii)Flow Constraints (***) (iii)Project Flows (***)• • • (iv)Impact Assessment (***)• (v)Mitigation (***)' (d)Case E-IV (***)•••• (i)Management Objectives (**~)• (ii)Flow Constraints (iii)Project Flows (***)• (iv)Impact Assessment (***). (v)Mitigation (***)'.• • • (e)Case E-IVa (***)• • . • • • • • (i)Management Objective (***)•• (ii)Flow Constraints (***) (iii)Project Flows (***)• • • (iv)Impact Assessment (***)• (v)Mitigation (***)•••• (f)Case E-IVb (***)• • . • (i)Management Objective (***)•• (ii)Flow Constraints (***)••• (iii)Project Flows (***)• • • (iv)Impact Assessment (***)• (v)Mitigation (***) (g)Case E-V (***)• • • • • • • • • (i)Management Objective (***)•• (ii)Flow Constraints (***) (iii)Project Flows (***)••• (iv)Impact Assessment (***)• (v)Mitigation (***)•••• (h)Case E-VI (***)•••• (i)Management Objective (***) (ii)Flow Constraints (***) (iii)Project Flows (***)• • (iv)Impact Assessment (***). (v)Mi ti ga tion (***)••• 3.5 -Comparison of Alternative Flow Regimes (***). Page No. E-2-3-20 E-2-3-21 E-2-3-21 E-2-3-22 E-2-3-23 E-2-3-23 E-2-3-23 E-2-3-23 E-2-3-23 E-2-3-24 E-2-3-24 E-2-3-24 E-2-3-24 E-2-3-25 E-2-3-25 E-2-3-26 E-2-3-26 E-2-3-26 E-2-3"';27 E-2-3-27 E-2-3-27 E-2-3-28 E-2-3-28 E-2-3-28 E-2-3-28 E-2-3-28 E-2-3-29 E-2-3-29 E-2-3-29 E-2-3"':29 E-2-3-29 E-2-3-30 E-2-3-30 E-2-3-30 E-2-3-30 E-2-3-31 E-2-3-32 E-2-3-32 E-2-3-33 E-2-3-36 E-2-3-37 851017 v EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) I I ) ] I >l ") l,/ E-2-3-43 E-2.-3-44 . E-2-3-42 E-2-3-46 E-2-3-47 E-2-3-47 E-2-3-43 E-2-3-41 E-2-3-42 E-2-3-42 E-2-3-53 E-2-3-54 E-2-3-53 E-2-3-54 E....2-3....53 E-2-3-40 E-2-3-40 E-2-3-40 E-2-3-41 E-2-3-38 E-2-3-39 E-2-3-39 Page No. .. . -Watana Stage I (***).........•• -Watana Stage I with Devil Canyon Sta.ge '.11,(***) -Watana Stage III with Devil Canyon Stage 11(***). -Base-Load and Load-Following Operation (***)• • • • • • • 3.7.1 3.7.2 3.6.2 -Dam (a) (b) 3.7.4 3.7.3 3.5.1 Economic Comparison (***)•••••••• 3.5.2 -Environmental Comparison (***) (a)Aquatic and Fisheries (***) (b)Other Instream Flow Considerations (**)••••• (i)Downstream Water Rights (*) (ii)Navigation and Transportation (**)• • (iii)Recreation (***)•••• (iv)Riparian Vegetation and Wildlife Habitat (*)••••• (v)Water Quality (*)••• (vi)Freshwater Recruitment to Cook Inlet(*)•••••••• 3.5.3 -Selection of Operational Instream Flow Requirements (***)• • • • • • 3.7 -Power and Energy Production (***) 3.6 -Other Constraints on Project Operation (***) Title 3.6.1 -Flow Stability Criteria (***)••• ~_(aJ Watana __Only_Opera Hon'(***). (b)Watana and Devil Canyon Operation (***)••••••• Safety Criteria (***)• • • • • Stage I -Watana Only Operation (***) S,tage II -Watana and Devil Canyon Operation (***)•••• •••E-2-3-49 (c)Stage III -Watana and Devil Canyon Operation (***)••••••••••E-2-3-50 -'--3.6.3 :-Emergency'SItuatfons'-(***r-• • • • •••E-2-3-52 .---'''-------------..-....-..-~--------3-;6-:-4~10w Requi rement Dur i ng FiTH ng -r***)-:--~-""'E'::-2 -3-5'2------·- EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) Title 4 -PROJECT IMPACT ON WATER QUALITY AND QUANTITY (**)• 4.1 -Watana Development (**)•••••• ••E-2-4-1 E-2-4-5 4.1.1 -Watana Stage I Construction (**)E-2-4-6 (a)Flows and Water Levels (**)· · · ·E-2-4-6 (b)River Morphology (**)· · · · ·E-2-4-7 (c)Water Quality (**)· · E-2-4-7 (i)Water Temperature (**)E-2-4-7 (ii)Ice (**).· · ·· · ·E-2-4-8 I (iii)Suspended Sediments/Turbidity/ I Vertical Illumination (**)E-2-4-8I.(iv)Nutrients and Organics (*)E-2-4-12 (v)Metals (0)· ·· · · · ···E-2-4-12 (vi)Contamination by Petroleum Products (**)· · ·· · · ··E-2-4-13 (vii)Concrete Contamination (**)·E-2-4-13 (viii)Other (0).· · · · ··E-2-4-15 (d)Groundwater Conditions (**)E-2-4-15 (e)Lakes and Streams (**)·· ···E-2-4-15 (f)Instream Flow Uses (**)E-2-4-16 (i)Fishery Resources (**)E-2-4-16 (ii)Navigation and Transportation (**)E-2-4-16 (iii)Riparian Vegetation (*)·E-2-4-17 (g)Support Facilities (**)E-2-4-17 (i)Water Supply (**)·E-2-4-17 (ii)Wastewater Treatment (**)E-2-4-18 (iii)Construction,Maintenance, and Operation (**)E-2-4-19 4.1.2 -Impoundment of Watana Reservoir (**)E-2-4-20 (a)Reservoir Filling Criteria (**)E-2-4-20 (i)Minimum Flows (**)E-2-4-20 (ii)Flood Storage Protection (*)E-2-4:-21 (b)Flows and Water Levels (**)E-2-4-21 (i)Simulation of Reservoir Filling (**)· · · · E-2-4-21 (ii)Floods (*)·· · · · ·E-2-4-22 (iii)Flow Variability (*)E-2-4-23 (c)Testing and Commissioning (**)·E-2-4-24 (d)River Morphology (**)· · · · · E-2-4-24 851017 vii EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY } ,I ,I J .\J ~\ 1 E-2-4-41 E-2-4-57 E-2-4-58 E-2-4-60 E-2-4-60 E-2-4-38 E-2-4-39 E-2-4-39 E-2-4-47 E-2-4-49 E-2-4-56 E-2-4-36 E-2-4-37 E-2-4-37 E-2-4-37 E-2-4-30 E-2-4-35 E-2-4-26 E-2-4-26 E-2-4-28 Page No. ... River Water (i) (iii) (iv) (v) Water (i) (ii) (iii) TABLE OF CONTENTS (cont'd) (b) (c) (e)Quality ••••••••• Water Temperature (**)••• Ice (**)•••• Suspended Sediments! Turbidity/Vertical Illumination (**)• • • (iv)Dissolved Oxygen (**)• (v)Total Dissolved Gas Concentration (**)•••••E-2-4-35 (vi)Nutrients (**)E-2-4-36 (vii)Total Dissolved Solids, Conductivity,Significant Ions,Alkalinity and Metals (**)•0 • • • • (viii)Other (0)0 0 ••••0 (f)Ground Water Conditions (**)• (i)Mainstem (0)•••• (ii)Sloughs and Peripheral Habitat Areas (**) (g).Lakes and Streams (*)••0 • (h)InstreamFlow Uses (~)0.0 0 •• (i)Fishery Resources,Riparian Vegetation,wildlife Habitat and Recreation (**)0 • • • •E-2-4-39 (ii)Navigation and Transportation (**)•0 • • •E-2-4-39 (iii)Was te Assimi lative Capacity (0)••• (iv)Freshwater Recruitment toCookInTet--E-sEuary-(**)..•-..-E=2"4-42 ··~--~-q::;1-:-3·-·--..W.-a-::-t-a-n-a-=S to-a-g-e---I'-"'O'-p-e-r-a~t i on c**r~-:~-~~~~·~~--E:-:;;2-q::;;';~2---·- (a)Flows and Water Levels (**)••o.E-2-4-43 (i)Project Operation (**)E-2-4-43 (ii)Mean Monthly Flows and Water Levels (**)• • • • • • Floods (**)• •:• • • • • • Flo~Varia.bility (**)•••• Operation of Watana Outlet Works and Fixed"Cone Valves (**)• • • Morphology (**)•0 0 • Quality (**)• • • Water Temperature (**) Title ._~_.._~..~_._-~...._-- 851017 viii '\ "I i I I i i I I EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) Title (ii)Ice (**)••••• (iii)Suspended Sediments (**) (iv)Turbidity (**)• • • • (v)Dissolved Oxygen (**)• (vi)Total Dissolved Gas Concentration (**) (vii)Trophic Status (Nutrients and Lower Trophic Level Biology)(**)• • • • • • (viii)Total Dissolved Solids, Conductivity,Significant Ions,Alkalinity,and Metals (**)• • • • • • • • • (d)Ground Water Conditions (**)• (i)Mainstem (*)•••••••• (ii)Sloughs and Peripheral Habitat (**).•••••• (e)Lakes and Streams (**)• • • • • (f)Instream Flow Uses (**)•••. (i)Fishery Resources,Riparian V~getation and Wildlife Habitat,and Recreation (**) (ii)Navigation and Transportation (**)• • • • • (iii)Waste Assimilative Capacity (*) (iv)Freshwater Recruitment to Cook Inlet Estuary (**)• 4.2 -Devil Canyon Development (**)• • • • • • • • Page No. E-2-4-79 E-2-4-84 E-2-4-92 E-2-4-98 E-2-4-99 E-2-4-101 E-2-4-103 E-2-4-105 E-2-4-105 E-2-4-105 E-2-4-106 E-2-4-107 E-2-4-107 E-2-4-107 E-2-4-109 E-2-4-110 E-2-4-110 4.2.1 -Watana Stage I Operation/Devil Canyon Construction (**)• • • • • • • • • • 851017 (a) (b) (c) Flows (i) (ii) River Water (i) (ii) (iii) (iv) and Water Levels (**) Watana Stage I Operation (**) Floods (**)• • • • • • Morphology (**) Qua li ty (**)• • • Water Temperature (0)• Ice (0)• • • • • • • Suspended Sediment/Turbidity/ Vertical Illumination (**) Nutrients (**)••••••• ix E-2-4-111 E-2-4-112 E-2-4-1l2 E-2-4-1l2 E-2-4-1l2 E-2-4-113 E-2-4-1l3 E-2-4-113 E-2-4-113 E-2-4-115 (e) (f) (g) (d) (e) (f) (g) EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) Title (v)Me ta1s (0 )••••••0 • • (vi)Contamination by Petroleum Products·(**)• • • • • • •0 (vii)Concrete Contamination (**)• (viii)Other Parameters (0)•••• Groundwater Condi tions (*)0 Lakes and Streams (**)•0 Instream Flow Uses (**)••• Support Facilities (**)••• (i)Water Supply and Wastewater Treatment (**)••••0 • 0 (ii)Construction,Operation,and Maintenance (*)• • 4.2!2 -Watal1a Operatiol1/Deyil Cal1yon Impoundment (**)••0 • • • 0 • • • (a)Reservoir Filling Criteria (**) (b)Flows and Water Levels (**) (c)River Morphology (**) (d)Water Quality (**)•0 • (i)Water Temperature (*) ~(ii)__~_I c_e_(Q)..L ..._..0 • (iii)Suspended Sediments/ Turbidity/Vertical Illumination (**)•0 (iv)Dissolved Oxygen (**)• (v)Total Dissolved Gas Concentration (**) (vi)Nutrients (**)0 0 (vii)Total Dissolved Solids, .......C-onductIviEy~SrgnifTcalit ..----..--.--...----..----.--.----..--------.-..-·---------Ions,A1:'Karini ty,ana------- Metals (**)• • •0 • 0 Ground Water Conditions (0) Lakes and Streams (*)•0 •. Instream Flow Uses (**) (i)Fishery Resources,Wildlife Habi-tat,Riparian Vegetation, and Recreation (**)• (Ii)Navigat:io-uaud Transportation (**)0 • (iii)Waste Assimilative Capacity (*)0 0 0 • 0 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) Title Page No. E-2-4-160 E-2-4-157 E-2-4-160 E-2-4-128 E-2-4-131 E-2-4-136· E-2-4-158· E-2-4-158 E-2-4-158 E-2-4-159 E-2-4-159 E-2-4-160 E-2-4-157 E-2-4-153 E-2-4-156 E-2-4-138 E-2-4-138 E-2-4-139 E-2-4-139 E-2-4-150 E-2-4-125 E-2-4-125 E-2-4-125 E-2-4-124 E-2-4-125 (iii) (iv) (v) Ground (i) (li) River Water (i) (li) (iii) Flows and Water Levels (**) (i)Project Operation (**) (ii)Mean Monthly Flows and Water Levels (**)• • Floods (**)• • • • • • Flow Variability (**)•• Operation of Watana and Devil Canyon Outlet Works and Fixed-Cone Valves (**) Morphology (**)••••• Quality (***)••.. Water Temperature (**) Ice (**)•.••••.. Suspended Sediments/Turbidity/ Vertical Illumination (**) (iv)Dissolved Oxygen (**)• (v)Total Dissolved Gas Concentration (**) (vi)Trophic Status (Nutrients)(**)•••• (vii)Total Dissolved Solids, Conductivity,Alkalinity, Significant Ions and Metals (**)• • • • • Water Conditions (**)• Mainstem (***) Sloughs and Peripheral Habitat Areas (***) Lakes and Streams (**)• Instream Flow Uses (**)•••. (i)Navigation and Transportation (**)• (ii)Freshwater Recruitment to Cook Inlet Estuary (**)• (d) (e) (f) (b) (c) (iv)Freshwater Recruitment to Cook Inlet Estuary (*)• • • • (h)Testing and Commissioning (***)• -Watana Stage I -Devil Canyon Operation (**)•••.••••••• (a) 4.2.3 4.3 -Watana Stage III Development (***)•.••••E-2-4-161 851017 xi E-2-4-163 E-2-4-163 ) j 1 .1 ,J E-2-4-163 E-2-4-165 E-2-4-166 E-2-4-166 E-2-4-167 E-2-4-167 E-2-4-167 E-2-4-168 E-2-4-161 E-2-4-162 E-2-4-162 E-2-4-162 E-2-4-162 E-2-4-1~2 E-2-4-163 E-2-4-163 E-2-4-163 E-2-4-163 . E-2-4-164 E-2-4-164 .E-2-4-164 E-2-4-164 E-2-4-165 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) Page No. 4.3.1 -Watana Stage III Construction/Stage II Operation (***)• • • • • • • • • • (a)Flows and Water Levels (***)• (b)River Morphology (***) (c)Water Quality (***)•••• (i)Water Temperature (***)• (ii)Ice (***)•••••••••• (iii)Suspended Sediments/Turbidity/ Vertical Illumination (***)E-2-4-162 (iv)Dissolved Oxygen (***)•••E-2-4-162 (v)Total Dissolved Gas Concentration (***)• (vi)Trophic Status (Nutrients)(***)• (vii)Total Dissolved Solids, Conductivity Alkalinity, Significant Ions and Metals (***)•••••• (viii)Contamination by Petroleum Products (***)••••••• (ix~~Concretecontamination~{***) (x)Other Parameters (***) (d)Groundwater Conditions (***)• • • • (e)Lakes and Streams (***)•••••• (f)Ins,t.ream Flow Uses (***)•••• (g)Su.Pport Faci tides (***)• (1)Water Supply (***) (ii)Wastewater Treatment (***) .(iiil~.consj:r:t1c~do_1J..,_MaJJ:)t~naJ:).ce., ._.._~~n.~and Operation (***L.!,~~_._.!....,......_.,..E-2-_4-16~~_._.,.. 4.3.2 -Watana Stage III Construction and Filling/Stage II Operation (***) (a)Reservoir Filling Criteria (***) (b)Flows and Water Levels (***)• • • • (c)River Morphology (***)• (d)Water Quality (***)•••••• ....'.,~..···TrrWaterTemperature (***)• • • (iil Ice~(***)•..•..• • • • (iii)Suspended Sediment/Turbidity/ Vertical Illumination (***).E-2-4-168 (iv)Dissolved Oxygen (***)E-2-4-170 Title Title 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) (v)Dissolved Gas (***)•.• (vi)Nutrients (***)••••• (vii)Total Dissolved Solids, Conductivity,Significant Ions,Alkalinity and Metals (***)••••.••• (viii)Other (***)•• •• (e)Groundwater Conditions (***) (f)Lakes and Streams (***)• • • • (g)Instream Flow Uses (***)• • • (i)Fishery Resources,Riparian vegetation,Wildlife and Recreation (***)•••• (ii)Navigation and Transportation (***) (iii)Waste Assimilative Capacity (***)•••. (iv)Freshwater Recruitment to Cook Inlet (***)•..• (h)Testing and Commissioning 4.3.3 -Watana Stage III Operation/Devil Canyon Stage II Operation (***)•••••• (a)Flows and Water Levels (***)• • (i)Project Operation (***)• (ii)Mean Monthly Flows and Water Levels (***) (iii)Floods (***)•••••• (iv)Flow Variability (***) (v)Operation of Outlet Works and Fixed-Cone Valves (***)• (b)River Morphology (***)• (c)Water Quality (***)•••• (i)Water Temperature (***). (ii)Ice (***)•••••••• (iii)Suspended Sediment (***) (iv)Turbidity/Vertical Illumination (***) (v)Dissolved Oxygen (***) (vi)Total Dissolved Gas Concentration (***) (vii)Trophic Status (Nutrients)(***)•• xiii Page No. E-2-4-170 E-2-4-171 E-2-4-171 E-2-4-171 E-2-4-171 E-2-4-173 E-2-4-173 E-2-4-173 E-2-4-174 E-2-4-174 E-2-4-174 'E-2-4-174 E-2-4-175 E-2-4-175 E-2-4-175 E-2-4-178 E-2-4-181 E-2-4-188 E-2-4-189 E-2-4-190 E-2-4-191 E-2-4-191 E-2-4-200 E-2-4-203 E-2-4-206 E-2-4-207 E-2-4-209 E-2-4-209 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) Title (viii)Total Dissolved Solids, Conductivity,Significant Ions,Alkalinity, and Metals (***) (d)Ground Water Conditions (***) (i)Mainstem (***)••••• (ii)Sloughs and Peripheral Habitat Areas (***)••• (e)Lakes and Streams (***) (f)Instream Flow Uses (***)• • • (i)Navigation and Transportation (***)•••• (ii)Freshwater Recruitment to Cook Inlet Estuary (***)• Page No. E-2-4-210 E-2-4-210 E-2-4-210 E-2-4-211 E-2-4-212 E-2-4-212 E-2-4-212 E-2-4-213 6 -MITIGATION,ENHANCEMENT,AND PROTECTIVE MEASURES (**)• 4.5 -Transmission Corridor (*)• • 5 -AGENCY CONCERNS AND RECOMMENDATIONS (**) .} ,I j } !j E-2-4-214 E-2-4-214 E-2-4-215 E-2-4-213 E-2-5-1 E-2-4-216 E-2-4-215 E-2-6-1 E-2-6-1 .~---_._-~_...__._~_._...•__.._~.- •• • • • •0 ... . . .. it 0 a 0 • • Sedimentation (**) by Protl"oleum -Flows (**) -Water Quallty (**) (a)Turbidity and (b)Gontamination Products (**) 4.4:.1 4.4.2 4.4 -Access Plan (**) 6.2 -Mitigation -Watana Stage I -Construction (**)•E-2-6-2 } I 6.2.1 -Borrow Areas (**)••••••••• 6.2.2 -Contamination by Petroleum Products (**) 6.2.3 -Concrete Contamination (*) 6.2.4 ..:.Support Fac11iHes (**)••••••••• (a)WateJ:"!3uP1>Jy -',**)• • • • (b)Wastewater Treatment (**) 6.2.5 -Others (0)••••••• E-2-6-2 E-2-6-3 E-2-6-4 £:"2-6-5 E-2-6-5 E-2-6-5 E-2-6-5 O} } 6.3 -Mitigation -Watana Stage I Impoundment (**)E-2-6-6 ;) \ 6.4 -Watana Stage I Operation (**)• • • • • 851017 xiv E-2-6-7 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) Title 6.4.1 -Flows (**)•••••••••••• 6.4.2 -River Morphology (**)••• 6.4.3 -Temperature (**)••• 6.4.4 -Total Dissolved Gas Concentration (**) 6.4.5 -Ice (**)•••••••••••• 6.4.6 -Groundwater Flow,Temperatures and Upwelling Rates (**)•••••••• 6.4.7 -Suspended Sediment and Turbidity (**) 6.4.8 -Eutrophication Processes (**)•••• Page No. E-2-6-7 E-2-6-8 E-2-6-9 E-2-6-10 E-2-6-12 E-2-6-12 E-2-6-13 E-2-6-13 6.5 -Mitigation -Devil Canyon Stage II - Construction (**)• • • • • • • 6.6 -Mitigation -Devil Canyon Stage II - Impoundment (**)•••. . . ... . • • 0 • • • E-2-6-13 E-2-6-14 6.7.1 6.7.2 6.7.3 6.7.4 6.7.5 6.7.6 6.7 -Mitigation -Devil Canyon/Watana Operation (**)• -Flows (**)•••••• • • • River Morphology (**)• • • • • • • -Temperature (**)•••••••••• -Total Dissolved Gas Concentration (**) Ice (**)•••••••••• -Groundwater Flow,Temperature and Upwelling Rates (***)• • • • • • • 6.7.7 -Suspended Sediment and Turbidity 6.7.8 -Eutrophication Processes •••• 6.8 -Mitigation -Watana Stage III - Construction (***)• • • • • • • . • • 6.9 -Mitigation -Watana Stage III Impoundment (***)• 6.10 -Mitigation -Stage III Operation (***) 6.10.1 -Flows (***)•••••••••• 6.10.2 -River Morphology (***) 6.10.3 -Temperatures (***)•••••• 6.10.4 -Total Dissolved Gas Concentration (***)••• 6.10.5 -Ice (***)••••• E-2-6-14 E-2-6-14 E-2-6-14 E-2-6-14 E-2-6-15 .E-2-6-15 E-2-6-16 E-2-6-16 E-2-6-16 E-2-6-16 E-2-6-16 E-2-6-17 E-2-6-17 E-2-6-17 E-2-6-17 E-2-6-18 E-2-6-18 851017 xv Title 6.11 -Mitigation -Access Road and Transmission Lines (***)• EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY TABLE OF CONTENTS (cont'd) .I ,1 1 'J 1 r 1 I I .I ! j .J E-2-7-1 E-2-8-1 E-2-6-19 E-2-6-18 E-2-6-19 E-2-6-19 Page No. • • • • • •.0.• • ••• ••• 0 • 0 • • 00.• • • ••0 • • • • ••• • 0 •0 •• • 6.10.6 -Groundwater Flow,Temperature and Upwelling Rates (***)••••••••• 6.10.7 -Suspended Sediment and Turbidity (***) 6.10.8 -Eutrophication (***)•••••••••. 8 -GLOSSARY 7 -REFERENCES \ J ( I j 851017 SUSITNA HYDROELECTRIC PROJECT LICENSE APPLICATION EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF TABLES Title SUSITNA RIVER REACH DEFINITIONS REPRESENTATIVE BED MATERIAL SIZE DISTRIBUTION FOR SELECTED SLOUGHS,SIDE CHANNEL AND MAINSTREAM SITES TRANSPORTABLE BED MATERIAL SIZES IN SELECTED SLOUGHS, SIDE CHANNEL AND MAINSTREAM SITES PERIODS OF RECORD FOR GAGING STATIONS USGS STREAMFLOW SUMMARY WATANA NATURAL MONTHLY FLOWS DEVIL CANYON NATURAL MONTHLY FLOWS COMPUTED WEEKLY FLOWS FOR SUSITNA RIVER AT WATANA DAMSITE COMPUTED WEEKLY FLOWS FOR SUSITNA RIVER AT DEVIL CANYON GOLD CREEK NATURAL MONTHLY FLOWS NATURAL WEEKLY FLOWS FOR SUSITNA RIVER AT GOLD CREEK FILLED WEEKLY FLOWS FOR SUSITNA RIVER AT SUNSHINE FILLED WEEKLY FLOWS FOR SUSITNA RIVER AT SUSITNA STATION FILLED STREAMFLOW SUMMARY CHULITNA NATURAL MONTHLY FLOWS SUSITNA STATION NATURAL MONTHLY FLOWS CHULITNA NATURAL MONTHLY FLOWS TALKEETNA NATURAL MONTHLY FLOWS xvii EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY Number E.2.2.19 E.2.2.20 E.2.2.21 E.2.2.22 E.2.2.23 E.2.2.24 E.2.2.25 E.2.2.26 E.2.2.27 E.2.2.28 E.2.2.29 E.2.2.30 LIST OF TABLES (cont'd) Title INSTANTANEOUS PEAK FLOWS OF RECORD FLOOD PEAKS FREQUENCY ATWATANA AND DEVIL CANYON FLOOD VOLUME FREQUENCY AT WATANA AND DEVIL CANYON COMPARISON OF SUSITNA REGIONAL FLOOD PEAK ESTIMATES WITH USGS FOR GOLD CREEK "HEC 2 WATER SURFACE ELEVATIONS WATER S.URFACE ELEVATIONS DETECTION LIMITS AND CRITERIA FOR WATER QUALITY PARAMETERS PARAMETERS EXCEEDING CRITERIA BY STATION AND SEASON SUSITNA RIVER BETWEEN THE CHULITNA CONFLUENCE AND GOLD CREEK WATER SURFACE ELEVATIONS MAJOR ANNUALLY RECURRING OPEN LEADS BETWEEN SUNSHINE AND DEVIL CANYON .'LOCATIONS AND DIMENSIONS ON MARCH 2,1983 N~ER OF BEPLOAD SAMPLE~COLLECTED UP TO FEBRUARY 1984 WATER DISCHARGE AND ESTIMATED .SEDIMENT TRANSPOR.T AT SELECTED SITES ON SUSITNA RIVER,MAY 1982 THROUGH ..SEPTEMBER_1 . I I BEDLOAD SIZE DISTRIBUTION .-------_._-._-~----.-_._--_._--_.--_._-_..~--_.._._------.._._---_.._-_._--_._._---~_._--.__.._-_._---_._._.__.•._-_..._---- Eo2.2.31 E.2.2.32 E.2.2.33 E.2.2.34 E.2.2.35 E.2.2.36 851017 BED MATERIAL SIZE DISTRIBUTION OF SUSITNA RIVER SUSPENDED SEDIMENT CONCENTRATION pART!CLE .....S!ZE .D!STRIBUTION OF.SUSPENDED SEDIMENT 1982 TURBIDITY AND SUSPENDED SEDIMENT ANALYSIS SUMMARY STATISTICS FOR HABITAT VARIABLES RECORDED ON THE xviii 'j j (1 i I Number E.2.2.37 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF TABLES (cont'd) Title BETWEEN THE CHULITNA RIVER CONFLUENCE AND DEVIL CANYON, MAY 18 TO SEPTEMBER 25,1983 SUMMARY STATISTICS FOR HABITAT VARIABLES RECORDED ON THE SUSITNA RIVER BETWEEN THE CHULITNA RIVER CONFLUENCE AND DEVIL CANYON,MAY 14 THROUGH OCTOBER 6,1984 SIGNIFICANT ION CONCENTRATIONS LAKES POTENTIALLY IMPACTED BY ACCESS ROADS AND/OR TRANSMISSION LINES STREAMS AND SLOUGHS TO BE PARTIALLY OR COMPLETELY INUNDATED BY WATANA RESERVOIR STREAMS AND SLOUGHS TO BE PARTIALLY OR COMPLETELY INUNDATED BY DEVIL CANYON RESERVOIR STREAMS AND SLOUGHS TO BE PARTIALLY OR COMPLETELY INUNDATED BY WATANA RESERVOIR DOWNSTREAM TRIBUTARIES POTENTIALLY IMPACTED BY PROJECT OPERATION SUMMARY OF SURFACE WATER AND GROUND WATER APPROPRIATIONS WATER RIGHT APPROPRIATIONS ADJACENT TO THE SUSITNA RIVER SUSITNA HYDROELECTRIC PROJECT PRIMARY ACTIVITIES FOR BOATS EXITING THE SUSITNA RIVER AT THREE LOCATIONS BOATS WITH NAVIGATIONAL PROBLEMS BY EXIT LOCATION,1984 TEMPORAL SALINITY ESTIMATES FOR SELECT COOK INLET LOCATIONS ESTIMATED LOW AND HIGH FLOWS AT ACCESS ROUTE STREAM CROSSINGS AVAILABLE STREAMFLOW RECORDS FOR MAJOR STREAMS CROSSED xix Number E.2.3.l E.2.3.2 E.2.3.3 E.2.3.4 E.2.3.5 E.2.3.6 E.2.3.7 E.2.3.8 E.2.3.9 E.2.3.l0 E.2.3.11 E.2.3.l2 E.2.3.13 E.2.3.l4 E.2.3.l5 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF TABLES (cont'd) Title RESERVOIR OPERATION LEVEL CONSTRAINTS INFLUENCE OF MAINSTEM FLOW AND WATER QUALITY ON CHARACTERISTICS OF AQUATIC HABITAT TYPES IMPORTANT qSES OF HABITAT TYPES BY EVALUATION SPECIES PRIMARY UTILIZATION OF SENSITIVE HABITAT TYPES BY EVALUATION SPECIES STANDARD WATER WEEKS FOR ANY WATER YEAR N FLOW CONSTRAINTS FOR ENVIRONMENTAL FLOW REQUIREMENT CASE E;;..I FLOW CONSTRAINTS FOR ENVIRONMENTAL FLOW REQUIREMENT CASE E-II FLOW CONSTRAINTS FOR ENVIRONMENTAL FLOW REQUIREMENT CASE E-III FLOW CONSTRAINTS FOR ENVIRONMENTAL FLOW REQUIREMENT CASE E-IV FLOW CONSTRAINTS FOR ENVIRONMENTAL FLOW REQUIREMENT CASE E-IVa FLOW CONSTRAINTS FOR ENVIRONMENTAL FLOW REQUIREMENT CASE E-IVb FLOW CONSTRAINTS FOR ENVIRONMENTAL FLOW REQUIREMENT CASE E-V FLOW CONSTRAINTS FOR ENVIRONMENTAL FLOW REQUIREMENT CASE E-VI ECONOMIC ANALYSIS OF ENVIRONMENTAL FLOW CASES,SHCA FORECAST SUSITNA DEPENDABLE CAPACITY AND USABLE ENERGY PRODUCTION,SHCA FORECAST xx 1 Number E.2.3.15 E.2.3.16 E.2.4.1 E.2.4.2 ! E.2.4.3 E.2.4.4 E.2.4.5 E.2.4.6 E.2.4.7 E.2.4.8 E.2.4.9 E.2.4.10 E.2.4.11 E.2.4.12 E.2.4.13 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF TABLES (cont'd) Title ECONOMIC ANALYSIS OF FLOW CASES DEPENDABLE CAPACITY AND ENERGY PRODUCTION LINKED SYSTEM FOR ESTIMATING IMPACTS OF SUSITNA HYDROELECTRIC PROJECT ON WATER USE AND QUALITY SUSITNA HYDROELECTRIC PROJECT CHARACTERISTICS .USED IN PROJECT FLOW AND TEMPERATURE SIMULATIONS SIMULATION OF WATANA STAGE I FILLING WATER LEVEL AND DISCHARGE VARIATIONS AT RIVER MILE 130 FOR VARIOUS DAILY AVERAGE DISCHARGES AND DISCHARGE FLUCTUATIONS AT WATANA POWERHOUSE FLUCTUATING WATER LEVEL -CASES ILLUSTRATED ON FIGURES E.2.4.19 THROUGH E.2.4.30 SURFACE AREA AT GIVEN DISCHARGE FOR VARIOUS SUSITNA RIVER DISCHARGES WITH-PROJECT WATANA MONTHLY FLOWS, STAGE I,WATANA (LOW)OPERATION,1996 LOAD CONDITIONS WITH PROJECT WATANA MONTHLY FLOWS (CFS),STAGE I WITH-PROJECT GOLD CREEK MONTHLY FLOWS,STAGE I WITH-PROJECT SUNSHINE MONTHLY FLOWS,STAGE I WITH-PROJECT SUSITNA STATION MONTHLY FLOWS,STAGE I MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT WATANA,STAGE I OPERATION MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT GOLD CREEK, STAGE I OPERATION MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT SUNSHINE, STAGE I OPERATION xxi EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY xxii SEDIMENT CONCENTRATION,STAGE I AVERAGE TOTAL SUSPENDED SOLIDS AND TURBIDITY VALUES SETTLING COLUMN TESTS LIST OF TABLES (cont'd) SETTLING COLUMN RUN #2,TOTAL SUSPENDED SOLIDS AND TURBIDITY STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1982, NATURAL CONDITIONS SETTLING COLUMN RUN #1,TOTAL SUSPENDED SOLIDS AND TURBIDITY SIMULATED STREAM TEMPERATURES WEATHER PERIOD:SUMMER 1982,CASE E-VI FLOW REQUIREMENTS,STAGE I SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1981,CASE E-VI FLOW REQUIREMENTS,STAGE I SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1981,CASE E-VI FLOW REQUIREMENTS,STAGE I WATANA OUTLET WORKS OPERATION,STAGE I MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT SUSITNA STATION,STAGE I OPERATION FLOOD PEAK FREQUENCY DATA FOR INTERVENING AREAS Title MAXIMUM SIMULATED RIVER STAGES,WINTER 1981-82,FLOW CASE E-VI,INFLOW-MATC~ING ..~:r:MlM~:r:r1T.1~'I':E:Q_JUYF,:g_.~1'Ag:E:~,WINTER ~9~J=~?_,FLOW CASE INFLOW-MATCHING E.2.4.28 E.2.4.27 E.2.4.26 851017 E.2.4.25 E.2.4.22 E.2.4.23 E.2.4.20 E.2.4.18 E.2.4.16 E.2.4.17 Number E.2.4.14 E.2.4.15 ...E.2.4.19 SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1982,CASE I-I FLOW REQUIREMENTS,STAGE I E.2.4.21 STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1981 NATURAL ---._~-..-..._~_·----CONDITIONS------------.-.---_.-_. Number E.2.4.23 E.2.4.24 E.2.4.25 E.2.4.26 E.2.4.27 E.2.4.28 E.2.4.29 E.2.4.30 E.2.4.31 E.3.5.32 E.2.4.33 E.2.4.34 E.2.4.35 E.2.4.36 E.2.4.37 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF TABLES (cont'd) Titie MAXIMUM SIMULATED RIVER STAGES,WINTER 1981-82,FLOW CASE E-VI,INFLOW-MATCHING MAXIMUM SIMULATED RIVER STAGES,WINTER 1981-82,FLOW CASE E-A,INFLOW-MATCHING SEDIMENT CONCENTRATION,STAGE I SETTLING COLUMN RUN #1,TOTAL SUSPENDED SOLIDS AND TURBIDITY SETTLING COLUMN RUN #2,TOTAL SUSPENDED SOLIDS AND TURBIDITY AVERAGE TOTAL SUSPENDED SOLIDS AND TURBIDITY VALUES SETTLING COLUMN TESTS TROPHIC STATUS AND RATES OF ANNUAL PRIMARY PRODUCTIVITY OBSERVED IN VARIOUS LAKES,LAKE-RESERVOIRS AND RESERVOIRS IN TEMPERATE,SUBARCTIC AND ARCTIC REGIONS OF THE NORTHERN HEMISPHERE PERCENT OF TIME NAVIGATION FLOWS EXCEEDED DURING STAGE I OPERATION WITH-PROJECT WATANA MONTHLY FLOWS,STAGE II, WITH-PROJECT DEVIL CANYON MONTHLY FLOWS,STAGE II, WITH-PROJECT GOLD CREEK MONTHLY FLOWS,STAGE II, WITH-PROJECT SUNSHINE MONTHLY FLOWS,STAGE II, WITH-PROJECT SUSITNA STATION MONTHLY FLOWS,STAGE II, MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT DEVIL CANYON, STAGE.II MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT GOLD CREEK, STAGE II xxiii Number E.2.4.38 E.2.4.36 E.2.4.37 E.2.4.38 E.2.4.39 E.2.4.40 E.2.4.41 E.2.4.42 E.2.4.43 E.2.4.44 E.2.4.45 851017 EXBIBITE -CHAPTER 2 WATER USE AND QUALITY LIST OF TABLES (cont'd) Title MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT SUNSHINE, STAGE II MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT DEVIL CANYON, STAGE II MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT GOLD CREEK, STAGE II MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT SUNSHINE, STAGE II MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT SUSITNA STATION,STAGE II DEVIL CANYON OUTLET WORKS OPERATION,STAGE II, SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1981,CASE E-VI FLOW REQUIREMENTS,STAGE II,50 FT. DRAW DOWN AT DEVIL CANYON,2 LEVEL INTAKE SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1982,CASE E-VI FLOW REQUIREMENTS,STAGE II,50 FT DRAWDOWN AT DEVIL CANYON.2 LEVEL INTAKE SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1981,CASE E-VI FLOW REQUIREMENTS,STAGE II,50 FT DRAWDOWN ATDE:IlIL CANYON,3 LEVEL INTAKE SIMULATED STREAM __TEMPERATURES,WEATH.ERP.E_RIQ,Q.;S_U_MME1L_____.. 1982,CASE E-VI FLOW REQUIREMENTS,STAGE II,50 FT DRAWDOWN,3 LEVEL INTAKE SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1981,CASE E-VI FLOW REQUIREMENTS,STAGE II,9 FT DRAWDOWN.AT DEVIL CANYON,2 LEVEL INTAKE xxiv J ! 1 I ! ,\ Number E.2.4.46 E.2.4.47 E.2.4.48 E.2.4.49 E.2.4.50 E.2.4.51 E.2.4.52 E.2.4.53 E.2.4.54 E.2.4.55 E.2.4.56 E.2.4.57 E.2.4.58 E.2.4.59 E.2.4.60 E.2.4.61 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF TABLES (cont'd) Title SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1982,CASE E-VI FLOW REQUIREMENTS,STAGE II,9 FT DRAWDOWN AT DEVIL CANYON,2 LEVEL INTAKE SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1981,CASE E-I FLOW REQUIREMENTS,STAGE II,50 FT DRAWDOWN AT DEVIL CANYON,2 LEVELS OF PORTS SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1982,CASE E-I FLOW REQUIREMENTS,STAGE II,50 FT DRAWDOWN AT DEVIL CANYON,2 LEVELS OF PORTS SEDIMENT CONCENTRATION STAGE II PERCENT OF TIME NAVIGATION FLOWS EXCEEDED DURING STAGE II OPERATION WITH-PROJECT WATANA MONTHLY FLOWS,EARLY STAGE III WITH-PROJECT DEVIL CANYON MONTHLY FLOWS,EARLY STAGE WITH-PROJECT GOLD CREEK MONTHLY FLOWS,EARLY STAGE III WITH-PROJECT SUNSHINE MONTHLY FLOWS,EARLY STAGE III WITH-PROJECT SUSITNA STATION MONTHLY FLOWS,EARLY STAGE III WITH-PROJECT WATANA MONTHLY FLOWS,LATE STAGE III WITH-PROJECT DEVIL CANYON MONTHLY FLOWS,LATE STAGE III WITH-PROJECT GOLD CREEK MONTHLY FLOWS,LATE STAGE III WITH-PROJECT SUNSHINE MONTHLY FLOWS,LATE STAGE III WITH-PROJECT SUSITNA STATION MONTHLY FLOWS,LATE STAGE III MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT DEVIL CANYON, STAGE III xxv EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF TABLES (cont'd) 1 '.1 Number Title E.2.4.62 MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT GOLD CREEK, STAGE III SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1982,CASE E-VI FLOW REQUIREMENTS,LATE STAGE III,50 FT DRAWDOWN AT DEVIL CANYON,2 LEVELS OF PORTS MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT SUSITNA STATION,STAGE III DEVIL CANYON OUTLET WORKS OPERATION,LATE STAGE II MONTHLY MAXIMUM,MINIMUM AND MEAN FLOWS AT SUNSHINE, STAGE III DEVIL CANYON OUTLET WORKS OPERATION,EARLY STAGE III .sIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1981,CASE E-VI FLOW REQUIREMENTS,LATE STAGE III,50 FT DRAWDOWN AT DEVIL CANYON,2 LEVELS OF PORTS E.2.4.71 E.2.4.70 E.2.4.69 E.2.4.68 E.2.4.67 E.2.4.66 E.2.4.65 E.2.4.64 E.2.4.63 STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1981,CASE E-VI FLOW REQUlREMENTNS,EARLY STAGE III STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1982,CASE E"'VI FLOW REQUIR:EMENTS;EARt.YSTAGE III SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1981,CASE E-I FLOW REQUIREMENTS,LATE STAGE III 50 FT DRAW:OOtmAf :OEVILCANYON~2LEVELS~···.......__..~_.~~_.._-----_.-or-PORTS--·--_..____~_._.___ _..- E.2.4.72 SIMULATED STREAM TEMPERATURES,WEATHER PERIOD:SUMMER 1982,CASE E-I FLOW REQUIREMENTS,LATE STAGE III,50 FT DRAWDOWN AT DEVIL CANYON,2 LEVELS OF PORTS E~2.4.73 SEDlMENTCONCENTRATION ..--STAGE·III E.2.4.74 851017 PER:CENT OF TIME NAVIGATION FLOWS EXCEEDED DURING STAGE III OPERATION xxvi J .J 1 1 u Number E.2.2.1 E.2.2.2 E.2.2.3 E.2.2.4 E.2.2.5 E.2.2.6 E.2.2.7 E.2.2.8 E.2.2.9 E.2.2.10 E.2.2.11 E.2.2.12 E.2.2.13 E.2.2.14 E.2.2.15 E.2.2.16 E.2.2.17 E.2.2.18 E.2.2.19 E.2.2.20 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES Title STREAMFLOW GAGING AND WATER QUALITY MONITORING STATION SINGLE-CHANNEL RIVER PATTERN SPLIT CHANNEL RIVER PATTERN BRAIDED-CHANNEL RIVER PATTERN MULTI CHANNEL RIVER PATTERN SUSITNA RIVER THALWEG DEADMAN CREEK TO DEVIL CREEK SUSITNA RIVER THALWEG AND WATER SURFACE PROFILES DEVIL CANYON TO RIVER MILE 126 'SUSITNA RIVER THALWEG AND WATER SUSITNA RIVER THALWEG PROFILE SUNSHINE TO COOK INLET CROSS SECTION NUMBER 32 NEAR SHERMAN CREEK (RIVER MILE 129.7) BED MATERIAL SAMPLE SITE LOCATIONS SUSITNA RIVER PLAN INDEX MAP SUSITNA RIVER PLAN RIVER MILE 152 TO RIVER MILE 145 SUSITNA RIVER PLAN RIVER MILE 145 TO RIVER MILE 139 SUSITNA RIVER PLAN RIVER MILE 138 TO RIVER MILE 132 SUSITNA RIVER PLAN RIVER MILE 131 TO RIVER MILE 125 SUSITNA RIVER PLAN RIVER MILE 124 TO RIVER MILE 118 SUSITNA RIVER PLAN RIVER MILE 117 TO RIVER MILE III SUSITNA RIVER PLAN RIVER MILE 110 TO RIVER MILE 104 SUSITNA RIVER PLAN RIVER MILE 103 TO RIVER MILE 101 xxvii SLOUGH 9 CROSS SECTION CuRVE SUSITNA RiVER NEAR CANTWELL EXHIBITE -CHAPTER 2 WATER USE AND QUALITY ANNUAL FLOOD FREQUENCY CURVE TALKEETNA RIVER-NEAR TALKEETNA ANNUAL FLOOD FREQUENCY CURVE SKWENTNA RIVER NEAR SKWENTNA ANNUAL FLOOD FREQUENCY CURVE CHULITNA RIVER NEAR TALKEETNA ANNUAL FLOOD FREQUENCY CURVE MACLAREN RIVER NEAR PAXSON LIST OF FIGURES (cont'd) ANNUAL FLOOD FREQUENCY CURVE SUSITNA RIVER NEAR DENALI ANNUAL FLOOD 1967 NATURAL FLOWS CANTWELL,WATANA AND GOLD CREEK 1970 NATURAL FLOWS CANTWELL,WATANA AND GOLD CREEK SLOUGH 9 THALWEG PROFILE 1964 NATURAL FLOWS CANTWELL,WATANA AND GOLD CREEK SUSITNA HYDROELECTRIC PROJECT MAIN CHANNEL BETWEEN RIVER CROSS SECTIONS 46 AND 48 SUSITNA HYDROELECTRIC PROJECT MAIN CHANNEL NEAR AND UPSTREAM FROM 4TH OF JULY CREEK SUSITNA HYDROELECTRIC PROJECT MAIN CHANNEL BETWEEN RIVER CROSS SECTIONS LRX 12 AND LRX 13 SUSITNA HYDROELECTRIC PROJECT MAIN RIVER CHANNEL NEAR RIVER CROSS SECTION LRX 4 SUSITNA RIVER PLAN RIVER MILE 100 TO RIVER MILE 97 SUSITNA HYDROELECTRIC PROJECT MAIN CHANNEL UPSTREAM FROM LANE CREEK Title E.2.2.37 E.2.2.35 E.2.2.34 E.2.2. E.2.2.31 E.2.2.29 E.2.2.30 E.2.2.32 E.2.2.28 E.2.2.27 E.2.2.26 E.2.2.25 E.2.2.24 E.2.2.23 E;2.2.36 E.2.2.22 E.2.2.2l Number 851017 xxviii Number E.2.2.38 E.2.2 •.J9 E.2.2.40 E.2.2.41 E.2.2.42 E.2.2.43 E.2.2.44 ill LJ E.2.2.45 E.2.2.46 E.2.2.47 E.2.2.48 E.2.2.49 E.2.2.50 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title SUSITNA HYDROELECTRIC PROJECT FLOOD FREQUENCY CURVE SUSITNA RIVER AT GOLD CREEK SUSITNA HYDROELECTRIC PROJEC~FLOOD FREQUENCY CURVES FOR INTERVENING AREA BETWEEN CANTWELL AND GOLD CREEK ANNUAL SERIES SUSITNA HYDROELECTRIC PROJECT FLOOD PEAK FREQUENCY CURVES FOR NATURAL AND WITH-PROJECT CONDITIONS AT SUNSHINE MAXIMUM OF ANNUAL AND JULY-SEPTEMBER SERIES SUSITNA HYDROELECTRIC PROJECT FLOOD FREQUENCY CURVES AT SUSITNA STATION MAXIMUM OF ANNUAL AND JULY- SEPTEMBER SERIES 50-YEAR ANNUAL MAXIMUM FLOOD HYDRO GRAPH AT WATANA 50-YEAR ANNUAL MAXIMUM FLOOD HYDROGRAPH AT DEVIL CANYON MONTHLY AND ANNUAL FLOW DURATION CURVES SUSITNA RIVER NEAR DENALI,SUSITNA RIVER NEAR CANTWELL,SUSITNA RIVER AT GOLD CREEK MONTHLY AND ANNUAL FLOW DURATION CURVES SUSITNA RIVER AT SUSITNA STATION MONTHLY AND ANNUAL FLOW DURATION CURVES MACLAREN RIVER AT PAXSON MONTHLY AND ANNUAL FLOW DURATION CURVES CHULITNA RIVER NEAR TALKEETNA,TALKEETNA RIVER NEAR TALKEETNA SUSITNA RIVER AT GOLD CREEK HIGH-FLOW FREQUENCY CURVES JANUARY SUSITNA RIVER AT GOLD CREEK HIGH-FLOW FREQUENCY CURVES FEBRUARY SUSITNA RIVER AT GOLD CREEK HIGH-FLOW FREQUENCY CURVES MARCH xxix ._-_._._._._--_.._._------._.....-- EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY ] ] \ '.\ 'J ] l .\ "1 1 \ t ) J } J } .1 1 xxx LIST OF FIGURES (cont'd) SUSITNA RIVER AT GOLD CREEK LOW...;FLOW FREQUENCY CURVES MAY SUSITNA RIVER AT GOLD CREEK LOW~FLOW FREQUENCY CURVES JUNE SUSITNA RIVER AT GOLD CREEK LOW-FLOW FREQUENCY CURVES JULY AND AUGUST SUSITNA RIVER AT GOLD CREEK LOW-FLOW FREQUENCY CURVES MARCH SUSITNA RIVER AT GOLD CREEK LOW-FLOW.FREQUENCY CURVES APRIL SUSITNA RIVER AT GOLD CREEK HIGH-FLOW FREQUENCY CURVES JULY AND AUGUST SUSITNA RIVER AT GOLD CREEK HIGH-FLOW FREQUENCY CURVES APRIL SUSITNA RIVER AT GOLD CREEK HIGH-FLOW FREQUENCY CURVES SEPTEMBER AND OCTOBER SUSITNA RIVER AT GOLD CREEK HIGH-FLOW FREQUENCY CURVES NOVEMBER SUSITNA RIVER AT GOLD CREEK LOW-FLOW FREQUENCY CURVES JANUARY SUSITNARIVER AT GOLD CREEK HIGH-FLOW FREQUENCY CURVES MAY SUSITNA RIVER AT GOLD CREEK LOW-FLOW FREQUENCY CURVES FEBRUARY SUSITNA RIVER AT GOLD CREEK HIGH-FLOW FREQUENCY CURVES DECEMBER SUSITNA RIVER AT GOLD CREEK HIGH-FLOW FREQUENCY CURVES JUNE Title E.2.2.62 E.2.2.63 E.2.2.60 E.2.2.61 E.2.2.55 E.2.2.56 E.2.2.54 E.2.2.59 E.2.2.53 E.2.2.57 851017 E.2.2.58 E.2.2.51 E.2.2.52 Number i I I Number E.2.2.65 E.2.2.66 E.2.2.67 E.2.2.68 E.2.2.69 E.2.2.70 E.2.2.71 E.2.2.72 E.2.2.73 E.2.2.74 E.2.2.75 E.2.2.76 E.2.2.77 E.2.2.78 E.2.2.79 E.2.2.80 E.2.2.81 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title SUSITNA RIVER AT GOLD CREEK LOW-FLOW FREQUENCY CURVES SEPTEMBER AND OCTOBER SUSITNA RIVER AT GOLD CREEK LOW-FLOW FREQUENCY CURVES NOVEMBER SUSITNA RIVER AT GOLD CREEK LOW-FLOW FREQUENCY CURVES DECEMBER BACKWATER PROFILES AT THE MOUTH OF SLOUGH 9 OBSERVED WATER SURFACE ELEVATIONS AT MOUTH OF SLOUGH 9 FOR ASSOCIATED MAINSTEM DISCHARGES AT GOLD CREEK SUSITNA RIVER WATER TEMPERATURES SUMMER 1980 SUSITNA RIVER WATER TEMPERATURES SUMMER 1981 SUSITNA RIVER AT WATANA WEEKLY AVERAGE WATER TEMPERATURE 1981 WATER YEAR SUSITNA RIVER -WATER TEMPERATURE GRADIENT DATA SUMMARY -TEMPERATURE LOCATION MAP FOR 1982 MID WINTER TEMPERATURE STUDY SITES WINTER INTERGRAVEL WATER TEMPERATURES SIDE SLOUGH HABITATS WINTER SURFACE WATER TEMPERATURES SIDE SLOUGH HABITATS SUMMER SURFACE AND INTERGRAVEL TEMPERATURES SLOUGH 84 SUMMER SURFACE AND INTERGRAVEL TEMPERATURES SLOUGH 9 SUMMER SURFACE AND INTERGRAVEL TEMPERATURES SLOUGH 11 COMPARISON OF WEEKLY DIEL SURFACE WATER TEMPERATURE VARIATIONS IN SLOUGH 21 AND THE MAINSTREAM SUSITNA RIVER AT PORTAGE CREEK 1981 xxxi EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY -.-.~-----.-~-.--~~-.--~.-E.2.-2 .•-9-4-----J1AINSTEM-D.lSCHARGE,-WATER--TE~RAT-URE_,~~ANlLTURBIDJ:TY~-----~-~-~­ RECORDED AT THE GOLD CREEK STATION,SUSITNA RIVER Number E.2.2.82 E.2.2.83 E.2.2.84 E.2.2.8S E.2.2.86 E.2.2.87 E.2.2.88 E.2.2.89 E.2.2.90 E.2.2.91 E.2.2.92 E.2.2.93 E.2.2.9S E.2.2.96 E.2.2.97 851017 LIST OF FIGURES (cont'd) Title SUSITNA RIVER,PORTAGE CREEK AND INDIAN RIVER WATER TEMPERATURES SUMMER 1982 DAILY WATER TEMPERATURES OF SUSITNA RIVER MAINSTEM AND INDIAN RIVER DAILY TEMPERATURES OF MAINSTEM SUSITNA RIVER AND PORTAGE CREEK COMPARISON OF 1982 TALKEETNA,CHULITNA,AND SUSITNA RIVER WATER TEMPERATURES DAILY TEMPERATURES OF MAINSTEM SUSITNA RIVER,CHULITNA RIVER AND TALKEETNA RIVER TEMPERATURE OF MA~NSTEM SUSITNA RIVER AND YENTNA RIVER WATER SURFACE PROFILES ON SUSITNA RIVER RELATIONSHIP BETWEEN ARMORING SIZE AND RIVER DISCHARGE SUSITNA RIVER SUSPENDED SEDIMENT CONCENTRATIONS SUSPENDED SEDIMENT SIZE DISTRIBUTION SUSITNA RIVER DATA SUMMARY -TURBIDITY TURBIDITY VS.SUSPENDED SEDIMENT CONCENTRATION TURBIDITY DATA SUMMARY SHOWING RANGE,25TH,50TH (MEDIAN),,AND 75TH PERCENTILE FOR MAINSTEM AND TRIBUTARY STUDY SITES TURBIDITY,WATER TEMPERATURE,AND SUSITNA RIVER DISCHARGE VS.TIME AT THE TALKEETNAFISHWHEEL CAMP MAINSTEM DISCHARGE,WATER TEMPERATURE,AND TURBIDITY IN THE MIDDLE REACH OF THE SUSITNA RIVER,1984 xxxii 1 1 J .\ } J ~1 \ c \ 1 J t I ( I J j 1 J r III Number E.2.2.98 E.2.2.99 E.2.2.100 E.2.2.101 E.2.2.102 E.2.2.103 E.2.2.104 E.2.2.105 E.2~2.106 E.2.2.107 E.2.2.108 E.2.2.109 E.2.2.110 E.2.2.111 E.2.2 .112 E.2.2.113 E.2.2.114 E.2.2.115 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title RANGE OF TURBIDITY DURINGUNBREACHED AND BREACHED CONDITIONS FOR SIDE SLOUGH HABITATS RANGE OF TURBIDITY DURING UNBREACHED AND BREACHED CONDITIONS FOR SIDE SLOUGH HABITATS AN EMPIRICALLY DERIVED,GENERALIZED RELATIONSHIP BETWEEN TURBIDITY AND THE MAXIMUM EUPHOTIC ZONE DEPTH DATA SUMMARY -DISSOLVED OXYGEN DATA SUMMARY -DISSOLVED OXYGEN %SATURATION DISSOLVED OXYGEN DATA SUMMARY DISSOLVED OXYGEN DATA SUMMARY TOTAL DISSOLVED GAS (PERCENT SATURATION)VS.DISCHARGE RELATIONSHIPS BETWEEN GAS CONCENTRATION AND DISTANCE DOWNSTREAM OF PROPOSED DEVIL CANYON DAM SITE DATA SUMMARY -TOTAL PHOSPHORUS DATA SUMMARY -ORTHOPHOSPHATE DATA SUMMARY -NITRATE NITROGEN DATA SUMMARY -NITRATE NITROGEN DATA SUMMARY -TOTAL DISSOLVED SOLIDS DATA SUMMARY -CONDUCTIVITY CONDUCTIVITY DATA SUMMARY SHOWING RANGE,25TH,50TH (MEDIAN),AND 75TH PERCENTILE FOR MAINSTEM AND TRIBUTARY STUDY SITES DATA SUMMARY -SULFATE DATA SUMMARY -CHLORIDE xxxiii ··E.2 .-2·ol-2·5~-·~·-DA~A--SUMMARY---T0TAh-·0RGAN-IC-CARB0Nc Number E.2.2.ll6 E.2.2.ll7 E.2.2 .118 E.2.2.ll9 E.2.2.l20 E.2.2.l2! E.2.2.l22 E.2.2.l23 E.2.2.l24 E.2.2.l26 E.2.2.l27 E.2.2.l28 ___E.2.2.!29 E.2.2.l30 E.2.2.l3l E.2.2.l32 E.2.2.l33 E.2.2.l34 E.2.2.l35 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title DATA SUMMARY -CALCIUM Cd) DATA SUMMARY -MAGNESIUM (d) DATA SUMMARY -SODIUM (d) DATA SUMMARY -POTASSIUM (d) DATA SUMMARY -HARDNESS DATA SUMMARY -pH pH DATA SUMMARY SHOWING RANGE,25TH,50TH (MEDIAN),AND 75TH PERCENTILE FORMAINSTEMAND·TRIBUTARY WATER QUALITY STUDY SITES DATA SUMMARY -ALKALINITY -DATA SUMMARY -FREE CARBON DIOXIDE DATA SUMMARY -CHEMICAL OXYGEN DEMAND DATA SUMMARY -TRUE COLOR DATA SUMMARY -ALUMINUM (d) .DATA SUMMARY ....ALUMINUM.(t) DATA SUMMARY ...BISMUTH (d DATA SUMMARY -CADMIUM (d) DATA SUMMARY -CADMIUM (t) DATA SUMMARY -COPPER (d) DATA SUMMARY -COPPER (t) DATA SUMMARY -IRON (t) xxxiv ] .J 1 J -] 1 \ I -,-J j l ] 1 ! ] 1 1 j .J 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title DATA SUMMARY -LEAD (t) DATA SUMMARY -MANGANESE (d) DATA SUMMARY -MANGANESE (t) DATA SUMMARY -MERCURY (d) DATA SUMMARY -MERCURY (t) DATA SUMMARY -NICKEL (t) DATA SUMMARY -ZINC (d) DATA SUMMARY -ZINC (t) WATER BODIES TO BE INUNDATED BY STAGE I WATANA RESERVOIR WATER BODIES TO BE INUNDATED BY STAGE II DEVIL CANYON RESERVOIR WATER BODIES TO BE INUNDATED BY STAGE III WATANA RESERVOIR TOWNSHIP GRIDS INVESTIGATED FOR WATER RIGHTS IN THE SUSITNA RIVER BASIN SUSITNA RIVER PROPOSED HYDROELECTRIC DAM SITES AND BOAT LANDING SITES SELECT LOCATIONS OF COOK INLET SALINITY ESTIMATES TEMPORAL SALINITY ESTIMATES FOR COOK INLET NEAR THE SUSITNA RIVER MOUTH AREA AND CAPACITY CURVES -DEVIL CANYON RESERVOIR AREA AND CAPACITY CURVES -DEVIL CANYON RESERVOIR ENVIRONMENTAL FLOW REQUIREMENTS -CASE E-I xxxv I,Y i -\ I"J Number E.2.3.4 E.2.3.5 E.2.3.6 E.2.3.7 E.2.3.8 E.2.3.9 E.2.3.10 E.2.4.1 E.2 ..4.2 ..__E.2.4.4 E.2.4.5 E.2.4.6 E.2.4.7 E.2.4.8 E.2.4.10 E.2.4.11 E~2.4~13 .... E.2.4.14 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title ENVIRONMENTAL FLOW REQUIREMENTS -CASE E-II ENVIRONMENTAL FLOW REQUIREMENTS -CASE E-III ENVIRONMENTAL FLOW REQUIREMENTS -CASE E-IV ENVIRONMENTAL FLOW REQUIREMENTS -CASE E-IVa ENVIRONMENTAL FLOW REQUIREMENTS -CASE E-IVb ENVIRONMENTAL FLOW REQUIREMENTS -CASE E-V ENVIRONMENTAL FLOW REQUIREMENTS -.CASE E-VI WATANA BORROW SITE MAP WATANA BORROW SITE D WATANA BORROW SITE E FLOW JlARIABILITY ATG9LD.GREEI(IUJ.RUl.G.WATAliA FILLING WATANA RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH WATANA RESERVOIR TEMPERATURE PROFILES WATANA RESERVOIR TEMPERATURE PROFILES WATANA RESERVOIR·TEMPERATURE PROFILES EKLUTNA LAKE LIGHT EXTINCTION IN SITU MEASUREMENTS WATANA WATER SURFACE ELEVATION,STAGE I WATANA-WATER-SURFACEEloEVATION-MONTHLY SUMMARY,STAGE I WATANA-RESERVOIR INFLOW ;STAGE _.r·-- WATANA RESERVOIR OUTFLOW,STAGE I xxxvi Number E.2.4.15 E.2.4.16 E.2.4.17 E.2.4.18 E.2.4.19 E.2.4.20 E.2.4.21 E.2.4.22 E.2.4.23 E.2.4.24 E.2.4.25 E.2.4.26 E.2.4.27 ,j E.2.4.28 E.2.4.29 ) 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title WATANA WATER SURFACE ELEVATION,E-l,STAGE I,LOAD YEAR 2001 WATANA WATER SURFACE ELEVATION,E-l,MONTHLY SUMMARY, STAGE I WATANA RESERVOIR INFLOW,E-l,STAGE I WATANA RESERVOIR OUTFLOW,E-l,STAGE I DISCHARGE HYDROGRAPH AT LRX-23,RM 120.26,OXBOW II SIDE CHANNEL,CASE ACB RIVER STAGE HYDROGRAPH AT LRX-23,RM 120.26,OXBOW II SIDE CHANNEL,CASE ACB DISCHARGE HYDRO GRAPH AT LRX-23,RM 120.26,OXBOW II SIDE CHANNEL,CASE ACC RIVER STAGE HYDROGRAPH AT LRX-23,RM 120.26,OXBOW II SIDE CHANNEL,CASE ACC DISCHARGE HYDROGRAPH AT LRX-23,RM 120.26,OXBOW II SIDE CHANNEL,CASE ACD RIVER STAGE HYDROGRAPH AT LRX-23,RM 120.26,OXBOW II SIDE CHANNEL,CASE ACD DISCHARGE HYDROGRAPH AT LRX-38,RM 132.90,4TH OF JULY CREEK SIDE CHANNEL,CASE CBA RIVER STAGE-HYDROGRAPH AT LRX-38,RM 132.90,4TH OF JULY CREEK SIDE CHANNEL,CASE CBA DISCHARGE HYDROGRAPH AT LRX-38 ,RM 132.90,4TH OF JULY CREEK SIDE CHANNEL,CASE CCB RIVER STAGE HYDROGRAPH AT LRX-38,RM 132.90,4TH OF JULY CREEK SIDE CHANNEL,CASE CCB DISCHARGE HYDROGRAPH AT LRX-38,RM 132.90,4TH OF JULY CREEK SIDE CHANNEL,CASE CCD xxxvii ) ) EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) J J Number Title :1 l 1 'j j \ 1 "1 1 1 )l 1/ )j WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 130.9,STAGE WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 142.3,STAGE I WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 124.4,STAGE I AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1964 HYDROLOGY,STAGE I,E-VI FLOW REQUIREMENTS MEAN WEEKLY WATER LEVEL DIFFERENCES AT SLOUGH 9 (RM 129.3)RESULTING FROM MEAN WEEKLY FLOW DIFFERENCES MEAN WEEKLY WATER LEVEL DIFFERENCES AT SLOUGH 11 (RM 136.7)RESULTING FROM MEAN WEEKLY FLOW DIFFERENCES MEAN WEEKLY WATER LEVEL DIFFERENCES AT SLOUGH 21 (RM 142.2}RESULTINGFROM MEAN WEEKLY FLOW DIFFERENCES AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1967 HYDROLOGY,STAGE I,E-VI FLOW REQUIREMENTS AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1970 HYDROLOGY,STAGE I,E-VI FLOW REQUIREMENTS SURFACE AREA VS.DISCHARGE,SUSITNA RIVER BETWEEN DEVIL CANYON AND CHULITNA RIVER RIVER STAGE HYDROGRAPH AT LRX-38,RM 132.90,4TH OF JULY CREEK SIDE CHANNEL,CASE CCD MEAN WEEKLY WATER LEVEL DIFFERENCES AT SLOUGH 8 (RM 127.1)RESULTING FROM MEAN WEEKLY FLOW DIFFERENCES E.2.4.41 E.2.4.43 E.2.4.39 E.2.4.42 E.2.4.37 AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR ....19~11lXPRQr.QGX ,ST4G~_:I:,~=Yl,fLQW'R.EQlJIR~M:E;In'S E.2.4.40 ,._-------AVERAGEWEEKLy'SUSITNA RIVER 'FLOWS 'AT GOLD CREEK FOR:-- 1982 HYDROLOGY,STAGE I,E-VI FLOW REQUIREMENTS E.2.4.36 E.2.4.38 E.2.4.35 E.2.4.31 E.2.4.34 E.2.4.33 E.2.4.30 E.2.4.32 ) I 851017 xxxviii 1 }' u I Number E.2.4.44 E.2.4.4,5 E.2.4.46 E.2.4.47 E.2.4.48 E.2.4.49 E.2.4.50 E.2.4.51 E.2.4.52 E.2.4.53 . E.2.4.54 E.2.4.55 E.2.4.56 E.2.4.57 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title AVERAGE WEEKLY SUSITNA RIVER STREAMFLOWS EXCEEDED 6%, 50%AND 97%OF THE TIME AT GOLD CREEK,STAGE I,E-VI FLOW REQUIREMENTS AVERAGE WEEKLY SUSITNA RIVER STREAMFLOWS EXCEEDED 6%OF THE TIME AT GOLD CREEK,STAGE I,E-VI FLOW REQUIREMENTS AVERAGE WEEKLY SUSITNA RIVER STREAMFLOWS EXCEEDED 50%OF THE TIME AT GOLD CREEK,STAGE I,E-VI FLOW REQUIREMENTS AVERAGE WEEKLY SUSITNA RIVER STREAMFLOWS EXCEEDED 97%OF THE TIME AT GOLD CREEK,STAGE I,E-VI FLOW REQUIREMENTS AVERAGE WEEKLY SUSITNA RIVER STREAMFLOWS EXCEEDED 6%, 50%AND 97%OF THE TIME AT GOLD CREEK,STAGE I,E-I FLOW REQUIREMENTS AVERAGE WEEKLY SUSITNA RIVER STREAMFLOWS EXCEEDED 6%OF THE TIME AT GOLD CREEK,STAGE I AVERAGE WEEKLY SUSITNA RIVER STREAMFLOWS EXCEEDED 50%OF THE TIME AT GOLD CREEK,STAGE I AVERAGE WEEKLY SUSITNA RIVER STREAMFLOWS EXCEEDED 97%OF THE TIME AT GOLD CREEK,STAGE I AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1964 HYDROLOGY,STAGE I AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1967 HYDROLOGY,STAGE I AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1970 HYDROLOGY,STAGE I AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1981 HYDROLOGY,STAGE I AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1982 HYDROLOGY,STAGE I FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT WATANA DAMSITE,STAGE I xxxix ....__.-E.204..65-._.-_··-lrAKE--WI·LI.I-STON-T·EMPERATURE -PROF-IL-ES-,APRIL-14-15,198-2 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY Number E.2.4.58 E.2.4.59 E.2.4.60 E.2.4.61 E.2.4.62 E.2.4.63 E.2.4.64 E.2.4.66 E.2.4.67 E.2.4.68 E.2.4.69 E.2.4.70 E.2.4.71 E.2.4.72 E.2.4.73 E.2.4.74 E.2.4.75 851017 LIST OF FIGURES (cont'd) Title FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT GOLD CREEK,STAGE I FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT SUNSHINE,STAGE I FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT SUSITNA STATION,STAGE I WATER TEMPERATURE PROFILES,BRADLEY LAKE,ALASKA EKLUTNA LAKE OBSERVED AND PREDICTED TEMPERATURE PROFILES,JUNE AND JULY,1982 EKLUTNA LAKE OBSERVED AND PREDICTED TEMPERATURE PROFILES,AUGUST AND SEPTEMBER,1982 EKLUTNA LAKE OBSERVED AND PREDICTED TEMPERATURE PROFILES,OCTOBER AND NOVEMBER,1982 WATANA MULTILEVEL INTAKE STAGE I AND II EKLUTNA LAKE MODEL CALIBRATION,JUNE THROUGH NOVEMBER, 1982 EKLUTNA LAKE MODEL CALIBRATION,DECEMBER THROUGH MAY, 1982 WATANA RESERVOIR TEMPERATURE PROFILES,STAGE I WATANA RESERVOIR TEMPERATURE PROFILES,STAGE I WATANA RESERVOIR TEMPERATURE PROFILES,STAGE I WATANA RESERVOIR TEMPERATURE PROFILES,STAGE I WATANA RESERVOIR TEMPERATURE PROFILES,STAGE I WATANA RESERVOIR TEMPERATURE PROFILES,STAGE I STAGE I WATANA RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH,E-VI xl ] I ,.1 :1 )'.I Number E.2.4.76 E.2.4.77 E.2.4.78 E.2.4.79 E.2.4.80 E.2.4.81 E.2.4.82 E.2.4.83 E.2.4.84 E.2.4.85 E.2.4.86 E.2.4.87 E.2.4.88 I I(J E.2.4.89 E.2.4.90 851017 EXHIBITE -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title STAGE I WATANA RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH,E-VI SIMULATED SUSITNA RIVER TEMPERATURES RIVER MILE 150, STAGE I SIMULATED SUSITNA RIVER TEMPERATURES RIVER MILE 130, STAGE I SIMULATED SUSITNA RIVER TEMPERATURES RIVER MILE 100, STAGE I SUSITNA RIVER TEMPERATURES AT RIVER MILE 130,NATURAL CONDITIONS SUSITNA RIVER TEMPERATURES AT RIVER MILE 130,WATANA OPERATING SUSITNA RIVER TEMPERATURES AT RIVER MILE 84,NATURAL CONDITIONS SUSITNA RIVER TEMPERATURES AT RIVER MILE 84,WATANA OPERATING SIMULATED TEMPERATURES AT RIVER MILE 130,VARIOUS INTAKE OPERATING POLICIES SIMULATED TEMPERATURES AT RIVER MILE 130,VARIOUS INTAKE OPERATING POLICIES . SIMULATED TEMPERATURES AT RIVER MILE 130,VARIOUS INTAKE OPERATING POLICIES SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 150, STAGE I SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 130, STAGE I SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 100, STAGE I SIMULATED RIVER ICE CONDITIONS,STAGE I VS.NATURAL 1981-82 WEATHER CONDITIONS,CASE E-VI FLOWS xli Number E.2.4.91 E.2.4.92 E.2.4.93 E.2.4.94 E.2.4.95 E.2.4.96 E.2.4.97 E..2 ..4.98 E.2.4.99 E.2.4.100 ..~...~~-E •.2.A.•.lOL E.2.4.102 E.2.4 103 E.2.4.104 E.2.4.105 851017 EXHIBITE -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title SIMULATED RIVER ICE CONDITIONS,STAGE I,1981-82 WEATHER CONDITIONS,CASE E-I VS.CASE E-VI EAST FORK EKLUTNA CREEK SUSPENDED SEDIMENT PARTICLE SIZE DISTRIBUTION GLACIER FORK EKLUTNA CREEK SUSPENDED SEDIMENT PARTICLE SIZE DISTRIBUTION STOKES LAW FOR FALL VELOCITIES,VARIATIONS WITH RESPECT TO TEMPERATURE AND PARTICLE DENSITY EKLUTNA LAKE OUTFLOW SUSPENDED SEDIMENT SUSPENDED SEDIMENT SIZE DISTRIBUTION,SUSITNA RIVER NEAR CANTWELL SUSPENDED SEDIMENT RATING CURVE AT USGS GAGING STATION, SUSITNA RIVER NEAR CANTWELL WATANA RESERVOIR OUTFLOW SUS'PENDE-D SOLI-DSc,HIGH INFLOW YEAR WATANA RESERVOIR OUTFLOW SUSPENDED SOLIDS,LOW INFLOW YEAR WAT~NA RESERVOIR OUTFLOW SUSPENDED SOLIDS,AVERAGE INFLOW YEAR ISO-TURBIDITY VS.TIME,EKLUTNA LAKE AT STATION 9,1983 ISO-TURBIDITY VS.TIME,EKLUTNA LAKE AT STATION 9,1984 TURBIDITY VS.SUSPENDED SEDIMENT CONCENTRATION,SUSITNA RIVER TURBIDITY VS.SUSPENDED SEDIMENT CONCENTRATION IN SEVERAL ALASKAN RIVERS xlii .J I] [, f 1 i i IJ Number E.2.4.106 E.2.4.107 E.2 .4.108 E.2 .4.109 E.2.4.110 E.2.4.111 E.2.4.112 E.2.4.113 E.2.4.114 E.2.4.115 E.2.4.116 E.2.4.117 E.2.4.118 E.2.4.119 E.2.4.120 E.2.4.121 E.2.4.122 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title TURBIDITY VS.SUSPENDED SEDIMENT CONCENTRATION,EAST FORK TRIBUTARY TO EKLUTNA LAKE,1984 TURBIDITY VS.SUSPENDED SEDIMENT CONCENTRATION,GLACIER FORK TRIBUTARY TO EKLUTNA LAKE,1984 TURBIDITY VS.SUSPENDED SEDIMENT CONCENTRATION,EKLUTNA LAKE TURBIDITY VS.SUSPENDED SEDIMENT CONCENTRATION,EKLUTNA LAKE POWERHOUSE TAILRACE,1984 EMPIRICAL RELATIONSHIP OF NATURALLY OCCURRING TURBIDITY VERSUS SUSPENDED SEDIMENT CONCENTRATION FOR RIVERS AND LAKES IN ALASKA DEVIL CANYON BORROW SITE G DEVIL CANYON BORROW SITE MAP DEVIL CANYON QUARRY SITE K WATANA WATER SURFACE ELEVATION,STAGE II WATANA WATER SURFACE ELEVATION,MONTHLY'SUMMARY, STAGE II WATANA RESERVOIR INFLOW,STAGE II WATANA RESERVOIR OUTFLOW,STAGE II DEVIL CANYON WATER SURFACE ELEVATION,STAGE II DEVIL CANYON WATER SURFACE ELEVATION,MONTHLY SUMMARY, STAGE II DEVIL CANYON RESERVOIR INFLOW,STAGE II DEVIL CANYON RESERVOIR OUTFLOW,STAGE II WATANA WATER SURFACE ELEVATION,E-1,STAGE II xliii Number Eo204.123 E.2.4.124 E.2.4.125 E.2.4.126 E.2.4.127 E.2.4.128 E.2.4.129 E.2.4.130 E.2.4.131 E.2.4.132 Eo2.4.133 E.2.4.134 E.2.4.135 E.2 .4.136 E.2.4.137 E.2.4.138 851017 EXHIBIT E -CHAPTER 2 WATER'USE AND QUALITY LIST OF FIGURES (cont'd) Title WATANA WATEP SURFACE ELEVATION,MONTHLY SUMMARY,E-1, STAGE II WATANA RESERVOIR INFLOW,E-1,STAGE II WATANA RESERVOIR OUTFLOW,E-1,STAGE II DEVIL cANYON WATER SURFACE ELEVATION,E-1,STAGE II DEVIL CANYON WATER SURFACE ELEVATION,MONTHLY SUMMARY, E-1,STAGE II DEVIL CANYON RESERVOIR INFLOW,E-1,STAGE II DEVIL CANYON RESERVOIR OUTFLOW,E-1,STAGE II AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1964 HYDROLOGY,STAGE II,E-VI FLOW REQUIREMENTS AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 196'7-'HYDROI;OGY ,--STAGE-I-I,-E-VI--FI;OW-REQUIREMENTS- AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1970 HYDROLOGY,STAGE II,E-VI FLOW REQUIREMENTS AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1981 HYDROLOGY,STAGE II,E-VI FLOW REQUIREMENTS AVERAGE-WEEKLY SUSITNARIVERFLOWS AT-GOLD-CREEK F.OR .. .....__19.82 __HYDROLOGY_,STAGE-.IL;_E~V.L_FLORREQUIREMENTS_...._ WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 124.4,STAGE II WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 130.9,STAGE II WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 142.3,STAGE II SUSITNA RIVER STREAMFLOWS EXCEEDED 6%,50%AND 97%OF THE TIME AT GOLD CREEK,STAGE II,E-VI FLOW REQUIREMENTS xliv 'J ] \ j j .] ,1 ;,1~. 1 ] 1 1 , 1 1 ] I j I ] j I j U 1.1 Number E.2.4.139 E.2.4.140 E.2.4.141 E.2.,4.142 E.2.4.143 E.2.4.144 E.2.4.145 E.2.4.146 E.2.4.147 E.2.4.148 E.2.4.149 E.2.4.150 E.2.4.151 E.2.4.152 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title SUSITNA RIVER STREAMFLOWS EXCEEDED 6%OF THE TIME AT GOLD CREEK,STAGE II,E-VI FLOW REQUIREMENTS SUSITNA RIVER STREAMFLOWS EXCEEDED 50%OF THE TIME AT GOLD CREEK,STAGE II,E-VI FLOW REQUIREMENTS SUSITNA RIVER STREAMFLOWS EXCEEDED 97%OF THE TIME AT GOLD CREEK,STAGE II,E-VI FLOW REQUIREMENTS SUSITNA RIVER STREAMFLOWS EXCEEDED 6%,50%AND 97%OF THE TIME AT GOLD CREEK,STAGE II,E-I FLOW REQUIREMENTS SUSITNA RIVER STREAMFLOWS EXCEEDED 6%OF THE TIME AT GOLD CREEK,STAGE II SUSITNA RIVER STR~AMFLOWS EXCEEDED 50%OF THE TIME AT GOLD CREEK,STAGE II SUSITNA RIVER STREAMFLOWS EXCEEDED 97%OF THE TIME AT GOLD CREEK,STAGE II AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1964 HYDROLOGY,STAGE II AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1967 HYDROLOGY,STAGE II AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1970 HYDROLOGY,STAGE II AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1981 HYDROLOGY,STAGE II AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1982 HYDROLOGY,STAGE II FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT WATANA DAMSITE,STAGE II FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT DEVIL CANYON DAMSITE,STAGE II xlv Number E.2.4.153 E.2.4.154 E.2.4.155 E.2.4.156 E.2.4.157 E.2.4.158 E.2.4.159 E.2.4.160 E.2.4.161 E.2.4.162 E.2.4.164 E.2.4.165 E.2.4.166 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT GOLD CREEK,STAGE II FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT SUNSHINE,STAGE II FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT SUSITNA STATION,STAGE II DEVIL CANYON POWER INTAKE STAGE II DEVIL CANYON RESERVOIR OUTFLOW TEMPERATURE AND :rClt GROWTFl,Ce:-VI),WO I..~VJ!:L:rNTM<E,PROi'OSEDPROJECT STAGE.II DEVIL CANYON RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH,(E-VI),TWO LEVEL INTAKE,PROPOSED PROJECT STAGE II DEVIL CANYON RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH,(E-VI),THREE LEVEL INTAKE STAG~II DEVIL CANYON RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH,(E-VI),THREE LEVEL INTAKE STAGE II DEVIL CANYON RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH,(E-VI),9 FOOT DRAWDOWN STAGE II DEVIL CANYON RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH,(E-VI),9 FOOT DRAWDOWN "STA:GE"Ir"DEVIL"··CANYON-RESERVOIKOUTFI.;OVr"TEMPERATURE·"A:ND ICE GROWTH,(E-1) STAGE II DEVIL CANYON RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH (E-I) DEVIL CANYON RESERVOIR TEMPERATURE PROFILES,CASE E-VI STAGE II DEVIL CANYON RESERVOIR TEMPERATURE PROFILES,CASE E-VI STAGE II xlvi '1 ! " .~J 1 .j J I ] ] 1 J ] .\ .1 1 ] II u (J Number E.2.4.167 E.2.4.168 E.2.4.169 E.2.4.170 E.2.4.171 E.2.4.172 E.2.4.173 E.2.4.174 E.2.4.175 E.2.4.176 E.2.4.177 E.2.4.178 E.2.4.179 E.2.4.180 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title DEVIL CANYON RESERVOIR TEMPERATURE PROFILES,CASE E-VI STAGE II DEVIL CANYON RESERVOIR TEMPERATURE PROFILES,CASE E-VI STAGE II DEVIL CANYON RESERVOIR TEMPERATURE PROFILES,CASE E-VI, STAGE II DEVIL CANYON RESERVOIR TEMPERATURE PROFILES,CASE E-VI, STAGE II SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 150, STAGE II SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 13O, STAGE II SIMULATED SUSITNA·RIVER TEMPERATURES,RIVER MILE 100, ·STAGE II SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 150, STAGE II SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 130, STAGE II SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 100, STAGE II SUSITNA RIVER TEMPERATURES AT RIVER MILE 130,WATANA AND DEVIL CANYON OPERATING SUSIT~A RIVER TEMPERATURES AT RIVER MILE 84,WATANA AND DEVIL CANYON OPERATING SIMULATED TEMPERATURES AT RIVER MILE 130,VARIOUS INTAKE OPERATING POLICIES SIMULATED TEMPERATURES AT RIVER MILE 130,VARIOUS INTAKE OPERATING POLICIES xlvii Number E.2.4.181 E.2.4.182 E.2 .4.183 E.2.4.184 E.2.4.185 E.2.4.186 E.2.4.187 E.2.4.188 E.2.4.189 E.2.4.190 E.2.4.191 E.2.4.192 E.2.4.193 E.2.4.194 E.2.4.195 E.2.4.196 E.2.4.197 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 150, STAGE II SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 130, STAGE II SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 100, STAGE II SIMULATED RIVER ICE CONDITIONS,STAGE II VS.NATURAL 1981-82 WEATHER CONDITIONS,CASE E-VI FLOWS SIMULATED RIVER ICE CONDITIONS,STAGE II,1981-82 WEATHER CONDITIONS,CASE E-I VS.CASE E-VI WATANA RESERVOIR OUTFLOW SUSPENDED SOLIDS,STAGE II, AVERAGE YEAR DEVIL CANYON OUTFLOW SUSPENDED SOLIDS,STAGE II,AVERAGE YEAR WATANA QUARRY SITE A PLAN AND SECTIONS WATANA WATER SURFACE ELEVATION,EARLY STAGE III WATANA WATER SURFACE ELEVATION,MONTHLY SUMMARY,EARLY STAGE III .WATANA RESERVOIR INFLOW,EARLY_STAGE.II L WATANA RESERVOIR OUTFLOW,EARLY STAGE III DEVIL CANYON WATER SURFACE ELEVATION,EARLY STAGE III DEVIL CANYON WATER SURFACE ELEVATION,MONTHLY SUMMARY, EARLY STAGE II I DEVIL CANYON RESERvQ;I::a INJrLOW,EARLX STA.GE III DEVIL CANYON RESERVOIR OUTFLOW,EARLY STAGE III WATANA WATER SURFACE ELEVATION,LATE STAGE III xlviii \ II [ 1 1 1 'I 1 -1 .1 1 ) ,1 \) ) i j ] 1 Number E.2.4.198 ;. E.2.4.199 E.2.4.200 E.2.4.201 E.2.4.202 E.2.4.203 E.2.4.204 E.2.4.205 E.2.4.206 E.2.4.207 E.2.4.208 E.2.4.209 E.2.4.210 E.2 .4.211 E.2.4.212 E.2 .4.213 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title WATANA WATER SURFACE ELEVATION,MONTHLY SUMMARY,LATE STAGE III WATANA RESERVOIR INFLOW,LATE STAGE III WATANA RESERVOIR OUTFLOW,LATE STAGE III DEVIL CANYON WATER SURFACE ELEVATION,LATE STAGE III DEVIL CANYON WATER SURFACE ELEVATION,MONTHLY SUMMARY, LATE STAGE III DEVIL CANYON RESERVOIR INFLOW,LATE STAGE III DEVIL CANYON RESERVOIR OUTFLOW,LATE STAGE.III WATANA WATER SURFACE ELEVATION,.E-I FLOW REQUIREMENTS, LATE STAGE III .. DEVIL CANYON WATER SURFACE ELEVATION,E-1 FLOW REQUIREMENTS,LATE STAGE II I WATANA WATER SURFACE ELEVATION,MONTHLY SUMMARY,E-l FLOW REQUIREMENTS,LATE STAGE III DEVIL CANYON WATER SURFACE ELEVATION,MONTHLY SUMMARY, .E-l FLOW REQUIREMENTS,LATE STAGE III WATANA RESERVOIR INFLOW,E~1 FLOW REQUIREMENTS,LATE STAGE III WATANA RESERVOIR OUTFLOW,E-1 FLOW REQUIREMENTS,LATE STAGE III DEVIL CANYON RESERVOIR INFLOW,E-l FLOW REQUIREMENTS, LATE STAGE III DEVIL CANYON RESERVOIR OUTFLOW,E-l FLOW REQUIREMENTS, LATE STAGE II I AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1964 HYDROLOGY,LATE STAGE I II xlix EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY -_.__.._._._.....•_._----_....._----.~~._---_.__... E02.4.224 WEEKLY AVERAGE WATER SURFACE ELEVATIONSATRIVEICMrCE;-------- 130.9,EARLY STAGE III Number E.2.4.214 E.2.4.215 E0204.216 E0204.217 Eo 204.218 E.2.4.219 E02.4.220 E.2040221 E.2.4.222 E0204.223 E02.4.225 E.2.40226 851017 LIST OF FIGURES (cont'd) Title AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1967 HYDROLOGY,LATE STAGE III,E-VI FLOW REQUIREMENTS AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1970 HYDROLOGY,LATE STAGE III,E-VI FLOW REQUIREMENTS AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1981 HYDROLOGY,LATE STAGE III,E-VI FLOW REQUIREMENTS AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1982 HYDROLOGY,LATE STAGE III,E-VI FLOW REQUIREMENTS AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1964 HYDROLOGY ,LATE STAGE III, AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1967 HYDROLOGY,LATE STAGE III AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1970 HYDROLOGY;LATE STAGE III, AVERAGE WEEKLY SUSITNA RIVER.FLOWS AT GOLD CREEK FOR 1981 HYDROLOGY,LATE STAGE III AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1982 HYDROLOGY,LATE STAGE III WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 1~4!4 ,MJM..X .....----- WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 142.3 EARLY STAGE III WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 124.4,LATE STAGE III 1 I \ 'I 1 1 I 1 I .l .1 1., '{ 1 Number E.2.4.227 E.2.4.228 E.2.4.229 E.2.4.230 E.2.4.231 E.2.4.232 E.2.4.233 E.2.4.234 E.2.4.235 E.2.4.236 E.2.4.237 E.2.4.238 [J E.2.4.239 II E.2.4.240:....1 ) 1 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 130.9,LATE STAGE III WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 142.3,LATE STAGE III SUSITNA RIVER STREAMFLOWS EXCEEDED 6%,50%AND 97%OF THE TIME AT GOLD CREEK,EARLY STAGE III SUSITNA RIVER STREAMFLOWS EXCEEDED 97%OF THE TIME AT GOLD CREEK,EARLY STAGE III SUSITNA RIVER STREAMFLOWS EXCEEDED 50%OF THE TIME AT GOLD CREEK,EARLY STAGE III SUSITNA RIVER STREAMFLOWS EXCEEDED 6%OF THE TIME AT GOLD CREEK,EARLY STAGE III SUSITNA RIVER STREAMFLOWS EXCEEDED 6%,50%AND 97%OF THE TIME AT GOLD CREEK,LATE STAGE III SUSITNA RIVER STREAMFLOWS EXCEEDED 97%OF THE TIME AT GOLD CREEK,LATE STAGE III SUSITNA RIVER STREAMFLOWS EXCEEDED 50%OF THE TIME AT GOLD CREEK,LATE STAGE III SUSITNA RIVER STREAMFLOWS EXCEEDED 6%OF THE TIME AT GOLD CREEK,LATE STAGE III SUSITNA RIVER STREAMFLOWS EXCEEDED 6%,50%AND 97%OF THE TIME AT GOLD CREEK,LATE STAGE III SUSITNA RIVER STREAMFLOWS EXCEEDED 6%OF THE TIME AT GOLD CREEK,LATE STAGE III SUSITNA RIVER STREAMFLOWS EXCEEDED 50%OF THE TIME AT GOLD CREEK,LATE STAGE III SUSITNA RIVER STREAMFLOWS EXCEEDED 97%OF THE TIME AT GOLD CREEK,LATE STAGE III li EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY ] l .) 1 "J \ 'I ,,l , j ~ '} } 1 I ) I ) ] '1 LIST OF FIGURES (cont'd) EARLY STAGE III DEVIL CANYON RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH,.E-VI WATANA MULTILEVEL INTAKE,STAGE III LATE STAGE III DEVIL CANYON RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH,E-VI tATESTAG£tn ·.DEVIl.·CANYONRlrSERVOIR OUTFLOW TEMPERATUREANDICEGROWTIi,E ....VI FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT WATANA DAMSITE,LATE STAGE III FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT SUNSHINE,LATE STAGE III FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT SUNSHINE,EARLY STAGE III FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RI~VER AT·DEVILCANYON-DAMSITE,LATE STAGEr II FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT GOLD CREEK,LATE STAGE III FLOW DURATION CURVES ,BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT SUSITNA STATION,EARLY STAGE III Title FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT WATANA DAMSITE,EARLY STAGE III FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT DEVIL CANYON DAMSITE,EARLY STAGE III FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE,SUSITNA RIVER AT GOLD CREEK,EARLY STAGE III E.2.4.251 E.2.4.254 E.2.4.253 E.2.4.252 Eo2.4.249 E.2.4.247 Number E.2.4.246 E.2.4.241 E.2.4.248 E.2.4.242 E.2.4.243 E.2.4.245 E.2.4.244 FLOW DUM'l.'I.Q1L~CURVES BA~J~.J:)~ON.MQ!ITJ:!I..XJ:)I~C:.~~Q:E:,SUSITNA ......._..~__..~_.._...____~_~.__._.._..__._:_RI==.cV:..::E=R::...=AT=-~-'S=..:U:..:S:..::I~T==NA=.=STATION LATE STAGE II I 851017 lii 1 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) '.,Number Title i I'E.2.4.255 EARLY STAGE III DEVIL CANYON RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH,E-VI E.2.4.256 LATE STAGE III DEVIL CANYON ~ESERVOIR OUTFLOW· TEMPERATURE AND ICE GROWTH,E-I E.2.4.257 LATE STAGE III DEVIL CANYON RESERVOIR OUTFLOW TEMPERATURE AND ICE GROWTH,E-I E.2.4.258 WATANA RESERVOIR TEMPERATURE PROFILES,LATE STAGE III E.2.4.259 WATANA RESERVOIR TEMPERATURE PROFILES,LATE STAGE III E.2.4.260 WATANA RESERVOIR TEMPERATURE PROFILES,LATE STAGE III E.2.4.261 WATANA RESERVOIR TEMPERATURE PROFILES,LATE STAGE III E.2.4.262 WATANA RESERVOIR TEMPERATURE PROFILES,LATE STAGE III 1 I E.2.4.263 WATANA RESERVOIR TEMPERATURE PROFILES,LATE STAGE III E.2.4.264 SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 150, LATE STAGE III E.2.4.265 SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 130, LATE STAGE III E.2.4.266 SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 100, LATE STAGE II I E.2.4.267 SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 150, LATE AND EARLY STAGE III E.2.4.268 SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 130, LATE AND EARLY STAGE II I E.2.4.269 SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 100, LATE AND EARLY STAGE III E.2.4.270 SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 150, LATE STAGE III,E-I FLOW REQUIREMENTS 851017 liii Number E.2.4.271 E.2.4.272 E.2.4.273 E.2.4.274 E.2.4.275 E.2.4.276 E~2.4.277 E.2.4.279 E.2.4.280 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF FIGURES (cont'd) Title SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 130, LATE STAGE III,E-I FLOW REQUIREMENTS SIMULATED SUSITNA RIVER TEMPERATURES,RIVER MILE 100, LATE STAGE III,E-I FLOW REQUIREMENTS SUSITNA RIVER TEMPERATURES AT RIVER MILE 130,WATANA AND DEVIL CANYON OPERATING SUSITNA RIVER TEMPERATURES AT RIVER MILE 84,WATANA AND DEVIL CANYON OPERATING SIMULATED RIVER ICE CONDITIONS,STAGE III VS.NATURAL 1981-82 WEATHER CONDITIONS,CASE E-VI FLOWS SIMULATED RIVER ICE CONDITIONS,STAGE III,1981-82 WEATHER CONDITIONS,CASE E-1 VS.CASE E-VI STAGE III DEVIL CANYON RESERVOIR OUTFLOW SUSPENDED SOLIDS,AVERAGE YEAR STAGE III DEVIL CANYON RESERVOIR-OUTFLOW SUSPENDED SOLIDS,AVERAGE YEAR STAGE III·WATANA RESERVOIR OUTFLOW SUSPENDED SOLIDS, AVERAGE YEAR STAGE III .WATANA RESERVOIR OUTFLOW SUSPENDED SOLIDS, AVERAGE YEAR liv I '1 1 1 \ I ) j I.I 1 ] 1 .1 j IJ Number E.2.2.1 E.2.2.2 E.2.2.3 E.2.2.4 E.2.2.5 E.2.2.6 E.2.2.7 E.2.2.8 851017 EXHIBIT E -CHAPTER 2 WATER USE AND QUALITY LIST OF PHOTOS Title FRAZIL IC~UPSTREAM FROM WATANA ICE COVER DOWNSTREAM FROM WATANA SHOWING NATURAL LODGEMENT POINT SLOUGH 9 APPROXIMATELY 3,500 FEET UPSTREAM FROM SLOUGH MOUTH,DECEMBER 1982 SLOUGH 8A FREEZE-UP,DECEMBER 1982 SLOUGH 8A NEAR LRX-29 LOOKING UPSTREAM SLOUGH 8A SLOUGH 8A SHOWING FLOODING DURING FREEZE-UP ENLARGEMENT OF PHOTO E.2.2.7 SHOWING TURBULENT FLOW Iv ·j ) 'J f,j 1 ,] I 1 "1 , I 1 ] I i I , 2 ...WATER USE AND QUALITY FIGURES B MILES I 4 2 MILES o {QUARRY SITEBORROW SCALE o NOTE,IMPERVIOUS I PROPOS~IJ~~~CfH~~E PROJECT•MATERIA D STAGES.OF AGGREGATE ~ 2 PROPOSED i2~1~~EINSTAGES I AND ••FILTER MA r. OF ROCK FILL INPROPOSEDSOL~RCE 3.STAGE III:ON •LL SATISFY CAVATIONE WI UIREMENTS.4.REOUIRED li ROCKFILL REQALLSTAG SCALE \ f~... LOCATION .AAP ,......./ .... BORROW SITE F BORROW SITE C E A(NOTE31QUARRYSIT A DAM SITE I NOTE 4 IATAN u [J IJ IJ \ WATANA ------------------FF~!G~RE E.2.4.1 E MAP BOR R OW SIT~~~_ -------~- I I 1 ------------~-------------~-------~--------------- 1 (] 1 ) :1 I 1 I I I I ) .) I 1 . 1 ] :] I ] ___________~F~I~G.UURE E.2.4.2· ~I 1 \oo \!.? WATANA _____-;-----.:.-_..._B_O~RR,..OW SITE D +N 3,2.34,000 J n ! -! ;] \1 '!] ,1 :'] I ] I 1 ] I I J -~--~-- 1 l -I ] 1 J / REFERENCE'S.BASE MAP FROM COER ,I97B -I""200'aM,19BI-I"'40 ,WATANA TOPOG COORDINATES IN ~~~~8)'MANUSC~II~.E~IL CANYON :~~~.SHEET 6 a II OF,ALASKA STATE VOIR MAPPING 26 _________________...,',PLANE (ZONE 4),FLIGHT NOTES I.PORTIONS OF BDEVILCANYON;:"ROW SITE LIE2MATESERVOIRLIMITS WITHIN THE PROPOSED .ERIAL LIM .AND AIR ITS BASED ONBORROPHOTOINTERPR FIELD EXPLORINVEST~A~';;ERIALS SUB~~~~ON.FINAL L1~~~~N.MAPPINGNS.TO RESULTS OF 3.CONTOU OF DESIGN R INTERVAL •REFERENCED BASE 25.TRACED ANDIMAPS.OR REDUCED 4.PHOTO TA FROM KEN AUGUST,19BI 5.BORROW .FILTE SITE E IS AR.MATERIAL AND /OTENriAL SOURONCRETEAG CE OFGREGATE. rli i .'[1 ·'11 , :. .•(] '.'LJ LJ o 8 .0 '"......... N 3,224,000 + ",~ 8o V '"..... w.-r o ~ N '"..... w+ ooo ci '"......... WATANA BORROW SITE E ooo ai N..... W SCALE 8o.. N..... a 400~OOFEET ______~F~IGG,UURE E.2.4...3 -,-------- ,1 , 1 ·1 ,1 i I , 1 i ] 1 :1 :1 I ] : 1 : 1 ;] ;1 :II ) ) 1 ,)1 J 50 -----~+-,-------------------------10 40 ~......., en -.~ u.\(,J 30 0 0 \0 I.IJ (!)a:«:x: (,J 20en C o AUGUST 1958 FLOWS FILLING SEQUENCE I ,AUGUST 1958 FLOWS -WATANA MINIMUM STORAGE CRITERIA VIOLATED . FILLING SEQUENCE 2,AUGUST 1958 FLOWS-WATANA CAPABLE OF ABSORBING HYDROGRAPH NOTES: I.WATANA FLOW ASSUMED TO BE 84 %OF GOLD CREEK FLOW. 2.RESERVOIR FILLING CRITERIA EXCEEDED WITH SEQUENCEQ). 3.NEGLIGIBLE CHANGE .IN DAM HEIGHT DURING FLOOD EVENT 4.MAXIMUM RELEASE AT WATANA 31,000 CFS (COMBINED POWERHOUSE AND OUTLET FACILITY DISCHARGE). I IlJ LEGEND: .iIL ®-_._- 5 10 15 AUGUST 20 25 30 FLOW VARIABILITY AT GOLD CREEK DURING WATANA FILLING FIGURE E.2.4.4 o 'I 0.5 0,0 J;t • O.G i.... 0.0 o .i e- ;1 r 2••... ~ D.... fa ~ m 'j ! _I I iZ48 i i I ~--...I 1 24 :1 11 12 I-! 0 I 1991 F (lUN)I~9:l •Illl t4;Iur....,I I ~tidl 2 i I j I lUll.I ,II;;:.,Lim.I iI ~..:.-.I I _I~i - .L.O,II. 16 I II-!u I ~I,.I I, I I I , w I ' I I ,'1;-I ~10 , 1 !'I .,\........ I;,P.LI ~\:-a .II:,'!"I,'.'\.JI ,~\.~wn.I '"·1 !•,.\~,J:I!I I,.! W i .'I I I I. I ~t-...I . ~!~,',,' if [!1 nAtiu.~i I VI...I:J Ii I i •0 I , 0 i I i I Ifr(..IJH -4L1 "-G IiI[P ocr NlJlf me ....no ........ I I i I.'1981 ,I LilINh,il:A5EI .......""IFILA 1-~TAtll ".lUND 0P0lA".....--- I'..FI1I51 n""FIUlIIG &1'MT5 1M HA'f .111 ! --_....PRmICliiO WlJ'lBl ~~~i • - - - -~'-It#LIlU T{'"_R'Ul1lJlEIi! ""'''"I.INTA'«POll U:YO.0 Al IiLfVAlIOtt lUi.F1 161ii5 Ii HI2.INfAl«P(]ql UYO.It Al iLtVAllOtt .14 n I'~a H'a.INTQI(£PMl U'4R a At ELlVQtlOtt 2071 F1 IU)1"1 ...ItfT~'SQl1 uvn...""5L(VDtIOtt 1040 F1 '521 •HIIi.ClK VALVE "'lOIU ~1 Iil1VA1 10N mea Ft 152118 Pl. 6.",.UJ4Qr CJl(tiT At ltL(VC.'lo-.2,4e F1 I~.'J 'H '7.L(I.I l1vQ.(lJ1Lil wt:A<fi IUBU IL5"."08 n •"'.,as HIII I .I SOURCE (APA,1984 a APPENDIX I"" NOTE.SIMULATION WAS FOR fiRST YEAR OF FILLING WATANA 2-STAGE PROJECT.TEMPERATURES FROM MAY THROUGH SEPTEMBER ~OULD BE APPLICABLE TO SUMMER OF FILLING WATANA STAGE-1- TEMPERATURES FOR OCTOBER THROUGH NOVEMBER ARE NOT APPLICABLE TO WATANA STAGE-I. WAT ANA RESERVOIR ,SUMMER OF FILLING OUTFLOW TEMPERATURE AND ICE GROWTH- FI GU RE E.2,4.S ---,~--------~--~-_._-_. ------,---"-------------------"----~--=,'-------,---~--.._--,-----------~--_._--- 2GO 20Q ~ ~l-IW :&: .11iD z:: 0 I- @ W>~IOO I- 5 /..... W /:r ,..----,.---&0 -I .II I' t I,I I I ilL'"L£VD..wrt£, 0 I I 10 16 TEHPERATURE-ICEL5JU51 A..A5t<R I"Ql.ER AUTHORITY CASE.1111 WA9IFILA -WATA~FlLllNG OPERATION 1111 _tINA I'IlD.KI I IJMI:M tIIlO. LEGEfIIl.WATAt-R RESERVOIR PREDICTED TE~PERATURE PROF(lE6:TEttPERA TUftE PRI:J='I Lf5tHAYtOOt --------t .JU~1981 tAUA-£8R6CO ..DINT VENllltE-----t ~LY 1981 $<URCE'APA 19840 APPENDIX IV _.....-1 FIGURE E.2.4.6 m ~ ~UilJ I I o ~ ~ 17 7 .. -t ir i i .:J::n.... +l•i.<",L·~ . , ,, PH=1=1t~il " I• ,, i I I I I i ""i ""i I 1 I I i i 1 i i =f=R.1i J., 'I I ./---", ~ 5.... W :J: 16 WAT~RESERVOIR TEtWERATURE PR[J=ILE5 tAUA-E1I&:O .JlINl V'EHllltE UlIMA RlQJECt 1 IMQIIIlIIlIEL A..R5I<A fOW£R RUTHCR I TV _.-"'-1 FIGURE E.2.4.7 ' ,10 TEMPERATURE-ICEL5IUSI i I o~, 'II I I !j I ! , I eASEe ••WASIFILA -WATM FILLINC OPERATlO~•• LEOEMl.Ii! PREDICTED TEt1PERATURE PROFILES: lAUWST I~Bl . • - - - -.:.:.-"I SEPTEt1I£R I~Bl - --.......'l OCTOBER 1198~ SOURCE:APA 1984 a APPENDIX IV I ~-----:::.-- --,".'...__._~_.,.- +.*.•~-._--,-----.--'-_-:;__cc..'.'-_.,_.----'__•....J ~---,".- 2(jQ 200 - mt- LaJr "aria 11: 0 t- ~"., w -, >~,~IOO ...... t- 5.... ~..\......'ISO ............ ,,, \.IIUlM LEvaOUIUT 0 ,. 10 16 TEt1PERATlfiE -I CELS I U6 • A..R5KA f'flWER RUTtOU TY CASE •••WR81FILA -WATAfIR FILLING OP£RATION ••_,'""MD.S:1'-.IIIrMIIt I'lIIIIL LEOENl.WAIAN\RESERVOIR PREDICTED TEt1PERRTURE PROFILES:TEMPERATURE PRIJ=11.£5 1 NOVEHBER 1981--------,OECEHBER 19B1 tIlRZA-£BR6CD JOINT YEHltfiE-----1 ~ARY 198Z SC URCE:APA 1984 d APPENDIX IV _u_1 FIGURE E.2.4.8 ,-i....,i,••i ~ , .,. 1-II I I I I I ..! I I L~II I I -;- I i -~--_.- .... , I I I I ,.I I Ii . .! i 'i' !I I I.i I I I ~~ laJ>~'ClO+- .... ~ ~I-.... ~ ..IIiD I •I I I I li... 2 .- ~ ~ -;- &0 .i -~.'~~ll-I I I I '"f\II i I I I lla ~1lA6CO .AUNT VENl~E UUIIA fIRD..EI:r I DlIUtI lGIO. FLR6KA POWER flUTt1(fl1 TV WATANR RESERVOIR TEtfJERRTURE Pft(I='1LE6 -~~T fiGURE E.2.4.9 I LON L£\IO. :IIJJlD o I :6 ..~ :TEJt=tERATlfiE r(CEL61U61. ,' i,I!!I CASE.11I11I WAS.FILA -WAT~FILLING OPERATION IIIU1.i 1---------.-I LEDENl.··I I PREDICTED TEHPERRTURE PROFILE6. 1 FEBRUARY 1982!I•••••_.-t HAReH 1982 I I -----1 APRIL 19821 i SOURCE:APA 19840 APPENDIX IV i !! -. ,--~"=-0.;----.~.-.......... ~,,1tfn ~/p ~ .... U) ffi ~ :::E o 2 .2 .3 .4 .5.6.7.8.91 2 3 4 5'6 7 8 9 10 2 3 4 5 6 7 8 9 100 MICRO EINSTEINS PER SQUARE CENTIMETER PER SECOND 2 3 4 5 6 7 8 9 1000 LEG.ENID: DAtA-...-:t----------- DATA SOURCE'RaM .982 I STATION STA.II STA.II STA.II STA.II DATE JULY 15,1982 JULY 28,1982 SEPT.10,1982 AUG.10,1982 EKLUTNA LAKE LIGHT EXTINCTION IN SITU MEASUREMENTS FIGURE E.2.4.10 Lf) r-r..,....,....,--r-..,....,.....,.....,...,....,......,...,...~r-T"..,......,....,..........,....,...,.....,.........r-T'...,.....T"'T'CD ,I .-..... ~J wa:: ~} l J-004 ~'\ e:( I- (J) o [' I .i ,} ) } \ I J ..zo-l- e:( > W ....J W W (.) e:( LL. IJ)a: lLL ":;) lD ~ [--"""!---" """""I" !-"1- """""""""" ""0 ""Lll 0 0 0 0 0 0 0 IJ)0 IJ)0 LJ)0 IJ) 0 0 en O'l CD (D l' (\I N - ----(J..:i>ND]1~A313 3J~~~nS ~31~M ,) ,I . J '} 2050 i ,i •,iii ,i •I I ;:2000 1 LL- I-- --- 1---- - - - - -_I I r---r u - u 'I I I~1950 -I I I I I I I lu.u _ t-cr>~I I I I I Iw1900ru- - -t I I I I I wucr LLac ._~ ::J 1850 Lt-OENrb I (f)MAX-r:---_~AVO~.MJ N---•-- ----3crII:z 1800 1750 I I I I I I I I I I I I I JRN FEB MRR APR MRY JUN JUL AUG SEP OCT NOV DEC WATANA WATER SURFACE ELEVATION MONTHLY SUMMARY,ST AGE I FIGURE E.2.4.12 ,... 0 (D ";J ~ LJ) [' -' ..J en 10-'"0-L&".(' U C ..).m 11 lJ') ~J J LJ)-~(D.'-·x - a::j. ~~,. ~~,~0 (D l.""" ~.~~1--·~--10"'",..i~~~..-!--~.....I ~-~~~.~~.-..- lJ'" (.",f lJ) Ln J L..o' lr ... j a-.....lJ) oooo LJ) oooo "'¢ ooo ~ <9;:jJ)MO"'.:lNI oooa N ~lO"et3S3ti ooao- o IJ.) (D I-f W C!' <C I- (JJ.. 3:o ...J U. Z a:-o > 0: W (JJ W 0: <C Z <C I- <C .~- j ~') '<1'. N u.i~) ::J C) ~l ,j .1 ~ j -j ) I I i ) ) I I j .I' ~ BE ~ .r 0 0 a 0 0 0 0 0 0 0 a 0a0a0 "¢m N -(53J)MQ13Ina CfIOf\Cl3S3~ "'".... "'"N.w W 0:::::> 1J)£2u.. ()) 0 OJ H W (!) <C I- 1J)CIJ('.. ~ 0 ...I U.a I-('::> 0 a:-0 1J)>to a: W CIJw a: a e:(to Z e:(. l- e:( 1J)3: 1J) a Ul a :£1 ~ N ~j :::l C> ii"'j 1 I ( .I J ~) I I I I j J J j I 1 .....r I lJ)W [' IJ) CD o LJ) ..zo-..... e:( a >['W ..J W Wo Lf)« c..o LL a: :::> (J) 0:o W c..o ..... <C 3= <C tf)---Z Lf)<C..... <C 3= - o Lf) l' a 0 a 0 da~0 ~0ammroro N ---(l~)N011bA3t3 3J~~~nS ~31~M '.L" I ~ I··I···I· .... , -_.~--i- .. 1--- .-1-1- I--i- I i-·--I··· ..1- a IJ)a (\J L__ 2050 .iii iii iii ii'i -2000 I I I I I I l I I I I I I...... LL ----I 1 1---- I 1------ 1----- 1----- z I I I I I II-f I I I I.-----01950 I a_at-4 ~­ ([ > ~1 I 1 1------Iw1900I I I I 1 I I I w U IT LL I In:::_ ::J 1850 L ~GEN[ (J)MAX-_ n:::AVG~MI N----------I([ 3:1800 1750 I I I I I I I I I I I I I JRN FEB MAR RPR MRY JUN JUL RUG SEP OCT NOV DEC WATANA WATER SURFACE ELEVATION E-I,MONTHLY SUMMARY,ST AGE I FIGURE E.2.4.16 .I j I I I i , J 1 I j I H W CJ <C ן- m.. Ifw o lD .. o ;: ['0 ...J LL Z o lJ) lJ)fE LD 0' ::>a:w (/) o W LD a:: <Cz <C I- Lf)~--< lJ);: ooaao- aaoo N CilOACi3S3Ci oooo ('l") IS.:l:J~MO"l~NI aaao ""t oooo LJ) I : 1,.1 ... I v J .J f.D \,a,._..... u ,.. I-- C.-J,en Ln ~I J, &..J ~)( r---i":7 i-- ..r ... r'" w.c ...., 1·.-1-..··V· --- :;;I' .. I ./ ~ ..I or -I··J...i ....~..... ! I )J ! II I -- i-I: I..!!: I....!:: ......: --r -Iliiiiiii: .. T I-e: U1ro aro ar-- lJ) LO o· LO Lf) lJ) o lJ) CX) ~ N.w wcr:: ::l (!) u. H ·W (!) <C I-en I-iI W.. ~ 0 -I I.L. I- ::> 0 0:-0> 0: Wen W 0: <C Z <C I- <C ~ aaao -.:.t oooaen (S.:lJJ a 0a0a0o0 N -MOI~lnO ~lOA~3S3~ o I I, :=R i ! I, ~r ! I i i I i i i i i PJI i LJJ I ~~ I I ,i i I i 'I i " ,"~ l"\. / '- I'. "- I I 000 -t=H=t::t=1=t:=+:~~::t::~=t::t=~::t::t:t:t=t:::t=I::t:=+:t=I::t:=t::t=1~::t=:t=t::t::::t=1=I::t::t=t=t::J I 0000 I I I I I I I I I I II I I I I I CCI I I I I [I I I I I I I I I I I I I I I I I 1 I J I I o 12 24 36 I 4B 60 72'B4 T1ME. 96 lOB HOURS 120 132 144 156 16B 180 I WATANA OPERAT Ilo~s ONLY GU I DE E-VI.I [ CASE ACB *I ~ARZA-E8n5CO SUSrTNA JO[N~VENTLREI'JLLY.1985: DISCHARGE HYDROGRAPH AT LRX-23.R.M.120.26 IOXB~II SIDE OiA~ELJ FIGURE E.2.4.19*SEE TABLE E.2.4.5 FOR IDEiFINITIO~OF IIcASIEU:.· ,!' t_,.~_L~~"---'_.,~- 522 iii iii J II I I I I I I Iii iii iii iii i I I I I Iii iii I Iii iii i J--+-I b1 I I I I I I I I I I I I I I H--f-+-+-+--+I I I I I I I I ~-1-I-l-+-H-4-t--_.- 1-+--1--+-+-1-+--1-I I I +I I I I I 1 I I I -I I I I I I I 1-.....I I I 1-1-4-I I I I I I I +-1-1 I-t-t-+-t-I I I I I I I I 11-+-+I I I I I I I I I I I I I I I I I I I I I I I I I I l-+-I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I .521 1 I I I 1 I I I 1 I I I I ..J 111111111111.1111 (f)1111111111.I I I I I I :>.:520 I I I I I I 1 I I I I 1 I 1 I 1111111 I I I I II--111111111W11111111wIIIIILI I I I519 -+-+.......-+--1-+I I I I I I I I I I I I I I I I I I I I I I I I I -1-+--+-I I I I --1-+-1--+-1- ~-+--+--+-+---+-+-+-+--f---+---t--t-+-+-+-ttl1tttt ttttLt I I I I I I I I I I I I I I W 1111111o111111111111CIIII 1I-I I I I I I I I I(fJ SIB 517 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I o 12 24 36 48 60 72 84 TIME. 96 108 HOURS 120 132 144 156 168 180 WATANA OPERATIONS ONLY GUIDE E-VI. CASE RCB * H~RlA-E8ASCO SUSITNA JDINT VENTURE JULY.1985 RIVER STAGE HYDROGRAPH AT LRX-23.R.M.120.26 IOXBOW If SIDE CHANNELJ FIGURE E.2.4.20 SEE TABLE E.2.4.5 FOR DEFINITION OF IICASEII 18016815614413212096108 HOURS 721 84 TIME. 604836 1 2412o _il.-1-. Li i : l-I-~,'1 I~,'~ -'-1 ~-',--'-'-~~~ -~+-'-,~'-'-~...~,' -'-~~- -'--'---'-~,-=_-.J ----,-----~-~~------,---- .,~~~-~~,-~~--'-~~_1---,--'-~-'-~'-~~L ----'- ~~I -~----~,---.-----;-~---~--~- --------~T ' _~T -~II---J-------~--~~'---~-~---I -'~-~,~--- ----~-~~~~-~~---~- '""''I ~----- _-1 1 -1----1--~-~---_--.Je-t:~--'-~'..•-.J __I "- ......."'-'--_1L~_-.J "-~-'I I ~~~-~,-,I -"-,~~-- iI '---L ~I j I -::J:t--F'~I ~~~,~-I ~-'- I I ~I I '1-I -. 10000 11000 12000 19000 18000 20000 ~ 013000 wC)0::::15000 IT IU 14000 UJ (J)17000 LL U 16000 WATANA OPERATlONS ONLY qUI0E E-VI.I I CASE ACC *iI i H~RlA-E88SCO SUS[T~A ~Q[~T ~E~TJ~JULv.1985 OISCHARGE HYOROGRAPH RT LRX-23.R.M.120.26 I QXBOH 1 [.S I DE CHA~EL) FIGURE E.2.4.21 *SEE TABLE E.2.4.5 .FolR DEFINITION OF;CASEII .~~~~i -.1 L-_ 522 iii iii iii ,iii ii'iii iii Iii iii iii iii iii iii iii iii I I I I I I I I I I I I I I I I I I I I l-+-t-t-I-+-t--I I I I 1 I I I I I I I I I I I I 1-- I 1 I I 1 t-t-+-+I I I I I I I j 1 ·-f--+-+-+-t--t-t--t-·I 1 I I I I I 1 1-I I I I I I I I I 1--1 1 I I I I I I I j I I I I I-l-I I I I I I I 4-+-+-I I 1 I I I I I 1 I I I 1 I 1 +-+-1-1-+- I l-t-t-t--f-I I I I -+--1-1--1.-.--..._....-......--~. -+-1-+-1--ttttttUttttttttttttu!-i..w-l--J--L-I-t--~-J-+-+--W--W-t~-I--t-t-- I I I I I I I I I I I I I I I -+-+-+-+-+-+I I I---I--t-+-I-+-+-I-+·+-I~I I I I I I ++-1-1--1 I I I +-+-1 I I I I t--+-t-t-+·-t-+·+-t-+-I-I I I I -I I 1 I I _.~.-+-+-+-+-i I I I-+-++-+-- 1 I I 1 I II I II I I I It I I II I I 1 I I I--t--t-++-t--+-t-++I II I I 1 I II I I I I I I I I I I 1 I I I I 1 1 .+-+-1-+-+-+-+.I I I I-I I I t-t-+-t--I-I I I I I I I I l--..J..---J- I I I I I f-4 I I I I I 1 I 1 1 I I +1 I 1 I I I·-+-I--++-+-I I I I I·I I I 1 I I 1 1 I 1--1 517 1 I I I I I I I I 1 'I 1 'I I 'I 1 'I I I I I I I I I I I I I I I ,I I I 1 I I I I I I D 12 24 36 48 60 72 84 TIME. 96 108 HOURS 120 J32 144 156 168 180 WATANA OPERATIONS ONLY GU]DE E-V]. :RSE qc:c * RIVER STAGE HYOROGRAPH AT LRX-23.R.M.120.26 I OXBOW 1I 5 I DE cHAt-l'-lEL I W'-'f;Zi=l-E8~5C~SUS['''lA JOlW VENTURE Jl..LY.19B5*SEE TABLE E.2.4.5 FOR DEFINITION OF IICASEII FIGURE E.2.4.22 - f i i i i i 1 i i I i ~ I I IllY"I I I l2S, I III I " I I "'I "'I IL l-=-]=-.-L:::J ___~~ I i \ L.7 , 180168 I i i i I I i i i I ~ ~ \IF 156144 , \ 132120 r-t ..... 96 108 HOURS !::ft I i i I, I; 72 84 TIME, 60 1-- 36 48 [ OJ I"-,-I i i CD I i ~ [ I I j I 24 ff 12 20000 19000 18000 (j)17000 LL U 16000. W ~15000 a Q14000 U) t---' 013000 12000 11000 10000 Ia ;, I ' I fWATANAOPERATIONS ONLY 'GU I DE E-VI .~., 'CASE AeD *I ~P~lA-E8ASCO SUS[TNA JO[NT VENTURE JULY.1985 I ' OISCHARGE HYOROGRAPH RT LRX-23.R.M.120.26 (OXBOW (l SIDE CHANNEL) FIG UR E E.2 • 4 •23*SEE TAB LEE.2 • 4 • 5 FOR 0 kFIN I.T ION 0 File A SE"• I 522 ·521 .-J. (j) :L 520 ~. W W LL 519 W LJa t- O)518 v "-,f if -,-..., Jf--r-"\\ \I \~.......-I J \I ,\/i\ I 1\J \J \I !\\IJ \I \ IJ 1/''J \J 1\il \J / 517 Io 12 24 36 48 60 72 84 96 108 120 132 144 156 168 180 TIME.HOURS WATANA OPERATIONS ONLY GUIDE E-VI. CASE ACD * H~RZA-E8ASCD SUSITNQ J~[NT VENiURE JLLY.1985 RIVER STAGE HYDROGRAPH AT LRX-23.R.M.120.26 IOXBOW If SIDE OHA~~EL) FIG URE E.2.4.24 SEE TABLE E.2.4.5 FOR DEFINATION OF IICASEII I 1500°1111'111111;111111111 ~IIII:~ I 14000 : I, I I I I I I I I I:I :I + I I , I - I,I I,I I T7'/1 'I -I "1 .I Ii ~I I I I I I I I iI. . . .. i , 7000 I I,I I I I I I I I: ii i 6000 I I I I I I I I I I~ 1 i 6000 -I I .1 .I I I I I R o 12 24 36 48 60 I 72 1.84 TIME. 96 108 HOURS 120 132 144 156 168 180 ! I ,i , HATffiNA OPERATI ONS ONLY QUI DE E --VI,I i CASE CSA *i i HARZA-EBASC.O SUS lTNA JOl NT VENTiuRE Jl1..Y.'985 I o [SCHRAGE HYOROGRAPH RT LRX-38.R.M.132.90 t 4TH OF ..JULy CREEK 51 DE ~EL J FIG URE E.2.4.25 *SEE TABLE E.2.4.5 FOR DE:FINITION OF IICASEII ,- 643 642. -1 (f) :L 641 I l- llJ llJ LL 640 W LJa I- (f)639 .....,"-Vl/V i'-..v -..... 638 Io 12 24 36 48 60 72 84 TIME. 96 108 HOURS 120 132 144 156 168 180 WATANA OPERATIONS ONLY GUIDE E-V 1• CASE CSA * HARZA-E8ASCO SUS[TNA JO[NT VENTURE JLl.Y.1985 RIVER STAGE HYOROGRAPH AT LRX-38.R.M.132.90 (4TH OF JULy CREEK SlOE CHANNELl FIG URE E.2.4.26 SEE TABLE E.2 .4.5 FOR DE FIN AT ION OF II CAS Ell " 1SOOO 1.4000 13000 (f)12000 LL U 11000 w ~10000 a [5 9000 (f) I---"o BOOO 7000 6000 6000 i I,1 I I I I !I 1 I I I I I I I I I I ,I I I I I I I 1 i I I I ;I I ,I 1 I I I "\.I" I II '"I i'"I "\I '\'l '\I I I'I !I I II i I I I -I I I I '\.I ",: I I "'1 I I I .-r- I I I I ,I I I I I I ,- I,I I I,I I I I , !I I I I -,--i I I I I,I I I I ; I 0 o ---~-- I iWATANAOPERATI10N.S.ONLYGUIDE.E-VI.i CASE CCB *I HRRZA-E8RSC05U6ITNA JDtNT ~EN;TuRE JLLY.1985*SEE TABLE E.2.4.5 FOR DEFINATION OF IICASE DISCHARGE HYOROGRAPH AT LRX-38.R.M.132.90 (4TH OF ~ULY CREEK SIDE CHANNEL) FIGURE E.2.4.27 ~-_. L..--'L.---.....-...; 643 .642 _J (f) :L 641 I- W W LL 640 w CJa I- UJ 639 I"\.I i'/i\f "II "'\I '\I "\ /1\..11 [\..r'-...~'"1\.1 .- 638 Io 12 24 36 48 60 72 84 96 108 120 132 144 156 168 180 TIME.HOURS WATANA OPERATlONS ONLY GUIDE E-V 1• CASE CCB * HARZA-E8ASCO SUSITNA JOINT VENTURE JLLY.1985 RIVER STAGE HYDROGRAPH AT LRX-38.R.M.132.90 (4TH OF ~ULY CREEK SIDE CHANNEL) FIG URE E.2.4.28 SEE TABLE E.2.4.5 FOR DEFINITION OF "CASE" I I [ 15000 i i [ i I I I \.4000 I ,,I I i I I 1 I !I 13000 I , I I 1 I I I I I ! (f)12000 !, I ,I LL I r :0-I I .....- I "--~ U ""I ,"I', 11000 I I I.I \I \1\ W i\I !\\ \I I I', CJ 10000 \ I ,, I I I0::IaII I 2J 9000 I I I'\\I 1 " ,.... I " (f)I I ~I I 0 I I80001!i I I I I I I I ! 7000 I I : I I i I I : I I ! 6000 I I I I I I I I I I GOOO I I 72 156 168 1800122486148608496lOB120132144 !Til ME.HOURS \i !I WATANA OPERAT [ONS ONLY I DISCHARGE HYOROGRAPH GUI DE E-VI.,I RT LRX-38.R.M.132.90 CASE ceo *I ,t~TH OF JULY CREEK SIDE CHANNEL), HARZA-E8115CO SU6 [TNA .JOINT VENTURE JLLY.198p FIG URE E.2 •4 .29 I ,*SEE TABLE E.2.4.5 FOR,DEFINITION OF IICASEII ,~---""---'-'--"-------'.:...-.....-" L- 643 .642 --.J. (J) L 641 I- W W LL 640 wo ([.- (f)639 I'-'"-ir""'"""""""....................... r\I 1\I !\I \I \I \ j \I , 1 ,I II ,I I \ ~~,!\.,"\.V - 838 Io 12 24 36 48 60 72 84 96 108 120 132 144 156 168 180 TIME.HOURS WATANA OPERATIONS ONLY GUt DE E-V 1• CASE CCO * HARZA-EBASCO SUS ITNA JOINT VENTURE JUL Y.1SB5 SEE TABLE E.2.4.5 FOR DEFINITION OF IICASEII RIVER STAGE HYDROGRAPH AT LRX-38.R.M.132.90 (~TH OF JULV CREEK SIDE CHANNEL) FIG URE E.2 • 4 • 3 O' ......,;;;;::-..;;;;;°5000 ----A 2000 --.....p;J3000 2000015000 LEGEND WI:i:K TO WEEI<MEAN FLOW VARIATION AS A PERCENT OF MEAN WEEKLY FLOW AT GOLD CREEK ----WEEK TO WEEK MEAN FLOW V ARIATION AT GOLD CREEK (cfs) MEAN WEEKLY WATER LEVEL DIFFERENCES AT . SLOUGH 8 (RM 127.1)' RESULTING FROM MEAN WEEKLY FLOW DIFFERENCES AVERAGE WEEKLY FLOW.cfs 100005000O-+----.&..------L-------'----...&------.&.--- 0.5 2.0 1.0 1.75 0.25 I-1.5u.. en ..Jw>. W ..J ffi 1.25 l- e( 3: >..J ~ Ww 3: z e(w ::t -...-2--'-_. -075w . ozwa:wu..u.. is ,....-----------------------"1 1 .l 1 1 ] -:~j 1 I ] 1 1 1 1 j I 1 '.j FIG URE Eo 2 • 4 .31 :] 5000 O-l-------L.----.1.-----'-------1----.......--- 10000 1500Q 20000 AVERAGE WEEKLY FLOW,cfs MEAN WEEKLY WATER LEVEL DIFFERENCES AT 1.75 SLOUGH 9 (RM 129.3) RESUL TING FROM MEAN WEEKLY FLOW DIFFERENCES ~w 1.5 LEGENDwu..----WEEK TO WEEK MEAN FLOW (J)VARIATION AS A PERCENT OF..Jw MEAN WEEKLY FLOW AT GOLD>w 1.25 CREEK ..J ex::WEEK TO WEEK MEAN FLOWwVARIATIONATGOLDCREEKI-«(cfs)3: >1.0..J ~w 5000w 3: z«w 0.75~ ~-----W 0 ~Zw·3000 ex::0.5 20%/1 wu..u.. is 2000 0.25 1000 1 --__---__---..., I )1 I IIIi III i i I II i I I I) I 11 )] I iI···: II: I I IJ Ir1 I I I I 'I' i 1 U J ill I i!!'( :I I I 1]1 III I j 'I I r FIG URE E.2 • 4 •32 2.0 1.75 MEAN WEEKLY WATER LEVEL DIFFERENCES AT SLOUGH 11 (RM 136.7) RESULTING FROM MEAN WEEKLY FLOW DIFFERENCES 1.5 1.0 0.75 3000 - LEGEND -- - -WEEK TO WEEK MEAN FLOW VARIATION AS A PERCENT OF MEAN .WEEKLY AT GOLD CREEK WEEK TO WEEK MEAN FLOW VARIATION AT GOLD CREEK (cfs) 5000 -----..,j::\1000 ------ .... ·wwu.. 0.25 en ..J W>W ..J a:w-------.-.-._....._.-"-. ....1.25 <C ~ >..J ~ W W ~ Z <C ·w::E z wozwa:w -.It;-..Q."~--------gQ~----------_.._Q-----------_.._._._..__._...._--_.._----.-'---" O.......--a....a--"'...I---..&_ 5000 10000 15000 20000 AVERAGE WEEKLY FLOW,(cfs) FIGURE E.2.4.33 0-t---L.---lL-..I--l..-L _ FIG URE E.2 • 4 •34 20000 5000 3000 ------.WEEK TO WEEK MEAN FLOW V ARIA TION AT GOLD CREEK (cfs) 15000 MEAN WEEKLY WATER LEVEL DIFFERENCES AT SLOUGH 21 (RM 142.2) RESULTING FROM MEAN WEEKLY FLOW DIFFERENCES LEGEND ---WEEK TO WEEK MEAN FLOW VARIATION,AS A PERCENT OF MEAN WEEKLY FLOW AT GOLD CREEK / /' AVERAGE WEEKLY FLOW (cfs) 10000 / 5000 30%t //2000 20%..----~c-----~0 -0 1000 10%f 1.0 0.5 1.5 1.75 0.75 1.25 0.25 ---- SURFACE AREA VS DISCHARGE SUSITNA RIVER BETWEEN DEVIL CANYON AND CHULITNA RIVER 7000 6000 5000 .... (1) ~4000 (,) Q'J-<wa:< w (,) <3000u.a: :;:)..en 2000 1000 I o I- I I I I I 10 20 30 DISCHARGE (1000 cfs) 40 50 FIGURE E.2.4.35 'j ,1 1 'J :'j 1 I',1 .j :~j ] 1 :1 ) I ,I I ,'j ,'j ," :,I ,] ALASKA POWER AUTHORITY SUSRNA HYDROELECTRIC PROJ£CJ AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1984 HYDROLOGY STAGE I E-VI FLOW REQUIREMENTS ~~I_. ~""''''''·lfIOll I-~ DEC FIGURE E.2A.36 --- NOV ----------------.........----.... OCTSEPAUGJUL Month JUN ,~",,,,, I,, \",,.,'"I,'......'"...''~-r:-"'~----.,/---,I, MAYAPRMARFEB ~i__ --------'-~--------~~ ~ ~--------.... ----, '------- I ---I LEGEND NATURAL CONDITiON FLOWS FOR PHASE 1 OF 2-STAGE PROJECT FLOWS FOR STAGE 1 OF 3-STAGE PRQJECT JAN o o o o 110 s c h D 9 e a r n c f s THOUSP>.NOS ALASKA POWER AUTHOAITY SUSlTNA HYOIlOElECTn'C PROJECT AVERAGEW"EERLV SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1967 HYDROLOGY STAGE I E-VI FLOW REQUIREMENTS =--'~I;--=.:::.:.=-~, ~......u-"1--FIGURE E.2.4.37 NOV DECOCT LEGEND NA TURAL CONDITION FLOWS FOR PHASE 1 OF 2-STAGE PROJECT FLOWS FOR STAGE 1 OF 3-STAGE PRQJECT -,, ,\\0..\-,--...........\--....-~.,;,--\,__...._....I \......." ...__.................,10 .... SEPAUGJUL Mont.h JUN •I', :\ I I I I I !,', I , I I I "I I I I I I ",:I I i I: "I I " I,' : I,' __..,~~,I I I ,,~I :'_J'I ,IA:............,,/"-I',/~/--..,,,''-- I 1I I I I I I I 'I MAYMARAPRFEB 1,..---- ;,,=-=;=d------'-.~--,-,,,....._- JAN o 10 40 50 20 30 r> c f s i n I' S c h a r 9 ~ -'l--------'- -- D s c h a r 9 e n c f s TH 15 10 5 l__, --------..... -----------....,--.., 1'\", I \"",\'"1 ~""~"I '\,\,,'~-"'....,\ ~, ~~t,' 1 I \ :-I,...",~..../--~-~-~~-'" ~,-", 1 _/) 1------t:1 ---.,,1--,, LEGEND NATURAL CONDITION FLOWS FOR PHASE,1 OF 2-STAGE PROJECT FLOWS FOR STAGE 1 OF 3-STAGE PRQJECT '.. 1 " .J...'-~'"--,, ~ / Month (2) JAN FEB MAR APR MAY JUN JUL AUG 1 SEP OCT I NOV I DEC FIGURE E.2.4,38 ALASKA POWER AUTHORITY susnHA HVOROEl£CTniC PROJECT AVeRAGEWEEKi.YSUSiTNAiiivER- FLOWS AT GOLD CREEK FOR 1970 HYDROLOGY STAGE I E-VI FLOW REQUIREMENTS --·~I:-==-=-=:-....I'~MOII:JiIoA......... ALASKA POWER AllTHORITY SUSrtNA HYOROElECTRIC PROJECT -AVeRAOniiEEKLy SUSlfNAii~ FLOWS AT GOLD CREEK FOR 11181 HYDROLOGY STAGE I' E-VI FLOW REQUIREMENTS ........·--1 i ~_.,_. ~........"aICll'1 1-- DEC FIGURE E.2.4.39 NOVOCT LEGEND NATURAL CONDITION FLOWS FOR PHASE 1 OF2-STAGE PROJECT FLOWS FO~STAGE 1 OF 3-STAGE PRQJECT --', \/--, \/'~,.\_'---.,.\ _.-1,'"~\...~............\ SEPAUGJUL , I I I ~~ ; I I I !i'~I I I I ,I I I I I I : I I I:, I I:, I I !! \ I'...I JI,I-,...., "I_'(----..,j I I JUN t-loin l-.h MAY , ; ; ; ; ; ~--./;"'-. II .."-- I I MAR A~RFEB --:---- ---~----.......-'-, "-.. ""'-- JAN o 10 40 20 30 THOUSANDS 50 c; f, d r; g' e i! n D i s c h THlDUSANDS o LEGEND NA TURAL CONDITION FLOWS FOR PHASE 1 OF 2-STAGE PROJECT FLOWS FOR STAGE 1 OF a-STAGE PRQJECT ~\ ~""--',~to --'"/'\ I ',.r',, "''I..~:/ \ \.,--.............., '- ,-\ I \ I \.,\ I, I I ,I/'-':""/\I I '/\\ /,'\--~'-..._--,;'\I,'v '\,I I I I,, I, I,,,,'- - '-, '-\ \ "'", \ "'... \ \ \ \ --., ------..... 5 o 5 D s c h a r 9 e c f n s Month ALASKA POWER AUTHORITY SU5ftNA HVOROflECJmc PROJECT AVERAGE wEEKi.Vsii1i1fNAiii~ FLOWS AT GOLD CREEK FOR 11182 HYDROLOGY STAGE' E-VI FLOW REQUIREMENTS FIGURE E.2.4.40 1~~E--1-~I NOV DECOCTSEPAUGJULJUNMAYAPRMARFEBJAN o / V / / / I 548 o 10,000 20,000 30,000 LRX 28 RATING CURVE(2) GOLD CREEK DISCHARGE (CFS) MAY JUN JUL AUG SEP 13-19 10-16 15-21 12-18 9-15 MINIMUM flOWS 90%EXCEEDANCE SEP 9-15 CHANGE MAY I JUN JUl AUG 13-19 10[-16 15-21 .12-18 5~/~~~C:EL~~~E WEEKLiY AVERAGE WATER SURFACE ELEVATIONSI!•. .AT RIVER MILE 124.4,STAGE I LEGEND: NATURAL 55.r-1 ~-554-~00-t?~.~>!.>;.~III lI)-l-ll)I- w 0 0 w w 0 w u..0 0 u..0 -z mf .,.M ZC') 0 ....0«.... ~eo:::«I-::::>eo:::<t -552 ~::::>>to- W Z «w ...J Z ...J W W 550 I-I I I:I I I I I I I I I I I I I I 550 556 E!liW&l1JliiiiF.......-'1 I I I I Ifjflf$:t·AWIjfr'l?~-'I I ~I 556 - - -WITH PROJECT ,558 558 iL.·,,·•.L.w.w.tL.li.• •a , 548 . MAY JUN JUL AUG SEP 13-19 10-16 15-21 i12-18 9-15 MAXIMUM FLOWS NOTES:10%EXCEEDANCE 1.WATER SURFACE ELEVATION ABOVE RATING CURVE 2.RATING CURVE BASED ON COMPUTATIONS AND OBSERVATIONS (HE,1984-)MIDDLE AND LOWER RIVER WATER SURFAcE PROFILES AND DISCHARGE RATING CURVES. FIGURE 2.4.41 ----.-l .~.~ FIGURE E.2.4.42. / V / V / / I- 620 622 612 0 10/000 20/000 30/000 LRX 35 RATING cURve(2) GOLD CREEK DISCHARGE (CFS) MAY JUN JUL AUG SEP 13-19 10-16 15-21 12-18 9-15 MINIMUM FLOWS 90%EXCEEDANCE EL EVATlON CHANGE MAY JUN JUL AUG SEP 13-19 10-16 15-21 12-18 9-15 MEAN FLOWS 50%EXCEEDANCE WEEKL YAVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 130.9,STAGE I PRE-PROJECT 620 622 612 I I I I I I , 618 618-........w wwwu.u.--z zaa ~616 ~.... N «-616 N > W -0 W ~0 ~ w 0 w 0..; "Ot.... 614 l-II ~I I I I I I I I I I I I I I I I 614::::>...<t Z MAV,JUN JUL AUG SEP 13-141 10-1615-21 12-18 9-15 AXIMUM flOWS NOTES:10%EXCEEDANCE I.WATER SURFA e ELEVATION ABOVe RATI G CURVE 2.RATING CUR E BAseD ON COMPUTATIO S AND OBSERVATIONS (HE,1984-)M DOLE AND LOWER RIVER WATER URFACE PROFILES',. AND DISCHAR E RATING CURVES ...·- ~.,.. / / / I r- 748 0 10,000 20,000 30,000 lRX 57 RATING cURve(2) GOLD CREEK DISCHARGE (CFS) MAY JUN JUL AUG SEP 13-19 10-16 15-21 12-18 9-15 MINIMUM FLOWS 90%EXCEEDANCE SEP 9-15 EL EVATION'CHANGE MAY i JUN JUL AUG 13-19 i 10~16 15-21 12-18 MEAN FLOWS 59°/~EXCEEDANCE WEEKI'LY AVERAGE WATER SURFACE ELEVATIONS !.AT RIVER MilE 142.3,STAGE I LEGEND: PRE-PROJECT ---WITH PROJECT 758758•. 754 754-I-~I- W 0-W W 10 W LL ....LL-0 -Z 0 Z 0 0 0~~ ~752 ~!Ci -752....>«>w c;:w -'::::I -' W ~W Z 750 t I II I I 750 756 L ft&!WiNt¥iI~}~l&i@l1 I I I ~;,'!!iKit¥3i@,lwfiJt4,@,lm I I I 756 748 , MAY JUN JUL iAUG SEP 13-19 10-16 15-21 112 -18 9 -15 MAXIMUM FlOWS NOrES:10%EXCEEDANCE 1.WATeR SURFACE ELEVATION ABOVE RATING CURVE 2.RATING CURVE BASED ON COMPUTATIONS AN D OBS ERVATIONS (HE,1984-)MIDDLE AND LOWER RIVER WATER SURFACE PROFILES AND DISCHA~GE RATlNq CURVES. FIGURE E.2.4.43 .0----.- D s c h a r 9 e T NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 1 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS 4.E-VI FLOW REQUIREMENTS LEGEND 6%EXCEEDENCE FLOWS 50%EXCEEDENCE FLOWS 97%EXCEEDENCE FLOWS ~--./..........-- ~ ....'"".....,""........ \. ,--,,, ,'~-\'~~~'"",'---.-\ \ \ \ \,------"\-~ '\~\.,,~,-"..--''-' I,,,,, I"r-.......~--- -------~'""--','I ~/~-"/__/I......-- ",--- ___I -~-I-,-; ------------... os c f n FIGURE E.2.4.44 o I I I--r-I I I I I I I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV Month DEC ALASKA POWER AUTHORITY SU5I1HA HY'DAOELECIRtC PAOJECI SUSITNA RIVER STREAMFLOWS EXCEEDED 6 ....50 ...AND 97" OF THE TIME AT GOLD CREEK ---.:..-1- --.--1-f - ALASKA POWER AUTHORITY • Sl.f'!;1THA ~l(ctf'IC PRO..E.ct SUSITHA RIVER STREAMFLOWS EXCEEDED 6"OF THE TIME AT GOLD CREEK ~~I .---.;,\....I'. LEGEND NA TURAL CONDITION FLOWS FOR PHASE 1 OF 2-STAGE PROJECT FLOWS FOR STAGE 1 OF 3-ST AGE PRQJECT DEC FIGURE E.2.4.46 ~-~/,---/', NOVSEPOCTAUGJUL Month ,--'UNMAY~PR! ' --- MAR ----:------ JAN!FEB -~illllllllllllllllllilli ili0~~~i~~~~~0Y0~~~NOTES:1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 1 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS 4.E-VI FLOW REQUIREMENTS o 10 THOUSANDS 60 50 D i s c h 40 a r 9 ~30 i c 20 f s ALASKA POWER AUTHORITY ~N4 HY'OAO[l£CJRIC PROJEct SUSITNARIVER STREAIIFLOWS EXCEEDED 60S OF THE TillE AT GOLD CREEK --s::...-I_----.;,....I'~ NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 1 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS 4.E-VI FLOW REQUIREMENTS LEGEND NA TURAL CONDITION FLOWS FOR PHASE 1 OF 2-STAGE PROJECT FLOWS FOR STAGE 1 OF 3-STAGE PRQJECT ,, DEC ./ ./ NOVOCT FIGURE E.2.4.46 , I \ \ I I,, \--~/...,',....----'.,/...."," I '," SEPAUG MAXIMUM=35.000 cIs Month ,JUN I I ~-'....I I 'I .. I'I I '_I I ---- I I '.....I / .....r-' I '"I .I '/,'"- I I / I,, I, f MAY ....... APR --, MAR \ \ \, , \ \ \ FEB ---------..., ......... ,JAN -----------~-- o 5 o 5 15 10 T D e c f 9 a r n s s c h 10 ---,-----......... ALASKA POWER AUTHORITY SUSIlHA HYtJRCJIElEC'RIC rROJECI SU8ITHA RIVER 8TREAMFLOWS EXCEEDED g7Y.OF THE TUIE AT GOLD CREEK ~-=-l_ ........·-1-I - 4.E-VI FLOW REQUIREMENTS NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 1 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS ,, LEGEND NATURAL CONDITION FLOWS FOR PHASE 1 OF 2-STAGE PROJECT FLOWS FOR STAGE 1 OF 3-STAGE PROJECT DEC .,--'......., FIGURE E.2.4.47 /",~ ~ ~ ~ ~ ~ .,-- ~ ~ NOV .,--- SEPOCTAUGJUL Mon:th MAXIM,-,M FLOW=35.000 cIs JUNMAY ,, - MAR ....... , ",, FEB ------:---'---- JAN o 5 15 20 THOUSANDS 25 n! c! s f 9 e a r s c' h D '----.d "~-,-. AlASKA POWER AUTHORITY SUSRNA HYDROELEctRIC PROJEct-- SUSITNA RIVER STREAMFLOWS EXCEEDED 8,110,AND 97li1 OF THE TIME AT GOLD CREEK ....-zA..:..,.......I_. ...,....·....1-"1-· 4.E-I FLOW REQUIREMENTS NOTES: LEGEND 6%EXCEEDENCE FLOWS 50%EXCEEDENCE FLOWS 97%EXCEEDENCE FLOWS 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 1 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS DEC FIGURE E.2.4.48 --- /...-...,~.. -- AUG I SEP I OCTJUL ,--" I '.,\,\,\,/.........\ ""...,"-\", ,, \'. \\\..,',,-'",'''"...._" "-'-- Months MAY·JUNAPRMARFEBJAN ------------\:,. \"\I "I_______'..I I --.'I I-.......................'---~~..."//-.:::.-::.--,';--- 1 ANDS c f n 9 e s s c h a r D D s c h a r 9 e n c f s THOUSANDS 60 50 40 30 20 10 ------------" " o Mont.hs NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 1 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS 4.BETWEEN JUNE 10 AND JUNE 16 THERE IS A SPIKE TO 45,000 CFS 5.BETWEEN AUG 12 AND AUG 18 THERE IS A SPIKE TO 23,000 CFS 6.BETWEEN AUG 19 AND AUG 25 THERE IS A SPIKE TO 18,000 CFS LEGEND I NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS FLOWS FOR E - I FLOW REQUIREMENTS -"*................ AlASKA POweH Al1THORITY SUS1lt«tf"f'OAO£l£C1RJC ~c, SUSITNA RIVER STREAMFLOW$ EXCEEDED 6"OF THE TIME AT GOLD CREEK FIGURE E.2.4.49 •,,• ______J 1 - ------------ \ ALASKA POWER Al11HORITY str.i11HA tfY(Jn()£lECJJ-e PRO.-:CI SUSITNA RIVER STREAMFLOWS EXCEEDED 150'1.OF THE TIME AT GOLD CREEK ~.:..~I-,---I-I ~ LEGEND ___NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS 4.BETWEEN JUNE 10 AND JUNE 16 THERE IS A SPIKE TO 45,000 CFS 5.BETWEEN AUG 12 AND AUG 18 THERE IS A SPIKE TO 23,000 CFS 6.BETWEEN AUG 19 AND AUG 25 THERE IS A SPIKE TO 18,000 CFS FLOWS FOR E - I FLOW REQUIREMENTS NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 1 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS FIGURE E.2.4.60 Mqnlhs JUNFEBJAN 5 o 5 5 o 110 THO~SANDS o D 9 e a r s c h n c f s A!..A8ItA POWER A\1l1fORlTY susrtNA H'l'tJIROElEcrRIC mo..£ct SUBITHA RIVER BTREAIIFLOWS EXCEEDED 97"OF THE TillE AT GOLD CREEK ~I- ~·-I-r - 4.BETWEEN JUNE 10 AND JUNE 16 THERE IS A S~IKE TO 45,000 CFS 5.BETWEEN AUG 12 AND AUG 18 THERE IS A SPIKE TO 23,000 CFS 6.BETWEEN AUG 19 AND AUG 25 THERE IS A SPIKE TO 18,000 CFS NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.sf AGE 1 OF 3-ST AGE PFtOJECT 3.AVeRAGE WEEKLY FLOWS lEGt:ND -~-NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS FLOWS FOR E - I FLOW REQUIREMENTS FIGURE E.2.4.61 ,/ /,- / ,",.,,., ,.,.-,'...... Months -....~--',' -._----,,------;~.".... " 5 o 15 10 20 THOUSANDS 25 s c h D e a r 9 n c f s --"-'--' ALASKA POWER AUTHORITY susnNA HvonOElfCtmc PROJECT AiiERAGEWEERLVSUSITNA RIVER FLOWS AT GOLD CREEK FOR 1984 HYDROLOGY STAGEr ..---~.:..~I_. ~""""I;;,r I - ...--- FIGURE E.2.4.52 Mont.hs ,I~'.'I' •II I I '\I' 'I I I ' I ,,J-:...',t,~~"_-'J,',... f,,,, '\.---'" .""," ~~J_J-J-~- -------·--'-----r-··-~---r_---·--r----··-r-- MA Y JUN JUL I AUG SEP OCT NOV DECAPRMARFEBJAN ----,r-----,~ --'-=.----~'-<:---.-:----..--_J ~ '-----------iio 10 20 30 c f TH~USANDS 80 -----.----LEGEND NATURAL CONDITION 70 J 1\I ---FLOWS FOR E -VI FLOW REQUIREMENTS D I I I\I FLOWS FOR E - I 60 FLOW REQUIREMENTS Is c h 150a r 9 e 140 s n THOUSANDS ALASKA POWER AUTHORITY SUSflNA HYOROElECTRIC PROJECT AVERAGE W'EEKLY SUSITNA R'VER FLOWS AT GOLD CREEK FOR 1967 HYDROLOGY STAGE X ~~I;'.,- ::::::;,~;;;;---=t'~,.~_ LEGEND ---NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS ----FlOWS FOR E-I FLOW REQUIREMENTS DEC FIGURE E.2.4.5:1 ---I ~ I I I I I I, I " " MOtNTHS j) ./1/,' /,' 1 1 MAR .,AlpRJAN -----.....,~:-----....."-~-~---"~"-- ~- o 10 50 D I 40S C H A R 30G E I N 20 C F S '---;-"'-'--'~ ___J TH~USANDS 30 ALASKA POWER AUTHORITY f-AVER~~t~~~R~i';iC~~'~;;~:~'VER FLOWS AT GOLD CREEK FOR 1970 HYDROLOGY STAGE J: ~;..~I_. ~-·""'&I""".I'- DEC FIGURE E.2.4.54 NOV LEGEND ---NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS .----FLOWS FOR E - I FLOW REQUIREMENTS J ) ,,- ./--...../'".../,'"~....~''",:\.....".. OCTSEPJULAUG MONTHS I I I I I I -----:t,-------.- :)'\///\ I '--.' I / Y I I I, I ~:i -_/,,, -' APRFEBJAN ----, --------.................------..-.._-------=- 5 o 10 15 25 20 D I S C H A R G E C F S I N THOUSANDS 50 ALASKA POWER AUTHORITY AVER~if;;~~K[':~~~I~~:~IVER I FLOWS AT GOLD CREEK FOR 11181 HYDROLOGY LEGEND ---NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS .----flOWS FOR E - I FLOW REQUIREMENTS DEC FIGURE E.2.4.66 /","--"', / /..,....,..._--." t", I 'I I I ,I ,I ,I ,I I ,I " " MONTHS <',,,,, f I I , :I., :I,, f I, I i:I'~~I I I'I '~:"""I/~:'-..I I ' I'i/~,V I '/-.-// '~'__""I'. ..., APR : I MARFEBJAN -,.-----...,.....,-~--........... --·...............i,'"+- ":, !'- o 10 40 20 30 I N D I S C H :A R G E C F S P"i...........-.. THOUSANDS 30 LEGEND ---NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS ----FLOWS FOR E - I FLOW REQUIREMENTS --//~"\ / '"",",,,,, ,"...-,,,~,,' 'I " I, I I, I :"1~ I, IY'\, \,1 ,",I , I,, , I I I , I , I I I I I I I I I :1\,I"\ ,:/'--\;.::.:.;.-,I ,_, ~' A I'I// I '// I I1/ ,I ", " --------......._'\ , ""\'" \, '-1;.::':'-,..., 5 25 15 10 20 D I S C H A R G E I N C F S o JAN MONTHS DEC FIGURE E.2.4.56 ALASKA POWER AUTHORITY susnHA HyonOEtECTRIC PROJECT AVERAGEWEEKIV SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1962 HYDROLOGY STAGE X ~.!!;.;~I_. ~""'''''·I'''·'I - I I I t--+-I I I I 1- 10 11.iiiiiii2 B ~ '"""'"~-~~]03 _= ~- i frl o 102 I I I I I I I I I I I I 0:=r__l{:I 10".____....~I::::::w~I: U- ~ 8 ~10'~iiii~~~~~~~u-~lO3Y;I;~Wi~l~UI &'! If I IblI'I I I-I I I o 102 I I o w ~~~~~~m _~ PERCENT rf IlONTHS OISC1lFRf IS EQ.R.LED m EXCEE[E[) QCllHR' lOS I ~~~.~~~~~.PERCENT Of l1(JIITI6 DI9:)m()E IS EOlRlED 00 EKCEEDEO AIWt I I I----t--+I I +--t---t---I 1---+--11 I I I I I-I--+-- o ~~~~~~~m w ~ PERCENT (f"tmTHS DI9:lflRCE IS EllR-lf.O 00 [XI:£fW) I«JVEI1ER105fJfttim~~oeuw Ul ~-W .. tLlO --'---.......------W ~t _ u m ~10 3 .-w 1=~t===1- i M I I I I Io10'I ,I I I I u-~-~I-I ~lOa ~ ~ bI- o lO t+-~t---+-+-t---it-+-+-t--+-+-i 10 ill «l PERCENT OF ItONTHS DISCHARGE IS EQ.R.LED (R EXCEElED OECEt&:R LE,GEI\Ui. o 5 h:l ~10'~-ii~B.~~~ MllE.FLOW ;PERIOO WATER YEAR 1961+1983 HARZA-EBA6CO SUS1TNA JOINIT VENTURE JUNE 86 I NRT~ --- - -WITH-PRO..£CT.SlAGE I CiASE E-VI FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE SUSITNA RIVER AT WA TANA DAMSITE ;.'..1'..'i ••••• FIGURE E.2.4.57 (Page I o.f 3)" .~ ---- t--- ._--- ....-*.-:=f::.=-::- m 110 ~~~~~~~~ PERCENT OF !'mTIlS OIOCHMGE 15 EWlllEO OR EXCEIDED I1AY f-I I I I I I I I I I - -E . ~I I --- -----~ l-I I -1---"'---1-+I +-+-_. I I -1--1--+-I I I I I-- I-I +-+--~I I --t--+--- o ~110 D OQ ~~~~m ~ PERCENT (F tl}jTlIS 01 !iJmcE IS EIUUED m EXCEEll:O t1AIICH lOZ I~tl -t'-:J,:--t-L ,p I I I I I I I lOS §~~~~::=~ 10 3 -~~ 10 2 I I I I I I I I I I I 10:1 2 F-+-+--8 IX a:: jt!10· ~10 3 --+-I ._~ w -o _-3_-=0:----.-.---~.~.-_......:..~u ._~ Ul o ~ Ij l1. U ~ o tiuw:ilil--+--I I -l----l I 1--- UJ •II 10 - _.._ ~.-.--_. w .-w -...- U III ::J U w fi ~ lrl o P£RCENT OF HONTHS OISCHAlG:IS EQJALLEO (R EXCEErEO APRIL LEGEND .-- - .--------- I'-- 10 0 b b 0 SO I .- 1---..... 1-'-'-- o 10 20 51 OQ 51 110 'lO III so 100 P£RCENl (F t041HS OISCHAln:15 EQA.LEO (R EX(EErEO FEBRtmy o i5uw tJ) rrw • Il.LO l- W W LL U m ~10 1 ~ ~ M 5 lOl lO~ 10 5 2 8 ~ tr lr 10· ~ ~ u... ~10 1 i Iii olaf tIlTE.FLQl.I PERIOO WATER VEAR 1961-1983 NATL~L -------WITH-PROJECT.ST~I CASE E-VI I1ARZA-EBASCO SUSITNA JOINT VENTURE JUNE 85 FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE SUSITNA RIVER AT WA T ANA DAMSITE FIGURE E.2.4.57 (Page 2 of 3) I iO ~I 1011 ~,J ~-- !'"...l 1 Q LJ "I U ~III - rr I -----a::--... W LO·It'10 4 -- \--I- uJ ~--Il1111uIlL U U-I -!!j ([l :JL~LO 3 ~10 3 I.J.l --=lJJ L"J ~.. Lr - ~~-- U ---lrlUJ I--- o 102 o 10 2 , o ,,10 .ZlI Sl lQ 00 lID 10 .\10 lIlI 1m 0 10 2D SI Cl ~IIll 'llI III ID lUI PERCENT ll'HONTHS OISCf¥lRij£IS £(;I.fiLED m EXCEE£ED PERCENT (F ~T1lS 0I9:t-RU:IS EWUED (R EXCEEIID ,..lk .l.l Y lOS 1 lOS ....-..:::... L1 '--'--0 -_. 7 ~..1---- 0 --..-------u ~:U i-------I.J.l 1--,lJJ --UJ ""'"UJ-_. ::.--.Q:--I--i....._It:\.1;1---_--..lJJ ---Q.LO'Q.10 4 - 1-----..-..-- \--t------ I.J.l I -iLl I.J.l I iLl U.,i lL U I u i .. m III ::J :::JL?to 3 I i ~10 3 I.J.l lJJ 1=".:-1---li!,~I~I ~ U ,lrl(J), I i -o tOl Q JOZ P€.R&NT ~HONTHS D1SCHA~liS EClR~ED (JhXCE~lED 1»1 I ~~.60 10 111 ~10PERCENTOF"tOlTHS OI9lmGE IS EGUUEO OR EXCEEDED .A1JGL61 LfjGENa SEPTEJ1£R,1 ' NOH:.FLOW ,PERujo WATER YEAR 1961~IOO3 NATuRAL _..- - -IrltrH-PRO.ECr.STAGE I I : qASE E-VI HARZA-EBRSCO suSlTNA JOINT VENTURE JiliNEes,.t ., FLOW DURATI.oN,GURVES BA~~D ON MONTHLfY DISCHARGE SUSITNA·BIVER AT WAT ANA DAMSITE..I I '"..FIGURE E.2.4.57 . .(Page 3 of 3) , ._i__. 1--- I__~ PERCENT OF l1(t,ITHS OIOCl-mGE IS Eoo:liED OR EKCEEDEO ..JNIRt =---I-.___-c-----I----- - :.- ,--.= ....... r-..... -- I 10 III 1011 IlIl ~I , --'- I---!------ e-- Q ~m ~~~~~•m ~ Pl:.l«:£IIT [J'"trnTHS OI9:HIRlE IS ElI.R..lED M EXCEEDED hllYEI1ER lOt lOb D ~uw Ul 0:~10 4 t- W W U. U lOS I- llJ W U. U ~ 8 !Ii a: t 10 4 ~10" llJ ~ ~ Irl a 102 m ~10" i M a ,..--- !-- 1------- -....--- 1D b ~b to !lII I lo~~iiiii PERCENT OF IOlTHS D1SCWl1U:IS £Q.A.LED rn EXll:EIED OElD«R LE GENO lOS ~ou ~ o m m ~~~m ~ti m ~ PERCENT OF IOlTHS D1SCHAlG:IS El1.R.L£I)rn E)([E£IJ:D OCTOIER o isuUJ II) lr ~10 4 I- W W I.L U m ~10J i Mo lot -lI I I I"1-..1.~=I!'10'g ~___ ~~:~uJ UJu. u.....~IOJt1~~;~~~~~~I~uJ t.:l "~I I IMI I I-I I Io102I I NOTE.FLOW PERIOO Wl1TER YEAR 1961-1983 NRTLWL - - ---HI TH-PRO.£cr -STI1GE I CASE E-VI HARZR-EBASCO SUSITNA JOINT VENTURE .JJ£85 FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE SUSITNA RIVER AT GOLD CREEK FIGURE E.2.4.58 (Page I of 3) ---- ---.:---- --~ 1----1-- - ,---t-o 1-- -- m ~D ~~60 ~W ~100 PERCEtIT CF tmTHS D19:I-m~IS EQlR.LED OR EXCEElIO HAY ~ I--I I I I I -1------1--I I I f-4----j!I I I ---t--t--+--+---I J-I I I I I I +--+---1----- 1--- o m m ill ~~III ~IlII ~~ PERCENT OF tUHHS D19:K¥ltE IS ElUl..lED m £XCEEIl:O /'¥lRCH 1 I I )02 +-1 I I )Oll~~ lO'O p 105 f=.-....-===I:- lO'e o 102 I I ~I I I I I I I I ~ III a: ~)04 __.... l:1 lL ~lO3t:~~~~i~~~~~~~ILloa: ~ bl 0 -.----~.------,a ~u ILl III 0: W 0. I- I I I WrI--I IIJ ~II.. U lD :J U. ILl-,I I ~I 1 I iIIr-FH-=t-l bl D. ." I'-... lO:l~~__tiii o ',\0 ,2Il ill jQ ill;III 70 IlII 110 111I PERCENT OF IflNTHS OISCtRU:IS E£UlI.LED m EXCEEDED,- j ! FEBRLmY10sI. 10 2 I I~t~l~jl~]I=jl~'~I~+jt±=I'I I I I 9 8 tl! o 8uw (J) ~-- w •_n.to __l- W W lJ.. U I .JI I 1--1~'~-It'10·~ ~r~=_~~H----U i _:I~, =~10'=r=~~:---'1 .1==.l-t--H--~.~F-~,-_+-T _0:1-'If trl o ID ::J~lOa - ~;4 0:I~. M o 10'!'I I 1 I hr-t I I I 10,zo 4Q i III 90 Hili PERCENT Of 1I0NTHS D1SCHARCE IS EQJAlLED (R EXCEEDED i,,•~AIL !'.,L~OEJII I i Nj:\T~ NOTE.FLOW ..,PERmO WATER YEAR 1961- 1 1963 - _- - -Io!ITH-PRILECT.STAGE I ,:CASE E-VI HI1RlA-EBRSCO 6USITNA JOINT VENT~E ..Jt£85 I I FLOW DURA TIONi CURVES BIA~ED ON MONTHLY DISCHARGE SUSITNA RIVER AT GOLD CREEK i FIGURE E.2.4.58 (Page 2 of 3) 10:l§~~ii~~;;;:; o w m ~~~m ~~m ~ PERCENT Of J1l}jTHS OJ ~IS EllJIUED OR lXCEEIED JLY 2 8 III 0:------r----~--_~10 4 ---.... ttl II. U.... ~1031~~~*=~~~~~~~-~ lrl o 102 I I I I I I I I I I I I--+-I I I I I I I I I 10'I I I I I I I I I I I o w ~~~~m ~m m ~ PERCENT Of HONTHS OISCHAFn:IS Etl.RJ.EO (R EXCEfIEO ..u..E LO~m!!llm9aI'um _ a::t----------1-__---1--_ ttJ 10 ~_......... ttl ~ u.....~L01t~'~I~~!'~~~ If M o -m :J l;!10 3 ~ ~ !rl o 10' =-=--------- -_. ------- -- 1--..~ I~m ~iii)iii)0 m I lOS PERCENT Of trnTHS 0I9::H1lRGE IS EGlR..tEO OREXCEEDED SEPTEtf£R o b 1;i Ul 0: :tJ 10 4 .... W W II. U tila 10 3 ~ ! Iiio 102 :=1 ~1===:::t .....:..=,..c= B-r===I~-~ ..........----------'"':::.:; t--- -f--f-= - t-;;.;;.:..;; -- I-- f-- - - I- ~ -2=-.....;;;,..; I-- I--- I l- I Jo Jo I~~dJ .b !Jr-70 ~tIJ PERCENT OF tDmlS DISCWlA:E IS£llR.LEO ffi-EXCEEIED RUIl.6T LEIHIl to' azauw lJl a:: ~LO~ I- W ~ U ~TEI FLOIol PERIOD WATER VERR 1$1-1983 NAtl.R=lL --- --~ITH-PROJECr.STAGE I CASE E-VI HARZR-EBASCO SUS I TNA JOINT VENTURE ..u.E B5 FLOW qURATION CURVES BASED ON.MONTHLY DISCHARGE SUSITNA RIVER AT GOLD CREEK FIGURE E.2.4.58 (Page 3 of 3) tal 101I1~~~~~~~~~~~~~~2 ~8 8~~ «1 0::~tali I 1 ~10s1~~~§~~§~~§~§§~~~;~ ~I ~ U I I i u iii - - -I.~m~La ~,---- -=--..-q 1a~l~-~'-~-~i§-§-~~-~-~-~-~-~-I-§~~I~f~~:~-~:~ w I M ~.--+---ll---I a to J .0 10 3-t--t--t,..--t--+----11---+--+--+----11---f o ~m ~~~I~..~~•~0 m m ~G ~.~.~~ PERCENT (F I10NTIfi OlSCIfM:;E IS EllJUED m EXCEElED PERCENT(F tDUHS D1s:ma 15 Ell.R.LEIi~EKCEEDED .OCHH:R r tIlYEt1I£R lO&I 10 6 _ o ~..0 -~~5 r----f------- U -U . _..- w W .1------W ;ID Ir '.!IrWW ll.to 5 n.10 s ._ ~r ~~--- ~!~ u u ;10'_l~---.--...---...--•-"-~1O.1-~-'-~~I~~!~!!~f~~1 ~-~~ o to i I 0 10 3+--1---4---+--i---If---+--+--+---If---f~R~NT (F IlJNfHSOISCHMJE is Ell.R.L.h mE)(('f~[E{)III I PERkENT J ~THS Ol~IS ~CUUED OtfEXCEEDED I b ,I DEcEm .LEGEN)~ I . .....i'NAT~AL NOTE.FI.OWP~RlOO IojATER YE~1961ll~-----~l'~:~-~cr.STRGE '*lRlA-EBASCO SUSITNA -XlINT VENTlJlE ..u.E as I ; I i ....i FLOW DURATION CURVES BASED ON I !,. MONTHIL Y DISCHARGE SUSITNA RIVER AT SUNSHINE FIGURE E.2.4.59 (Page I of 3) ~--+-I I I I I I I I 101l_iiiiii2 8 ~10'~~iii~~~~~~~~t IL U ~10'_-L_"'+-_.w _Cl II ~ M o ~10'iiii~~~~~~~~~u lJl o 9a ~I '---1 cr F=I~.,=--+-'n.LO t=_=--t----1=.~--t-w uJ 1--LL. U.... o w m ~~~~~m @ 1~ PERCENT OF HONTHS D15C~15 EflJALlED ffi EXCEEDED FEBRLmY o w m ~c ~•~a ~~ PEIlC£NT IF t1rnTIfi DI!DWIGl:IS EIlJUEO (R EXJ:£ED£O NARCH --------~-------f-.------c------ ---- ------- ---I--- c---1-- -----------r-=:=--~ 1--- I ZIJ 0 0 &0 &0 10 III I PERttNT (J:'I'rnTHS DI9:HlRG£IS ElllA.lED OR EXC££DED KAY 10 6 o lj uw II) 0: ~lOS t- W W IL U 1lI ~10 4 ~ i lrl 5 103 PERCfNT ~HONTHS OISCHAln ISElUllLED etf EXCEEIEO APR IL LE l:!:l{) --- -_.- -- In '"4Il b ~il !In I 10 3 10 & a bu uJ Ul Il:: ~tO~ r- uJ uJ LL. (J m ~10 4 i hi o NOTE.FLOW PERIOD WA1ER YEAR 1961-1983 NAT~ - --- -14ITH-PRO.£CT.STAGE I CASE E-VI HRRZR-EBASCO SUSITNA JOINT VENTURE JUNE 86 FLOW IDURATION CURVES BASED_ON MONTHLY DISCHARGE SUSITNA RIVER AT SUNSHINE FIGURE E.2.4.59 (Page 2 of 3) 1-11-1 I I I I I I I - lOCI _~ii51IO'~ 8m ~. Ie 10li____-:...}- ttl - LL ____NATLRAL ~ITH-PRQJECT.STAGE I CASE E-VI :.:-,-: --I-- m m D ~~A ~~~~ PERCENT OF tOIHIS OI!nmGE IS EWUED OR EXCEErm SEPTEK£R ~-..I I I I t--+_.-I 1-1 t=t=t=t=t==t=E--t 1= o w m ~c ~~~~~~ PERCENT [J'"I'DlftlS OIOCHARGE IS EIUUED M EXCEElID ...u...y 10 4 ~~ 10 3 I I I I I I I I I I I lO'§ III :J l!1041~!I!~~,~~~~~~'=:'i'~:::--0:"--- i Ii!-o ]O3+-I I I I I I I I I I oauw Ul 0:,Wn.]05_1- I- w =.--w ......1=_ ~.u --~- "';'-'j ---""";""",,, o w ro ~~~~~~w ~ PERCENT [J'"IU<HlS OISCHAIU.IS EllA.LEO IF EXll£II:O JU~ 10&g§rI.~~;o 5 LJ W ill ~ W !I Il-La ~.--.r-:--+--f-' W - _ W I -_ ~I --~ III :Jl!10"I I ~;I ~I I --'-f-- ~I -I o 10 J i I I 10 D r dJ Ih -II Jc 90 I PERCENT OF ItONTHS DISCmlp:liS EllA.LEOIF EXCEEII:O RliGL6T LEGEIll ,.-,-- u..... ~10',~ 'iu Ul-U I NOTE.FLOW:PERIOD ~lER YEAR 19611-1983 j 1 I I HARZA-E8ASCO SUSITNA JOINT VENr~E ~85 ...,. i I FLOW DURATION CURVES IB!ASEDON,MOJ'JTHL Y DISCHARGE SUSITNA RIVER AT SUNSHINE FIGURE E.2.4.59 (Page'3 of 3) ..,. ~,------~,",,-- --.. "-----'------- ~m D ~~~~m ~100 PERCENT OF trnTHS DI!OmGE IS E!UlLLEO m (XC[£[(O .RUlRY w m ~~~~~~~m P£IlC£NT IF ...,.1115 01!1JmG£IS E!l.R..LEO OR E:XCEIOEO NOVt:Ift:R f--I I I I---+---f-I I 1-1 I I I 1--I I I -+---I----J- -t:= ~ - ~------=--r-__-- - --~-- ------ --r- --1-- 10 6 ~~;; -- 10"I I I I I I I I I I I 1011 o liu III U) 0:: III n.10 5..- III III... u ~104 F-,--t--t--"--j--I--i--t--r"_ ~ 0:: i lrl o 51 8 l>l lr :tJ lOs.. I:j... u... ~10 4 ~ ~ M o 103 -- - -,....-~-----"----I----',- 10 0 Il b D 91 I 10 6 p£R(ENT r1 I10NTHS Ol9Cmltt IS ~Ell.RlEO (If E)(~D DECEI1B£R LEOU(J o w ~~~~m ~~w ~ P£RCENI ll'tIlNIHS D1SCHAln:15 EWALLED [R EXCEElEO OCIOlER o is &l Ul lr it 10 5 I- W ~ U m ~10 4 ~ i hio lOa lOa~~~.~8 iIO"iiii~~~~,~~~~104t;l;t~w_~~~~ ~I I I~I I Io101I I I I I "l)TE.FLOW PERlOO lolAiER YEAR 1961-1983 HARZA-EBASCO SUSITNA JOINT VENTURE .ll£as NA~ - - - --WITH-PROJECT.STAGE I CASE E-VI FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE SUSITNA RIVER AT SUSITNA STATION.. FIGURE E.2.4.60 (Page I of 3) I----f I I I I I I I t--- I--+--+I I I I -f I I - o ~m ~m ~~~5 •~ PERCENT OF toms OJ s::tmt:L IS Ell.R.LED m EXCEElID ,~H JOIl~~ 10 6 ~~ U I II •I •I I I ••\ lXl ~104~t~~~~~~~~§§r2 f-i liS o lOa I I +--+---t I I I ---f-+----I 6 10 zb il ,iJ IiO 60 ~dl lib 1m PERCENT Of tOITHS DI!OmOE IS EaJUED OR EXCEEDED ""Y e ~lo,t~~~~~~~~~,~~....w W LL U ~ ~J04 1-------_ _ uJ~1-.- ~ lrl a Oi1 I I I I I I I I I I I a ~u ;IO'~~~~~~~*~~~~~~~w ~ , I 1 to!+--+--+--I---I--+I:---f---4---+---+,--; o ,.10..2D =0 .a :II ,10 'Xl eo !to II» PERCENT r.F IlONTHS OlSCIfffiE 15 f[lRLED m EXfEElED FE8RU:lRY!La Ii I I ,, I D 5uw Ul 0: W~lO'l----§·~I-~·~~,~,~~~~~~~~~~~-- ~---- ~LO't1t-i -~ S! B IJl lr ~LO Ii 1---"---;_.- ~, ~; ~1 U i ...1 !~I--~...~--1--1--- 1 --1-1--1--1---;..__ '-!La· ~ ~ bl D ~ ~ bl OlD!4!-~-""'}0-NT-'.....~-ltON~t~-D .....I~-HAR!lE-~ED m!Exc£tDED .L I RPRIL :lECi:!i1 NOTE.FLOW PER.•100 WAiER YEAR 195IJI198~.·-----~fi~~.£cr.STAGE Ii ..•CASE E-VI ..I 'HARZA-EBASCO.SU6ITNA JOINT VENTURE JUNE 86 I I I I ' FLOW DURATION CURVES BASED ON MONTHLY DISCHARGE SUSITNA RIVER AT SUSITNA STATION "I .'1 I .' ,1 I FIGURE E.2.4.60 I I (Page 2 of 3) ~-~-....-....--......-.'" LO i o w m ~~~~~m ~~ PERCENt (yo HONtf£OISC~IS EIlJALLED rn EXCEEIED JUtIE - I-..f'-o-__ - - ---- - -- ~ _. 10 ~~E IS ~~uh rnDEXCEE[EO 1PERCENT~HON'lis Dt ---...:. ..- i----- -- l b 60 00 ~I PEIlCENT Of IOITIS OIOCImGE IS EOlIUED ~EXCEEDED SEPTEl'I£R o rn m ~~~~~s ~~ PERCf.NT ~I'OItHS DIS::IflRG£IS EWU.ED ~lXCEEIID .n.y 10 6 10 8 I I I I I r I I 1==2 I B Ijj Q:F -It!105 -,--oy---- o ~ M Ul ll: ~10 5 f- W W tl- II m ~10 4 W ~ ~ IA 5 103 I- ltl II. ~104~"i~I~~~~~w fi i trl o 103 I I I I I I I I I I I LEGEJ.oIUlliT r-wwu. u m i:!10· w ~ ~ ~ o L0 8 to & oauw III tr~LO~ ~LO· w }i ~ M o t01 I- W UJu. U..... ~ou liS cr lt to 5 NOTE.FLOW PERIOD WATER VERR 1961-1993 ____NAT~ - - - - -WITH-PROJECT.SHU I CASE E-VI HARZA-EBASCO SUS I Tt.IA JO INT VENTIJ£J.JI£86 FLOW I DURATION CURVES BASED ON .MONTHLY DISCHARGE SUSITNA RIVER AT SUSITNA STATION FIGURE E.2.4.60 (Page 3 of 3) 10846 WATER TEMPERATURE (Oc) 2 v-~ ~12/12/80 9/29/80 :/131/80 '\ /,,I413~ I\.100.._~r--\ 60 80o 20 o -UI 0::: ~ :E -40 ~ LIJ Q WATER TEMPERATURE PROFILES BRADLEY LAKE,ALASKA "SOURCE:CORPS OF ENGINEERS 1982 FIG URE E.2.4.61 tl ) } ) .j ·, 1I, 60 1., i I,cl!J~1...1 <~~f::J --'"1 50 i)f::J -~----~v f::J/1:.Y..v:--~f::J1!I ~~. I I"'"' J (/),!I 1...1 /0:::<f::J "LJJ <f::J ./ I t-40 f::J /LJJ v ~f::J .,./......-~~ ~~I f::J/ 0 ~~/I u./ l-t/I- 0 30co {I UJ /r:!J ><I l 0 ir!Jco« I-20 J:f::J 0....... IJ w u I [J 10 r:!J II J f::J 'I 0 v ..... ] 4 5 6 7 8 9 10 11 12 13 14 TEMPERATURE (CEl CI US) LEGEND:ALASKA POWER AUTHORITY ------ ~-.JUNt:.1l:S.1~l:S~-Mt:.AS 11'\'1:._ JUNE 18.1982 -PREDICTED EKLUTNA LAKE l!J JULY 14.1982 -MEASURED OBSERVED AND PREDICTED----JUL Y 14.1982 -PREDICTED TEMPERATURE PROFILES HARZA-EBASCO JOINT VENTURE c:KICAGO.ILLllIOlS po DEC n I FIGURE E.2.4.62 I ) I 1 I '), r 1 JII I .JI J- I I I ) I lI 1 I I\1 I t j [ ) 1 r i I I l '] 141312 EKLUTNA LAKE OBSERVED AND PREDICTED TEMPERATURE PROFILES HARZA-EBASCO JOINT VENTURE SUSITHA PROJECT I DJRESM MODEL ALASKA POWER AUTHORITY 10 11 (CEl CI US) /~ 789 TEMPERATURE 6 v ..... AUGUST 11.1982 -MEASURED AUGUST 11.1982 -PREDICTED SEPTEMBER 9.1982 -MEASURED SEPTEMBER 9.1982 -PREDICTED SEPTEMBER2J ..1982 ':".MEASUREDSEPtEM8E~·21.'1~82 -'PR£OICTED 5 70 ..,....--.,.----r-----r--r----r---....,....--.,.----r--_---. _,/'T 60 -+---+----+--t---e~--+----+---f!H--+l_-_I_-_f-~I ~ lb I _~ o 4 LEGEND: --,-- ,I!J t!». ---- W J: - II .~F m~f 10 -+--~1I___·~11---_H~--......-_P_--+__--+---......-_+_1..--.__l +.-..---..~J I·.--I~I-.~·-·--1----···········1-·--····-···+--·-···-··-···1··-·. j CKICAl:O.ILLlllOtI 1:10 Dtl:8:11 FIGURE E.2.4.631 II I III [I 70 1 " I i, C!l ~\ 60[C!l ~I• 1 I~~i ,- I I ..... """"'(f)•]c:::50 I!W I I-- C!l ~, J w I ~ Il .- 'I :L • !I 0 40 C!l ~.~! 1 ! I-- I-- i 01 Ii CD 1 I; W C!l ~30I>• II' 0 'I ,'J CD J « 1.1 I--C!l I1:c 1 (..,:)20 I II ....-.Iiw I :c .-~.....'" II i IIIi'10,I 1 ~ 11 C!l ~ J "~ ~~'i7 11 0 - III ..... 0 1 2 3 4 5 6 7 8 TEMPERATURE (CELC I US) 1,( LEGEND:ALASKA POWER AUTHORITY ------ ~OCTOBER 14.1982 -MEASURED :au:a I "IA r'UI"'t.IO I I u "t.lar "",UP:.\.--OCTOBER 1 4.1982 -PREDICTED EKLUTNA LAKE l!I NOVEMBER 4.1982 -MEASURED OBSERVED AND ,PREDICTEDNOVEMBER4.1982 -PREDICTED TEMPERATURE PROFILES HARZA-EBASCO JOINT VENTURE QllCACO.lLLlIIOlS 130 DEC n FIGURE E.2:.4.64 160 ~'"",~ 150 '- '\ \~~ .140 '"t 130 , 120 ~APRILI4 ?\'"h I 110 '\ \\\ 100 "\\ \~,APRIL 15 \\"\\ 90 \ -.'\~,\I-\\UJUJ ,'.L&.,.i 80 '\\I-a.\',UJ 0 .\ \"70 \~\......~.-1--~......__.- 60 ,"'\\\ 50 \" \\\APRIL 14\" 40 \\,,I \"~-1--··~•...-\_.J._- _'..___.__...__30___..., ----_.-_.,----..'--,\,-\\\ 20 \' \\\ 10 \\\ 0 \ II I ,/1 : ":,.\ ,..,,; \I ~ >il "., (I 'II ' I,.1 !,j' I ,I \j . i,' "SOURCE.BCHYDRO 1982 UNPUBLISHED DATA I 1 I FIGURE E.2.4.65 432 TEMPERATURE (0 C) o LEGEND: --SITE I FOREBAY --SITE 2 UPSTREAM OF FOREBAY -----SITE 3 FINDLAY FORKS(APPROXIMATELY 60 MILES UPSTREAM) LAKE WILLISTON TEMPERATURE PROFILES APRIL 14"'15~1982 I·NORMAL MAXIMUM OPERATING RESERVOIR lEVEL fl ?nnnn EL.1964.5 ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• EL.1926.51T..;.;...__ •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• fL.1888.5.f.:.:.T.__ MINIMUM RESERVOIR -OP.E.RAT.lNG,.LEME:L ,,.EL.1850~O.F_T.____o2'5'Ft.("tY·P reAL} .....,U ....;;;I_.:....__ --:iij/=,rm,\("IlI!<'!t./'!TliK~D....;;:----@j···············iJ~II'0·,.'.·•••'" WATANA MULTILEVEL INTAKE STAGE I &II FIGURE E.2.4.66 ! i !- I II --I::£i-IIII W IIUI 0 I i20I I I I i ! 15 I U I I-!.: W Ia:I::::>i Il- I'I<ta:V ,.•J.,:1 I.1\w 10 I Q.;_V_V-\.....IM-V~"'-.ll'I:.,~,.,N~""..1\//}~,,-...,::I J..~"~/V'-I,\\/\II',\/:£1\A W :'.....,I .,"I "1'·-,~~\'1 .•:-':J...~l-I I ''-.- :'aft':/I --....~-.-5:........LYI .I I\.~·~.0 .A ~.I -~.....'r'"1i N I '\..J ''\::.-~u.; 5 ','Co I !it .... l-.II'I \>"t--\.::::>, 0 I ...,~\_~ i I i :I ! I!I I 0 ," I II 21 I II 2 I 31 10 20 30 9 19 29 9 19 29 8 18 28I JUNE JUl:V I AUGUST SEPTEMBER OCTOBER NOVEMBER LEGEND.1982 I MEASURED OUTFLOW TEMPERATURE EKLUTNA LA'KE MODEL CALIBRATION PREDICTED OUTFLOW TEMPERATURe:!I i FIGURE E.2.4.67 ',<, -~......------.!,,Jii r I I I I I I I i I I Iii Ii.iii i i • + o UJ J""'-""h"-'1 1 U _I I'1 1 r--v --~--t-·-·,-\1 JJ 1 f 0 :E w U l.m,'·----~­ ,..",~ Cl ••••11f'--------------...-"-----------. 20.Iii Iii i ,,I Iii B iii i i. :Q 15 I I II I I Iw I I I~I ;::>I 1~I I<l I I~1 I~10 I I i I I :E I I Iw I I~I I I I I I I I I I I I I 5 H I I I I I I I I I I I I I .~v'-'t-,'qv H !/\l".."/11\1 ~, /1 ',- 3=o ....l ~.... ::>o -.},.J",-.L-_.,..4V:':.-~-l\-c:..,- v .-Ai-' ~ --_....-.4-__-_-.h...__.•___--r-----r ---_....-- 301020 MAY 30 1983 31 10 20 APRIL II 21 MARCH 9 19 FEBRUARY 10 20 JANUARY 31II21 DECEMBER 1982 .I ~-I I I I II I I II I I JJo+=+--r I.JI I 30 LEGEND, ~a l!l of. MEASURED OUTFLOW TEMPERATURE EKLUTNA LAKE MODEL CALIBRATION PREDICTED OUTFLOW TEMPERATURE . MEASURED ICE THICKNESS.STATION 5 MEASURED ICE THICKNESS.STATION 9 MEASURED.I CE THICKNESS.STATION II MEASURED ICE THICKNESS.STATION 13 .FIGURE E.2.4.68 I i i : 2liiO I I 1 I 1 I 20CI 1 I-I~, 1 I,I '1J....I a 0LIJliPJ:az:I ~Z,1&0 I :II:1 --1 2 ~II P1 0 <....I ;--.-I 1113 C D ~"'r\1 :,I ------.......Pl,-,'--1 _..~:-==:.;::tj ,..Z l&J b.s -f>-hi I .:,,,,,,.~.~IOO I' , \1 I • _:t ..UJ t-'!~~.... ~1\ ..-r;" --- 1 ; 50 1 I 1 I I I I I 0 i I 0 I 5 10 15 TEHPERAT4RE-(CEL51U51 FLRSKA POWER AUTt-m J TV CASE •••WA810tO -WATRNA OPERRTION RLONE [N STAGE!1ilB10IA I'fIO.ECl'I IJ'/IIUiM tlIIliIl. 1 WRTANR RESERVOIRLEGEtI[)& PREO ICTED Te:tiPERATURE PROF)LES :TEMPERATURE PROFILES 1 MRY 1961 I I STAGE I_._-----1 ..JUI\E 1981 .t-MZA-EBA5CO .JlINf VEtm~E1..JULY 1981 i-----I I i C1OI'-.ILLI"11I I FIGURE E.2.4.69 ., ~--- j!(1:.----.,....-..~ -~'-"---- ---------.~-~-'----'~_.------~_.---._-----'----- '-~-'--- 250 , 200 -~"1J..........,0 0LJJx:c~I ,J II x:0 -;1&0 .~z I ..~12 es I P1r.----_... 0 ./<....I.,...--'"113 C D ~-ffi r ......,~..----<--11 4 ....ITI -'':'~.LJJ -ionS ~>,/..;;..-:.....""'~.~IOO ...- ;f/(J)...., G -.....wr 60 0 0 5 10 15 TEHPERATURE-(CELSIUSI ALASKA PO~ER RUTHCRITY CASE •••~BtOlQ -W~TANA OPERRTION RLONE IN STAGE I flUillNA I'RlUCT I Drfl£Stt tUlO. LEDENJ I ~ATRNR RESERVOIR PREDICTED TEMPERATURE PROFILES:TEMPERRTURE PROFILES 1 AUGUST 1981 STAGE I._....-..._-1 SEPTEMBER 1981 ~ZA-EBRSOl JQINT VENTlfi£--_...-l OCTOBER 1981 <"IC_·ILLI'I1I"I FIGURE E.2.4.70 " 260 200 -~Wt- UJ:r ~.I i ! "160 I [ :r .....~ i 0 -~I [ I-""~. "'0 t- I a @ .~I _.lilt J:0 ,I '.i ~~ w , 112 a I 11'1 >·1 i ! - ~IOO .3 C < - !i ----! -- ...HI fl , t- i\ , m4 <lIB ~P1 5 ...- , 1...6 Z ...>.- III'~ w ,"'" ~ :I:i -l~ I UI I , 60 I I 1 ~...j. 1 I I ~---!-- I 1 1 1 1-- 15 WATRNA RESERVOIR TEMPERRTURE PROFILES STAGE I .mZA-EBRSCO JOINT VENl\.flE lKIIl hill Flt)JEtl 1 QnlDitt IIIlO. fLASKA POWER AUTHml TV C"'C_......C.clI.'FIGURE 1;.2..4.71 to LEGEfI(). o~I I , I I I "I ,I 'I , ,I i!6 I !TEHPERATURE-lCELSJUSI ICASE.1111 WRBIOtO -WRr~~A OPERRTlON RL(J\lE 'IN STAGE I i . PREDICTED TEMPERATURE PROFILES: 1 NOVEMBER 1'1 Sel--.---_.\DECEMBER 198\ - - - - - l ..J~r-uRRY 1982!. '_________._'----.J' •....~..-..-.~--.._.~-'---"------..----------------------- ----'---"-------~---- 260 2QO -~-0I-0 nUJ:r ".III J:a '1160 Sf z :r 1 2 is I ';0 "-III'c:::DI-r--.3 H\r't-~-frl -,-<---i11114....P1 UJ ---~""'I£;~>"""~.~100 \--111m I-"---- r ---0 l.... LU \r - 60 0 0 5 10 15 TEMPERATURE-l CELSJ US I A-ASKA POWER AUTHffiITY CASE •••WR81010 -WRTANA OPERRTION RLONE IN STAGE I 6tSI rnA llAO..Eet I DYIlDiIt IOlO. LEGEfIIJ I WATRNA RESERVOIR PREOICTED TEMPERATURE PROFILES:TEMPERATURE PROfILES l FEBRUARY 1982 STAGE I._--_.....1 MRRCH 1982 HARZA-EBASCO JOINT VENTURE-----1 APRIL 1982 CMICIQI.'ul....'.1 FIGURE E.2.4.72 -, , 2&0 i ! !Ii I i I -Ii 200 ~'.; " I -,I!~.', -0....e (")l.lJ II II ~0:l!:~I ..ltiC .'~::u 7- !.1FI1fT"I:E:_1..----e <0 I 1-_-i--.-13 C D.... @ ,.----m II, \!..-<,/-......fTI '--!.... .'Z l.lJ ..~----------5 -I>!~.~100 , 1'\III U1....!"'---I-----a --f--..-.....!.-l.lJ ---::t:I ~--!i 60 I i i --'I,--!, I I 0 !I . I l)i i 5 10 15 TEHPERArURE-CCELSIUSI i ,I i I I I ALASKA PO~ER AUTHORITY i CASE~.~,W~BtOtO -WATfN~OPERATlON ALONE l~STAGE I SUi I rlfA FflO.£Cf I·IJfAtSIt I1lIln. W~TR~RESERVOIRLEGEt-.O ,I i iPREDICTEDTE~PERRTURE PROFILES,TEMPER~TURE PROFILES 1 MAY 1982 I STAGE I .....-_.._--1 JUf\E 1982 I HI:lRZA..,[BASCO Jl\NT VEtn~E-----1 .JULY 1982 I ,0"'0_.....,...,..I FIGURE E.2.4.73 ! ~.~ \_-~- -_._.-_.- ,-----~.._-+--,.-------~----+----...__...- 260 200 - H?w I "11l-e 0w, :t:"-,I r .1I1'.J:0 •.;150 -~Z I -~--12 f5 I P1z: 0 ~<...,/---113 C D t- -_/--:1'ffl r@<-.4...P1 W ,"-~--:-:.--~Z -6 -i:>-~.~IOO I'll UI....--I-- ~..--w:r 50 - ----~._--- 0 0 5 10 15 TEHPERAT~E--(CELSIUSI RASKA POWER RUTHmI TV CASE •••WA81010 -WATANA OPERATION RLONE [N STAGE I liIJItrNA I'tllU:CT I IMt£Stt IGlQ. LEGEt-D.WATR~RESERVOIR PRED ICTEO TEMPERATLRE PROF I LES :TEMPERRTURE PROFILES 1 AU()JST 1982 STAGE I ..-------1 SEPTEHEER 1982 HRRZA-EBASCO JlINT ~l~E-----1 OCTOBER 1982 CMlt_.I ..Ll"".1 FIGURE E.2.4.74 -liO,....---.,.---r-4-~1-,...---r---If---T---j"'--'---T--'"'JC==:I==-r a.ID t=i Z4I8,a.o M....i ~36i',I I z~I !I 0.6 i ellZ i I 0.0 ..., -0' .!:~~-4-­~l LEVELZ.~r l.EVEL,3 u ~--I !.~·1 -1 ..II~IIIJ II 'h ..II!___ I! , , ! -,-, iI;:-n I- •i j I t *T t l t' .' o HmZR-EBASCO JOINT VENl~E unMA AlOJECf I DfIl£Ji"IGJO. ALASKA POWER RUTHORITY STAGE I WATANA RESERVOIR .OUTFLOW TEI1PER~TURE . AND ICE GROWTH(E-VJ) <11\<_.......·111.I FIGURE-t:-:2.4~75 I I I ..~.., m-<L--••1 - I ·".n J, AUG I ·GEP OCT POI OCC ....I FEe I MRR 1981 1982 1 i : ..lIN .u. i Q..---T "•:D %:\,~I ~~I'~S; ~! .J ~ :::J o I .....---t- o~,.....I t,I I 'j I ·j It,t j I I LiClENo.CAsE •••WA81010 -I W1TANA oPERATION --.;-,--.PR£OICTI.O lJUTFLCJ.l ~I1PERA~ • ---!-••ItoFL.OWTEHPERRTLfEI I • NDTEa.I,INTQI(E ~T LEva I AT EL.196<'FT.ISSQ.8 111 .2.INTQK£P~tLivEL2ATEL.1926 FT.158'7.2111a,lNTQK£PORt LEVEL a AT EL.1999 FT.1576.6111- ..INlCll<E P~t Liva ~AT EL.I9liO FT .•l1i6 •.0 111 ,INTQI(E PORT LEVEL Ii AT EL.1912 FT.16&2.4 11. Ii CONi V~vE RT E~EVATIO~1929 FT l;aa 0 ~l 71OPILLWOV CREGT ?TEL..iVClr.rON 21~Q FT 1S&"~'7 toll i ! .......-.-...;\...---.-- 6'0 I.Ii!~~-n ~36 -1.0 tTl I ZA ~I -0.6 -~IZ 3 ~ - 0 0.0 LE~EL I I •.--~l-!~!~.·l ~lIlIIIll'II II D II DB 1_L[V[l 3 IIIIIIIIIB lDlIIlIIIlIlIlI !LEV£!......liI •II II .11111.II LEVa 5 iiiiiiiiiI •..-..1I_1IIlI_ilDE 1£l~~~V!.--9'h...~y Ib IS -0 u ,8 c ~,~ '1 I ,.I~rI~i\..!A1 •tJi -w , ~IO •\I,."{!J\IIUJ II.\fJ\10 ~....-H".:I I \''\J 1'1 cr ,:J::,"--~a "~..11 \,1/\w .'I,jn.',i:A/,I \D1:•,......w ',1 .,.\... 5 ~....Ii I ...I \.~•II'I J ,".~•Vi I U.1--0-""".1 1 ~I-,,0:J ,"~0 ,•, 0 0 HAY ..u..AJL ~liEP OCT NOV OCC .JAN J:EB HM QPR 1982 1963 LECi£"l).CAGE.R.WABIOIO -WRTRNR IJP£R'lTION .FLASKA POWER AUTHORITY PREDICTED WTFLOW TEJoPEMTURE -------IIIFLOW TEtRRATLAi:Sl.6H~RllU.CT I lJY'lCiIt tOlIl. NOTES.I.INT'lKti PORT LEva 1 AT El...IlilG4 I=T.Ili99.liI HI STAGE I WATANA RESERVOIR 2.I NT'V<Ii PORT LEva 2 AT El...192G J:T.1&87.2 HI OUTFLOW TEMPERATURE3.INr~PORT LEVEL a AT EL.1999 F1.\&15.6 111 ~D ICE GR().HHCE-VDA.INTAKE PORT LILVIil.4 AT iL.lebO FT.I&GA.a 111 Ii.I NT'V<Ii PORT LILVIil.,AT EL.lI..n2 FT.1Ii1>2 .4 111 HARlA-EBA5CO JOINT VENTUREG.CONi.VQLVE AT IiL&:VAT ION I~F1 1&89.0"1 7.IiPILLWAY CREGT 'IT !i:L&:VATlON 21.48 FT 1&&4.7 MI "",e..,.,.,u,'HD'8 I FIGURE E.2.4.76 ., -' AlASI(A POWER AUTI!ORITY .·~~~~~{!~!t!~~~!~!!~i~~~~'_.- SIMULA TED NATURAL TEMPERATURES SIMULA TED TEMPERA TUREl PHASE 1 OF TWO STAGE PROJECT (FOR COMPARISC SIMULATED TEMPERA TURE~ STAGE 1 OF PROPOSED PROJECT SIMULATED SUSITHA RIVER TEMPERATURES RI,VER NILE 150 ='=~F'S_TAGE~ FIGURE E.2.4.771-·--'-E 1982 i OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP "~\ I • , ,.\:, ," I '\I ,i ,I\\~,I I ~\I':/.It.' \'1"I '""1'1\ \/"v \./,".J \,I •...'I •I, \I ...i I \'I.I''i ',/I I.,,"I,..."'.I,I"A I'", "I ,',,', "",,'",I '.'., , I, It "1 ~A 'I' II \~'\(~I \\,\" "if... MAY ~ON JUL AUG 1981 , , ,"", , , , , , , , , , •NOT E S:I , ,I 1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIODMA Y 1981-SEPT. 1982 INFLOW TEMPERATURE MA TCHING POLICY FOR MULTI-LEVEL INTAKE 3.STAGE 1 OF 3 STAGE PROJECT 4.AVERAGE WEEKLY VALUES E~VI FLOW REQUIREMENTS TEMPERATURES SIMULATED BY SNTEMP FOR PERIOD DECEMBER-MARCH SHOULD BE USED WITH CAUTION AS AN ICE COVER MAY EXIST ON RIVER AND SNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER (SEE RIVER ICE SIMULATIONS) LEGEND 2 4 o 6 8 12 10 I '~--~:--'~.~' NOTES: 1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 INFLOW TEMPERATURE MATCHING POLICY FOR MUL TI-LEVEL INTAKE 3.STAGE 1 OF 3 STAGE PROJECT 4.AVERAGE WEEKLY VALUES 5.E-VI FLOW REQUIREMENTS '6.TEMPERATURES SIMULATED BY SNTEMP FOR PERIOD NOVEMBER-APRIL SHOULD BE USED WITH CAUTION AS AN ICE COVER MAY EXIST ON RIVER AND SNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER (SEE RIVER ICE SIMULA nONS) LEGEND SIMULATED NATURAL TEMPERATURES SIMULATED TEMPERATURES PHASE 1 OF TWO STAGE PROJECT (FOR COMPARISOI SIMUL ATED TEMPERATURES STAGE I OF PROPOSED PROJECT '\"~\,, '.\,, \\ "~\ "'\''\/"/''\,\,v , "I '~~"\-...".'\ I, I, I, t, Jt,1 " C D E G R E E S MAY JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1981 1982 FIGURE E.2.4.7B ALASKA POWER AUTHORITY SlOTH"UTlJOOf UClRJC rnoJECI SIMULA TED SUSITHA RIVER TEMPERATURES RIVER MILE 130 STAGE I ~.:..~I ---'1-I'- ALASKA POWER AUTHORITY=---iiiiiH~!Ti.tCii·i"Cijl~-"no..c,I SIMULATED NATURAL TEMPERATURES SIMULATED TEMPERATURE PHASE 1 OF TWO STAGE PROJECT (FOR COMPARIS SIMULATED TEMPERATURE STAGE 1 OF PROPOSED PROJECT LEGEND NOTES: 1.CLIMATOLOGICAL AND· HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 INFLOW TEMPERA TURE MA TCHING POLICY FOR MUL TI-LEVEL INTAKE STAGE 1 OF 3 STAGE PROJECT AVERAGE WEEKLY VALUES E-VI FLOW REQUIREMENTS TEMPERATURES .SIMULATED BY SNTEMP FOR PERIOD NOVEMBER -APRIL SHOULD BE USED WITH CAUTION AS AN ICE COVERMA Y EXIST ON RIVER AND SNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER (SEE RIVER ICE SIMULATIONS) SIMULATED SUSITNA RIVER TEMPERATURES RIVER MILE 100 STAGE I FIGURE E.2.4.791~j~~,~~~-I1982 A 11 N J ':'\'~11 J 8....,I ~\I ' J ~:.A, /\I 1~\ ~Ii...1; L ..J I I I I 1_I I •I ,I I MA Y ~UN JUL AUG S!E~OCT NOV PEC ~AN FEB MAR APR MAY JUN JUL AUG SEP 19811 ', 4 2 o 6 8 10 12 c D E G R E E S ---''-;-~--,~'~'-~'-----.-; WEATHER CONDITIONS: 1982 AVERAGE FLOW -.-.-1981 HIGH FLOW -,------1974 LOW FLOW -..._..-.-1971 AVERAGE FLOW -o u-W 0:: :::> I-< 0:: Wa.. ~w I- ~< W 0:: I-en 30 .. I. /.. /, I MAY 35 JUNE JULY 40 45 WATER WEEK NOTE r SIMUlATIONS WERE MADE FOR NATURAL CONDITIONS AND ARE PRESENTED TO ILLUSTRATE TEMPERATURE DIFFERENCES FOR weT.DRY AND AVERAGE FLOW CONDITIONS AT RIVER MilE 130 50 1 5 SUSITNA RIVER TEMPERATURES AT RIVER MILE 130 NATURAL CONDITIONS .FIGURE E.2.~4.80 ~ NOTE -SIMULATIONS WERE MADE FOR FIRST STAGE OF TWO STAGE PROJECT FOR STAGE I ENERGY DEMANDS AND ARE PRESENTED TO ILLUSTRATE TEMPERATURE DIFFERENCES FO~. WET.DRY AND AVERAGE FLOW CONDITIONS Wt;ATHER CONDITIONS: --+---1982 AVERAGE FLOW -:._'-.-1981 HIGH FLOW -:...L--1974 LOW FLOW -;--t-_··-1971 AVERAGE FLOW I :" i: /•/. .I //"r j.........//// I : .//.: ./tt./..-"."~/,.../..~,". ./ 2 7 12 9 10 11 wa: :::) ~6 a:w Q.. ::i!:5 w.... ::E 4 <C Wa:t>3 _ 8 oe. 30 MAY I JUNE iii i i 35 OCT I I II 52 1 5 SUSITNA RIVER TEMPERATURE AT RIVER MilE 130 WAT ANA OPERATING FIGURE E.2.4.81 ---~--------... I I L_==__i C:~~Ii__====_I='-=----===-:==c:-.__--=-=-~:::==:,-~_~-=~-,--- NOTE SIMULATIONS WERE MADE FOR NATURAL CONDITIONS AND ARE PRESENTED TO , ILLUSTRATE TEMPERATURE DIFFERENCES FOR WET.DRY AND AVERAGE FLOW CONDITIONS IN RIVER DOWNSTREAM OF TALKEETNA, '\\ OC~T 5 SUSITNA RIVER TEMPERATURES AT RIVER MILE 84 NATURAL CONDITIONS FIGURE E.2.4.82 50 AUG 45 WATER WEEK JULY 40 JUNE WEATHER CONDITIONS: 1982 AVERAGE FLOW _.-.-1981 HIGH FLOW -,-----.-1974 LOW FLOW -'-_0,-1971 AVERAGE FLOW 35 MAYoIII I I I I I I--,.i i J •iii I I ,iii Q i iii •»Ii , • 30 12 11 10 9 -80 ~ w 7 a: ::) t- oe(6 a:w 0- ::E 5w t- ::E 4 oe( I I: Wa:3 t-en 2 J , : NOTE SIMULATIONS WERE MADE FOR FIRST STAGE OF TWO STAGE PROJECT FOR STAGE I ENERGY DEMANDS. AND ARE PRESENTED TO ILLUSTRATE TEMPERATURE DIFFERENCES FOR WET.DRY AND AVERAGE FLOW CONDITIONS DOWNSTREAM OF TALKEETNA "./\ 5 SUSITNA RIVER TEMPERATURES AT RIVE.R MILE84WATANA OPERATING FIGURE E.2.4.83 50 ,i JyLy I AUG I ,I 40 I i 45 I I jWfTER WEEK I I WEATHER CONDITIONS: I , ----19p21 AVERAGE FLO"" -.-.'-19~11 HIGH FLOW --.---1974i LOW FLOW I ! -"_00-19~1i AVERAGE FLOVV 35 MAY 12 11 10 9 -8() ~ w 7 a:::» ~«6 a:w D.::5w.... ~4 <wa:3....en I : 2 ------'--~'<,--/'------'~~-........-..... ,"'-~,L--.J ----!C~ It\l/\\~:~ ..J \"/'\ \~\\'\~,~\ \~\\\~.. '~~ '\\ ~..'\ ~\\, ~ NOTE: PURPOSE OF SIMULATIONS IS TO ILLUSTRATE TEMPERATURE DIFFERENCES OF VARIOUS POLICIES OF OPERATING MULTI-LEVEL INTAKE.THE COMPARISONS OF THE VARIOUS POLICIES ARE NOT DEPENDENT ON FLOW REGIME AND THUS ARE VALID EVEN THOUGH CARRIED OUT WITH CASE C PRIOR TO THE APPLICANTB SELECTION OF CASE E-VI AS ITS PREFERRED ALTERNATIVE.', NATURAL CASE C "INFLOW TEMP.MATCHING" CASE C WARMEST WATER MULTI-LEVEL INTAKE CASE C LOWEST LEVEL MULTI-LEVEL INTAKE CASE C WARMEST WATER EL.1800 &MULTI-LEVEL INTAKE--'.'- 4· 2 o I I I I I I I I I i I I i I I I iii iii ii',):J 3 5 9 6 2 8 o 7 3 ,i 1 1 2 9 16 23 30 6 13 20 27 4 11 18 25 1 8 15 22 29 5 12 1926 4 11 18 25 MAY JUNE JULY 1981 AUGUST SEPT.OCT. SIMULATED TEMPERATURES AT RIVER MILE 130 VARIOUS INTAKE OPERATING POLICIES FIGURE E.2.4.84 '--- FIt:!I1~~E.2,A A" t~\\~\ .-'-\,\!\..~,,.... \ \ \ \ \ "\ \, \ \ \ \ \ \ \'-'" 2 3 //~ll'~/Ji NOTE, pIj i ~URPOSE OF SIMULA nONS IS TO ILLUSTRATEr!"/"I TiEMPERATURE DIFF~RENCES OF VARIOUS POLICIES- I ~OF OPERATING MULITl-LEVEL INTAKE.THEJ~f Ii qOMPARISONS OF tHE VARIOUS POLICIES ARE NOT •II DEPENDENT ON FLOW REGIME AND THUS ARE VALID ",,"-;.:::.:P/I ~VEN THOUGH CAA~IED OUT WITH ,CASE C PRIOR TO"'~/!II TI,HE APPLICANTS S~.LECTION OF C~SE E-VI AS ITS0/;AREFERRED AL TERNATIVE.. I iJ!Ii: NATURAL Ii, --'--CASE C INIF~OW TEMPERATWRE MATCHING - - -CASE C ~A~MEST WATER ~ULTI-lEVEl INTAKE -_.- 'CASE C lP'1'EST lEVEL MUrl TI-LEVEl INTAI<E -"'-CASE C WARMEST WATER El.1800 &MULTI-lEVEL INTAKEII' I I • 0'"I I II I II il I I I I'I I I I I I I I I I I ,I I I 29 1S2330 6 132027 4 1118251 8 152229 51219264 111825jI MA Y JWNE JULY AUGUST SEPT.OCT. I :1982 !I SIMULATED TEMPERATURES AT RIVER MilE 130 ~A c:.J UCJI T-=--=-:E ~E c.:.-r I t~PU:CI =-=- 6 5 9 8 1 7 10 12 1 1 -'-----' FIGURE E.2.4.B6 "~, ~\ ~~'NOTE: /PURPOSE OF SIMULATIONS IS TO ILLUSTRATE ,TEMPERATURE DIFFERENCES OF VARIOUS POLICIES --- tJ OF OPERATING MULTI-LEVEL INTAKE.THE ~COMPARISONS OF THE VARIOUS POLICIES ARE NOT DEPENDENT ON FLOW REGIME AND THUS ARE VALID?EVEN THOUGH CARRIED OUT WITH CASE C PRIOR TO ;THE APPLICANTS,SELECTION OF CASE E-VI AS iTS .--::::-.....If PREFERRED Al TERNA TlVE. ?-;;::...--:::.:::J .NATURAL., CASE C WARMEST WATER EXISTING INTAKE CASE C WARMEST WATER EL.1800 &MULTI-LEVEL INTAKES CASE C WARMEST WATER EL.1636 &MULTI-LEVEL INTAKES (COINCIDENT WITH ---- CASE C INFLOW TEMPERATURE MATCHING 2 2 4 5 3 9 3 I I 8 6 7 0-1 I I I I I I I I I I I I I I I I I I I I I I I 'I I I 2 9 16 2330 6 13 20 27 4 11 18 25 1 8 15 22 29 5 12 19 26 4 11 18 25 MAY JUNE JULY 1971 AUGUST SEPT.OCT. SIMULATED TEMPERATURES AT RIVER MILE 130 VARIOUS INTAKE OPERATIN~POLICIES o 1 1 NOTES: 12 J 1\L1.CLIMATOLOGICAL AND HYDROLOGICAL OAT A PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE 10 J ,/1 ',I I I 'V''\·t I-MATCHING POLICY FOR.,I '..Y 'J MUL TI-lEVEl INTAKE 3.STAGE 1 OF 3 STAGE PROJECT D I I J I''"II ,\I ,I ,.I 4.AVERAGE WEEKLY VALUES E 8 G V '.'5.TEMPERATURES SIMULATED R BY SNTEMP FOR PERIOD DECEMBER -MARCH SHOULD E BE USED WITH CAUTION AS E 6 AN ICE COVER MAY EXIST ON RIVER AND SNTEMP S "DOES NOT SIMULATE TEMPERATURES UNDER AN ~J ~V.I .ICE COVER C I ~LEGEND4"!\~ --SIMULATED NATURAL TEMPERATURES -----SIMULATED 2 J il ~.TEMPERA TURES E-VI FLOW REQUIREMENTS\'PROPOSED PROJECT.r ;---SIMULATED TEMPERATURES E-I FLOW REQUIREMENTS 0 I \"\'\..,\.1)A.(FOR COMPARISON) MA Y JUN JUL AUG SEfP ;OCT NOV DEC J4N FEB MAR APR MAY JUN JUL AUG SEP 1981 1982 FIGURE E.2.4.87 ALASKA POWER AUTHORITY SUSRHA frTonoEuefRIC PAO~C' SIMULATED SUSITNA RIVER TEMPERATURES RIVE:T:J~~16D ~.:..~I_. ---"·-~T-,-- ---'-'--',~ 6.TEMPERATURES SIMULATED BY SNTEMP FOR PERIOD NOVEMBER-APRIL SHOULD BE USED WITH CAUTION AS AN ICE COVER MAY EXIST ON RIVER AND SNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER LEGEND --SIMULATED NATURAL TEMPERATURES -----SIMULATED TEMPERA TURES E-VI FLOW REQUIREMENTS PROPOSED PROJECT ---SIMULATED TEMPERATURES E-I FLOW REQUIREMENTS (FOR COMPARISON) NOTES: .1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MULTI-LEVEL INTAKE 3.STAGE 1 OF 3 STAGE PROJECT 4.AVERAGE WEEKLY VALUES ,\ \.1\il ,I \ 11 \ 11 t "VI "\\",\~ "~, "~,.. \ \ \,... '\ \ \. I I I I I I I I .if I I I I I I I /,C D E G R E E S MA Y JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1981 1982 FIGURE E.2.4.88 ALASKA POWER AUlllORlTY SUSIlNA tlYOOOEUCIRIC PROJEct --- SIMULATED SU81THA RIVER TEMPERATURES RIVER MILE 130 STAGE·I ~~I_. ---'1-I'- 5.TEMPERATURES SIMULATED BY SNTEMP FOR PERIOD NOVEMBER-APRIL SHOULD BE USED WITH CAUTION AS AN ICE COVER MA Y EXIST ON RIVER AND SNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER (SEE RIVER ICE SIMULATIONS) AlABKA POWER AUTHORITY SUSflHA HyonO[l(CIRtC PfIO.Eet SIMULATED SUSITHA RIVER TEMPERATURES RIVER MILE 100 STAGE I ~.:..~I. -.---1-I'- LEGEND --SIMULA TED NATURAL TEMPERATURES -----SIMULATED TEMPERATURES E-VI FLOW REQUIREMENTS PROPOSED PROJECT ---SIMULATED TEMPERATURES E-I FLOW REQUIREMENTS (FOR COMPARISON) NOTES: ,1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE' MA TCHING POLICY FOR' MULTI-LEVEL INTAKE 3.STAGE 1 OF 3 STAGE PROJECT AVERAGE WEEKLY VALUES ~ "\,, \~ ~ ! \..'t !,I "itli ~t:~ Yo\~ !\\ i \'!\' f ".~, ", I \ I \ I i I MA Y i JUN JUL AUG SlEW OCT NOV DEC JAN fEB MAR APR MAY JUN JUL AUG SEP 19811 I 1982 I I!FIGURE E.2.4.89 2 o 10 12 D 8E G R E 6E S C 4 N'.:~~ 150-,.-----------!i--...ij.~••:':'.':":••~••:':'.':":••:f--+---:;;.;;o;;.-;;';••;";;'••;;o;;.';"';------------, OOC ISOTHERM FOR : : STAGE I ~...:-i-i i.......v:;..:...........:..,...~--.:....• • • •.,-•'-=.....••••'-• . • • •D·r .....~.+.."•• : :::.•••,..:'6...'"Ill.·..."""....,:: •••::::.i"•••\ :~...:.""..,......·r-...~••+.\1 to.,• ••••II ."11 ·~~~·...........,.~ I ~.~I ~.~ I ~• 100 140 Zo ~_130 U W0: ...1:2 I-a:120 Zw 0>ex:- u.~110 wu 90 -+-----,...------r---...---,------..,.-----,...------t NOV DEC JAN FEB MAR APR /REFERENCE LINE' /3000 cfs OPEN WATER SURFACE PROFILE ~ I ....·I I ~. ~..\...... I .'~,II ~.",/I.."./'........... ""\./.~)\---__a--V "/•\~"-'\1/ .......I'""'"t''..... "I / f I T I w 14 t::J 12«I- (J)10ex:w_8>1--wa:w 6:2!:::.:::>4:2 X 2« :2 0 100 110 120 RIVER MILE 130 140 ~"..}I\., .....\~" ~""..",/*~I \I , "oj,·,,~If,,_100 .. -/I ,-1-------_.-_.'!-....1-.. "~ I I I 110 120 RIVER MILE 130 140 NOTES: 1.STAGE I SIMULATION BASED ON CASE E-VI FLOWS.STAGE I ENERGY DEMAND,INFLOW MATCHING TEMPERATUR"E POLICY. 2.NATURAL CONDITIONS NOT SIMULATED UPSTREAM OF RM 140. 3 3000 cfs REPRESENTS TYPICAL WINTER FLOW UNDER NATURAL CONDITIONS AT FREEZE UP. LEGEND: ._.- 111I NATURAL CONDITIONS STAGE I OPERATING NATURAL SLOUGH BERM ELEVATION (SEE TABLE E.2.4.23) OO£OOlllA CO (gOOIA®©®SUSITNA JOINT VENTURE ALASKA POWER AUTHORITY SIMULATED RIVE"R ICE CONDITIONS STAGE I vs.NATURAL 1981-82 WEATHER CONDITIONS .LO FIGURECASEE-VI F WS E.2.4.90 J ,.J .1 ,j } ,I ..J l' ] ] ] ] ] ] J j ] ] J APR 140 140 MAR 130 130 2/ FEB LEGEND: ---CASE E..,..1 FLOWS ..............GASEE...,.VI FLOWS. NATURAL SLOUGH BERM ELEVATION (SEE TABLE E.2.4.24) SIMULATED RIVER ICE CONDITIONS STAGE I '1981-82 WEATHER .CPN·DITIONS CASE·E-lvs.CASE E-VI FIGURE E.2.4.91 JAN, -120'. RIVER MILE 120 RIVER MILE DEC 110 REFERENCE LINE: NOV ............'""\.#~~,r~ ~"..~~L.I r\,,.,-i .lI"",,"...,....-',-,,...-..._._.._.-.-.. ~-.. I I I 100 4 r 3000 cfs OPEN WATER SURFACE PROFILE....; I ./~2 ~."\.0 J', B····.."./~-'.4 ~,..",. ~~I~.'~/~{-,~.6 """,".;:;;..-.-'\~I .."-14 •'-~ 2 i""'I "f I I I 1 1 UJo ~ I-en 0: UJ_>I--UJ 0:UJ :2!::.:::> :2 X ~ :2 NOTES: 1.SIMULATIONS BASED ON STAGE ,I ENERGY DEMAND INFLOW MATCHINGTEMPER-,,--.......•..-.,--~.,":'.--..--'..•'_...............•.._,...••.•...•...._--.. ATUR EPOLlCY.-. 2.3000 cfs REPRESENTS TYPICAL FLOW UNDER NATURAL CONDITIONS AT FREEZE UP. 90-+-----.-----..,.------,-------r-----,....-----'---t 100 150....,..--------------------------------. 140 Zo ~_130 u UJ O::! ...J:2 I-0:120 ZUJ 0>0:-u..e:.110 UJu OOIAOO~IACI·jglmlA$@@··SUSITNA JOINTVENTURE ALASKA POWER AUTHORITY 99.9 99 90 50 10 1.0 0.1 PERCENT (%)FINER BY VOLUME THAN INDICATED SIZE SA,MPLE DATE e 7/20/84 8 8/28/84 I-[~~~ 5 LI---t ~\~ ~.~~ 5 \\\ \\ \ \~~5 .')~ a . \ '\ 5 10 0.1 100 enz 0e:: (,)-~ Z W N II -en w 1.0 ..I I I (,) U -l-e:: -<a.. II EAST FORK EKLUTNA CREEK Bi 10/23/84 SUSPENDED SEDIMENT PARTICLE SIZE DISTRIBUTION SOURCE:R & M 1985 f FIGURE E.2.4.92 SOURCE:R&M 1985f GLACIER FORK EKLUTNA CREEK ,......·_····SlJSPENOED SEDIMENT pARTiCLE SiZEr DISTRIBUTioN FIGURE E.2.4.93 9 .9 99 90 sb 10 PERCENT (%)FINER BY VOLUME THAN INDICA TED SIZE 1.0 0.1 SAMPLE DATE o 7/20/84 EJ 8/28/84 A 10/23/84 J ] J J J .1 J :I .. -1 J 1 1 1 J ] ] 1 ] J fA- SOURCE:!R&M 19851' I I I FIGURE E.2.4.94 I I I I I I I I 10000 ----PARTICLES WITH SPECIFIC GRAVITY OF 2.6 ----PARTICLES WITH SPECIFIC GRAVITY OF 3.2 I I I I I II I I I I I I I I I I I 100 1000 FA L LIN G VEL 0 CIT Y X 1 0-7 m I 8 e c STOKES LAW fOR fALL VELOCITIES V ARIATIONS WITH RESPECT TO TEMPERATURE AND PARTICLE DENSITY I I 10 20°C ISoC 10°C -+=5°C ....... f 62- "0 )l» ::D 10-...9-8n7....6m8 (/)4-N m 3 2.5 a 2-0..1.80 :::I f8 1.0-.... 0.60_ ! n 0........ 0-a )l».... ....:""_- I I 200 200. 190 t';.IS) m leo I',-1110 ffiIr!,INFLOW (0-I0 microns)110~_170 ~r.J d lbO I !~I&O~ r.0··\so ,•HiO en "~,,ITI I lAO !ii I ,,I~~ •,.130~Z 130 -.--_._-1-'iIt ~0 •'1 •110 -.j::::l2tl r.;I \«~8 ~n ~IIIl •Ila~i " • 8 :, I • 8 Z '8 I I hi ,I!w 100 I I;I ••!f:IOO~0 8 I ...Z ,. 0 90 !I I"II I ~• g);:1) 0 II I • ,,,-:0. I-00 I .,I'i 80 ....azIIIII70Zw70."~.,~••, 0 60 60 IWI•Cf)•8 50 51).." 0 i 8'8 -xwII8.eo 00ADi·.:I,....Z :~,.,I!rw30•aD -Q.!•..,.,•Cf),I ,#.,-, :::>ZO I -~--.;;:re-,-.1.0Cf)It OU,TFLOW (0-I0 microns)•, I.'., 10 -..,].,,/::;"Ii b!..'11 -Q:I V -"~.~--10..... 0 •41 ______--_.V<:J 1<;7 .(',..0 NOV OCC ~'FEB I!IR ,.,.,1 ~IIlW JUN Jl1.'lJG 6£P OCt 1983 !!1984 I lLOE"'IJ.~~r~CRON gN6°3~1~~d~~,~ocg~H~W1~~~~~~K8..ml01 ALASKA PO~ER AUTHORITYPREDICTEDOUTFL~SUSPEl'IEO SEOI tENl CONCENTRAT I ~(MOIL 1..-...--..II'I':L(].l SU6Pf:I'-{)EO 5fg~~NT COt-«:fNfRAllON IMO/U GlIlI fllIt FACUCT I~OBSERVED OUTFLCU StlJ E!'IlEO SED I ME"IT CtN:EN1;RAlION (MGIL)T5G DrIllli"HIIlO.. NJTESI l.I~LDW SUSP.SEO.ltOPC.16 BRSED ~7/208128 10/23 (19&41 EKLUTt-FI L~E PARTICLE SIZE OIBTRlBUT1()-J5 .WTFLOW 10-\0 MIC~) 2.sse INFLOW Vr:uJESI REPRESEN1 THE 0-10 MICRON RAta AND f:H:SUSPENDED SEDIMENT51.8 %OF TOO EXCEPT DlJW..o 7120/&4-10/23/8.... ClLRIt-G nus PERIOD.sse PEACENTFlOES (OF T5S1 FAt:LINEMLY FIGURE I4lRZR-Eg:s(O ..JOINT VEN1~EINTERPll..RTEO BE1WEEN THE Fll.J.OWlt-.C V~UES. 56.6i1,~7/20/841 35.9Y.ON 8/2B/e.4 51~trI.CJ.I 10123/84 E.2.4.95 l ...~_.IUHlralll.u..-1 4l-QI~ , ~-- -~---~-~-~.-'.--,-~'----,-----'--'-.----.....,.------ 100 1 I I I I I I I I I I I I I 1 I I 1 I I I I 1 II I 1 I 1 I I I r I I I ~11 I /w 90~./(J) C 80W /t-« Q 70C V~ z«60 ~ :::I:Vt- o:50W /zu:: t-40 Z /w 0 0:30 W / Va. 20 ~ 10 0 II I I I I I I I I I I I I I I I I I I 1 I I I I II I I I I I I I I I I I I I I I I 0.0005 .001 0.005 .010 0.050 ·100 _0.50 1.0 PARTICLE SIZE (MM) SUSPENDED SEDIMENT SIZE DISTRIBUTION SUSITNA RIVER NEAR CANTWELL FIGURE E.2.4.96 - - - - - - I ! I, f- I- [ 00,...••....000 I I ,"I I 'I'I I I I : ./ ///- 50,000 !i _ ;! I-I I I I I - ~././ / / ~~// i //:// '.://:.//~~O / '// \', /~tII/ /~/ /o?/,~ // \'~tII/// of), (j,/",!/ac:'w 1,QOO _ ~,-~i _ ~: j - / / \'//~tII, f)f)/ ~/ / 100 I I I I "I I~~_.AA10 I I I IJ I'IL5001000 i J1 I 1'1'I III 5000 10.000 I I I I II I II 50.000 100.000 I !j I I I J II 500,000 l~/O.,!-,OO"""'/o=oo- U~PENDED SEDIMENT I>ISCHARGE TONS/DAY i t i i SUSPENDED SEDIMENT:RATING CURVE !I AT USGS GAGING STATIONSUSh~Ai RIVER NEAR CANTWEll,ALASKA FIGURE E.2.4.97 '--~"':/ -, ~--,.--_\~ liFtt W 3·.t-1 i-Eli f Ed 550 ~300 (') 1: '21iO ~200 ~ 160 Q. ~ 100 liO o ,, ..\ •.;,' It I·•I. I ","I , •'I .....,I "',.'"U-1"-,fn d I I ,,I .'Ul I III ,."'11 V\...\'-Un """"......,.•11.,"""".7 -"T 'V\...:J.L........... 1"-.•..I '1 I ~rV'w.."'",.I.',''',~'..-,--'\,../~..~IMI --'"....... ......•I'........I I "'-'\.......I .~.'".A I '-.I ..V •-.,-"''''-.----.--...,.. HOV D'i:C .....FEB I"lM QPq ~v ..AJN ..u.A.D G[P ott tOI 3l5O 3lIO 2IiO ~ "tl 200 ~ 150 8n 100 I .:I: C1 SO "-r o LEOEND.ALASKA ~ER RUlHDRIT¥ t-mlA-EBRSCO JOINT VENl!JR£ W~TANA RESERVOIR OUTFLOW (0-10) SUSPENDED SOLlDS, HIGH INFLOW YEAR.NOTES. PREDICTED OUTFLOW 6USP.5EO.CONCENTRATION (HG/LI HFL~Sl,S).SED.C~CENTRATlO'A (HO/U (0-3 MICRONS ONLY) I.SSC INFLOW VALUES REPRESENT THE 0-3 MICRON RANGE AND ARE 15% OF TSS tlU!IlOlQ I'I'IG.£CT 0_9'IlllIEl FIGURE 2.4.98 ,..ttIa..ru........·OIG-Oll I I I[ I II i I ,I u .l~= I l' -~ ! I I i I I.• J I 1 II • I I I I [I • -.l=IL I .._~__~_~_ ,~., ! I I---. I •,. ;~1.I 'I I I_...I I I , no 3 200~. 11. --t ~ liO L±=1/ Is:··I---J_-.± I • I..-:-- ,-I'.."..-f ....I .IJL I lUI I ':at ~ ....~tt=t ~:i,--I--;l-,~,:,~~~._-7- I I I I---r --1- C=Tt"l=~~:.::::~F I II ,... II I-........J II ~'/) I I \..I I -~I I I I i I ~.---1 \.C I!A J ~i I I'"'- o .I I I II i hi;;-...-i ...NOV 'Ott ~I FEll .HRR ~I "_.•___ I I I I LEC£NO. NOTES_ I I'f I iiI'I 'I PRED.CTEO OUTF,LOW SU5P.SED.CONCENTRATION IMG/LI 11NFLO~6U6P.6EO.CXM:ENTRATI~(11G/L1 (0-3 MICRONS ONLY),I [• ;i '! .i , I I I , I.sse INfLOW VALUES REPRESENT THE 0-3 "HeRON RANCE Atil ARE lSI.CF 155 I !FIGURE E.2.4.99 ! ALA5KA ~[R AUTHORITY WillNIl I'IIlUCTl DWllBt IlIXIiL HATANA RESERVOIR OUTFLOW (0-10) SUSPENDED SOLIDS, LOW INFLOW YEAR ~lA-£fRiCO .JJINT VEN1URE 011_.~-_l"--.•..QU~•• ~.~~-::::---f '~__=-----..~-.....---......--'--'~"---- ___00--.,I I -~------ .~--,'---'---.--~_-'O ~~ ~ Wi1ttl-iiiiif1B£4 II'SO lI!lIO \-J ...~~I'r,.' "I',, I.2lIQ.•,. I'.;.",••'.•I I :'.;"I.".,I I ,~I ,C~I&D .••,.I •.'.I nD .1J•u.l'••,, •.I ,"'\'."0-10 M ,•~ W •,.."--......~)• •A ..~••.-nII''''lI ""~'"••V .....V\- lID ~~IOO ~•"•IV \\\~FI ~IV "'- ~..1 .,u,;VI ......•.I-.... ...........I ",ILJ a-3M .....,I"""~,I'".I. I :'. "-".......1/'.'..\SI~8IJ '\'",, • • I "I '\.''..I Jl'V ...-.'.~ "-""",-,............--.......00--.--,.-. tOV Die .At FiB tIM APR MQV ........IUJ Ii1[P Ot' LEOENO.A..RSt<A POWER AUl~J TY PRfDJCTED OUTFLOW Sl5P.SED.CONCENTRATION UtGIU lIlA.rtlIl l'IlIO.A:et I IJIlliUI'IIblal-------)NFLOW SU6P.GED.C~CENtRATI~(HelL.(0-3 MICRONS)WA1W1 AESER\lOIROUTFLOW0-10 MICRONS) NOTES.SUSPENDED SOLIDS .. I.SSC INFLOW VALUES REPRESENT THE 0-3 MICRON RANGE AND ARE ....A VERAGE INFLOW YEAQ- 15%OFTSS HRR~UR6tO .JOtHI'VEKTlM. FIGURE E.2.4.IOO _·..._1"_·.II!-Gl~ .. ,. '. 850 800 NOV DEC 4 OCTSEPT 60 I I r I r» "ITI 2blllllio\III I 750 ITIr ITI <» -l 0 Z ~-:""..... l "\\\1 I 700 90 AUGJUlVJUNE I 4 3 1.2 4 67 4 IS\,\Mf1Lt:FREQUENCY,TYPo)..} FE,SJAN 20 50 60 10 40 .... E.... ::c t-o. W Q 30 Ii.I:.::<...I ISO-TURBIDUTY vs.TIME EKLUT"A Lp,.KE at STATION 9 .1982SOURCE:R 8 M 1982 f '------~-,'--,~ ___-,FIGURE E.2.4.10 I ~' 850 2460~ 60 BOO I \ I ~/\(/,/\\I I 40 ~ E.... ::r:... Q.~3°1 l /-~)I LJ 10 /.rrJr rrJ<» 20-1 I I I I I -I 0 Z ~--- 700 I I I ,I I 10 DECNOVOCTSEPTAUGJULYJUNEMAYFEBJA o ',,I I ,II i •MARCH i APRil:iii •iii i SOURCE:R a MI1982f ISO-TURBIDITY vs.TIME EKLUTNA LAKE at STATION 9 1983 FIGURE E.2.4.102 850 19 5 4 COVER (S MPLE FREQUENCY~TYP:ll22 o ',I .i !'"I 'I I !J!I J!\''',I'!I JAN i FEB i MARCH i APRil:i MAY-i -JUN1E i JULY·i AUG i SEPT OCT i NOV i DEC. .I . ---} ....800 , I\ \ 60-1 / ~150~ 3 I 40 10 I ~ 5 E fTI ..... <l> :r: -f ... - Q. I az w J Q 30 ~- w: \ C :.:: \.\II I I I ~100 c( I ..J r~ \ \2010ho~ 20-1 \,\1\,II I\I 10 :R8 M 1982f I 'ISO-TURBIDITY Ys.TIME EKLUTNA ~AKE at STATION 9 1984 .~ FIGURE E.2.4.103 .....-:::-- 800 /X A NOTES: T :O.l85(SC)0.998 ,2:0.92 T=TURBIDITY SC =SUSPENDED SEDIMENT CONCENTRATION 21-7'--/---+----t---+--+--+--+-_+_LEGEND: V IJ::._SUSITNA RIVER NEAR CANTWELL o -SUSITNA RIVER NEAR CHASE X.-SUSITNA RIVER AT GOLD CREEK I L.------I...---J--....L.-...I.--.L-~I_______I._I-.1...1_...1.....-.-1../1 ..I...__..J...~I 10 20 30 40 50 60 80 100 200 300 400 500 600 / 17 40t-----i;---t--t--+--+--+--+---..-!=ii1J::.:L-+7'~-+_-+__1_-+_-+__l1/ /~ 30t-----+----t---+-+--+-_t_-_+_--~~_t_--_+--1___I_-_I_-+___1/e .-20t-----+_---t--_+_-+-_/_--+--h~----+---!---1___+-+_-+___1 t ,v vV ~101------+----+---1---lt<IA;\"O~/-_+--+-----_l17'" IJ::./8 t-----+_---t---+~+-_/_-_t_-_+_----_t_--_+--I___I_-+_---+----li /V 61------+---+-V~-+-+--+--t---I------+----+---/--+--/-...:.---+--1/& 41------+/-+--+---+--t---+---1---+-----+---1---+-~~+_-+___l1 ;5 / 200 I 150 .•. 100 0 80 60 SUSPENDED SEDIMENT CONCENTRATION (mg /1) SUSPENDED TURBIDITY VS. SEDIMENT CONCENTRATION SUSITNA RIVER SOURCE:PERATROVICH.NOTTINGHAM AND DRAGE 1962 FIGURE E.2.4.104 10,000 ,I,' I , J ', • • •••••• 1000 • • • • e - 100 • • •,.~." 1'..•"".. • •••0.-..•jo ••••••".5.I.•••••..r...__a •••.,. ,lD,• •e-0 • • • • •••_. • •e...••• •••••..,.- •••••••• •••• •• ..JO •••••• " ••• '0,.... •.... , T :0.44 (SSC)0.858 Le.NTU/TSS =114.4 :o.~~" r 2 :0.83 ~~.,~ ~n :229 <:,0 10 .I 100 1000 - S'OS-PENDEO---SEOI MENiCONCENTR-ATION-----'''---''''-------~,-----", (mg /liter) .TURBIDITY VS SUSPENDED SEDIMENT, CONCENTRATION IN SEVERAL ALASKAN RIVERS Figure Empirical rekJtionship of naturally occurring turbidity versus suspended sediment concentration for rivers and streams in Alaska,sampled during May-October I 1976- 1983 (derived in this report from data provided by'USGS I 1984). \II SOURCE:LLOYD 1985. FIGURE E.2.4.105 + 1000800'· 600 400 200 '100 "...,.80 :J 60 I-40Z........ 20 >- I-10 H 8 Q 6 H 4mn::2:J I + I-1.8 .6 .4 .2 + + +++ + + TURB.:1.78 TSS 0.865 R2 :0.87 C\I.~CDCO'"...C\I ~CD coo...o C\I o 000 ~CDCOO...o o (II o 0 00o000 ~CD COO... SOURCE:R $M 1982 f TSS .(mg/1 ) TURBIDITY VS SUSPENDED SEDIMENT CONCENTRATION EAST FORK TRIBUTARY TO EKLUTNA LAKE,1984 FIGURE E.2.4.106 FIGURE E.2.4.I07 .... i .... .... TSS (mg/1) ....10 I ':I ill I I 1 I I I I I I I I I I I "I I I I I I I TURBIDITYI "IS SUSPEND~D SEDIMENT CONCENTRATION GLACIER ,FORK TRIBUTARY TO EKlUTNA LAKE,1984 1~~~_ + ++ 800 +'++ 700 + 6~0 ~ +++ 500 400 300' I ++/1+It r-.. + +:t :J + 200 1 + + r I .,... z....... Ir 1~~r + H 80 /' J=l 70H 6'0 ~+ m + 0.651 50 /+ TURB.=6.00 TSS Cl: + :J 40 + r R2 =0.80 3,0 -/20 I- RaM 19821 ----'- ----------~ ,--L 1000 t 3/1800 600 -400 200 "::Jr-100 Z 80 .......60 >-40 r-t + ++i:t .+"'"+~++7/'~/+NTU/TSS RATIO LOCALIZED AT ~2/1 H ++++r::l 20 Hm 1:~+++n::++ ::J ~/)[7+"++ TURB.=7.98 TSS O.4e~r- R2 =O.33 4 2..../,+ II II I I I I I II I II I ~I I I "II C'I "It CD co.,..C'I "It CD coo 0 0 000 0 0 000........C'II -"It CD co 0 0 0 000 "It CD coo..- TSS (mg/1) TURBIDITY VS SUSPENDED SEDIMENT CONCENTRATION EKLUTNA LAKE SOURCE:R f2 M 1982 f FIGURE E.2.4.I08 N (T)V'If)W r--w lSI 1/1 + NTU/TSS LOCALIZED AT =:2/1 RATIO lSI lSI lSI lSI lSI lSI lSI lSI N (T)V If)W r--w lSI + + + + TURB.=7.4.T880.367 2R '=0.25 ~ .... + ++ + + + + (T)v If)W r--w ....;.... 2 10 8 7 6 5 4 3 20 100 80 70 60 50 40 30 >- l- Ho H tIln:: ::J l- ""'::J li- Z '-" .... i TSS (mq/1 ) Ra M 1982f ! TURBIDITY!',IS SUSPEND,ED SEDIMENT CONCENTRATION EKLU~NIA LAKE PO\o/ERHOUSE TAILRACE,1984 Iii I i FIGURE E.2.4.109 ...JJfL ~-~.~ 10,000 RIVERS NTU/TSS~0.22 •• •• t#••.-••..,..... -• LAKES AND LENTIC SYSTEMS--", NTU/TSS :::l::::2.0 - ••• o.•••.".-• •••• ••• • •• 2 SUSITNA RIVER -ti SETTLING COLUMNS ••• TUSTUMENA LAKE ~ 10 >-!=g ttla:::::> I- -::::>.....z- 1 10 100 1000 SUSPENDED SEDIMENT CONCENTRATION 10,000 (mg/liter) EMPIRICAL RELATIONSHIP OF NATURALLY OCCURRING TURBIDITY VERSUS SUSPENDED SEDIMENT CONCENTRATION FOR RIVERS AND LAKES IN ALASKA ·(MODIFIED AFTER LLOYD 1985) FIGURE E.2.4.1I0 " •/i. [1 u lJ aM 1981-I""200'OEVIL CANYONREFERENCE:BASE MAPPHFRyORME~RACED AT 25'CONTOURSTOPOGRA, USBR,I960 COE,I978 WCC,1978 g Col.<D ii5w DEVIL CANYON BORROW SITE G BORROW SITE G LEGEND BORROW SITE LIMIT NOTES ---BORROW SITE LIES WITHIN PROPOSED DEVIL I.~~~~;N 'RESERVOIR UMITS. SED ON FIELD AND AIR PHOTO2.BORROW SITE LIMITS BA ROW MATERIAL.FINAL UMITS INTERPRETATION OF ~~DESIGN INVESTIGATIONS.SUBJECT TO RESULTS , VAL ADDED FROM SOURCE3.25 FOOT COENNT~~)I~:~~RROW SITE ONLY.MAP (R.EFER 4.PHOTO,TAKEN AUGUST.19BI. G 15 A POTE rtTIAL SOURCE OF ll.BORROW MASTI~~IAL AND CONCRETE AGGREGATE.FILTER 200 400 FEETO~~5iiiiii_iiiil!SCALE i= r FIGURE E.2.4.111 I j I I ] I 1 I ";] 1 ] 1 ] ~-_..__._._-_..-- ] j ] j j J O~~54_~~MILES SCAU L • bEGENO ---BORROW/QUARRY IIlTE U1A1T8 NOTES 1.WATANA BORROW SITE D IS THE PROPOSED SOURCE OF IMPERVIOUS MATERIAL (SEE FIGURE E-2-4.1.1-b-l) 2.PROPOSE D SOURCE OF AGGREGATE AND FILTER MATERIAL. 3.PROPOSED SOURCE OF ROCKFILL. 4.TOPOGRAPHY AND DETAILS SHOWN ON INDIVlqUAL FIGURES. \ ) ," ( I ,, 1i)Q(} 1400 .. ,~OO " ,uno .\,,/",,;."....,.. l....•'./,~l) ",0'••••••/.,#' I • •,~. •,.I "- l " '" /1,..., '" , III -...,"1700 " \ I.'.' '" DEVI L CANYON BORROW SITE MAP ... \ \ '".. r-----., REFERENCE:BASE YAP FROM R au,1981 -"'200' OEVIL CANYOII TOPOGRAPHY. COOROINATU IN FEET.ALASKA STATE PLA NE (ZON E 41 .. N 5 ,2:20.000 !l 3.2'6.000 N 3,2.3-2,000 IJ tJ l IJ I ! ul r 1 I I-li i I r1I ] FIGURE E.2.4.112 -~ I -_.---"-----------_._,.-~-~----- ] iJ l 1 j j ~jl ! ] ] j 1 1 I -j ] I I J LEGEND ---MATERIAL LIMITS NOTES ;! I.ENTIRE QUARRY SITE LIES OUTSIDE OF PROPOSED RESERVOIR LIMITS..- 2.'MATERIAL LIMIT SHOWN IS OUfCR6Pf;:--~ LIMIT AS DETERMINED FROM AIRPHcrrO ,INTERPRETATION.NORTH FACES OF __ -SITES ARE EXPOSED ROCK CLIFFS,AND LOCATION OF SAMPLES. 3.CONTOURS TRACED FROM ENLARGED, REFERENCE BASE MAP,AT 100 I INTERVALS. 4.QUARRY SITE K IS A POTENTIAL 50URCE OF'ROCKFILL. SCALE--'" ("'~~" r ..'"~ ...~ 0 0 0 0 0 00000000,~0 0 0 0 0-0 CD lD V C\I 0'"---CD lD lD lD lD CD IlJ IlJ IlJ IlJ IlJ IlJ N 3,216,000 N 3,214,000 N 3,218,000 N 3,212,000 lJ U U u i11~1II II -'I jiI I !I] I I i ! I I I[] REFERENCE:BASE MAP FROM USGS 1'63,360 ALASKA QUADRANGLE TALKEETNA MOUNTAINS (0-5), COORDINATES If\!FEET,ALASKA STATE PLANE (ZONE 4) DEVI L CANYON QUARRY SITE K I, /1 :} :] ) I 1 j I j --J 1 I 1 J 1 J ] j I 1 :t... ~ CIi u.i LJ)wCDa: ;:) <l' i:i: 0 1=1 CD w C' <C I-en LJ).. C"""Z 0-I- <C > 0 w C"""..J W W (,,) <C U1 U. lD a: ::>en a:w 0 I- tD <C ~ <C Z LJ)<C LJ)I- <C ~ 0 lJ) a a 0 0 0 0 0 LJ)a LJ)0 LJ)a U1aaenenQ)CD l" C\J N -----(1..:1 )NOl1~~313 3J~~~ns ~31~H I I I2050:1 1 i :ii'i;iii iii i -2000 '1 ,11 i I .I Ii t r -I t l-- .j tt-u..---- Z'li--01 ~I lit---i I III J I,~19pO!'i I •__ t-j i IT>~I I I w900 J I J J I I I1.-•.•-,I J-1-W _---u ([ u.-.-___ii,n:::_ ffi 1850 1 ,:L~G£N[I MAX - -- ---- -{5 ,Ii AVO 1--,I,",.I j MIN----------.1IT".Ii ::l liE;30Q II 1750 I I;I I I 0;I I I I I I I ~ .JAN FEB i MAR APR MAY!JUN .JUL AUG SEP OCT NOV DEC I 1 • WATANA WATER SURFACE ELEVATION I MONTHLY;SUMMARY,STAGE n FIGURE E.2.4.115 ~. ~~----~.o__~' .... ~ 'J P IJ .J ~ ;,.;;J U]-I.&. <.J :> 0 m Ln 7 fD 1(J) I--II ... CII--.JX ~17 ~,. ~ ~ (7 .J "7 "7 ...J [;;J 7 to,.. IJ)~ CD CIl ui wa:::t S2u.. 0 OJ 1=1 w C' U1 « ['I- (J).. :5: 0 0 ..J ['U. Z a:- Ul 0 c..D >a:w (J)wa: 0 «c..D z.« I--« Ul :5: lJ) o lJ) oooa lJ) oooo ""f aooo (T) IS::!:)}MOi.:iNl aaoo N ~IaA~3S3~ oooo- o ----r::-~ -ir--" I ....~ --1.0--' - --------.......------....... -~ ------"-----"---- -0::=- ---- - --1·-----"_.1-"------,-.------"---"-----------------1------1---.t:::" ~ -II:::::"'" ~ .-Jr-- J---"= _.-_.--- --_.---....... oooo "'f oaoom (S:lJ) a 0a0a0aa N -MOl~lna ~lOA~3S3~ Uico o CD .. ~o ...Jau.. £'I- :Jo 0:-UL 0 c..o > a:w UJw o a: to <C Z--« --"--1=="--« Ul 3:Ul a Ul o J ) 1 !::::.... ~)(II u.i wa: :;) J Si!u. .\ j ~J !- -,l 1 j 1 j \ j I ( ( } ... - =-~ .. ;:IIP ~ I I ...-I I ~ ... ::--- I oo IJ)- o IJ) ~- oo ~- o IJ) (T')- ~... ~ (II ui wa: IJ);:) CD S2u. ~ W ~ 0 <C CD I-en A::z 0 Lf)-l-I:'<C > W ..J W 0 IJJ('()«u.ex: ::;:) Lf)en LO ex: W I-« a 3: to Z 0 >- Z <C ill () ill ..J-> W C a Ul oa (T)-(l~)NOll~A3l3 3J~~~nS ~3l~M 1500 i -1475 t-u... z °1450..... t-a:>w .-J . w 1425; W! Ul ([I l.J...i ~!,~l~OO i ~i Wi t-i ([! 3:11375 1350 i I , I i· ,----------------I '----_..- :...-............ ..............- .......-......- . ...............------ I ----------..- ..L~GEN( MAX-------- AVO HI N-.......................... II JAN FEB MAR APR MAYI JUN JUL AUG SEP OCT NOV DEC ~, OEJ, i ! CANYON WATER SURFACE ELEVATION MONTHLY i SUMMARY,STAGE n FIGURE E.2.4.119 - .......-::: ....II ~ ..l ..... -t::-',.... .....l ~ ~1Iio -,......;;:II="""" .....lr:::;:::..... ......r--- ...,j;;;;;>'" ~ I -i:::::'-"' ....I ~ ....e:::=- .....lI---' :=P'" -t:::-" ...I;? .....r;;...iiiiiiI -.L ~ -&11II:" -'= --'i-=l"" .....i='iilII -..- "'=lIC" -....- -l i-=!II ---b:::--'I=""..... a a 0 a 0aa0aa00aaaaa "'3"m N -IS::f31 MOldNI ~Ia[\t!3S3et U1 OJ 0 I=lOJ w C' <C I- U1 en [".. ~ 0 ..J U. 0 Z [" 0::-0 > 0:: U1 W to en W 0:: Z 0a>-to Z« () ..J-U1 >LJ)wc a LJ) } f I J j ( :j J ) i J ( -I I ! 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I ........-........-------........-_._...... i L~GEN( MAX-------- ,RVO Ml N-............,.-.- JRN FEB rj-1RR RPR MRY JUN JUL RUG SEP OCT NOV DEC DEVIL CANYON WiATER SURFACE ELEVATION MONTHL Y SUMMARY,E-I,STAGE n FIGURE E.2.4.127 '--------...'---'----..:------..----JL '-------- I l I I 1..- I I "1.1- : :.I-'" . I ...p- I I I .:;7 ~ (;;;;;;'..~'" I I ,I ....... i I I I .£ I -= e::;;;, rI::::.- ...- -~- 'c::::;;; - Il rc;;,...... w:::. ..J..-- I)ooaa Lf) oooo "'1 oooo (T) tS::];MC"".:l\lI oooo (\J C:!I OM:J3S3~ oooo- co C\l.... '<t Lf)Na:J W wa: ::;) ~u. ~ 0 Wa:l <!' <C I- (J) lJ)t-fI'{'"W.. S; 0 ..J0u..('"z a:-0 Lf)> lO a:w (J) wa: 0 z lO 0 >- Z <C 0 LO ...JLn->w 0 0L1 ~] "4; ~'l L .a: =' I=t rJ w (!) :I« t-en I-i j I W..J~ 0 ..J .].I.L. t- :::J 0 .~ ex:-0 .!>ex:wen Jwex: z j0 >-z i...c:( 0 ..J 1->wc j ) ] I j IJ) c.D o OJ or-- o LD ar Lf) o If) 0 0 0 0 d 0 0 0 0 0 '0 0 0 0 0 0 0 ..q ('T)N -(S:::!J)MO"l.:!lr:O e:lIOl\d3S3e:1 ! _I.i:::: _lor- ir- ;;;;;i"" _.r .... ...... ~ .Ir -.... --- I.l: I ~ 1-- -.....•..... 1;1' ....... ..,.-. ..-i='" """" ~ .•. ""~"--'..-------r=:::--.. ......1-- ~ iJ i.r .....~ ...... 1',, I I , I I "I' I ", ",\I, I,<"---l''II .... 10 20 30 THOUSANDS 80 I LEGEND NATURAL CONDITIONS 70 J 1\I ---FLOWS FOR PHASE 2 0 2-STAGE PROJECT D I I I\I ----FLOWS FOR STAGE 2 ( 60 3-STAGE PROJECT Is c h 150a r 9 e 140 c f n s FIGURE E.2.4.130 ALASKA POWER AUTHORITY SUSflNA HYDROElECTRiC PROJECT AVERAGE W·EEKL.VsiiSITNA RIVER FLOWS AT GOLD CREEK FOR 1964 HYDROLOGY STAGE II E-VI FLOW REQUIREMENTS ~.:..~I_. 'I~"1--~......... DECNOVOCTSEPAUGJULJUN tvton t.h ---------,I ~\..::..---..:..---:----=------ -------------~l ~~ I r I -~--~--~r ' , , , , JAN FEB MAR APR MAY o THOUSANDS LEGEND 50 ---NAruRAL CONDITIONS ---FLOWS FOR PHASE 2 OF 2-STAGE PROJECT" D I S 40 c h a r 9 30 e ALASKA POWER AUTHORITY StJf,t1NA HyonOElECIRIC PROJECT A VERAGEWEEKi.Y "sUsi'fiiARIVER FLOWS AT GOLD CREEK FOR 1967 HYDROLOGY STAGE II E-VI FLOW REaUIREM~,E",N=T~S__...: FIGURE E.2.4.131 T NOV DEC ----::.;::::::::: \ - - - -FLOWS FOR STAGE 2 OF 3-STAGE PROJECT I' ~I'\ I I I \I \, I I I AUG SfP OCT Monl:.h I II I I 4PR MAY -JUN JUL I 1 FEB MAR-JAN o 10 20 ,.. T S c n "---'---"'._-~ L-- T~OUSANDS 30 LEGEND --- -FLOWS FOR STAGE 2 OF 3-STAGE PAOJECl ---NATURAL CONDITIONS, ----FLOWS FOR PHASE 2 C 2-STAGE PROJECT' " ...---...... -- I I I~ I, I I I,, I, I I, I I,, I I I,, I I / l ~__..,.J ------...._- --....._---------- 5 15 10 20 25 c f s D a r 9 e n s c h Month FIGURE E',2.4.132 o JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ALASKA POWER AUTHORITY SUSflHA H'ronOElECIAIC PROJECt AYERAGinvEEKLVSUSITNA RIYER FLOWS A T GOLD CREEK FOR 1970 HYDROLOGY STAGE II E-YI FLOW REOUI~EMENTS ~~I -..····1 \'- ALASKA POWER AUTHORITY, SUSJ1NA.HYOROElECfAlC PROJECT AVERAGEWE:"EKLVSUSITNA RIVER FLOWS AT GOLD CREEK FOR 1981 HYDROLOGY STAGE \I E-VI FLOW REQUIREMENTS ~.:-~~I ~........_al"·'I - DEC LEGEND NATURAL CONDITION FLOWS FOR PHASE 2 OF 2-STAGE PROJECT FLOWS FOR STAGE 2 OF 3-STAGE PROJECT FIGURE 1:.2.4.133 --------...----- NOVOCTSEP ~ i~ I'n I \ ~\ I I ~\ I I ~\ I I ~\ I I ~\ I \ I \ AUG I I I I I I : I I I : I I I : I I I : I I I : I I I : , I I : I I I : I I I : I 'I : , I_L: Month JUN ·JULMAY I,--,....,"'7-,~~'-" ---- MAR APRFEB -----~-------------~ JAN -- - - ---,------ o 10 40 20 30 THOUSANDS 50 i n c f 9 e s D a r s <:: h LEGEND --NATURAL CONDITION FLOWS FOR PHASE 2 OF 2-STAGE PROJECT FLOWS FOR STAGE 2 01 3-STAGE PROJECT ,...-- -----------..--- \ I I I I I I I I I I I I I I I I I I I 1 I I I I I I I I I I I I I I I I I I I I I,,, I, , I ,"_-,-r------L ---' 1/,.-J '/I I / --------- ------------... --------.._-- 5 o t 0 15 THpUSANDS o s c f 9 e n D a r s c h o JAN FEB MAR APR MAY JUN -JUL AUG SEP OCT NOV DEC ALASKA POWER AUTHORITY susnNA HyonOElECJAIC PROJECT AVERAGifW"EEKLYSUSITNA R~ FLOWS AT GOLD CREEK FOR 1982 HYDROLOGY STAGE II E-VI FLOW REQUIREMENTS I ~-:-~~-l FIGURE E.2.4.134 \__-'''._1.0 ,I~Ionl::h LEGEND: NATURAL I:f::f:::::::::::~~IE LEV A T ION C HAN GE / V V I I 55·1 538 550 556 zo I- oe(552 >w ....J W F';;;w;'·....,...... I- W Wu.. 111 ~ .... co ll') ll') o 0o0qq C')0 C')C') ....J ....J«« 0:,0:::>::> I-:1-«i«Z Z .... a> ll') ll') ooo '<t '<t ....J« 0:::> I-« Z - - -WITH PROJECT 558 "....-~=~=~---.,r---, ,)..) 556 550 554,...... I- W W u......., Z 0 I- oe(552 >w ....J W FIGURE E.2.4.135 10,000 20,000 30,000 LR X 28 RA TlNG CURVE(2 ) GOLD CREEK DISCHARGE (CfS 548 oMAYJUNJULAUGS[P 13.,19 10-16 15.,2 112.,18 9-15 MINIMUM FLOWS 90%EXCEEDANCE MAY i.JUN JUL AUG SEP 13-19 i10..J1615-21 12-18 9-15 'MEAN FLOWS 50%EXCEEDANCE WEEKILY AVERAGE WATER SURFACE ELEVATIONS AT·RIVER iMILE 124.4,STAGE II 548 MA Y JUN JUl AUG SEP 13-1910-1615-2112.,18 9-15 MAXIMUM FLOWS NOTES.10%EXCEEDANCE 1.wATER SURFACE ELEVATION ABOVE RATING CURVE 2.RATING CURVE BASED ON COM PUT A TIONS AND OBSERVATIONS (HE.1984-) MIODLE AND LOWER RIVER WATER SURFACE PROFILES AND ~ -/ / / / / I 622 614 620 612 o 10,000 20,000 30,000 l RX 35 RATING CURVE(2) GOLD CREEK DISCHARGE (CFS) 618-....wwu.-za ~616 >w...w MAY JUN JUL AUG SEP 13-19 10-16 15-21 12-18 9-15 MINIMUM FLOWS 90%EXCEEDANCE MAY JUN JUL AUG SEP 13-19 10-16 15-21 12-18 9-15 MEAN FLOWS 50%EXCEEDANCE It\\\f\{{\\\\\\1 ELEVATION CHANGE WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 130.9,STAGE II NATURAL WITH PROJECT -0 N N -0 ooo -:i o:t...... ~ ~::::> I- ~ Z lE 612 614 620 ~2,I~..~i -618....wwu.-za ~616 >w...w MAli JUN JUL AUG SEP 13-W 10-16 15-21 12-18 9-15 AXIMUM flOWS NOT E5:10%EXCE EDANCE 1.WATER SURFA E ELEVATION ABOVE RATI G CURVE 2.RATING CUR E BASED ON COMPUTATIO S AN 0 OBSERVATIONS (HE,1984-)IDDLE AND LOWER RIVER WATER SURfACE PROfILES AND DISCHA GE RATlNq CURVES.····- FIGURE E.2.4.136 y ~ / V V I f- 754 750 758 756 za....«-752>w -J W -~Imilit ~- MAY JUN JUl AUG SEP 13-19 10-16 15-21 12-18 9 -15 MINIMUM FLOWS . 90%EXCEEDANCE _lli -:'p~-ijIii!i!, " El EVATION CHANGE I MAY!JUN JUl AUG SEP 13-191 10-16 15-21 12-18 9-15 IMEAN FLOWS 5:0%EXCEEDANCE. 748 0 10,000 20,000 30,000 LRX 57 RATING CURVE(2) GOLp CREEK DISCHARGE:_(CFS) WEEKLY AV·ERAGE WATER SURFACE ELEVATIONS I AT RIVER MILE 142.3,STAGE II ;. N 0: ~ aaa..,; .;t ....J«ex::::> ~ Z LEGEND: NATURAL - - -WITH PROJECT 748 I •,,', 758 750 756. -754....wwu.-za ~752 >w -J W MAY JUN JUl i AUG SEP 13-19 10-16 15-2l!12-18 9-15 MAXIMUM flOWS NOTES:10%EXCEEDANCE 1.WATER SURfACE ELEVATION . ABOVE RATING CURVE 2.RATING CURVE BASED ON COMPUTATIONS AN D ODS ERVATIONS (HE,1984-)MIDDLE AND LOWER RIVER WATER SURFACE PROFILES' AND DISCHARGE RATING CURVE$'P.' --,:;;-"-----..-l.----- FIGURE E.2.4"131". \,;::-._-j THOUSANDS NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-19B~ 2.STAGE 2 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS 4.E-VI FLOW REQUIREMENTS LEGEND 6%EXCEEDENCE FLOWS 50%EXCEEDENCE FLOWS 97%EXCEEDENCE FLOWS ",",'~,',',\,\,\,\ I \ I \,\ I 'oO'....,,'I \ I ',,'_=~,,~~J '.",----/..~,--'I....~..r---------../"\___-=-=-.....,,..I ..\a....,.-=-::..:::_.."~_-_'r--J ".,----..-"- -__....I ...-~---_J -- 10 40 20 30 s c f n 9 e a r s c h D Month o JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC FIGURE E.2.4.1 38 AlA8I<A POWER AUTHOfIITY susn~tMJAOELEC'RtC PROJEct 8U81TNA RIYER STREAMFLOW8 EXCEEDED 8%,5011>AND 9711> OF THE TIME AT GOLD CREEK STAGE" ~~I_o -,--01·'I'- ~THA tfYtJOO£t(Clrnc f"'OO.l:CI IU.....S:<A POMR AlJT}101llTY 3.AVERAGE WEEKLY FLOWS 4.E-VI FLOW REQUIREMENTS 5.DEVIL CANYON DRAWDowr OF 50 FEET LEGEND NATURAL CONDITION FLOWS FOR PHASE 2 OF 2-STAGE PROJECT FlOWS FOR STAGE 2 OF 3-STAGE CONSTRUCTION DEC ----~--:----~-- NOVOCTSEPAUGJULJUNMAY~PRMARFEBJAN 17;-';02:7GJ2i8M80K~~£w0W~lli0i0li0~i2#li(i~Ii~.i0%~~i0!~0IMR~80(82AImhTI~NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 2 OF 3-STAGE PROJECT o 10 20 40 50 30 THOUSANDS 60 c f n s 9 e a r D i s c h Month SUSIT""RIVER 5TREAIoIFLOWS EXCEEOED 6%OF THE TIME STAGE II AT GOLD CREEK ~~.:-I, FIGURE E.2.4.1391--.--I-1-- .,;. ~...-- 4.E-VI FLOW REQUIREMENTS 5.DEVIL CANYON DRAWDOWN OF 50 FEET LEGEND NATURAL CONDITION FLOWS FOR PHASE 2 OF 2-STAGE PROJECT FLOWS FOR STAGE 2 OF 3-STAGE CONSTRUCTION --- ----- , I 1 I I I I I I I J I J I J ;NOTES:MAXIMUM=35.000 efs 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983!"-..2.STAGE 2 OF 3-STAGEI\PROJECT ---------', \--------~~~~~~~~~~-~- o 5 5 SANDS o 10 15 n c f s e 9 a r D s c h JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Al..AS,'{A PO~AUTHORITY SU'!7JKA '~lfC1'nac MlO.KCI MonLh SUSITNA RIVER STREANFLOWS EXCEEDED 60%OF THE TIME STAGE II AT GOLD CREEK ~~=,,::::,,1 1--FIGURE E.2.4.140 1-··...·-1-I Al.A~A PO\";'ER AUTHOIllTY gr.:nHA Hy{'n:Jflf.CfntC MlO..ECl SUSITHA RIVER STREAMFLOWS EXCEEDED 97%OF THE TIME STAGE II AT GOLD CREEK :JI~.:-~I, -.·-1-r . FIGURE E.2.4.1 4 1 DEC ~-- ..---....,-.. 4.E-VI FLOW REQUIREMENTS 1 ::l'!l l i!!ilj;1 5 •DEVIL CANYON DRAWDOWNOF50FEET =~==-----'1 LEGEND NA TURAL CONDITION FLOWS FOR PHASE 2 OF 2-STAGE PROJECT FLOWS FOR STAGE 2 OF 3-STAGE PROJECT .,- I NOV I I I SEP OCTAUG MAXI'MUM FLOW=35.000 cfs Mohlh I~PR MAY JUN JUL I JAN FEB MAR ----;\ -~":---- ---- ---,--:-'--::_- L..+..>.I I ....I NOTES: 1.HYDR FROM PERIOD 1950-1983 2.STAGE 2 OF 3-STAGE . PROJECT 3.AVERAGE WEEKLY FLOWS o 5 10 15 20 THOUSANDS 25 s c f e n a 9 s c h rr D 50 NOTES: ALA5I<A POWER AUTHORITY susnHA ftr(JA()£He ,me F'RO.ECI SUSITNA RIVER STREAMFLOWS EXCEEDED6'l>.50'l>AND 97% OF THE TIME AT GOLD CREEK STAGE II ~.:..~I- -'·---1-I - 4.E-I FLOW REQUIREMENl LEGEND 6%EXCEEDENCE FLOW~ 50%EXCEEDENCEFLOVII 97%EXCEEDENCE FLOVi 1.HYDROLOGICAL DATA FROM PERIOD 1950-198:3 2.STAGE 2 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS DEC r,"-,/ '..._--"""-'-' FIGURE E.2.4.142 ,-........ I \ I \ I \ I r ....\ I ~-.........:...l ....JL_______\\ I ,~\ \ \ \'-\ \ \\,,".......,\.--,~,~-- Months I ,/1 ~~~,I------------~~~.'1--....,----""''-~=-==::.-_/' JAN 10 40 o 20 30 n D e c f 9 s s c h a r ALASl<A POWER AUTHORITY ~1,,",HYtncxlEClnwc rRO.1ECl SUSITNA RIVER STREAMFLOWS EXCEEDED 6';OF THE TIME AT GOLD CREEK ~~l ---I-I'- 4.BETWEEN JUNE 10 AND JUNE 16 THERE IS A SPIKE TO 45,000 CFS 5.BETWEEN AUG 12 AND AUG 16 THERE IS A SPIKE TO 23,000 CFS 6.BETWEEN AUG 19 AND AUG 25 THERE IS A SPIKE TO 16,000 CFS LEGEND ---NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS FLOWS FOR E - I FLOW REQUIREMENTS 2.STAGE 2 OF 3-STAGE PROJECT NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1963 3.AVERAGE WEEKLY FLOWS DEC ---....... --l CASE E-I MINIMUM ITLOW REQUIREMENTS FIGURE E.2.4.143 Months ------r .I I I I MA Y JUN JUL AUG SEP OCTAPRMARFEBJAN --------_:_~------------ I, ~,,, I " /. ,_,/',I I \ ' 11 "l ~ \I"""'"I i \;'''' I :\:I I " I ''I'I I I:'-,' 1\'II.,I I /"'"I \ /l \J.--JI ~I ",," o 10 20 THOUSANDS 60 50 D i s c 40 h q r 9 e 30 ,--,'~-- A!.A8l<A POWER AurnoRlTY SUSI'lN4 HY1.JhOElEC f.-c mo..I:C' SUSITHA RIVER STREAIIFLOWS eXCEEDED 50'll\OF THE TIlle AT DOLO CREEK ~.:.~I--.--1-I'- LEGEND --NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS FLOWS FOR E - I FLOW REQUIREMENTS JUNE 16 THERE IS A SPIKE TO 45,000 CFS 5.BETWEEN AUG 12 AND AUG 18 THERE IS A SPIKE TO 23,000 CFS 6.BETWEEN AUG 19 AND AUG 25 THERE IS A SPIKE TO 18,000 CFS 3.AVERAGE WEEKLY FLOWS FIGURE E.2.4.144 ------....--.-..-.. SEP Months JAN -----.........-----~"--.-----,-.--.--.-r;--- -...-------'" '. NOTES: -~~~IIIIIIIIIIIIII[~:~-----1111-117-~--~-l1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 2 OF 3-STAGE PROJECT o 5 fa 15 25 10 THqUSANDS 30 D 9 e n s c h a r c f s ALABJ(A POWER AlIllfORlTY 4.BETWEEN JUNE 10 AND JUNE 16 THERE IS A SPIKE TO 45,000 CFS 6.BETWEEN AUG 12 AND AUG 18 THERE IS A SPIKE TO 23,000 CFS 6.BETWEEN AUG 19 AND AUG 25 THERE IS A SPIKE TO 18,000 CFS St.r.7INA to'DAOEl[Crf-e mo":CI LEGEND ---NATURAL CONDITION --:-FLOWS·FOR E ..VI FLOW REQUIREMENT: FLOWS FOR E - I FLOW REQUIREMENT NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 2 OF 3-STAGE - PROJECT 3.AVERAGE WEEKLY FLOWS ...---.... ---_/... ,.~.",~ -, \ '-----......,I,---,---::r---:...I----------------l\',,-, I 1\, I 5 o 15 10 20 THOUSANDS 25 D c, f s c h s' a r 9 e n Mont.hs SUSITHA RIVER STREAIIFLOWS EXCEEDED 97%OF THE TillE AT GOLD CREEK ~..!'::1_ FIGURE E.2.4.145 1----1-r:: -.....--::..:-- FIGURE E.2.4.146 ALASKA POWER AUTHORITY SU$IlNA HyonOElECJRIC PROJECT AVERAGEWEEKLY SUSITHA RIVER FLOWS AT GOLD CREEK FOR 1964 HYDROLOGY STAGE:Ir ~-""""-I,--- ~-""'"-'I'I'- LEGEND ---NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS FLOWS FOR E - I FLOW REQUIREMENTS DEC-NOVOCTSEPAUG Months :1 I " ,I ' , I I /I "I :II j,'"I I I '\I ,,' 1\I J1 'I/'\I Id~~ 'I! MAYAPRJAN -----=-===-=--:~- - - - o 10 T D c f a r 9 e s n s c h Slr.inHA HyOROElECTRIC PROJEct AVERAGfnVEEKLYSUSiTNA RIVER FLOWS A T GOLD CREEK FOR 1967 HYDROLOGY ALASKA POWER AUTHORITY LEGEND ---NATURAL CONDITION ---FLOWS FOR E ::.VI FLOW REQUIREMENTS FLOWS FOR E - I FLOW REQUIREMENTS DEC -----~:::;:-:::-=:---- SEP -OCT -NOVAUGMAY'JUN JULFEB'MAR I'APR i JAN o -,----...'\.___...7-- 10 40 20 50 30 THOUSANDS C F S I N D I S C H A R G E MQNTHS STAGE :n: ~'--IFIGUREE.2.4.1471"::'::~:·~.I~ ";",:'- '------<~~< TH~USANDS 30 ALASKA POWER AUTHORITY. susnNA HTOnOElECTRIC PROJECT AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1970 HYDROLOGY STAGE II ~~~I -I--I"---............ LEGEND ---NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS ----FLOWS FOR E - I FLOW REQUIREMENTS DEC ,-.. 1 .., 1,,, 1 1 FIGURE E.2.4.148 -----'--- OCTSEPJULMAY·JUN MONTHS ••Ii """""",D,, ,D, ,,,,,,,,,,, ", :'I"__.___I '\,------,, I : I I •,V---------J If--: I ' , I I, 1 1---' APRFEB o JAN 25 I D I S C 120H A R G E 1 15 I N C 110 F S I 5 _>_____.... FIGURE E.2.4.149 DEC ALASKA POWER AUTHORITY susnHA HYDROelECTRIC PROJECT AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1981 HYDROLOGY STAGE ]I ~~~T ·1--I -~.........." LEGEND ---NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS FLOWS FOR E - I FLOW REQUIREMENTS " ,I ,I 1 1 I -..l J "J, I J Ii,'Ii I : If "If ", Ii_._"'4 I MOfNTHS JAN ------.:--::-=::...----7--:-.---t"------,-------- 13 113 THOUSANDS 513 D;413 I S C H A 313 R G E I N 213 C F S r' "------''--------' '--- THpUSANDS 30 LEGEND ---NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS FLOWS FOR E - I FLOW REQUIREMENTS ,--"-------::------,'".... I '-'-_...-'" I:'~V·~:I I I I 18 I I I I 8 I I I II I I : I : 8 I I I I I I II I I I I I 8 'II I I I I I J II I II.._______'8,,I I I I 8 I III I I I I I I I I J ,I ,..I " I -,-___II,--- I I,--,,,, -'5 -------......."------.---_..-...-...-...... ------------- 10 15 25 20 C F S I N D I S C H A R G E FIGURE E.2.4.150 o JAN MONTHS SEP -OCT DEC ALASKA POWER AUTHORITY susnNA HYDROHECTRIC PROJECT AVERAGEnVEEi(LYSUSITNA RIVER FLOWS AT GOLD CREEK FOR 1982 HYDROLOGY STAGED: ~.:-~~I ~-"'-'~'I~"I'.. i I LO ~.lOal~!~~~~!~~~~!~~~~~I 9 ,S! 01 8'l~ImI llf D::I It'.. lfl LO A Ie lOA I >----~---- - --- :j 'It!- LL I IL ,-- u I .......u r::=l::=t===f;;f::f=~::;t~±~f=1~!'§I(~IOJ i <:10 3 ---.. W ,IlJfi,Ii -- ~i ~ Ul I ,In o 10 z 'I •0 10 2 -t---ll---f---t---lt---+-+----it---t---f---f o \0 211 51 lQ I:!II i 10 1IJ III 1IO liD Q 10 III :D 41 50 III 10 IlD 10 \00 PERCENT lJ'IOlTHS OI5CHA~liS EllJAllED rn EXCEEIED P£.IlCENT (F !'mIHS D19:1flIn IS E(lAl£D (R f.xI:EEOOl OCTOfI:R NOVEtl£R105II106_n _.;._-f-.-0 r---_____,-_ '5 :,'5 -f---- U I U -- W IlJ Ul.I U)---f--+---+-----f---jl--i ffi I ffin.LOA n.lOA I-,.....t--- W I IlJ W I IlJ~I IL U 1 i U m I m :::J I :J~10 J I <:10 3 _ ~,~-- ~:iblII'bl o 10 z I·I I 0 10 Z +----il---I----+----il---+--+----ir----+--f---f \0 !.I !Sl 110 I ZIl I>41 ill liIl Q.!II ~_I D PERCENT OF ItONTHS Dl~IIS EWAl.LEll rn EXCEElED I PERCENT (F !'mTHS OI~IS ElLR..lED OR EKCEEQEO DECEI1BER LEOEtll ..IAtUR1I:I I I INAT~ NOH:.FLOW PERIOD HATER YEM 1951-1983 _ - - - -.WITH-PRO.£CT.STRGEIl FLOW OJRATloN ClflVES,.,_.I i 'CASE E-VI BASED ON MONTHLY OISCt-flRGE HARZ~-~O StJSIT~.DINT VENTURE .!u£85 SUSlTNA RIVER AT WATrK\Of:f1SlTEI, FIGURE E.2.4.151 (PAGE 1 of 3) '---.~ LO~ Sl 8 lH Ir Ie LO 4.... ttlu. u ~10 1 ~ !E M - - lOG -- t-- o 10' l05 ~w m s ~s m ~•~~ PERCENT m:tllNTHS DISCIRU:IS EWAU.EO (If EXCEElEO FEBR1.JRRY o w m m •••~••~ PERCENT IF ~Uti DISJiARGE IS EllR..J.£D OR EXCEEIB) tIARCH -- ~ ~ci IIlN 'Hs DIlmRlE IS ~tt.1o EXtEElEC I PERCENT (B="IBUlB DIs:t-Ha IS EWUED OR·EllC£E££O /tRY - ----..:-... I ~D lill I I LEw.oAPRIL [J li iii IJ) Ir~10 4 ~ ~ IL. U...mq 10' i bJ o 10' "-OTE,FLOW PERIOD ~TER YERR 1961-1963 ~1Wl-E8RSCO sus I~.J]INT VEN1lJE ..u£85 NAT~ -----WITH-PRO..£CT.STIG:II CASE E-VI FLO~DURATION CURVES BASED ON 110NTHLY 0[SCt-J\RGE SUSITNA RIVER RT WATru:l 0rt15ITE FIGURE E.2.4.151 (PAGE 2 of 3) --+--:=-~ -I---+-' FLO~OURATION CURVES BA5ED ON NONTHLY DlSClilRGESUSITNARIVERATWATHNAOAMSITE II+-II-t~ - -.... - '-1 I I I -I-I I -I---....... ~ro ~~~~~~~~ PERCENT OFto.ITHS D1!DmGE ISECllR...LEO OR EXCEEI£O SEPTEI1£R ~---II----j\I I I I I I +-- I-- o W M ~~~~~m w ~ PERCENT [J'"to.ITIlS DI9:tnn IS EGlJlLI.ED OR EXC£ECID ..u.Y STAGE II 10 5 =l---rF="F ~lOA - t- W W U. w ClQ: i ~I Io102I I D I I I I I I U tIl :J LJ .... ttlu. u ~ou 1M Q: &IO'~ ~ l.!10 3 w ClIt ~ ~. &l 13 102L-!--~+-t-±-+-;;-r~:-J o e5uw Ul 11n.. ----"--1"r----......- ~t t·t-~-+I I 1-1 to~__~ LO I o W M ~~~~~~w ~ PfRCENT OF I10NTHS DlsetnG:I Er.I.R.L.EO (R (XCEHED IJUI£ la'I l03~~ o 10 2lJJ!:q=+--!-~Htjjt:t~ 2 B ~lO'iiiii~~~~I~~~ u.... ~ ~ !f hi , I1ARZA-EBASCQ'SiJSITNA JOINT VEN'!"JRE JUNE 86 D 5u W lO ffi \-~~.ZPo~_... n.IO~,.~,- ....wwu. u m::>u w ~ ~ ~ o 10 z+-_+--+_-+_+----'+-+--I-_-I-_ w ,•• PER£ENT Of tIONTHS OISC~IS E!J.JPt.LED m EXCEElEO AUGUST!lEPEND I :NJ:lTuRHL NOTE.FL.OW FERI~WAiER YEAR 1951 11983 -----~l~~-~~~CT. FIGURE E.2.4.151 (PAGE 3 of 3) .~-~. 10!> I I II I IIIolOrI I I o ~~~~~~~m ~~ PERCENT (V'IllNTHS OISC~IS EQ.JAl.lED m EXlHIHl OCTOlER PERCENT (f'~THS DI9::.mce IS EOOUEO OR EXCEEDED .R-mR'1 --I---- -- - - - I b D ill ill il I -------r-- o w m ~~~m ~m m ~ PERCENT (f'~TH5 DI9:1-IlRCE IS £1lA..lm OR EXCEEmJ ICYEl1IER lOG 1011 0 ~ U UI III It: ~10 4 ... III III... U IIIq 10 3 ~ ~ lrlo IOZ ~ lH It: ~10 4 ... ~ u... ~10 3 ~ ~ lrl o 102 LEGENDOCCEl1l3Eft -f-. ---I----I--r----"- r---1-0. -- pER&m Cil l10NfHS Olbn IS ~~D rntllE)(~I f---+I -,I I I I I I I !Z 8m lr lfl LO 4 _ .... i1JlL. ~103t~~;t~~~~~~~I;UI f? ~ M o 5u UI (J) lr It 10 4 t:i UI lL. U Inq 10 3 ~ 9: M (}ta Z NOTE.FLOW PERIOD WATER YEAR 1951-1983 I-lARZA-~O SUSl rNA .JO INT VENT~JUI£86 -NATLIR. - - - - -WITH-PRO-ECT.ST~II CASE E-VI FLOloJ DURATION CIJ1VES BASED ON NONTHL Y OISCliiRGE SUSIT~R[VERRT OEVIL ~YON O~SITE FIGURE E.2.4.152 (PAGE 1 of 3) , 10 3 i !I ! 10 5 51 2 --, Q I 8u Ii!,as lr i ; !Q:: ~10 4 ~10 4 ~,-..... ill -ttlI '-LL u.. U U........ llj ---~-r--- I.!LO 1 l!10" ~l1J I ~-- ~---i hi I i --f--b!f--- o lO'i I o 102 I I 0 10 ;:0 1lO 'II 111 .10 11)eo 110 101 0 10 m 31 40 50 eo 10 eo III 100 PERCENT [F I10NIlIS DI~IS EIlR.LED m EXCEElED PERCENT OF tOlTllS OIS::lmGE IS EWHED ~EXCHIIDI, FEBRlIlRY ~ Wli I I lOS - 0 ,o f------ ~,--z ---f-.---f----,f--- I I a 1-- u I u 1-----w I l1J 1---'--Ul UJ ~'--n:I Q::u;W (l 10 4 0..lOA 1----...---f--;-----'w -w -W I W -"-LL I lL .... u i I UI I -m i en :J I :::Jl.?to 1 l!10"w ~~I . ~I i bl !I lJl o 102 i I o 102 t%;'ill I:b.0,30 I'll ~~,60 611 10 III 100flER.NT (j IOfiHS DI~ilS EIlR.LED m EXCEE[ED •PERCENT OF tmTHS OIOCl-mGE IS ECllR..lED OR EllCEEDED AfiRIL!LEW{)KAY .I i NATlJIAL NOTE.FL()olPERICII ..-=liER YEM 1951(963 -----HITH-PRD.£CT.STAGE I FLOW DURATION tUR~ES :r CASE E-VI BA5ED ON MONTHLY orSC~RGE,I SUSlTt-JI RIVER RT DE'IIL cr:t-l'lON Dft15IiEHARZA-EBASCOSUSITNA JlINT VENT~E ~as ! , (PAGE 2 of 3) --.-'~ 10 s PERCENT OF"I'mTHS DI9JmC£IS EQUUED OR EXCEEDED SEPTEtf£R f---.-----r--- -..----c-- --f-- f-- .- - I In IilI £Il ~I b I -----.-~----... ~- o ~m m 4 ~~~~m ~ PERCENT (J'I1!JITHS DIOCHARGE 15 EWlllED OR r..xcrmo .ll..Y lOG o 5uw U'l It: ~10 4 I- W W II.. U Q) ~10 3 ~ ~ ~ o 102 ~ S llf Q:: ~10 4 I- W W II.. U.... ~~10 3 wnll: ~ ~ o 102 lOS 1------ ---:::-::l'... r-~c- -1--- . 10 20 4(J b_ID I>IlIl ~I LO ~~3==t===~~~::!2!nu l}/ PERCt:NT Of HONTHS OISCHAI«IS EQJALlED [R EXCEEIEO f:U>LST lEGEt{) o ~~~~~~~~~100 PERCENT OF tIONTHS OISCtml:15 ElJJALlED [R EXCEEIEO JU!'E nzo U ul U) Q: ~10 A I-- W W U. u m ~lOa wo Q: ~ M 5 lOI ~La·tj:~;~;b~~~~~§~~.- 1iJu. --I u -J==l--_,"l ,==t==_----'u to _4- W I-_ .---J--t-o I-FQ:--;-~I I IhlII I--I I Io101I I NOTE.FLOW PERIOD wAiER YEAR 1951-1983 HARZA-EMSCO SUSITNA JOINT VENTURE JJN£86 NAT~ WITH-PRO..£CT.STAGE II CASE E-VI FLOW DURATION CURVES BASED ON MONTHL'f DlSUIiROE SUSITI'i1 R£VER AT [EVIL CANYON O~SITE FIGURE E.2.4.152 (PAGE 3 of 3) FLOW DURATION [UR~ES ~5ED ON MONTHLY m5C~RGESUSITNARIVERATCOLDCREEK ~~~~~~~~~. PERCENT (F foOlnlS OI9:tmG£IS ElllJUEO OR EXCEElIO ....tmv -- ~ i"o~ ---I'-. --i----_.-f'----,....--_.- t----t----t--t--t--t-.---t---t--t--"j---l--I---I--+---+--+-+-+------ o m ro m •~m ~m ~IW PERCENT (F ~HlS DI~IS ElJJUED OR EXCEECID NOVEtt£R STAGE II to S~~;;o 5 ld t/) ffi..___._~10 _ _~ t- ILl __ILl Il.. U m:::>~to 3 ILl CI It: i Irl -I I I IolOi!I I II I I I I lOa !t 8 ~ It: Ie 10 4 .... ILl ILl II.. U... ~11~lO ILl CIa: ~ U! o to2 I I i .i I -....~ i I I r----- --. I . 10 ro b 0 llll ....I o w m ~•~~~m ~~ PERCENT OF .I1ONTHS D1sct¥Ri£·J EWALLED rn EXCEEllEO ..'OCT~R lO Q Lo~~~ii:iiii D 5u W trl lr ~10" I- W ~ U m ~lOa ~ Q 5 lOt ~ I)f ~-II'lQ'. ~I~ IL ~10 3 ~'iii~_~§~~~1 1 .I I IMII::I Io102I I I I PERCENT ~HONTHs OISCHA~I;S-EllJRLLED CJl-EXCE"f.DEO --i . OECEHBER Lf.OENO I '',, !NlmJ'l1=l. ~TEI FLOW PERIOD~TER YEAR 1961--!1983 --i'lITH-PRO.£CT. ,..,i i C/l-SE E-VI iHARZA-EBASCOiSUSITNAJOINT VENT~~85 __". FIGURE E.2.4.153 (PAGE 1 of 3) --'-' '---'--- to 3 o w ro ~4D ~~~~~~ PERCENT OF t()NTHS OISCHMI 15 EtlJAlLEO m £XCE£lED FEBRlJ1RY ----.- - i- I-- o ~m ~~~~~m ~m PERCENT or !'mTIlS 0IIDmG£15 EllRl.EO m EXCEEOOl tv:lRCH lOiS 2 8 !Jl lk: ~10 4 ... UJ UJ l.L U.... ~lO3 ~ ~ W o 102 j L0 3 ~~;iji~~~~~~1 ~I I IhlI I Io102I I I I I 2ou ~ £r _.jtI t0 4 _ _ .... :tiu u HARZA-EBASCO SU5IT~JOINT VENTURE JIJNE 86 NOTE.FLOW PERIOD hlATER YEAR 1961-1983 FLOW I:lJRAT JON ClflVES BASED ON NmlTHL'(mSCHiRGE SUSlT~RIVER AT IJ)LD ffiEEK 10 6 0 ~--~:=:-1=1u~.W f---f-- Ul ~ a:w -ll.10 4 I---I 1;--w - w I I l.L W m ::J~10 3 W~ i ~ o 10Z I~zb ~•F!o I -II e\!Ib 1M4DliO PERCENT or I'OITllS 010CHlRGE IS EWUEO m·EXCEEDED KAY PERCENT OF HONlHS OISCHARdE ISEtlR.LED (Jr EXCfElEO APRIL LElDIl NATl.RAL WITH-PROJECT.STAGE II CASE E-VI _.-:....-- - -I---I- --.--- "'---- 10 Q ill b b D 50 I 10 5 o isuw UJ a: ~10 4 I- W ~ U m ~10 3 i M o lOt FIGURE 2.4.153 (PAGE 2 of 3) , LO~I lOaI !it ,28.....B "-»I j llf 1-----Il:'i --cr .......---........ Ie to·"'.Ie 10·~-- l-I- l;/I It! I&.I lL U I u...... ~lOa ~~10 3 ~~ ~i !if i hi...:.I o 10'o 102 0 10 III I)4iII I)10 '10 III 10 101 0 10 ZlI Xl 4iII ~GO 10 eo III 100 PERCENT OF tIOOTHS D1SOflfa:15 Ell.R.L.ED (fi EXl'EEDED PERCENT IF tOfrHS DIf£1ilRGE IS Ell.R.lEO ~EllCEELlD .Ah i .ll.Ytaliii106 0 0 lj ~ U i""oo.i U -LIJ W In It) 0:----~0: LIJ ~W Q.La·It 10· t;j I-W ~1IJ lL U ,U m ..IIIqlOaq 10 3 ~~~i lrl I &i...i ... o 10'o 10' ~~IOi He 01 §CHARJE is ~Q.R.L.ED (fiG EXC£~DED II P£Ri:a,r ~POi ~D1~IS'tm..l\O ORO EXC£EDED I II ALO..6TI LElJEtil SEPT~Ii·..I I NRT~~ NOTE.FLllW PER100~TER VEM 1951 1 1963 ....:._...:..- -WIITH-PRO.£CT.SHU II FLOW lJJRAT10N ClRVES ..•I CASE E-VI .BA5EEI ON MONTHLY mSCrnRGE t*lRZR..£8A5CO SUSITNA .J]INT VENTLJE ..ua::86 SUSITNA RIVER Al GOLD CREEK I . FIGURE E.2A.153 (PAGE 3 of 3) -"-"-- L..-_ 10" Loll -- ---_.i7------c--i-- -------------- -I----::: -- I b b 60 llll ~III !II l t--- lOO~iiiii51 ~~~ti~~~~_f'~~lOSt ~ I I I I o 103 I I I I I I I o w m ~~~m ~E E W PERCENT Of I1CNTHS DI9:lmGE IS EllR..lED (R EXCEHIO IIlVEtHR PERCENT OF tOlTHS OIOCHMGE IS E£UlLlED OR EXCEEDED JAt.a.m'1 10 6 o "5uw Ul It W 0 5n.1 t:. ~ u lD ~10 4 i hio 103 u... ~10 4 --- ~~.,. . . . . hi r---- - 1--. -----f------ 10 D II II III 1 I-I I I I I I I I I I PERCENT Of HONOO DISCHAfa:IS ElUlLLEO t:R EXCEEDED OECEHBER LEGEND o w m ~~~~~E ~~ PERCENT OF IOlHlS OISCI4iIn IS EIUlLLED t:R EXCEElEO OCTOt£R Itou ~lo'~----~~iii~~~~~~~til 1-u. ~-.J--..J._--r-__cd31-'-!to 4 _ LU ~-~t- U ~IoLOiI I I I I I I I I I (Jzo ~ (J) n:: It to 1I f- LU LU U. U lD ~L0 4 ~n:: ~ blo lOa NOTE.FLDW P£RlOO HAlER YEAR 1961-1983 HARlR-EBASCO SUSITNA .JO INT VENTURE JLlNE 85 NRTlJRAL WITH-PROJECT.STAGE II CASE E-VI FLOIo-J [lJRATJOU C~VE5 BfI5ED ON NONTHL Y DlSCtJlRGE SUSlT~RIVER AT SLt5HII'£ FIGURE 2.4.154 (PAGE 1 of 3) 100"E==t=== -I I I I I I Q 10 3 I I I I I ' ~ ~1O'~~~ii~!~~~E'~ "=l u ~-=-<~•-+-L...!~UIO ....._"-,o ~t-:,r-,I Il:d ~_'I 10 4.Ja-• I-- ~L',+---,-II -,I -t----t--=.., 10 8 I ,. 'I ,I I I o 10'1 I I I I II, ~ ~~ lr ::;::::l~~lO'_ _~ J.I I-•ltl tLL U... ~ ~ ~ Iii FLO\.![JJRAT ION ClflVES BASED ON 110NTHLY D[SCt-J:lROE SUSITNA R1VER AT SWSHH£ ~~~~~~~~~~ PERCENT Of t1OO'HS 01 Sl'MCE IS EOOLlED OR EXCEEOOl "RY Q ~m m ~~•~•m ~ PERCENT ~,tlMHS OIS::~IS El'JI.R.l£D m EXCEHl:D HAllCH t---f--Ir--t---i--t--+---t---t-.t= IOi t~~Ik:;~I~j~tjlt~r=j=tjII I I I I I I --1 __--1 - = 10 5 -==1 --~~_;..;=.::- !--- - . J-.;-----'-_-::::--rs.:::;:I 10 4 .! Q ~uw III 0::1IJn. I-w W II.. U-tIl ::Ju. ~-j i -4 bi-[J o ~.m ~,~9 1m ~.'•~ PERCENT ~.IIJNTHS DISCOOIU:IS EWI.l.ED OR EmEIED FERmY 10'I o t5uw Ul~10I1\TI~i~~~~H~~~~tiw LL II----ll---+--+-+---I----ll---+--+-+----lu-~ '-:!10 4 ~; ~- Irl I I I -- a 10 .+-'--I---+--+--I---ff-+-+--I---+--+----l I18EQUALLEDOREXCEEDEDR~IL;~OENO I I NATURAL NOTE.FLIJoI .P£RICIJ WATER YEAR 1961- 1 198,',3 _•..:...- -HITH-PRn£Cf,STAGE II .',I CASE E-VI HFlRZA-EBASCO SUSITNii "x]INT VENT~.u£86 FIGURE E.2.4.154 (PAGE 2 of 3) "--- '--- I I -+-1 I I I I --i--I-- o w m ~~~GO 70 GO GO 00 PERCENT IF IDHHS OI9:HARGE IS E(lJUEO ~EXCf.E{J"D .RY )Oil .1 -IIi::t::10 ...__...1. r 1O~~~ 10 3 I I I I I I I I I I I LOG ~--t--5108u 11l llj_. Q:Q:: If to'~..."-;::-.....m .w--I"""""---Wu.---II. U U....~ ~<g I..!La ~u uJ w L')_.--()n:0:: ~~ i1l lrl n tol 0 0 10 Zll :lD IQ Sl IlO 70 GO 90 llIl PERCENT IF ~lIiS OISCHAfU IS EllJAlL£O rn EXCEEDED JlJ'f: PERCENT Of !'mTIS 010CtmGE IS EWlLL.ED ~EXC£E~O SEPTEtI£R -:::: - o-r---" --..- '"'::: f-- '0 m D GO Iitl 0 I 1 10 6 o 5 kl Ul Il~)05 rww II. U 01 ~10 4 W ~ ~ bio )01 PE~NT OF IIONTHs DISCHAroE IS ElUlU.EO rn EXCEEDED FlUGL6T LE~~ --........ 10 III so I 10 & o b W Ul fr~10 5 ti W 4- U m ~10· i trl o 103 I-,OTE.FL£l.l PERIOD WATER YEAR 1961-1ge3 HARVl-EBASCO SUSITNA JOINT VENTURE ~B6 NAT~ WITH-PROJECT.STAGE II CASE E-VI FLO~DURATION CURVES BASED ON NONTHLY DtSCH1ROE: SU5ITt-Il RIVER AT Sl.t4SHIl£ FIGURE E.2.4.154 (PAGE 3 of 3) NArUR~ - - - - -WITH-PRO.£CT.STAGE II CASE E-VI FLOW (lJRATlON ClflVES BASEO ON NONTHL Y OISCI1lRGE SU51Tt-Sl RIVER AT SU5ITNA STAlI()I ~m ~•~~~~~~ PERCENT OF I1CNTHS OlfOmGE ISEGIJUEO OR EllCEEDEO .ntJlR'( l------I I I -1-.I I-f---I-I I 1,-1.;.-,..- o ~m ~c ~~~m m ~ PERCENT ~t'm1l15 OIS:HllRGE IS EOlR.LED OR EXCEEJ:I:D t(JVU1£R 1--....I I I I I r---+---+-- lOa TI~~I~jU~~tj=tj~1=tj:JI I I I I n I I 106~~ lOo~iiiii 10.I --1=--L.t--I 1-...... --_....., I , 10 3 I I I I I I I I I I I ~ ~ ~---~10 5 III -----_---r--1--1--_+__~10.~~~~~~~~~~~~~~~T ~ !II o o ~ tJ ;10't:t~6~~~~~~~~~~§~~~~t;j If u ~ w I.lJ lL U ~... ~u w-I ~ ~ lrl n o ~.m ~.~•~~~~~ PERCENT a:I10NUfi orSCI4llU I EWIl.LED m EXCEE£ED DeniER 10 i : lO'~~il:iiii 6 10 l[JC~-.t-~l---i-1t=tj::t~ 2 B I~III , , _ 0:,I'..,_ I!'10'= --~~H >--1 j l-~I _ _ ::I ~~I:'" u.r--:-I i -I8~I~.1 I -=~~ U 10 >=--',,--,------, ui 1=~:I~~I b{ o fj ~ lJ) Il: UJ a.lOS~~m~~m~~t;j.... LL U ~lo.gi"-r-1--t-i1--,--r-"i ".... til o 10 J -+--'-r--;.-!---+-+----!r--;.'--f---I----'+----lr---1 IlONfHS DISC~IS~Q.R..LED mIDEXCEE£ED I ~CEII£R LEOCNO I I , NOTE.FLQI.j.~IOD WATER YEAR 1961il~3 I-iiRZf:l-EB&lSCO SUS I TNA·J(]INT 'IENTIJ1E:J..t£86•I . FIGURE E.2.4.155 (PAGE 1 of 3) ,-'----, '---- I I I I I I-+-I I I I I I I I .-1----1 I I -1---+-·- 10 II E=3::::::==t:::::-- 51 8 III ~1051~~~_~~~111~~E-lL U §--1--~-_ ___ '-!10· w "-T~ U ~I I I 1 I01031I I I I I I--I I I I I I I I I 2 8m ~105~~~§t~~~~~~~E~illu. u §it-~--~-I-~-~'l~-jl-~-~+-_-t-II~-~'I-~'-'-_~---'~10 ~I W I Ifir M o 10 1 I I I I I I I I I I I 10 & o ~~~~~~~~~~ PERCENT IF IflNTHS 0I5C~15 EWALLED CR EXCECIJED FEBRlJlRY f--- --I-- 1-_,--r---.1------ 10'"l!b III so IPERCENTOfHONHsDlSCHAla:IS EClJAI..LEO CR EXCEEDED o ~m ~~~~~m III ~ PERCENT (F"tmTllS 01 fD\ARf£IS EWlLLEO OR £XC£EIIO mRlli PERCENT Of I'DITllS DI9:HlRC£IS EWlLLEO OR EXCEm'O HAY .----""f------~-:- ._- 1--,,-."---.----f- 1--,~-------"'-...... 10 ~6ll fiQ I I 10 3 ]06 U lD ::l '-!10· 1JJ fa? ~ lrl a oeuw III II:: 1JJ IL 10 5 I- 1JJ W IL LEOft-llAPRIL D 5 ~ III u:: ~10 5 I- W W U. u m ~10· w ~ trlo 101 ~TE.FL~PERIOD WATER YEAR 1951-1983 HARZA-EBA6CO SUSITNA JOINT VENTURE JUNE 85 NATLffi. WITH-PROJECT.STAGE 11 CASE E-VI FLOW DURATION CURVES BASED ON NONTHL Y Dl SCI-JlROESUS\TNA RIVER AT 5USITNA STAll FIGURE E.2.4.155 (PAGE 2 of 3) FLOW DURATION CURVES BASED ON NONTHL Y 0 (SCt-flROE SUSITt-1\R]VER RT SUSITNR STATI~ ~~~~~~~~.~ PERCENT OF ~TIl5 OI!l:1-MGE IS EllRlED OR EXCEEDED SEPTEtt£R I I -4--I I -+I I --+--+-- I I I I I I I I ~-- o m m m ~~00 ~~m ~ PERCENT IF tOlfHS D1~IS Ell.R.LED (Ji EllCHDED Jl.,( 10 6 ~~m ~104t;J;~.~••~ ~I I I~I I I I I o lOil I I I 1011 2 B l)j ~Ii ~----..---10 o 5u IlJ 11I 15 0.1Ol>_ 1--~~- u.. U I .... l:J II. ::!f'~'~;~~~~~*~~~~!~~~~10·1~ ~I I IMI I Io103II~I I I o w m ~~~,m ~u ~~ F1ERCENT IF IIONTHS DISClfmE IS EQA.LED m EXCEElEJ .bE! 10li I I oo lJ W lJl ffi ~I Q.LO ~.:I 1-- W W LL '• u-'~10.I i ~; ~! Iii lOCI 2 8 !H ~tOli~ .- UJUJ LL U ~I I ~LO· t'5a- ~F+17l . o LO!!L I I I I I o 10 J I "10 I lib fJ.o 90 lID, PERCENT OF HONTHS D1~,r EQA.LED m EXCEEIED ~lDll ~i"~II lei NATURAL NOTE.FL~,PER 100 WATER YEAR 195ri3 --- - -~~~HE~~CT.SToc,E n HARZA-EBASCO SUSITNA ..(]INT VENTURE -UE 86 I I FIGURE E.2.4.155 (PAGE 3 of 3) ...8 1+8 ELI41111 STRUT ITYP.) EL.13115 INTAKE GANTRY CRANE IlUJOlEAD GATE GUIIlf: ~INTAKE GATE GUIIlf: SCALE ?16 f FEET iii I ALASKA POWER'AUTHORITY I SUSITNA HYORO£LECTRIC PROJECT DEVil CANYON POWER INTAKE FIGURE E.2.4.156 I ! ,iii iii iii ii'I.G t I I J I 'I t:JIIIIIiIt::::0.0 60 Z49 =36 I 2~ ~12 .. 0 n oJ ~ g -I "Tl I ;;,r LLJ ' ,,1'"~ ~IO ',,'.I';X/~:I~10-1 ~~ a:,;I 'r\I ,\("~ O:w I "'1 \.i I ",........'rtl'I "'"\i ! •t"__:0~":I /',',II .1 I , I '\~ ~G .',I / \V I'I .,"\~S c; ~'..?'LJ"-"-\,iii ...J 1/1 i '\ ~V'!'\.:Jo '!'v O!\ I I I I I I I I 0 MAY .lJN JUl.1 ~bEP I OCT I NlV I DEC I JAN I FEB I "llR I lv>R I u ~mtt.m 'J IT II II I I 15 1 Fl I 1.1.---:'---'-1--'--1~;I I 'I 1 I I r15 - 1881 1962 i .LEOE"il,CASE ....OC81026 -lEVI",CANYON OPERATION W/14IHANA IN STAGE It ALASKA PO~ER AUTHORITY NlTEli. ----'PREDlCTI<O [)JTFLCJl.l TE~ERAT~ INFLOW TEt1PERAT~I I.INTAKE PORT LEVEL I ~T ELEVATION 1.26 FT 1~3~!a~HI 2.INT8KE PORT LEVEL 2 AT ELEVATION 137S FT .<119110 HIa.COt£Vl:ll,VE AT ELEVATI'ON!990 FT IElOl.76 HI <I,'Plu..WAY CREST AT ELEVATION L~O<I FT 1<127.9-4 HI 5.PROPOSED PROJECT I . 6UltrllR I'RO.£CT -,[JrIl£l;It tIJlll. STAGE II:DEVIL CANYON OUTFLOW TEMPERATURE AND ICE GROWTH (E-VI) ~ZA-EBASCQ .JlINT VENTl~E I ! I _.-.'.......·.1.11 .....-I «-oIG-04 FIGURE E.2.4.157 --_......../ '(.<:-..-.; ~~ - L-J'~ .' -- .._., 60 1.1> z~-0-1-1.0 rn-3(> "'-k I ~12-. 1-0.6 i ~ 0_0.0 ~~'][;:;=t=t=$]~I I 15 15 --0 U -C 'J h ,-l,.'1 I ,",r ,'--0 IU ,",.:E IT 10 ,,",",.~!'\.J'l w f'-.10:::>I .'U ... I--,'.11:..!f1I ~\"\. _._---fTl a I \~,I ,3: 0::_.'Uw'\'I"V \'I t .',;\rn "",l :0n.',''A/I "\:E ,I D W r /--l I-(; J ,I- S ~,I. 0 ,,."/l-t-', ..J ~I I ll-t ", ~l-I ,0::J I0 ,~ •,, 0 0 MAY ~J\Jl..Al.Q 6EP OCT NOV DEC .JAN FEB liAR I:lPR 196Z 1963 LEGE"Il1 CAGE •••OC81026 -DEVIL o:\NVON OPERATION WIWATANA IN STAGE J[ALASKR POWER AUTHORITY PREDICTED OUTFLOW TEMPERATURE -------IN=LCW TEMPERATURE SW I tNA Al().E.CT I [JfIltliH io:lu. NOTES.1.INT~PORT LEVEL I AT ELEVATION IA26 FT 1~3~.a~HI STAGE]I DEVIL CANYON 2.INTAKE PORT LEVEL Z AT ELEVATION 1371>1'1 1~19.IO HI OUTFLOW TEMPERATUREil.ClJt£Vl:ll..VE en ELEVATION 990 FT 1301.16 HI AND ICE GROWTH (E-VI)~.SPILLWAY CR£6T AT ELEVATION 1~04 FT (~27.~HI 5.PROPOSED PROJECT HARZA-EBASCO JOINT VENTURE ~tt"lIQQa lU.tfoGlW aD ........-1 4l-01Q-04 FIGURE E.2.4.158 so I .•--z~n ~~-~I~ •I 24 I 0.6-~n '~ - D I 0.0 I • llPIU~' ! 1&•,,iii i ,•,,i •15 o...-J...-" ...hV1•i b'L " . I-I .~.~~n~==~ i I I I I .......II I .. i !I I ~ -Ju:+-i Il.Q ~laP' lJ-i I I ;~I a Jl!..'.I.'~ :J .""Ii '.."~"'i..'~'r IX ..•,.'\I:~ll';1'/AMi'~,.-< '"'.""'"'"• •f II ...'11 I .:'"~...'......."J~"'...'''\I ~~./~ ~V 5 o !- i ,MAY ..l.H ., I lsel,1982III,--~- L£OiND.I~.DC810202 -DEVIL!CRNVDN OPERATION W~T~[NSTAGE]I !.CAliE £-VI S2 NA'flA:U.tON).a LiVELS AT D.C.i ~~.FT -----PREDlCTm OUTFL()IITEI1PERA~ ••- - - • -INFLOI<l TEHPiRA1l.Aii i NQ'T[S •..•••1.INrI:lK£PORT LE~Vl J,n.£VAlION 1<42'6 FT (G.'4.3<t HI2.I,NT~PORT LILVEL 2 ATEL.£IIATION I"l1OFT I~.72 HI i.I.NTAKE PORT LILI/E1.a AT EL.£VATION 137i Fl 14.&.10 111 4.CONEIIALVi AT AlI'ON 9SQ Fl JiDI.'.HI , 5.SPILUlAV CROfT'AT'a£VAT'lON 1404 FT 1427.84 HI ,G.,FOR COMPARISON WllH p,ROPOSED PR,OJECT I FLAfiKR POWER AUTl-tCRlTV UII1II\ma.ECI'I DtIIDi"IIIlfl. STAGE II DEVIL CANYON OUTFLOW TEMPERATURE AND ICE GROWTH (E-VI) l-RUA-Eif\SCO .JJINT VENl~E C:toI_.''''_].8 __I 42-Ql1).04 FIGURE E.2.4.159 ,., ............... GO 1.6-I ....z ...~:l~~... .....36 '']k 0.6 -~lZ ..':i:.... -0 0.0 '"""f-L.£>,[~..!!!l!.1IliIfllIlll'lI IIIi IiiIlIIIIIIIIIIIIIIII I !L.£ViL r •II WlI¥&MWM •• • I.EVEL :.••11II ~ ~-~~- ItPIUUIlY -' 15 15 -~U ~J ..•-f 1-"I I.I r, ~W I ,I'•, 15 10 ,',..J\t ;""trl A r ....10 "-I ~j,'Wl:J11J ,,--V "ITlaI:J: 0:: "It I ,\'I 1 ,',J '\~w "0-I 1/.1 '"\'£"I •D W I •-f ...Ii I r .r,~s ~•./'-~.1/'I ;~I \I LL I "•,-----""'...I ,0flII,"------... 0 ",~0 HAV ~.u.~6£P ocr NOV DEC J'lH FEB 14M APR 1982 1983 L£ClEND I a:l6&:.DC8I02Q2 -I::&:VIL CANYON OPERATION w/~rANA tN STAGE:n:FLA5KA PO~ER AUTHORl TVCA6EE-Vl G2 NA~CD~.a LEVEL6 AT D.C.DA~N-60.FT ~OICTEO OlITFLo.I TEKPERAnJIL lIUil rNA FIlO..ECf I-- ----.I NFI...QW TlLlRRAllJRIL IMlWt I'IlDQ. NOTE&.t.INTRKk PORT L&:IIlOL t AT E1.E\/ATION 1426 FT 1434 ,i4 HI STAGE II DEVIL CANYON 2.tNTAKIO PORT LEVlLI..2 AT [LEI/AllON IAOO FT I 42S .72 "I OUTFLOW TEMPERATUREiJ.INTAI<E PORT LEva a Al aiVAllON 1a76 FT 1419.10 I'll AND ICE GROWTH (E-VI)4.CONE I/~I/£AT &u:VAlION 9SO FT liD""HIIi.5PIUJ.IAV CREliT QT ELEVATION 140.4 Fl 1<427.94 "'I ~BA6CO JOINT VEN1~ES.FOR COMPARISON WITH PROPOSED PROJECT _.IU.__111I --I 42-1:110-04 FIGURE E.2.4.160 I u -r-I !I IIIIIB •-I ~I I '1,,[lYI ... ! 'I I _0 ! I ,• ~lU)6EP 19BI ~-+-- i 1962 ! LEOENO·cAsE.!...OC8102T -OEV,IL CANYON OPERATlONW/I,lATRNA IN STAGE]I STIIDE 2 ---9 FT ~N . ------'P~OICTED OUTFLQI.!rSMPE.RATlJRE I t-E"LOW TEMPERATURE .I I I.IOTEG.1.IN~AKE PORl LEVEL llAT 'EU:VATION 142S H 14Ci-4.3"111 2.INTAKE PORT LEVEL 2 AT [ELEVATION 1376 Fl 1"19.10 "II 3.:CQf£VALVE crr ELEVAliON 990FT [301.75111 , ...SPILLWAY CREST AT EU£VATION 1404 FT 1427.94 HI 5.FOR COMPARISON WITH PROPOSEO PROJECT . .,.!•I I . 1 ALASKA PO~ER RUTHoR1TY st.filrNCI 1'fIO.£C1"I 0\'ll£$I11'OlO. STAGE II DEVIL CANYON OUTFLOW TEMPERATURE AND ICE GROWTH (E-VI) I-mZA-EBASCO JOINT VEtlllJlE tMltJdl.h..1.I"I2'"I'"""""".-1 4Z-01G-04 FIGURE E.2.4.161 -------_.~•..._~-".~"._~"_..~~-~~_."-~-~ .---_.~.~-~----_.~._" ~--~-_._.----_.~-----,~-.~- ;0 1.6--..Z"8 ()....'-1.0 rfl-!lEI ,..-~I -0.5 -ef 12 -'.3: ~ -0_0_0 L£\IEL I .-~• uI LEIIEL Z ••II ~----,...-----I- !----"(1';-- aH:VA..Yf.-.---lPll1.J.lR't 15 15 -.----------r----'--~U -----,I --l------_.-"I '-,:.r,.e----,..,,....A Q w ..::£rr 10 ,fir :;'\"fiJ A f'-.10 :l ,,"\.--l l-I/-I "---f----fTl I ~JV ,'"'II ""-3:CI h,"'1Ja: '-.\/1 \-1------ W "h I 1 ,.I,I '\n1a.,""ft/t'""\-----:u ::£.I :D,-lW------ I-I; ,J ',. 6 ~, ,../~.II'I ~.I...J " I U.I II , ~l-I ,(I:J ,.--0 1 .J ,I , 0 0 I1RY ..uJ ..u.QLG 6EP OCT "lOV D£C .JAN Fro HAR APQ 1982 1963 1.~IIlJI CASE ....OC8102T -[XVII.CQNYON OPERA"ION ~IWR1~A IN STAGE:U:ALASKA PO~ER AUTHORITYGTRO£2 ---9 FT IJRAhlOOUNPREDICTEDOUTFLOWTEMPERATURE &um~PRO..EtT I-------I NFLlJ.I TEI1P£RR1URE OfJlI:Sl1 I1IJl£L NOTES.1.INTAKE PORT LEVEL I AT ELEVATION 1426 FT 1434 34 HI STAGE II DEVIL CANYON 2_INTAKE pQRi LEVEL 2 AT ELEVRTION 1376 FT 1419 10 M)OUTFLOW TEMPERATURE3.CONE:VALVE R1 EL£VRlION 990 F1 130 I .76 H I AND ICE GROWTH (E-VI)4.SPILLWAY ~6T AT EL£VATION 1404 FT (427.94 HI /5.FOR COM PARISON WITH PROPOSED PROJECT HARZA-EBRSCO JOINT VENTURE t"tltllU1.1l..L1l-Q1.II"......._I 4l-010-04 FIGURE E.2.4.162 I 11-• i iii ;1 iii iI iii i I IS o I ~I ...~ I I' !U.. :I H II I •-~'tU]I GEP , u I .'i i w :'I ],t'o ..,,'0,,'• ,C~•,rI-J T,"~-....cr •"".,'~~ "'~• •,{.;C,'"'""""'"r:r ,I'"I ,.,I'~~,,,,,I .".0 W ..I'' "~....~,'",'II ' •~"'6-'}I'~•0... -'"a~~IJ""..~~ u''/'" !;LY ...~'" o ' -.- o I I1llY I JJN -,-'Jl 1981 i I 1982 i LEGEr-.o,CAbE ••~OC8102U -DEVIL ;C~ON O~TI.ON I-IIWAT~A ,IN STAGEDJt ----"QED!:::rEO OUTFLo.J TEMPE;RATUl'lE: -------r'~~L~\J TE;I1PERI::rn.J1E ,i I·1 .1"lOTE6.I.I "TAI<E PORT LEvEL 1 AT IELE,VAT ION 1"l2G F1 I 4a4.a4 HI 2.INTOI<E PORT LEVEL :z 1:11 EL£.VI:ITION 1376 I=T 1419.10 HI 3.CC~V~LVE QT E~EvQTION 990 F1 1301.16 HI ~:~6~'-~~~;A~~g~~JT~~~~g;J~~D ~~g:c.tT1 IA27.~HI I ALRSKA PO~ER AUTHORITY SUit rNA /lIlO..EtT I IJflICitt IUlO.. STAGE JI DEVIL CANYON OUTFLOW TEMPERATURE AND ICE GROWTH (E-I) HARZA-EBASCO JOINT VENTURE ...,._...__.I t ...t .....ILL'''''..'.........""1 4Z-QIG-G4 I FIGURE E.2.4.163 \;---'--'l ,_i__ (-~~- '---- &0 1.6-....z~n..... 100 1.0 fI1-36 ,..~I 1-0.5 -uJ -3:U IZ 'OJ - 0 0.0 UVEL I .m .. ~LEVEL Z •mill .. l-i! U>L VRLYf -lPlUUAY 15 15 -~u-I -f "I "'.r,I ~uJ I I I ,,.!;v-.....,!j 10 I I •",',II Ii'......I/'--r--- 10 -iI1\'--rrJl-f.I ....~";1\fL-\<V '"CI ,-:t rr \.I I I ;R.\VI ,\I,i '\.w ,.'Ill :00-,,-'/'"\D~I I -fWIrI'~., 5 ~I-G .~)~."'I ~- -I I I U.,"I - I-~ I I n::J ,.'OJ0I I I I0 0 HAY ..JUN ..u.AU}GEP ocr t«)V DEC ~FEB "AR APR 1962 1983 LEGEND,CAGE •••OCBI02U -DEVIL CANYON DPER~TION W/WATANA IN STAGE X FLASKA POWER AUTHOO I TV PREDICTED OUTFLOW TEHPERATURE - - - - - - -INFLOW TEJ'lPERATuR£6lIi1 rNA PIIO..ECT I otIlDiIt tIIJlU. NOTES.t.INTAKE PORT LEvEL I AT ELEVATIO~1425 Fl 1434 a4 HI STAGE]I DEVIL CANYON 2.INTAl<E POR"LEVEL 2 AT ELEVATION 1376 F1 1419,10 HI OUTFLOW TEMPERATUREi.CONE vALVE AT ELEVATION 990 F1 1301.75 H I AND ICE GROWTH (E-I)4.GPILL~AY CREST AT EI [VATION \404 ~T 1427.94 HI 5.FOR COMPARISON WITH PROPOSED PROJECT ImZA-EBA6CO .DINT VE.Nl~E CM.I~.ILL'toG._!"......_1 4l-0Io-a.-----_...__.----....._.------._. FIGURE E.2.4.164 I . 200 i •I i Ii I !I "1J 0 I I I II :s: I -~-----I I ,----+--------_I 0........------ i ~~!i -'~m,-ISO ,, -'--!~---_01 .....---Iz z~I _.....-----......-- I !"I -f W ~l-I W ~-f11 1:Ul-,,- 2: 0 ~--t-- t-i@looI Lu>I 0 .i~I t:r t:l..... I,]!ISO I I i I I~JLYE I , I I0I 0 I i I 5 TEMPERATPRE-(CELS1USI .to 15 !I I I I I i A-ASKA POWER AUTHOR1TY CASE I flU'iOCBI02S -OEV~L iCANYON OPERIH10N Io..WI.JATRf\14 IN STAGE E S\Ji I f1lQ PltUtT I lJtRUjtt ICIlO. LEGEKiOI I I DEVIL CANYON RESERVOIR PREDICTED TEMPERATURE PROFILES,TEMPER~TURE PROFILES 1 MAY 1981 I i I CASE E-n STAGE 11 ~-------1 .JUI\E 1981 ! -----L .JULY 1981 i I HMZA-EBASCO JOINT VEtm~E ,c:~tJah lu..lt-II.8 I'.~-.4l'~IQ-Ol IGURE E.2.4.165 .. ~....._----- ---- ~-----------.0' 200 "'D 0 1: ~I I~t -_,0 I ,(fIB ~ 150 "/-I Iz zw.,'" 1 -l W I ,~l-I W j f11I:I IJ)-1---I I /•:t:a .. I-,j I 1--I I@IOOI/•w:>:I -- I0I~/ I I 1-.--I I I D I I ~~It.1 I . ISO I I I I I I I I I I I I LIN: I YRLYE I : I I 0 I I 0 5 10 IS TEHPERATURE-CCELSIUGI ALASKA POWER AUTHORITY CASE •••DC8102S -DEVIL C~NYON OPERATION ~/WATRNA IN STAGE n Sl6HHll I'flO.£CT I DtIl£!ift IllDl. LEGENJ.DEVIL CANYON RESERVOIR PREDICTED TEMPERATuRE PROFILES,TEMPERA TURE PROFILES 1 AUGUST 18B1 CASE E-1ZI.STAGE II --------t SEPTEMBER 19B1 -----t OCTOBER 19B1 I-MZA-EBASCO JOINT VENTLRE QUc.oa.tu."Nna liD ....._I 4-01n46 FIGURE E.2.4.166 15 I (()£ YI'lL."E I 1)fr I I aI 1: I ~aIe ~.... Z --I ~ (TJ U1jI I / I I, j I =±==B I I r j i I I i I" I Ii j j 1 1 I 'II ·C'_--_:- I" I I I i iII i i I 200 •i j I i !I I f p==f=~~:JH=H~=~==*==~==t=~t==t==~==~=]==3==j r R...ASKA PO~ER AUTHm I TY DeVIL CANYON RESERVOIR TEMPERATURE PROFILES CASE E-1ZI.STAGE]I ~lA-EEJl:GCO ..JOINT VENTLRE 6lJ'ilrHA FRO..EtT T DtRC;lt I1IIlO.. CtfICIlI:m.,......1.,131.lUI .ut _I .q..QlQ--04. IN STAGE ]I PREDICTED TEMPERATURE PROFILES: t NOVEMBER'1;98t t ,DECEMBER 1198,l,l ..JRf'.l.lRRY 1982, i C~E •••DCB102S - LEGEI'{)• FIGURE E.2.4.167 '--- , 200 i I Ii I _.- j -n 0 I i J: i!,,-----------------------f---IIlIII 0 I .---I-___-......-..~-'"---150--!1/F IZ z~'--i uJ I ~f- W i I IIIrUl-I I I:E 0 t-i Ij-- @Ioo .I W I >, I I ~i I,I i I t--I 0 !-IuJ ISO I !I -,--f-- !I I I I .eottR..YE !I I 0 I I 0 I I 5 TEMPERAT~E-(CELSIUSI 10 15 i 1 I ALASKA PO~ERAUTHDRITY I CASE"..'OCBIOZS -OEVtL CANYON OPERATION l-lY~RHlNA IN STAGE][SlIiHNA FfllUtT I 0'tR£l;Ii IUlD. I 'i DEVIL CANYON RESERVOIRLEGEl\O I PRED ICTEO TEtj1PE;RATURE PROF 1LES:TEMPERATURE PROFILES 1 HRY 1982 i , CASE E-1ZI STAGE II ~-...---._..-1 .JLJ"-E 1982 I I-----I ..JULY 1982,!I-mlA-EBASCO JOI~r VENllJlE I i I CHICIilIIQ.Iu.lt.Alli Ito ........_,Q-OIG-04 FIGURE E.2.4.169 -.:..b-..-'~ i~~----,--~~----_._----------_.-_. ------....--.-'.--_._--._-----..'-"- 200 I- -u0 -I J: 1------I ~I I f ,..'!mil 0.I f ,..-,.ffiI ISO--)),'Iz z(J) 0:~-f W I ~I--;I 0 uJ ~, ::L ----/,tJ)--, I - T-O 0 ",--J ,..- ~IOO "J." uJ>,. I~,.I ,,..,.,, I-1----1----- I . 0 ,, ~-r--rw• ISO ,, ,I, I _!----- I I I CCN: I I I'VRLVE, I I II,i00 0 5 10 15 TEMPERATLRE-CCELSIUSJ ALASKA POWER AUTHORITY CASE,••DCBI02S -DEVIL CANYON OPERATION W/WATANA IN STAGE]I Sl.61 rNA PllO.£CT I llVll£Stt HIIlIl.. LEGEt-IJo DEVIL CANYON RESERVOIR PREDICTED TEMPERATURE PROFILES,TEMPERA TURE PROFILES 1 AUGUST 1982 CASE E-1lI.STAGE:II .._----_...I SEPTEMBER 1982 -----1 OCTOBER 1982 I-mZA-EBASCO JOINT VEl4T~E tli"l'OQ.tU.'~'.11Q ........-1 4l-01~4 FIGURE E.2.4.170 ALASKA POMR AUTHORITY SlJ$nNA 'fT1lfl(J(\lCUhC PflOJ(Cf SIMULATED SUSITHA RIVER TEMPERATURES RIVER MILE 15D STAGE II ~'~I_.__.\-I - LEGEND SIMULA TED NATURAL TEMPERATURES SIMULATED TEMPERATURE: PHASE 2 OF TWO STAGE PROJECT (FOR COMPARIS( SIMULA TED TEMPERATURE ST AGE II OF PROPOSED PROJECT NOTES: 1.CLIMATOLOGICAL AND HYDROLOGICAL OAT A PERIOD .MAY 1981-SEPT. 1982 INFLOW TEMPERATURE MA TCHING POLICY FOR MULTI-LEVEL INTAKE STAGE 2 OF 3 STAGE PROJECT AVERAGE WEEKLY VALUES E-VI FLOW REQUIREMENTS DEVIL CANYON DRAWDOWN OF 50 FEET-2 lEVELS OF SHUTTERS FIGURE E.2.4.171 ~ .'\I ".\,.' I,, 1.".,"II I",""-I,I''1',,.'"B~•"/'II;,•.,I'I BV~':I ,\.I \t!I.......' •Is "'I./,,, /,',., /,..,..',,,----'*,..,-/' ",-' "--' ,-.. I \1 'I'; ./'"!\"!,\ i\i\ I ,'i', I'',,"\' I "I \~ I ",\'!\, 11 \, \, \•~.I .._--- '",.......... '..- I I i I.I I 1 i ';i MA Y JUN JUL AUG SEPt OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP .\98\II i I 1982 I II'. ! , I'.,, , • I:~, ,In ~c /.,'".'.\,..,.)',Ii ./.",'".', I "'I \I,'~11 ," 'I 'i'~ l l" 4 6 o 2 8 10 12 C D E G R E E S '---' '--- r--·~ L--'_ NOTES: 1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MULTI-LEVEL INTAKE ,3.STAGE 2 OF 3 STAGE PROJECT 4.AVERAGE WEEKLY VALUES 5.E-VI FLOW REQUIREMENTS 6.TEMPERATURES SIMULATED BY SNTEMP FOR PERIOD JANUARY -MARCH SH0 UL0 BE USED WITH CAUTION AS AN ICE COVER MA Y EXIST ON RIVER AND SNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER (SEE RIVER ICE SIMULATIONS) '7.DEVIL CANYON DRAWDOWN OF 50 FEET-2 LEVELS OF SHUTTERS LEGEND SIMULATED NATURAL TEMPERATURES SIMULATED TEMPERATURES PHASE 2 OF TWO STAGE PROJECT (FOR COMPARISON) ·SIMULATED TEMPERATURES STAGE 2 OF PROPOSED PROJECT I ...., •,, ,,~, ,. " " ,'."'....." ,'' " '..',.",.,t '..,"r.••n.'',:r " 'A\',,";,"I """,''"f ',I:•"J ,,'It\'•.J ,~,~""'.'•...r,1 I f r"/,' \ '1..._1 t '.. I ," t '\II \,.I ,// ,1;\/ \I \1"1\1,,"\..",",I.'I'I '...",\"'\I ,""".--"•I',..oJ',"1 ,"I,..I.1 •",.,., , ".I •I'", I I ' ,,I,:\~ ",I '"'J I \,,' I •J •"I ,I !'1 I I J C D E G R E E S MA Y JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1981 1982 FIGURE E.2.4.172 ALASKA POWER AUTHORlTY Sl..DlHA UT[~l()lt(cnuc MlOJECI SIMULATED SUSITHA RIVER TEMPERATURES RIVER NILE 13 D STAGE II....uA._\-------"_:1"-1 - ALASKA POWER AUTHORITY -S\,G1NA ul1_"l.)(lfcnnc rno.-.Ct SIIWLA TED SUSITHA RIVER TE!lPERATURES RIVER MILE 100 ~~I, STAGE II._-_.,-I'- NOTES: 1.CLIMATOLOGICAL AND HYDROLOGICAL DA TA PERIOD MAY 1981-SEPT.·~·· 1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MUL TI-LEVEL INTAKE 3.STAGE 2 OF 3 STAGE PROJECT AVERAGE WEEKLY VALUES E-VI FLOW REQUIREMENTS TEMPERATURES SIMULATED BY SNTEMP FOR PERIOD NOVEMBER-MARCH SHOULD BE USED WITH CAUTION AS AN ICE COVER MAY EXiST ON RIVER AND SNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER(SEE RIVER ICE SIMULATIONS) 7.DEVIL CANYON DRAWDOWN OF 50 FEET-2 LEVELS OF SHUTTERS LEGEND SIMULATED NATURAL TEMPERATURES SIMULATED TEMPERATURES PHASE 2 OF TWO STAGE PROJECT (FOR COMPARISOI -----SIMULATED TEMPERATURES STAGE 2 OF PROPOSED PROJECT •"II',I~'-'.,II I I ~\: I .. I r I 'I, ,~~:J ,t' '''\vl/I ,"'"...-/' "...,," \i.'\~ ;~ 1\1 i II I \1 .'..',i\ Ll.'I', 1\\ ", •, •t•r,,'~ "t ",...... I FIGURE E.2.4.173 ,"1\,'~ / ',h ~ '.....'.~I \ I # .I ~l~.\~ \"Ii ~ I ".i , MAY J~N JUL AUG SE/P IOCl NOV DEC ..J~N FEB MAR APR MAY ..JUN ..JUL AUG SEP ..1981 i !.1982 4 2 e 6 8 te 12 C D E G R E E S NOTES: 1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MULTI-LEVEL INTAKE 3.STAGE 2 OF 3-STAGE PROJECT 4.AVERAGE WEEKLY VALUES 5.E-VI FLOW REQUIREMENTS LEGEND -SIMULATED NATURAL TEMPERATURES ---DEVIL CANYON DRAWDOWN OF 50 FEET,2 LEVELS OF SHUTTERS -PROPOSED PROJECT FOR COMPARISON WITH -----DEVIL CANYON DRAWDOWN OF 9 FEET,2 LEVELS OF SHUTTERS ---DEVIL CANYON DRAWDOWN OF 50 FEET,3 LEVELS.OF SHUTTER~ /r ~,1'.'?',~,I J..~... ,,;'-'/-~"--...I"........-e-"'....:\........If:.::--"',."..."~'''''''-J'-_-:'''''?''''---- re..,,-...\\, \\\, \\\, '\\, \~~, , II II II I I I I I I 1\ I I ,\I I',I:~I':I I'.-:}I'l'•iF"fIlIIII.'!. t J " •\1\ •~.'1',I " ·~ /~ I / D E G R E E S C MA Y JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1981 1982 FIGURE E.2.4.174 AlASKA POWl:R Al1THOAITY SUSIlHA tfT\JnO(UClfbC NlO,KCr SllIULATED SUSITHA RIVER TEUPERATURES RIVER UILE 160 STAGE II ~.:..~I----_oi-I - ALASKA POWER AunlORlTY SU91HA.HY()O(J(uctrnc f"flOJEcr SIMULATED SUSITtlA RIVER TE\.IPERATURE8 RIVER "'llE 130 STAGE II ~=--"::"I.------\-I'-FIGURE E.2.4.175 MA Y JUN JUL AUG Sap IOCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1981 i 1982 NOTES: 12 j A 1.CLIMATOLOGICAL AND I-HYDROLOGICAL OAT A PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE ,e j I •\!~V MATCHING POLICY FOR L a !,',MULTI--LEVEL INTAKE '''...!"'.~I 3.ST AGE 2 OF 3-STAGE \i PROJECT \'".~., D ii',"',\1 '•I f 4.AVERAGE WEEKLY VALUES E 8 1 '1\'\\JtoV 5.E-VI FLOW REQUIREMENTS •'I I \~I ,•.,~. G :-l-....\'\\t,'I ~6.TEMPERATURES SIMULATED R •,r.l,1\\:t •BY SNTEMP FOR PERIOD "",\\i \'' I DECEMBER-MARCH SHOULD E 1\1 ~I \,!"''\\.BE USED WITH CAUTION AS E 6 /''\'~\..AN ICE COVER MAY EXIST " ON RIVER AND SNTEMP S \ DOES NOT SIMULATE J TEMPERATURES UNDER AN \ ICE COVER (SEE RIVER ICE C J/\1 SIMULA TlONS) 4 \,r::!LEGEND \,... I,/---DEVIL CANYON DRAWDOWN OF f 50 FEET,2 LEVELS OF SHUTTEm 2 J 1\!\Jit' -PROPOSED PROJECT I FOR COMPARISON WITH \f\:\ '1 ../-----DEVIL CANYON DRAW DOWN OF jA\_/I'A 9 FEET,2 LEVELS OF SHUTTERS e I ---DEVIL CANYON DRAWDOWN OF \50 FEET,3 LEVELS OF SHUTTEF ._--~'-------' L-.-..-i..-.-- D E G R E E S C NOTES: ClIMA TOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 INFLOW TEMPERATURE MATCHING POLICY FOR MULTI-LEVEL INTAKE STAGE 2 OF 3-ST AGE PROJECT AVERAGE WEEKLY VALUES E-VI FLOW REQUIREMENTS TEMPERATURES SIMULATED BY SNTEMP FOR PERIOD NOVEMBER-APRIL SHOULD BE USED WITH CAUTION AS AN ICE COVER MAY EXIST ON RIVER AND SNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER (SEE RIVER ICE SIMULA TlONS) LEGEND ---DEVIL CANYON DRAWDOWN OF 50 FEET,2 LEVELS OF SHUTTERS -PROPOSED PROJECT FOR COMPARISON WITH -----DEVIL CANYON DRAWDOWN OF 9 FEET,2 LEVELS OF SHUTTERS ---DEVIL CANYON DRAWDOWN OF 50 FEET,3 LEVELS OF SHUTTERi MA Y JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1981 1982 FIGURE E.2.4.176 AlASKA POWER AUnlOlllTY su::;nNA Im_'O(lICIRtC NlO...CJ SIMULATED SUSITNA RIVER TEMPERATURES RIVER MILE 100 STAGE II ~.:..~1. ---'1-I'- .• NOTES: 1.SIMULATIONS WERE MADE FOR FINAL STAGE OF TWO-STAGE PROJECT (SAME AS STAGE Ill) FOR STAGE II ENERGY I /\!DEMANDS AND ILLUSTRATE i / \A ~........"TEMPERATURE DIFFERENCES FOR )(.\/i \WET,DRY AND AVERAGE FLOW i ~"~",+.\CONDITIONS < ..I j .,//)--:~.-\ •..-.'...•,:• •.,'/'I \'..'\'.2.SIMULATIO.NS WERE MADE FOR ,...!.•/r-;.'\.~CASE C FLOW REQUIREMENTS••-'i~.......'.''\.PRIOR TO APPLICANTS .•••\\'.DEVELOPMENT OF CASE E-VI • •\,\..~.OF COMPARISON /'1\1 r\\\ /';!\ \ J V\ /I / -'_1_, / " - . - . -19181 HIGH FLOWr"-'.:>.;7 - ---1917 1 LOW FLOW .0_..--1971 AVERAGE FLOWI' I 2 1'2 o 8 e, 9 10 11 w 7 a::::» I-«6 a:w Q. ~5w I- ~4 «wa:3 I-m 1 5 SUSITNA RIVER TEMPERATURES AT RIVER MILE 130 W AT ANA'AND DEVIL CANYON OPERATING 5045 I IWiA TER WEEK I 40 MAYo~I,' , ,,I,J,UN,E ,I,d~~,l I A,UG,,",~_...,',,-~,',1- 30 35 FIGURE E.2AJ77 '--~~,-.-, ~.._-'--'- I ~L ~_--_I - 2.SIMULATIONS WERE MADE FOR CASE C FLOW REQUIREMENTS PRIOR TO APPLICANTS DEVELOPMENT OF CASE E-VI.THIS DOES NOT AFFECT VALIDITY OF COMPARISON. .. \ NOTE: 1.SIMULATIONS WERE MADE FOR FINAL STAGE OF TW'O STAGE PROJECT (SAME AS STAGE III)FOR STAGE II ENERGY DEMANDS AND ILLUSTRATE"" TEMPERATURE DIFFERENCES FOR "WET,DRY AND AVERAGE FLOW CONDITIONS DOWNSTREAM OF TALKEETNA. WEATHER CONDITIONS 1982 AVERAGE FLOW _.-.-1981 HIGH FLOW - ---1974 LOW FLOW -.._..-1971 AVERAGE FLOW 12 11 10 9 B ~.-A0e,/0 I .-17w/1a: :::)..... «6 .I )a:/w 0- ::E 5w....;//"'-..:. ::E 4 /«w /a:3....en .. 2 5 SUSITNA RIVER TEMPERATURES AT RIVER MILE 84 WATANA AND DEVIL CANYON OPERATING 50 AUG 45 WATER WEEK JULY 40 JUNE 35 MAYoIII I I I I I I--Ii •iii iii I iii I Iii ,iii i I I I • 30 FIGURE E.2.4.178 NOTE: ! SIMULATIONS WERE MADE WITH CASE C F~OW REGIME BEFORE APPLICANT ADOPTED CASE E-VI.THIS DOES NOT AFFECT VALIDITY OIF COMPARISONS BETWEEN DIFFERENT I M,UI,JI-LEVEL INTAKE OPERATING POLICIES 1 ]i.1/'\~·I 1 .,. I y;:~'"\\I..·../il."?\f;;:..~ II !l'"\J.r/'----'/~l \~,):~'J ,::-.YI '\l",,:::::.:J(\I.'I' .../.I " r'//,./.."f NA~UIRAL I CA~E C INFLOW TEM~ERATURE MATCHING ---CA~E C WARMEST W~TER MULTI-LEVEL INTAKE i •. _...-CAFe;C WARMEST W ~TER EL.1800 &MUL TI-LEV~L INTAKE _..-CA~e;C WARMEST W~TER HIGH INTAKE TO D.C.CONE VALV.ES I I ,]! i !i !I 13 12 1 1 10 9-0 0 8-wa:7:J l- e(6a:w 0.. ~5 w I- 4 3 2 1 0 2 MAY JUNE SEPT.OCT. SIMULA TiED TEMPERATURES AT RIVER MILE 130 .V,aJR]IOUS INTAKE OPERATING POLICIES FIGURE E.2.4.179 ._--"'.]ii:--; ----'-.-._----~..•---~---_._---_._.--_._...•--_..__.--------..- NOTE: SIMULATIONS WERE MADE WITH CASE C FLOW REGIME BEFORE APPLICANT ADOPTED CASE E-VI.THIS DOES NOT AFFECT VALIDITY OF COMPARISONS BETWEEN DIFFERENT MULTi-LEVEL INTAKE OPERATING POLICIES NATURAL CASE C INFLOW TEMPERATURE MATCHING CASE C WARMEST WATER MULTI-LEVEL INTAKE CASE C WARMEST WATER EL.1800 &MULTI-lEVEL INTAKE \ CASE C WARMEST WATER HIGH INTAKE TO D.C.CONE VALVES -".- '\ '\/~\.//"~~;c.:~~,:11"\.,.,j;'\,.1 \ f ~\//.\~1A1I .~." .~.\ ,~.\~/\~~\ -57 " 13 12 1 1 10 9-0 80-UJ 7a:: :::> I- 6«a:: UJa.5~w I-4 3 2 1 o f i ,iii iii Iii Iii iii 1 iii i l i,i I 2 9 162330 6 13 2027 4 11 1a 25 1 8 1522 29 5 12 19 26 4 11 18 25 OCT.SEPT.JUNE JULY AUGUST 1982 SIMULATED TEMPERATURES AT RIVER MILE 130 VARIOUS INTAKE OPERATING POLICIES MAY FIGURE E.2.4.180 5.DEVIL CANYON DRAWDOWN OF 50 FEET - 2 LEVELS OF SHUTTERS LEGEND -SIMULATED NATURAL TEMPERATURES -----SIMULATED TEMPERATURES E-VI FLOW REQUIREMENTS PROPOSED PROJECT ---SIMULATED TEMPERATURES E-I FLOW REQUIREMENTS (FOR COMPARISON) 4.AVERAGE WEEKLY VALUES NOTES: 1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MUL TI-LEVEL INTAKE 3.STAGE 2 OF 3 STAGE PROJECT ., J I I\~,,,,,,t· I ,,,, ,.......''I "I "-J " ,I ',I I': It,," I"I'I I t ," ",I ":1'I •I"at'I~•I II ,I d ,I II "II ,. ,'1 ,:,,"', "",-?...~....':."~'7 '-_~i .."",,_--/".~---..._-.., , I~' l't, .- I' i, I 8 .- 1 "I' I I , I•I , ,I , I I , I,,",I , I'I ,~I I I I I ,i"I , I\'I , I,i V,~~ u I / " fa 4 2 6 8 te t2 C D E G R E E S MA Y JfjN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ,i i 1981 1982 FIGURE E.2.4.161 ALASKA POWER AUTHORITY SUSIlH>\IfroAoHre'nIC F"AOJEcr SIMULATED SUSITNA RIVER TEMPERATURES RIVEn MILE 1l1D STAGE II ~.:..~I_-----1-1-- At.A8J(A POWER AUTIlOf11TY su;rtNA 'fTl)f\Q{l(CfRtC MlO.LC' SUIULATI!D 8USITNA R'VER TE&lPERATURI!S RIVI!R &I.LE t3D STAGE II ~.:..~I ---'1-I'- 5.TEMPERATURES SIMULATED BY SNTEMP FOR PERIOD DECEMBER -MARCH SHOULD BE USED WITH CAUTION AS AN ICE COVEA MAY EXIST ON RIVER AND SNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER 6.DEVIL CANYON DRAWDOWN OF 50 FEET- 2 LEVELS OF SHUTTERS LEGEND __SIMULATED NATURAL TEMPERATURES -----SIMULATED TEMPERATURES E-VI FLOW REQUIREMENTS PROPOSED PROJECT ---SIMULATED TEMPERATURES E-I FLOW REQUIREMENTS (FOR COMPARISON) NOTES: 1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT1982 2.INFLOW TEMPERATURE MA TCHING POLICY FOR MULTI-LEVEL INTAKE 3.STAGE 2 OF 3 STAGE PROJECT 4.AVERAGE WEEKLY VALUES ',1'" I ' "\1-,,.......I",,\"I .r"-?".,,"\~I "I ',..,", 1/1 "',/I I " "I I " :J " •,'•,I 3 'J u :1 '"/.<J l ,~. II I l~~J l'...J I ,I I \Ij "/''\.of'"•'-.. •., I'·'·','.'_I,1\,"I , I FIGURE E.2.4.182 ( •I :, I I' I ", , • I , " , I , I''.,,'"' , Ir.,I ,I , I I '.\J ". MA Y JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1981 1982 C D E G R E E S AlA8IV.,POWER AUTHORITY SUSflNA tfyonD£l£ctRtC mo.a;CI S,MUlA TED SUs.T"A R'VER TEMPERATURES R'VER MilE 100 STAGE II ~;..~l ---;'10-1-- 5.TEMPERATURES SIMULATED BY SNTEMP FOR PERIOD NOVEMBER-MARCH SHOULD BE USED WITH CAUTiON AS AN ICE COVER MAY EXIST ON RIVER AND SNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER (SEE RIVER ICE SIMULATIONS) LEGEND --SIMULATED NATURAL TEMPERATURES -----SIMULATED TEMPERATURES E-VI FLOW REQUIREMENTS PROPOSED PROJECT ---SIMULATED TEMPERATURES E-I FLOW REQUIREMENTS' (FOR.COMP ARISON) NOTES: 1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MULTI-LEVEL INTAKE 3.STAGE 2 OF 3 ,STAGE PROJECT ...4.AVERAGE WEEKLY VALUES FIGURE E.2.4.183 . /'!".."~,,\/\J1':~I.,t ',\,",,,,., ,rl'I ,I \''","'I ' •"•\'f.,,. :1 "., :1 I' "·:1iI\. J ".,.V t' ~'III,\If 1/" ( • I"I ., I • ,.,.,, ~I , f 'l', . '.,. I I 'I,. ,•'I.N ~ I . • •i MA Y UUN JUL AUG SEP:OCT NOV DEC J\«\N FEB MAR APR MAY JUN JUL AUG SEPi', I 1981 i 1982 I I 4 2 e 6 8 te t2 c D E G R E E S '~---~-~'\ ~-----..,' 150-.--------------------------------, 90 -+-----.------,.------,-------r-----.-------1 14 12 APRMAR 3/ FEBJAN ......:\.:\.....",..#,:.... ."...rI .",.,.":........;.-.'...-I ...:r .~....~...\...~....J ~.~••,,,,....:...~......~ D ••,....~.~,.~\ •• DEC REFERENCE LINE' NOV ,-3000 cfs OPEN WATER SURFACE PROFILE- I I ......J r...........-'......X ,,-....I'..~'-~.",.,..............;,;""""'/..~~~\I..,/".......il""'""~, ~.............I ..filii" ~• I I I LU (,!J <cI- en 10a:: LU -8>1--LUa::LU 6 :E!:!: ::J 4:E X 2<c :E 0 100 140 Zo ~_130 u LU0=..J:E I-a::120 ZLU 0>a::-u.E:,110 LUu I j 100 110 120 RIVER MILE 130 140 i'...rq,._..~..~".*~,I \ """..-..-".,.'~~ "I I I ~-10-I- ..J LU 8 <c:f I--6OenI-en :E LU 4 ::JZ :E t5 2xi<c I-0 :E 100 110 120 RIVER MILE 130 140 NOTES: 1.STAGE II SIMULATION BASED ON CASE E-VI FLOWS,STAGE Jr ENERGY DEMAND,INFLOW MATCHING TEMPERATURE POLICY 2.NATURAL CONDITIONS NOT SIMULATED UPSTREAM OF RM 140. 3.3000 cfs REPRESENTS TYPICAL WINTER FLOW UNDER NATURAL CONDITIONS LEGEND: ......_-NATURAL CONDITIONS ............STAGE II OPERATING III NATURAL SLOUGH BERM ELEVATION SEE TABLE E.2.4.23 FIGURE E.2.4..184 'SIMULA TED RIVER ICE CONDITIONS STAGE.ILvs.NATURAL '1981-82 WEATHER CONDITIONS CASE E-VI FLOWS ' 150-,..---------------~-------------, 140 Zo i=130~­U W0=...J:E I-c::120 Zw 0>c::-u.f:110 w S:2 100 ! \ ,I 1 1 90..;.'+---N-O-V---r---D-E-C---r---:-JA-::-N:-:--r---=F=EB::--"'---~M:::-A;;R-I--A;;P~R;-' 140130 2/ 120 RIVER MILE 110 REFERENCE LINE: 100 r-3000 cfs OPEN WATER SURFACE PROFILE·- 14 12 10 , 8 AJ "-.......11i""4 ....~'".4 "'..............::..--- 6 ..,V i"~~~•IlIII'"'"4 1\~I .-...I""2 1 'IIn T -"-._..__.._...._--I~--"~----"''-=-t w t.' ~en c::w_ >1--wc::w :E!:::.:::> :E X ~ :E 140130 LEGEND: ---CASE E=I FLOWS .•,.....;.~c:8SE E:-:VJ fl..QWS II ..NATURAL SLOUGH BERM ELEVATION (SEE TABLE E.2.4.24) 120 RIVER MILE 110 . ""-~.~/. I-'~v:",:"."~~!--.--t--.J'lII.. ~------- I I I NOTES: 1.SIMULATIONS BASED ON STAGE IIENEHGY DEMAND,INFLOW MATCHING TEMPER- ATUHEPOL ICy.---------------- 2.3000 cfs REPRESENTS TYPICAL WINTER FLOW UNDER NATURAL CONDITIONS AT FREEZE UP. FIGURE E.2.4.185 SIMULATED RIVER ICE CONDITIONS I 1 STAGE II 1981;';;'S2WEATHERCONDITIONS :)'. CASE E=I vs.CASE E-VB -'-'.~"-'-~-----_._,~ -~--..~- ,--.:,._.--.-'~-'.~'~----'',,,.-- m 1 fF4§St-tzItEi It3 300 300 t----.J dZ5tJ Z5Ur-,,,'.".."200~•200 ..,,'.~"•••,t,•,'"U.'."O'IOM •. u',".,,."-f ,ISO~.'.I ,~'I /,,;:::,, ~ISO ,"""~,I .\..1\'If ,,n,~),.11\.\-'\,•~0-, 11 • ( \""""'1~100 ,~"~./" ,\L "I ,un'"•I},H'\I F \...,,,,1ft I .'I 11.1 l (V..-I--.~II 0-3M III rh.A'\'""\f "I \- "~'-.I-/\,J "1 ''.,3 SO(;)50 '-.......r -.......,/,.',,"......."-I i .........J ,..<I r-"'-l .'\I 0 ---_......--.----.0 NOV DEC J:lN FES MAR APR "~y JUN JlA.lUl liEP OCT 1981 1982 LECENDI fLASKA POl.JER RUTHeRl TY PREDICTEDuOUTFLDW SUSP.SED.CONCENTRATION IHG/LI SlIII fNR RlOJECl I (Ml£J;It IUlQ. ...------INFLOW SUSP.SED.~CENTRATION (MOIL I (0-3 MICRONS ONLY)WATANA RESeRVOIR -" OUTflOW SUSPENDED SOLIDS NOTES I STAGE :II AVERAGE YEAR 1.sse I NFLOW VALUES REPRESENT THE 0-3 MICRON R~GE AND RRE l-JlRZA-EBASCO .JJINT VEN1~E is/.OF T55 ~tt·.h ILL'''''''II .......-1 q-olO-lIi FIGURE E.2.4.186 , L.£Y£L 1~t:"'-·.~I I I t~-i I ~i~-;- '300 .J d2tiO I I I:I I I :I I I I I I ~ 1: I ~:1 R I I .-.200~ 't I m I,It,•"f I I •1-0 f •,II • T I ",",I -1 en .,'.I ..'ill I I I m , """,,,.,:1 0-10 M I 150 0 •"\1 ,I I ...1 I I I 'l\'I I S I 'T )I III '\.J ~I I t> 2dEJJP4t*@fir$2d'OO~ ~~±4~.,V ::p:l=+=~·'\f,:r ij l tSO t ;-----r L-..£.. ,•I L...Le.I J 0 !-w 'I n_1 I ~I KAY L~I .u...--'AUG ,6EP H DCl 1982 ~ 1981 I o i:,-"1-L-=-o.I_----1-""'t --1-~-'J )I J I-....-J ----.-NOV -occ I,1.R4 I ....I'- I I I I so -I I 15f39 <I n==n==+=+=::r1l~0-3 ""1 i ,,1,I 1 I- ,roo +I I I I I -t-I "I ;'.I I 0- ~100 -I I I I I I 'I " I I"(f-Hll,""-~,,,.In·-- ~ U {jIISO LECE~D) NOTES. I PREDICTED OU:TFt£J4 1NFLOW SUSP'I S~D. I I ISUSP.!SED.CONEENTRATrON IMG/LI CONCENTRATION AT WAT~(MOIL 1;(0-3 M) I ALASKA POWER AUTHORITY 6lSlrHA I'flO..I:CT I ~HIJlO. DEVIL CANYON OUTFLOW (0-10) SUSPENDED SOLIDS STAGE II AVERAGE YEAR kSSC INFLOW VA~UE~REPRESENT THE 0-3 MICRON RANGE AND,ARE1S%OF TSS.~ZA-EBASCO J)I NT VENl ~E ~H)~_.tu.1NI...I'D ~-I 41:-010-0& FIGURE E.2.4.187 / '-~---i. CROSS'SECTION LOCATIONS SAMPLE LOCATION (APPROXIMATE) 9.QUARRY SITE A IS A PROPOSED SOURCE OF ROCK FILL FOR STAGE ill CONSTRUCTION. ----MAPPED LIMIT OF BORROW SITE NOTES I.SELECTED TYPICAL SECTIONS SHOWN. 2.VERTICAL SCALE 4 TIMES HORIZONTAL SCALE. 3.50 FOOT CONTOURS REPRODUCED FROM REFERENCEO BASE MAP. 4.CONTOUR INTERVAL 50 FEET 5.QUARRY SITE LIMITS BASED ON PRELIMINARY MAPPING AND IS SUBJECT TO RESULTS OF OESIGN EXPLORATIONS. 6.INTERPRETATION BASED ON AIR PHOTO INTERPRETATION AND RECONNAISSANCE,AND SURFICIAL GEOLOGY MAPPING. 7.PHOTO TAKEN AUGUST,19BI. B.LITHOLOGY AND CONTACTS WITHIN QUARRY A REQUIRE FUTURE DELINEATION OTHER D D tf r::.'·~'~~1 SUSPECTED FRACTURE ZONE WITH LOCAL SHEARING ~BEDROCK OUTCROP E0l:~\r:!SHEAR ZONE.\~ LEGEND STRUCTURE CONTACTS SECTION D-D SECTION G -G PORPHYRY a DIORITE O._AZIMUTH -----Jo--IBO' OF SECTION i oJ AZIMUTH ~IBO' :OF SECTION 0'~~~40~0;;;;;;;;;;B;;i00 FEETe~I ANDESITE ANDESITE:POR PHYRY a DIORITE SCALE QUARRY SITE t I I ./_____.----i I________________,~-------..J I 2600 2300 zo;: ~2400 ~ ...w~2500 / ... ... -: 2600 ...w 2500wu. z 0;: ~2400~w 2300 .. .- .-/ ... / ..... / / /' ..-..-.-- /... i /. ) :' ..-" (__~'~'~"'1.._. "..~:o~.::~·::-; "-\,"-, '~==:/ ......-....._-.. X 2404 WATANA QUARRY SITE A PLAN AND SECTIONS ..-2200 \...._.-,j.-'\....) ....._-_." ........... .............._-.•.._._-..2150 '" ""-"'¥"••••.---..............._..../ ......,2100··.-'..__.--'/,.----:.._.... 2050.__,;'-'''-....---....,._,,--.... ,. FIGURE E.2 .4.188 o o 0........... w 1 .i:::l ...,._-:-r--.....-/ T -'~...., QUARRY A PLAN :: o °0.. lO...... w ....... ,~., •.... ........ .....---......--...._. "'"" , \ \. ",........ ". \. ooo. '";!. w \ r 1·- ....., .....~, .\ \...., REFERENCE:I"'200'TOPOGRAPHY 197B COE.(NPASI SHEET B/26, I"'400'TOPOGRAPHY 19BI AAI.(NPASl SHEET I OF I,FLT.NO.4-4. N 3,226,000 -- N 3.224,000 -- N 3,220,000 -- N 3,222.000-- N 3.2IB,OOO-.- u u J ,] J ] J J J 1 J J 1 1 _J J Lf) r--.,.-..,.......,...-,..--..---,-,........,.--r---r-....,..---r-,.......,-............,...--ro--r-,--r CO Lf) UJ LD LD 0 LD 0 0 0 0 0 0 LJ)0 LJ)0 (\J --0 0 (\J N N N (\J (1':)NOll~A3l3 3J~~~nS Cj31~M enen ~ (II w wa: ::l <l' u. ~ W CJ <C I- (J) >- ...Jc: <C W.. 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['CC<c WI- C/)C/) Wa:w LJ)zl-to 0:5>-_.. Zl <c W 0 () 1O --I->W C L.n L.n o L.n o ..-..- C\I <I:t C\I W Wa: ::> (!' u. tn ,........,...-...,...-t-_........-..,.........-.....-.,...-.....-..,...................-.,..--r--r...--,--r-OJ ~1 C\l ~] w Ll l ] ] 11 L ] j J 1 ,] ,I ,I ;J l 1 J o 0o0o0'o 0 N -MOi.:llnO ~IaA~3S3~ ooaom (S.:I:)) --lliil·'l"'·I·JJJ;j~b~tt~~,::§iffJ'J~ ooooo ~ D I S C H A R G E I N C F S 80 70 60 50 40 30 20 10 ---------------....- 1'\,I''-,__________-/~~~C~~~':~~ LEGEND NATURAL CONDITION FLOWS FOR PHASE 2 OF 2-STAGE PROJECT FLOWS FOR STAGE 3 OF 3-STAGE PROJECT o I I ----I I I-~l----l JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC MONTH ALASKA POWER AUTHORITY S\JSflNA tiYonOElECfRlC PROJECT AV ERA GEW EEK[YsiJsf=T;;N:::A::":;:R""'IV~E-R~­ FLOWS AT GOL:D CREEK FOR 1964 HYDROLOGY LATE STAGE III I E-~I FLOW REQUIREMENTS 1UAU·........eo -=.=-:::::--I~·1_ FIGURE E.2.4.213 I I , •.LEGEND NATURAL CONDITION FLOWS FOR PHASE 2 OF 2-STAGE PROJECT FLOWS FOR STAGE 3 OF 3-STAGE PROJECT50 THOUSANDS 60 40 /----~ ""-...------~, ALASKA POWER AUTHORITY susnH"HYOnOElECfRIC PROJECT AVERAGE WEEKLY SUSITNA RIVER fLOWS AT GOLD CREEK FOR 1D67 HYDROLOGY LATE STAGE III E-VI FLOW REQUIREMENTS -..uA·'".:'"~1 DEC \L~NE~A~~~:~:~:. '--- MONTH I I II I I I I I I FEB MAR A~R MAY JUN JUL AUG SEP OCT NOVJAN o 10 20 30 D I S C H A R G E I N C F S I I~'I'~.....-..._. FIGURE E.2.4.214 ,~---'."--' LEGEND NATURAL CONDITION FLOWS FOR PHASE 2 OF 2-STAGE PROJECT FLOWS FOR STAGE 3 OF 3-STAGE PROJECT ~INES ARE COINCIDENT 1'\)/-,I".""",-"_1 '--~-",-~I ---'""\,.r -~--,'/' /../---------....--- -~-..."""""....--,5 15 10 20 25 TH D I S C H A R G E I N C F S FIGURE E.2.4.215 o JAN FEB MAR r-I I APR MAY JUN I-~ JUL AUG MONTH I -1 SEP OCT ----r- NOV I DEC ALASKA POWER AUTHORITY susnHA HYDROElECTRIC PROJEct AVERAGE WEEKLY SUSITNA RIVER FLOWS A T GOLD CREEK FOR 1970 HYDROLOGY LATE STAGE III E-VI FLOW REQUIREMENTS ~~~I ~-'·_·I I'- ALASKA POWER AUTHORITY susnNA HYDROElECTRIC PROJECt AVERAGE WEEKLY SUSIT:NA RIVER FLOWS/>.T GOLD CREEK FOR 1981 HYDROLOGY LATE STAGE III E-VI FLOW REQUIREMENTS LEGEND NATURAL CONDITION FLOWS FOR PHASE 2 OF 2-STAGE PROJECT FLOWS FOR PHASE 2 OF 2-STAGE PROJECT I DEC \ LlNES ARE CbINC~::T,-"- /'.",..----...'----- r I I I AUG SEP OCT NOV I I I I I I I, I I I I I I I I I I "',I/~"I,.,...../ ".....'''"--- r-I I MAY JUN JUL MOl'JTH APR I MARFEB ---.---:----....------ JAN o 10 40 20 30 THOUSANDS 50 D I S C H A R G E ± N t F S I -.-o.LA•..-~I------ FIGURE E.2,4.218 1~--,,"_~[1 1__- _ " .~ '"-..0._---"'--~ 20 ------.,.lEGEN D NA TURAl CONDITION FLOWS FOR PHASE 2 OF 2-STAGE PROJECT FLOWS FOR PHASE 2 OF 2-STAGE PROJECT /'---::-....ro', I ..._,/' .r--I /'V-\~~N~S_AR~~~:CIDENT ",/~, \/ " ---------..-..... '~------'... 5 15 10 25 TH?USANDS 30 D I S C H A R G E I N C F S o JAN FEB MAR APR MAY JUN JUL MONTH AUG SEP I OCT NOV DEC FIGURE E.2.4.217 ALASKA POWER AUTHORITY susnU4 HTonOElECTnlC PROJECr AVERAGE WEEKLY SUSlTNA RIVER FLOWS AT GOLD CREEK FOR 1982 HYDROLOGY LATE STAGE III E-VI FLOW REQUIREMENTS ..........·--1.---- ~"-:r_1_..__..J - ALASKA POWER AUTHORITY SUSlTtlA HyononEcTmc PROJECT AVERAGE WEEKLY SUSITHA RIVER FLOWS AT GOLD CREEK FOR1984 HYDROLOGY LATE STAGE III ~.:..~I. ~"""'''''''I'''I I'- ------,, FIGURE E.2.4.218 "" ,- NOV DEC I OCT ""'---", SEPAUG Mont.hs ~ /I I' I I I , I I I , ..I , ,\I 'i--I ~---------, i JUN ~~' MAY --...- MARFEB ---:---------------- JAN o 10 20 30n c f s THOUSANDS 80 LEGEND NATURAL CONDITION 70 J 1\I ---FLOWS FOR E -VI FLOW REQUIREMENTS D I I\-----FLOWS FOR E - I 60 I FLOW REQUIREMENTS s c h 50 q r 9 e 40 -'-.-,,~' /- -~---_.~-., --..:....:..... ALASKA POWER AUTHORITY susnNA HYDROelECtRIC PROJECT AVERAGEWEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1967 HYDROLOGY LATE STAGE III LEGEND I NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS -----FLOWS FOR E - I FLOW REQUIREMENTS FIGURE E.2.4.219 I-"~'I ,I DECNOV -..------.."...-:::,:::_..------.. OCTSEP MONTHS JUN JUL AUG ~ I I 1 I I I 1 I I I 1 I 1 I 1 I 1 I 1 I 1 1 I 1 I I1 1 1 1 1 1 I I1 1 1 1 : I 1 I : I 1 1 1 :I ,1 1 1__1 I_________1 1 ../....;...__/_I/,.......__..-1 ..'..,,, MAYAPRMARFEB ---- /----..._--------,----------------------~-- JAN 10 o 40 50 20 30 C F S I N D I S C H A R G E 20 15 ALASKA POWER I UTHORITY SUSfTHA HVDnOElECT';.~ AVERAGE WEEKLY S';:SITNA RIVER FLOWS AT Gor D CREEK FOR 1970 HYD,IOLOGY LATE STAGE III ~.:...~I_. LEGEND ---NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENT, FLOWS FOR E - I FLOW REQUIREMENT DECNOV ......-....... /""".",-", r--""""""'" "1 ......1 I I I I I I I OCTSEPJUN,JUL AUG MONTHS I MAY ~~~ I I I I I:~---~------- I I I I I I I I II' I ,I \..,j'~/!-,......._", 1 I /'/: 1 I -y',...""'-..-"""I ...1 1 MARFEB --------....... -~-------------.................- JAN o 5 10 25 THOUSANDS 30 C F S I N D I S C H A R G E FIGURE E.2.4.220 I-........·I~··='--'----- ~-- ,--~-~.---'""-----"-'---.....'".--~ "~--"",,, D I S C H A R G E 50 40 30 I I I f\\ LEGEND ---NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS -----FLOWS FOR E -I FLOW REQUIREMENn SUSlIHA HYOROElEClRlC PROJECT AVERAGE WEEkLy SUSITNA RivER FLOWS AT GOLD CREEK FOR19B1 HYDROLOGY lA TE STAGE III ALASKA POWER AUTHORITY FIGURE E.2.4.221 1-....._·1 I DEC ...,,.--:::=~~_:;;.:;-.r'---...... NOVOCTSEP \I..-.,------'1 MONTHS JUN JUL AUG ,,,,:...,' ,/'",I r-...................,'I,----*' I ,_...I ,..".' MAYAP·RFEBMAR ---:::-::::_,------=-----,,--- JAN o 10 20 C F S I N ALASKA POWER AUTHORITY SUSANA ,'YOROElEClmC PROJECT AVERAGE WEEKLY SUSITNA RIVER FLOWS AT GOLD CREEK FOR 1982 HYDROLOGY LATE STAGE III ~;!!U~l_. LEGEND ---NATURAL CONDITION ---FLOWS FOR E':"VI FLOW REQUIREMENTS FLOWS FOR E - I FLOW REQUIREMENTS DEC ............,.. ,o' ",, I I I I I, I /,-.. f" I I ..._.,./' NOVOCTSEP MqNTHS JUN JUL AUG , "",,,,, ,,, , I, ,, ,,,,,, , , I , ,I"I ,,,-"----,",,,, r-~,-;-.. ,,'....;,,,1/• \,,/.... I ,,___") I "/'"I ,,,-",I I I I I 'I MAYAP~MARFEB o JAN THOUSANDS 30 25 D I S C 20H A R G E 15 I N ----------.....---:--_...-......" 10 --.................,-C ,.., F ,,,S '- 5 I r'o I'~....."'.....FIGURE E.2.4.222 ~---"0 ,_.-' LEIGEND: NATURAL --I -WITH PROJECT In:::@:n::!::l:t!]E LEV AT ION C HAN GE / V V I . I 55·1 5:'1:) 550 556 zo I- <(55')>- W ..J W j!siriilS wu.II .--...._.:...~. ... co I!) I!) o oo C':l C':l ..J e:(a:::> l- e:( Z .- 0: :Bg o.,J 'V ..J e:( ~ l- e:( Z :::::8:]';: 550 554 ~ I- W W U. ~ Z 0 I- <(552 >w ..J W 556 5 5 8 I I '.._.,_.~.ZK'.'_'.'·.A."".",,_....•• GOLD CREEK DISCHARGE (CFS WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 124.4,EARLY STAGE m 548 MAY JUN JUL AUG SEP 13-119 10-16 15-21 12-18 9-15 MAXIMUM FLOWS NOT E S:10%EXCEEDANCE 1.WATER SU FI\CE ELEVATION ABOVE RA ING CURVE 2.RATING BAS D ON COMPUTATIONS AND OBSER ATIONS(HE 1984-) MIDDLE AND LOWER RIVER WATER SURF ACE PR ILES AND DISCHARGE ATING CURVE S. MA Y JUN.JUL AUG SEP 13-19 10-1615-21 12-18'9-15 MEAN FLOWS 50%EXCEEDANCE MA Y JUN JUL AUG S[P 13-19 10-16 15-2112-18 ~15 MINIMUM FLOWS 90%EXCEEDANCE 548 o 10.000 20,000 30,000 LRX 28 RATING CURVEl 2 l FIGURE E.2.4.223 / /' ,/ / / / .622 618 620 614 za ~616 >w....w -....w ,1 ...I w _II (lift~"..... ELEVATION CHAN?E i.1 ......;.... -q-, N 1 N '0 ooo..; "it ...l <ta::::>...<t Z LEGEND: NATURAl': - - -WITH PROJECT 622 •I .....·.,.·.·.·. 620 6 III III\::::\I1@:..•... 614 .~ WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 130.9,EARL Y STAGE m 612 MAY JUN JUL AUG SEP 13-19 10-16 15-2112-18 9 -15 MAXIMUM flOWS NOTE S:10%EXCEEOANCE 1.WAlER SURfACE ELEVATION .ABOVE RATING CURVE 2.'RATING CURVE BASED ON .COMPUTATIONS AND OBSERVATIONS '(HE,1984-)MIDDLE AND lOWER RIVER WATER SURfACE PROfilES -.~ AND DISCHARGE RATING CURVES.,.",.,..,.· MAY I JUN JUL AUG SEP 13-19;10-16 15-21 12-18 9-15 iMEAN FLOWS 500)0 EXCEEOANCE I ! MAY JUN JUL AUG SEP 13-19 10-16 15-21 12-18 9 -15 MINIMUM FLOWS 90%EXCEEOANCE 612 o 10,000 20,000 30,000 LRX 35 RATING CURVE(2) QOlP CREEK DISCHARGE (CFS) ~~;.: -.6 U R';2•.{L.-...-J--- lE p&iifg ELEVATION CHANGE '-..-~. .,"~ 10,000 20,000 30,000 l RX 57 RATING CURVE(2) DISCHARGE (CFS) / ~ ,/ I r o748 750 za ~752 >w -'w silliEl,,;;;,"I §754 Uo.- MAY JUN JUL AUG SEP 13-19 10-16 15-21 12-18 9 -15 MINIMUM flOWS 90%EXCEEDANCE !!i'!!!ili~ MAY JUN JUL AUG SEP 13-19 10-16 15-21 12-18 9-15 MEAN FLOWS 50%EXCEEDANCE ~OLP CREEK WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 142.3,EARLY .STAGE m :::::::z:~ 756 I::...-L.J:}:::::]I L-.J I 1:<::<::r:::::::::1 I I I 756 NATURAL 758 -,..:j-:.~.I~~PROJECT I ,• ••758 748 754 I:::=:1:=I :=:=:=::1 1 1 I ri;;::}>T;;::}:}::::'}}:::;;::>1 1.....-=-= -....ww I I I N U.I. 0' Z 752f ~. a 0 ~0q >'lit W 'lit -'..... w «ao: ::l I-« I I Z 750 I M/t.Y JUN JUL AUG SEP 13119 10-16 15-21 12 -18 9 -15 AXIMUM flOWS NOTE S:10%EXCE EDANCE 1.WATeR SURF CE ELEVATION ABOVE RATI G CURVE 2.RATING CURVE BASED ON COMPUTATIONS AND OBSERVATIONS (HE,1984-)IDDLE AND LOWER RIVER WATE SURFACE PROFILES AND DISCHA GE RATING CURVES. FIGURE E.2.4.225 LEGEND: NATURAL - - -WITH PROJECT 5 58 n :.1.:;:•.•_...............i 556 .... 554 r oi ....ll)o:il-ll) W ll) W g ll) ~~0 0 z 552 f ..,.0 0 ...J C'J C'J I-«...J«~« >I-~w «I- ...J Z «w z 550 .. I I I ELEVATION CHAN,GE I it 5:'8 556 55 ·1 w ~..... zo I-«552 >w ...J W 550 / / V I I GOLD CREEK DISCHARGE (CFS WEEKLY AVERAGE WATER SURFACE ELEVATIONS ~T RIVER MIL~124.4 ,LATE STAGE m 548 MAV JUN JUL'AUG SEP 13-19 10-16 15-21 12-18 9-15 MAXIMUM FLOWS NOTE S:10%EXCEEDANCE 1.WATER SURFACE ELE VATION ABOVE RA TlNG CURVE 2.RATING BASED ON COMPUTATIONS AND OBSERVATIONS (HE1984-) MIDDLE AND LOWER RIVER WATER SURF ACE PROFILES AND D,ISCHARGE RATING CURVE S,. MA Vii JUN JUL AUG SEP 13-19,10-1615-21 12-18 9-15 MEAN FLOWS !50%EXCEEDANCE MAV JUN JUL AUG S[P 13-19 10-16 15-2112-18 !t-15 MINIMUM FLOWS 90%EXCEEDANCE 548 o 10,000 20.000 30.000 LRX 28 RATING CURVE(2) I=I~URE E.2.4.226 --- 10,000 20,000 30,000 l RX 35 RATING CURVE(2) DISCHARGE (CFS) 1 I / / ,/ / / I - 618 612 o 614 620 622 ':.-;.: 11111~1l!;;;1 ~ a ~616>w -'w MAY JUN JUL AUG SEP 13-19 10-16 15-21 12-18 9 -15 MINIMUM flOWS 90%EXCEEDANCE MAY JUN JUL AUG SEP. 13-19 10-16 15-21 12-18 9-15 MEAN FLOWS 50%EXCEEOANCE t00tt;~ELEVATION CHANGE aOLp CREEK WEEKLY AVERAGE WATER SURFACE ELEVATIONS AT RIVER MILE 130.9,LATE STAGE m NATURAL 612 618-.... W -0W C"i,LL N--0Z0a0 0~616 '<:41~ '<:41>.....w «-'~w :::> I-«z I I I 614 620 622 JUN JUL AUG SEP 13-19 10-16 15-21 12 -18 9 -15 AXIMUM flOWS NOTES:10%EXCEEDANCE 1.WATER SURFA E ELEVATION ABOVE RATI G CURVE 2.RATING CUR E BASED ON COMPUTATIO S AN 0 OBS ERVATIONS (HE,1984-)IDDLE AND LOWER RIVER WATER SURFACE PROFILES' AND DISCHA GE RATING CURVES ••"", I' FIGURE E.2.4.227 10,000 20,000 30,000 l RX 57 RATING CURVE(2) DISCHARGE (CFS) .' / V ,/ . I CHA NNEl BOTl OM l-. 748 o 756 754 750 758 za ~752:>w.....w . )~??~~i MAY JUN JU L AUG SE P 13-19 10-16 15-21 12-18 9 -15 MINIMUM FLOWS 90%EXCEEDANCE SEP 9-15 I EL EVATION CHAN~E I ~."- MAY!JUN JUL AUG 13-19i 10-16 15-21 12-18 IMEAN FLOWS ~Oo~o EXCEEDANCE ~0~.~,;;;; .! I GOLD CREEK WEEKLY'AVERAGE WATER SURFACE ELEVATIONS 1 i ' i AT RIVER MIL~142.3,LATE STAGE m .... <t cc ;:) ~z LEGEND: NATURAI.' - - -WITH PROJECT 758,I.:tn-:-', ,li1. ~~~,!ilill11]ltlL 0:. II) "ooo ~ ':t ':t 756 750 ... 754-....wwu..-za ~752:>w.....w 748 . MAY JUN JUL AUG SEP 13-19 10-16 15-21 12 -18 9 -15 .MAXIMUM FLOWS NOTES:10%EXCEEDANCE 1.WATER SURFACE ELEVATION .ABOVE RATING CURVE 2.RATING CURVE BASED ON COMPUTATIONS AND OBSERVATIONS I HE,1984-)MIDDLE AND LOWER RIVER WATER SURFACE PROFILES, AND DISCHARGE RATING CURVES.," -au R '2 .4'-------.-i ~-- 40 NOTES: 6%EXCEEDENCE FLOWS 50%EXCEEDENCE FLOVI 97%EXCEEDENCEFLOW 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 3 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS 4.E-VI FLOW REQUIREMENTS LEGEND ----;..-:;..;.-::.-:-""--::.=-:."" I ...I ~,I -' / I, I , I " I " I , I , I \ I \ I , I \ I \ I \ •~...\ , I \ I \ I \ I \ I \ ;'\~-----------~\...\ ~;;.r--------------\-.~===~:~--''~ -==--::=c:....__.~ S 15 10 20 2S 30 3S g a r D e s c h c f n s o Months ,JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC FIGURE E.2.4.229 "LASKA POWER AUTfIOA1TY Slr..~INA."'Jnuoru c true NlOXCJ SUSITNA RIVER STREAMFLOWS EXCEEDED 6%,50%AND 97% OF THE TIME AT GOLD CREEK EARLY STAGE III ~.:..~I -·---1-I'- ALA5:(A POI'YER Al1THOflITY ~HA Hl't~ucmfCrno..ECl SUSITNA RIVER STREA"'FLOViS EXCEEDED 97%OF THE TIME EARLY STAGE 11\ AT GOLD CREEK COMPARISON INDICATES FLOWS FOR EARLY STAGE II ARE MORE STABLE THAN FOR EARLY PHASE" BECAUSE EARLY STAGE III ENERGY PRODUCTION IS HIGHER THAN FOR EARLY PHASE""" 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 3 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS ----FLOWS FOR STAGE 3 OF 3-STAGE PROJECT DECNOV 4.E-VI FLOW REQUIREMENT 5.PHASE 2 OF 2-STAGE PROJECT IS EQUIVALENT TO STAGE 3 OF 3-STAGE PROJECT LEGEND ---NATURAL CONDITION ---FLOWS FOR PHASE 2 OF 2-STAGE PROJECT --........, I ,..---.....'...---....... I -...- ":, \" 1\'I\ I 1\-"'J OCTSEPAUG Mft,.XIMUM FLOW=35.000 cfs JUN JULMAYiAPRMARFEBJAN o THOUSANDS 25 D 20 i s c h a 15 r 9 e i n 10 c f r--------- S 1-----,---.-, 5 --, Months FIGURE E.2.4.230 '~~I. 1-1-----..._a .. / /--"-........-:----: .----~,~) ALASXA POm:R AUTliORITY SU::inHA Hytp'l(~ltC1Jac J"J()..€ct SUSITNA AlYEA STREAUFLOWS EXCEEDED 50%OF THE TIME EARLY STAGE III AT GOLD CREEK -.p.:u..:...~I, ---I-I'- 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 3 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS NOTES: COMPARISON INDICATES FLOWS FOR EARLY STAGE III ARE MORE STABLE THAN FOR EARLY PHASE"BECAUSE EARLY STAGE III ENERGY PRODUCTION IS HIGHER THAN FOR EARLY PHASE" ----FLOWS FOR STAGE 3 OF 3-STAGE PROJECT .4.E-VI FLOW REQUIREMENTS 5.PHASE 2 OF 2-STAGE . I PROJECT IS EQUIVALENT TO .ST AGE 3 OF 3-STAGE PROJECT LEGEND NATURAL CONDITION "---FLOWS FOR PHASE 2 OF .2-STAGE PROJECT --~ DEC FIGURE E.2.4.231 ------ NaY -'--- SEP OCTAUG MAXIMUM=35.000 cfs ~~~ Months APR MAY JUN JUL ---- MAR --------'-~--- JAN FEB ----------- ANDS o 5 o T c f s ri 9 e a r s c h D ------------------- D i s <:: h p r 9 e ii h c f s THOUSANDS 60 50 40 30 20 10 o JAN MAR MAY .JUL SEP OCT NOV DEC NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 3 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS 4.E-VI FLOW REQUIREMENT 5.PHASE'2 OF 2-STAGE . PROJECT IS EQUIVALENT TO ,STAGE 3 OF 3-STAGE PROJECT LEGEND ---NATURAL CONDITION ---FLOWS FOR PHASE 2 OF 2-STAGE PROJECT' _::.._-FLOWS FOR STAGE 3 OF 3-STAGE PROJECT COMPARISON INDICATES FLOWS FOR EARLY STAGE II ARE MORE STABLE THAN FOR EARLY PHASE II BECAUSE EARLY STAGE III ENERGY PRODUCTION IS HIGHER THAN FOR EARLY PHASE II AlJ\Sl(A POWER AI.ITHOrnTY Sl~;"HA .~I(,nfCH"C .·'UO....CI SUSITNA RIVER STREAIAFLOWS EXCEEDED 6%OF THE TIME EARLY STAGE III AT GOLD CREEK 1-- =y~.:-~I_ FIGURE E.2.4.232 1---.--1-1M0nt.h '-1:,~-~' SANDS NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 3 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS 4.E-VI FLOW REQUIREMENTS LEGEND 6%EXCEEDENCE FLOWS 50%EXCEEDENCE FLOWS 97%EXCEEDENCE FLOWS --.,..---...........-------' ,-,,, -------------' ,.-.-.-.- ------'--------------'~! /'---,I.-~----_/,J'---_/~ - o I JAN FEB MAR APR MAY JUN JUL Month AUG SEP OCT NOV DEC FIGURE E.2.4.233 ALASKA POWER AUTHORITY S\.SIN4 tM'fJO£l£CUnc rno.KC1 SUSITNA RIVER STREAMFLOWS EXCEEDED 6'1>,50'1>AND 97'1(, OF THE TIME AT GOLD CREEK LATE STAGE III ~.:!'~1 -.._:j"'"1-- -- AlA~:<A POWER AU1lfQflITY ::>tr.:nHA .~lECJIl'IC f'f'OJ[ct SUSITNA RIVER STREANFLOWS EXCEEDED 97%OF THE TIME LATE STAGE III AT GOLD CREEK ~.:...~oel . -·....1-I - - - -FLOWS FOR STAGE 3 01 3-STAGE PROJECT LEGEND --NATURAL CONDITIONS, - --FLOWS FOR PHASE 2 01 2-STAGE PROJECT 4.E-VI FLOW REQUIREMENTS 5.PHASE 2 OF 2-STAGE PROJECl IS 'EQUIVALENT TO STAGE 3 OF 3-STAGE PROJECT NOTES: 1.HYDROLOGICAL DATA FROM PERIOD' 2.STAGE 3 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS DEC FIGURE E.2.4.234 ",-'-.....,.. ",- {, I, I, J NOVOCT ,LINES ARE COINCIDENT FORITHREESTAGEANDTWOSTAGE PROJECTS AUG SEPJUL Moint.h ! MAXIMUM FLOW=35,OOO cfs JUNMAYMARJANFEB o 5 --,:",--:_-~................ 10 15 20 THOUSANDS 25 n s c f a r Q e D i s c h L II--'.!W ' ANDS ALASKA POI"I'ER AIJTHOfllTY S\T.'JTHA..Irrubucunc f"flOJEcr SUSITNA RIVER STREAIoIFLOWS EXCEEDED 50%OF THE TIME LATE STAGE m AT GOLD CREEK r.A"'oEA·~_I.---I-I - - - - -FLOWS FOR STAGE 3 OF 3-STAGE PROJECT CONSTRUCTION LEGEND ----NATURAL CONDITIONS ----FLOWS FOR PHASE 2 OF 2-STAGE PRo.ECT DEC FIGURE E.2.4.235 NOV ///---" -<:.-:-.:;;/ Month ;:~,1 ~--=--_...~ "~¥\ ,I ........" "'1::...::::' APR MAY JUN JUL AUG SEP OCT ........_- MAR --------==cr.....r.", JAN FEB ~~~~illlillillmli-~~;;;:;;;;;:;~;;;-;;;;;--lilllillil~NOTES: 1.HYDROLOGICAl DATA FROM PERIOD 1950-1983 2.STAGE 3 OF 3-STAGE IITIi:!i~~~f~:::-I")::'~'-\J--PROJECT ,:3.AVERAGE WEEKLY FLOWS ;;~::4.E-VI FLOW REQUIREMENTS (5.PHASE 2 OF 2-STAGE PROJECT IS -EQUIVALENT TO STAGE 3 OF 3-STAGE PROJECT o T n c f s 9 e a r D s c h ALASKA POYVE'R Alm!oRITY S\OlK4 tn'Or.'O£l f C tRtC NOJECl SUSITNA RIVER STREAMFLOWS EXCEEDED 6%OF THE TIME LATE STAGE In AT GOLD CREEK ~.:-~I, ---I-I'~ ---NATURAL CONDITIONS - - -FLOWS FOR PHASE 2 OF 2-STAGE PROJECT - - - -FLOWS FOR STAGE 3 OF .3-STAGE pROJECT LEGEND 4.E-VI FLOW REQUIREMENTS 5.PHASE 2 OF 2-STAGE PROJECT IS 'EQUIVALENT TO STAGE 3 OF 3-STAGE PROJECT NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 3 OF 3-STAGE PROJECT 3.AVERAGE WEEKLY FLOWS -----.." FIGURE E.2.4.236 Mo~th MAY JUN JUL AUG SEP OCT NOV DEC --- JAN REB MAR o 10 20 40 30 50 THOUSANDS 60 a r s c h D ,::}'.... ~--' \_-- T~OUSANDS 50 NOTES: D 40 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 3 OF 3-ST AGE PROJECT 3.AVERAGE WEEKLY FLOWS 4.E-I FLOW REQUIREMENT s c h a r 30 LEGEND 6%EXCEEDENCE FLOWS 50%EXCEEDENCE FLOW 97%EXCEEDENCE FLOW ALASKA POWER AUTlfORfTY SUSJ1NA 'fTOR(J£uctRtC rROJEct SUSITNA RIVER STREAMFLOWS EXCEEDED 6'£.50'£AND 97'" OF THE TIME AT GOLD CREEK LATE STAGE III ~-~I- --'---1-I'- ---~ --r DEC FIGURE E.2.4.237 I NOV ---r OCT """....L L../"\ I , \ \,, \'-'"I\.._-.......~"1 ....,,,I '----.-",1 I I ..JUL AUG SEP Months r I MAY ..JUNAPR ~~ MARFEB _____~I____~,,~I __~~~~I______~_,,,"I -~---- ..JAN o 10 20 c f n 9 e s ALASKA POWER AUTHORITY SUSft"-'HVOROELECfRlC PROJECT ---susrrNA RIV!iR STREAMFLOWS EXCEEDED 6%OF THE TIME LATE STAGE m AT GOLD CREEK ~,!A.:J~I_. --.·...&'lII·r·..I-~ 4.BETWEEN JUNE 10 AND JUNE 16 THERE IS A SPIKE TO 45.000 CFS 5.BETWEEN AUG 12 AND AUG 18 THERE IS A SPIKE TO 23.000 CFS 6.BETWEEN AUG 19 AND AUG 25 THERE IS A SPIKE TO 18.000 CFS LEGEND --NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS FLOWS FOR E - I FLOW REQUIREMENTS FIGURE E.2.4.238 NOTES:111111;1~111'HYDROLOGICAL DATAFROMPERIOD1950-1983 2.STAGE 3 OF 3-STAGE PROJECT ':)i~ljl3.AVERAGE WEEKLY FLOWS M0NTHS I IIi I i------'-----"----===---~----"------:......!, 1 '/ O~~~~~~•• 10 50 THOUSANDS 60 h:':::":'"""."",.,'x·,··,· D 401 S C H A 30R G E 1 N 20 C F S .-...-11----~ ALASKA PO"!,,,AtmKlAITY S<ISITMA """'lJnfefl\lC PftO.lEe' aualTNA IIIYIlII aTlIllAIiPLowa IlXCIlIlDID 50 %OF THE TIME LATE STAGE m AT GOLD CIIIlIlI(------1-1-· LEGEND --NATURAL CONDITION ---FLOWS FOR E -VI FLOW REQUIREMENTS FLOWS FOR E - I FLOW REQUIREMENTS NOTES: 1.HYDROLOGICAL DATA FROM PERIOD 1950-1983 2.STAGE 3 OF 3-ST AGE PROJECT 4.BETWEEN JUNE 10 AND JUNE 16 THERE IS A SPIKE TO 45,000 CFS ~.~ETWEEN AUG 12 AND AUG 18 THERE IS A SPIKE TO 23,000 CFS 6.BETWEEN AUG 19 AND AUG 25 THERE IS A SPIKE TO 18,000 CFS ".-/""-,..- "/'"/'",,,, /'"....",..,, I I r----· L.~"--, .......---..'-....-- MONTHS FIGURE E.2.4.239 ........--- ---------....... ........------------....., "'....- ....-.....-........ 5 0-!--d-2~~~~~2.Pd2G04~0l.:.S.D---~-+J2~~~ 15 _fi .......•••·•.·• 20 10 USANDS 30 ]lllllllllllii;~----llli~~~-~~- 25 3.AVERAGE WEEKLY FLOWS I N C F S o I S C H A R G E l'---'''~I'- ~~I- ALASK...Pf'wm ...UTHORITY I 4.E-VI FLOW ,REQUIREMENTS 5.BETWEEN JUNE 10 AND JUNE 16 THERE IS A SPIKE TO 45,000 CFS 6.BETWEEN AUG 12 AND AUG 18 THERE IS A SPIKE TO 23,000 CFS 7.BETWEEN AUG 19 AND AUG 25 THERE IS A SPIKE TO 18,000 CFS LEGEND SUSITN ...RIVE,R STRE ......FLOWS I' EXCEEDED 97%OF THE TIME LATE STAGE m "'T GOLD CREEK ' ~'""tfTURO£l(CJFltC f"R()..,Ect ---NATURAL CONDITIONS ---FLOWS FOR E -VI flOW REQUIREME FLOWS FOR E - I FLOW REQUIREMENTS 3.AVERAGE WEEKLY FLOWS FIGURE E.2.4.240 ~'".../'" r, I I I I I I Mo:n.t.hs -;- I -~i, !\ " NOTES: 1~~~~~~~~~~~~~~~~~~~~~~~~~~~~l1.HYDROLOGICAL DATAFROMPERIOD1950-1983 ::~~~~OF 3-STAGE ---------""7---~----.... o 5 ---------..", "-- 15 10 20 THOUSANDS 25 c f a ~ 9 e n s c h s D ,------''---, ~~ L_~ o w m ~•~~~•m ~ PERCENT Of tIONTHS D1SCtnU IS EllJAlLED (R EXCEEIlED OCTrnER PER&trr OF ~THS DI~IS 1ll.R..i.ED M Ex<:EmD ..m.mt --- --~- -- b GI m 0 ~I D I -- !---- o w m ~•»•~•m ~ PERt:EUT (F ~nlS D1&:KlRGE IS EWUED m Elll:EEmO NOVat:£R a lOz lOS 1015 o ~ U W II) ll::~10" l;j ~ u III ~10 3 ~ ~ ld ~10 3 ~ i fd o 102 ~ lit II: Ie 10" l- t!u.. u- PERCENT Of ~THS DISCHAItt IS -EllJAl.LED cR EXCEEDED (ECD&:R LEOCt-() -- "'" 10 411 b b b III !ill I LOt lO 3 lO!l~jijii LO i ~ ~ ~I I I I I IoLO%I I I I I oa hi Ul 0: ~LO"....wwu.. u...ma ~ !t ~o 2 B --Itil •I-~«->--->~10'_J ....--t 1 l""""'t~;:.I ~ u..,t--~Jitijl~t~-LI... ~lOi OOT[.FL~PERIOD WATER YEAR 1951-1983 ~RZA-EBASCO SUSI T~JO INT VENTURE JUI'£B5 ____NAT~ - - - - -WI TH-PRO...ECT •EARLYSTAGEmCASEE-VI. FLO~DURATION CURVES BASED ON 110NTHLY OlSCI-flROE SU5ITN~RIVER AT WAT~Or:t1SITE FIGURE E.2.4.241 (PAGE 1 of 3) FLOW WRATJON ClflVES BASED ON 110NTHLY Ol&:H=lROE Sl!iITNR RIVER RT WRTm:!DRMSlTE .~~,m m c m ~~••~PERCENT OF tmTHS DI ~15 EWUED OR rttnml HAY .......I I I I.I I o ~m ~~~•~~•~ PERCENT Of tmll15 OIs:HOOGE IS EflR-lED OR EllCEEtlED ~u 10'1~~'~J'~l:::i:~ri--=I==t=t=-I I I I I I I I lOS~~ 10 3 -p~ I I I I C 10 2 I I I I I I I c ~ ld lJ)_ It 1i-i~iii~I~'~_~_~~~~1~10'___ _ w .....~ u-CDa i i ~c ~ 8 ~10'~.~~~~~~~~~!~~ u... ~10 3 -~, lrl 10~~ o 10 '+-_+--+_-+_+-_1--+_-+_+-_1--1 o w m »~~•~~m ~ PERCENf IF ~THS OISCHAlU:IS EWAlLED {R EXt:E£lED FE~~105 I • ~ 8 ~la'~~~ii~!~~~~!~tlJ 1u. ~la'~iiii~~_~~~fi 1~ lrl oeuw ill 0: IJJ 0..10 4 I ....W I W I I U.I ! Um ~I IC!to l I • ~:Ii.I . M:'1 I o la' p~o~IIONTHS Df~liS ~WAl&D (Rfo EXCEEtEl Jill ,RPRIL i ',,,LElmJ I I . I,I I I NRT~ NOTE.FLQl.lPERIOO ~TER YEAR 1961- 1 1993 ---__",TH-PRO.£CT.EARLY ,I i STAGEm CASE E-V1. HtlRZR-EBASCO SUSITNA JOINT VENTURlf ..itE 85 FIGURE E.2.4.241 (PAGE 2 of 3) ----L ---<"-----...-'---' to l "" .-- _.An> --..- b D lOll III 0 I D W m m _~m ~m m w PERCENT IF mUHS D1s:tmCE IS EOOUEO ~EXCEI1El .ALY - --I .....I-I;=:_r--_ -c-<:,••'__~ --f---- r--__I--_,.....- -I I I I _ II"--=-. -+---=--f:""- -:=-Jt-I r-, PERCENT Of ~tHs DI~IS lWUEO (R EllCEEDm SEPTEtI£R 10 6 lOIS o isu ~ 0:: Ie 1O~ l;j W IL U-II)q 10 3 ~ i ldo 102 ii 102 ~ 0:: ~1O~... ~ u ~ Gj ~10 3 W ff ~ Irl PERCENT Of IMJNtHs OISCHA!tt IS -EQ.JALLED M-EXC£ElED Al.JOL6T "LEr£~ """'" .........1-- -1------- - :=J i---l-I - -- I-- - - ~-....-.....------,-........-_I -=;:= '"I.. i--- ---I-- --I- - l- I -- - -.b :t !ill .&III..~illrtbzb o w ~~~~m.~m E ~ PERCENT OF tIlWTHS DlSCHRla IS EllRLED m EXCEElED ..u£ 10' to' oo tJ lJ) 0: :t LO' 2 8 OJ IX' Ie to ~ I- :;j l4. (J.... ~10 1 ~ 9: bl o 10' l- UI W l4. (J-mq 10 3 ! o NOTE.FLOW PERIOO WATER YEM 1951-1983 HARZA-EBASCO SllSITNA JOINT VENT~E ..l.t£B6 ____NIH~~ -----WtTH-PRO-£CT.EARLY STAGE m CASE E-VI. FLO~DURATION CURVES ~SED ON 110NTHLY DlSCIf1ROE SUSlTNR RIVER AT WATlUl DFt1SITE FIGURE E.2.4.241 (PAGE 3 of 3) ______NATURAL -----~ITH-PROJEcr.EARLY STAGEm CASE E-VI., -.w.-.-t,;;,..- FLO~DURATION CURVES BASED ON MONTHLY 0l5UflRGE: SUSIT~R[VER AT DEVIL ~YON DFt15ITE PERCENT (i:'I'OITHS DIOCl-mG£IS EWlLLED ~EXC£[l:£D ~ -....-+--.,J-I I I I I I I I --.•---_.~._- ----f--.- ~~-- .~--- .---.-.- f--- ,--- - ,--. 10 ftl b olD "J 60 ID !II I i-t--t-I I -r I I I I I r----"' o w ro 51 ~~lIll ~lIll ~~ PERCENT OF I1l}jl HS 01 e:t-mGE IS EllR.LEO ~EX([[[EO N]VEtf£R lOli~~ 10 2 I~~~I~~I-:±Jtj-f=J~1=t=I I I I I I I I 10 5 aznuw Ul It: ~10· ....w W II. U ID ~10 3 W Ii? ~ 17lo 102 2ou IX oc ~10"....:.IL-'-. l- Itl II. U... ~10 3 -=-W ~ iu Ul a - i - ! i -_. f--- --..'r-=-:--.~..1--., 1-.i •:f-...---- j , I ._~- I I I I f "'"--I i fI! , f ,f-...-- f I I i 10 !II II ..I I b b lIll so l~ LOS o 5 lJ W In lr it to"....wwu. u m ~103 ~~ }A o 102 lO~ o lOt 1 I I • , I Io10l!II 51 <lQ :II:10 'lD lIll 90 lID fERCENT (f ~THS D1SCtm:;E IS EllJALLED rn EXCEEIEO,I , OCTqa:Ri 2 8 I)l lr Ie LO".... tllu. u.... ~lOI ~ ~ Uto ,PERCENT Of "ONTHs OI~/IS'EQ.JALLEDrn EXCEEDED i OECEI1ElER LEGE~ f • NOTE.FLOH PERIOD Io¥lTER YEAR 1961~19~3 i IHARlA-EBASCO SUSITNA JOINT VE~TURE JUNE 85 I FIGURE E.2.4.242 (PAGE 1 of 3) '-.---.J ---'\....--.-...J I I I II I I a 10'I I I I 10a~iiiii~u IH lr ~10·_.... ltl i1O'1iiiliiii~~,~ ~I I Io102I I I I I I I I LOa~iiiii 10J C$±=S=++BE ~ B ,~~~ «-l I--Ie la'=f=~....t-~t11. U... ~ ~ i M o ~m _~•m ~c •~ PER£ENT m:OTIiS OISC~IS EQ.Jll£D IR EXlEEII:D FEBRu:lRV o ~m n ~~•~m •~ PEIlCl"NT ()'"toms Dl~IS EQlJU..ED m Ellt:f.EDED tm:H La' PERCENT OF tOITHS Dl!nflRllE IS EOOIUfD OR EllCEEDEO MAY !-- '.- I tl Il D r;n GIl b I lOt toq 10 3 ~ ~ lrl o o ti l;1 UJ lr ~10· I- W ~ U lOS LElDIJAPRIL ~- P£RllNr 0 toi Hs DI §cHARi E IS ~em1rn IREXCE~D I 10' 10' ae Iii UJ ~10· t'iw 14. U...ma !a t-OTE.FLOW PERIOD WATER '1EAR 1961-1983 HARZA-£BI.lSCD SUSITNA ..DINT VENTURE .u£86 NATlmL -----WITH-PRO.£CT.EARLY STAGEm CASE E-VI. FLOW DURATION CURVES BASED ON NONTHl Y DI SCI-JlRGE SUSIT"I1 RIVER AT [EVIL a:t4YQN 0rt15ITE FIGURE E.2.4.242 (PAGE 2 of 3) 10~1-_- I 10' ~~-,,9 I I 8ui;~i ,I ~1'-_I a , I !-Ir --,-le 10·k,J 10 4 -I---... ttl :ItlII U.,!IL U ,I u.....:~m I , IIj 3J!t~10 J ~10 uJ ,W~,~--,I~!:~_.-I----u i.I ;ldUl,1--- o lOr :I o 102 I ~tI)Q 10,'2'0 51 &Il :I)'lO llIl flO 100 0 10 zo S)~~10 'lO llIl III 100 lUCENT,[f tOllHS OISCHAIG.IS Ell.lAU.ED m EXCEEIED PERCENT [f tUHHS 0Is::HARGE IS fWU.ED ~EllCEEIIO ~!..AU lOS lOS n -o _.i-----._- IZ--"-'---,.n0I --r---- ~.--u -I UuJ~~-!,w Ul ---..III a ,-~"'-1-,....II: W !i'-..w 0.10·0.10· l-t-W I W W I WI.L i I.L U ,Ii i .u-," !-m III:::J " :J~tal ~10 3 uJ ~~;~,~ 11I !:.!~I -o 10z a lOz "I 10 I !~b_III Sll I»'10~.~,~l!!.GIll It·Il.~I DPERCENTIIONTHSDlSCl-M£IS EQA.L.EO m EXCEEIED !PERC£HT OF H(NTI!S DIOCtmCE ISEQlA..LED ~EKCE~O.••.'"FllG.sr i LE(£tIl SEPTEI&R' NOlEt FLOlol PERla[]~lER YEI~Rl96Jse~-_...:...-~N~OJEcr.EARLY fLO~DURATION C~VES, .i i ,STAGE m CASE E-VI.BASED ONI10NTHLY DlSCtilROE fiARZA-EBI-lSCOSl.JSlTNA JOINT VENTURE ..JE 86 SU51T~RIVER AT [EVIL Cr:t~YON Oft1SITE ! FIGURE E ..2 ..4 ..242 (PAGE 3 of 3) '~--' 10!. o w ~~~~~~~~~ PERl:ENT Of ~TH5 OISCHAIU:15 EQ..RLEO rn EX[EE[EO OCTOEER PERCENT OF'tollHS DI~ISEOlR..L£D OR ExcrEt£D .mJRt =--------1--- f---- -- -------------= -f--f--- ....... - In 0 I:Il GIl om I I - -,,", --...'" f---- ---- o 10 Z(J 3l ...so 10 'lll III III lID PERCENT Of tolTHS 0I9.lmGE IS EWUED m EXCEEIEO tilVEt'EER 10' 10 5 lOS Cl ~u W III It: ~10· ~­ww... u -Cl 102 -mq 10 3 i Mo ~ III a:: ~10 4 .... ~ u.... ~t!]0::1 W 11 ~ bl III LEWllDElDlBER -......... P£R~NT 0 ill ~III b_lIIllllll IIMHS DI~IS EGJ..R.LEO m EXCEEtED tO~~~It 8 ~~~to ~_ __== ~~~IU- (J ~~iii~~~~~~,~~~10'1 ~I I IlrlI I I610'I I I I I o ~ l;1 Ul 0:::r LO· l- UI UI l&. U m ~tO i i hi o La' t>lJTE.FUlloJ PERIOD WATER YEAR 1961-1983 HARZR-EBASCO SUSITNA JOINT VENTlJiE ..u£86 ----NATlJiAL -----W!TH-PRO..ECT.EARLY STAGE m CASE E-VI. FLOW DURATION CURVES BASED ON MONTHLY Ol5C~E SUSlT~RIVER AT OOLO CREEK FIGURE E.2.4.243 (PAGE 1 of 3) FLO~DURATION CURVES BASED ON 110NTHLY 0 (SCIi1RGE SUS lTt-JI RIVER RT OJLO CREEK Iii zb il ~60 &iI io iii SI lW PERCENT OF ~TIfi DI~IS E(lR.lEDOR EXCEEDED "AY I--I I I I I I I -+---+-- o ~ro ~c ~~~s ~~ PERCENT IF mUllS OIS::KlRGE IS EOOl.lEO M EXCEEIIO IAlCH I l-t-I t---'--t II It-I I 10 2 I I I I I I I I I I I 10 3 CI=t:q:::E=F+=l=t=i 10·._iii I I I I o lOZ II I I I I I 10 5 o -5 -.;:::t-== td >.-'~. Ul ~---r-- ~l .--_._- 11.10·-t;j ~--_..--=--= w ~.-u.~ u-III :JrO'!EI~~_~~~~~~ bi - 1 I 1 I. I _..~,J.-I..J.I •I -If-I i I t I lO'~iiiii 103 __~ o ~m ~~m,~~~~~ ~!nNt IF ~HS D1SC~1,5 EWALlED [R EXCEEII::O FEBRlllRY 10'I i 5 10 'tJ[=t.-1--i;-t-ttj:-:t:J~~ ~ ~lO'_ u.. u ~ ~ ~ bl o tiuLU Ul ffi IL 10· W LUu.. U ~1 iii 'l"~10 3 ~II 'I~ItrlI 'i I -!Ii'o tal ___11L_~b I ;b i1'~1 PfRCENT (lION lis D1SCHR11£;18 EllJAL.l£Il [R EXCEEDED APRIL.LEGfJ{)'I .'i i .t-jATlfiAL NOTE.FUlWPERIOO WATER YEAR 19611"'1983 -----'\:lITH-PRQ-£CT.EARLY'i STAGE III CASE E-VI HFlRlA~O SUSITNA ..XlINT Ye~.u£B6 FIGURE E.2.4.243 (PAGE 2 of 3) ~' o ro ~~~~~~~~~ PERCENT rf I10NTHS D1SCHA1l1:IS ElUUED m EXCE£[ED .u£ o ro m ~~~~~m m 00 PERCENT (F tOlTHS 01 ~IS EWUED ~EXCEEDED ..ALY ~ ---=-f----'- ~ - - - ,----~10-. - I--'-..f-...---I==-- == ===.-=--=I F=f-::=.. -~f.-- - \==I-- - I-- -- -~-== :===-1----I:=.-==-i---:'--_== =e------1--1-- \=--e---1--1--1--1--_ --'-'--I J>--'-'--~I I I _.-I I I I II I •rT 1011 10 5 51 8 III a: Ie 10·... Itl Il. W... ~10 3 i iii Ci 102 - "'- f-. lO~ 10 5 ~ l!to 1 W Ii ~ hi Ll to? 2 Bm a: ~to'.- :tlu. u ~ PERCENT OF tOltHS 01 OCHARG£ISEOOUED OR EXCEEDED SEPTEHE£R - .- .. -- 10 I:l )II CII m E I o 5 ld III Ir :e 10' tiw Il. W lD ~10 3 ~ ~ bio 10% -------i-,--...........= - 10 2Il 4Q a b D 90 I PE~CENT OF ItONTHS D1SCtmJE IS Ell.lAlLEO m EXCEEIED ~T ~OC~ l)zauw Ul l:r It to' f- W W Il. U m ~to i i bl o 10% NOTE.FLOW PERIOD IolATER YEAR 1961-1983 HARZA-E8ASCO 5lJ5ITNA JOINT VENTURE JUNE B6 NATlmL -----WHH-PROJECT.EARLY STAGEm CASE E-VI. FLOW DURATION CURVES BASED ON MONTHLY DlSCH=lRQE SUSJT"-A RI VER AT mLD CREEK FIGURE E.2.4.243 (PAGE 3 of 3) l I 10'I 1081~~~~~~~~~~~~m~~,~ 8 :I 8~i I I i III 0:I I crIe10IiI~]0& ....I--- ttl I I Itl ~I I ~ ~I \~ '!l ::-••_~--+-----r--...~-._--_-~LO 4 I '....-~to41~~~i~'-i-~-!"~-~'-,.~'-~-§-§~-~-!~~~~,W~,~-- ~: I ~ hi I i fd --I -f---l---t------+---f---j a 10J I a 10 3 Ii I I +--t:--ll--t--+--t--+--I--f--+--I o wm ~~m 1m ~e e ~0 w m D C ~00 ~e m ~ PERCENT,OF tDfltfi OISCwmE:IS EIlJRlLED (R EXCEElEO PERCENT DF"i I'UIHIS D19:HARG£IS EWllLED m [)((£[OEO OCTmER i 'I{)\'Et&:R 10 II I ,10 6 .___ o ,a ---i-- ~:I li -- fit Ii :rl -- UJ .i I I Ul .I-- ffi I I ffia.10 I I a..lOS __•. ....:~-----W I WWIIW _ ~I ~ u II U i f-- CD '.I I ii~104 1-_--.....----...:....---~10 4 _ ~, I I ~- i !f bl I -hi -.... -I - o 10 II I 0 to 3-f---1t--t--t---i---1t--t---t--i---1t---t b i ~.~110 liDl I Il C loG 60 !!..III 1DPERlENT(I10N Hs O[~r-IS (R EXCEEIED I P£RC£HT Of"I'UITHS·DI9Jm~IS Ell.R.LED m EKCEEDED:.IE.R LEOEtIl .Rf.mY .,I i ~TlIR. NOTE.FLlJoI PERIOO WATER 'tEM 1961-1963 WITH-f'fIDJECr.EARLY FLOIol OURATlQN C~VES...i !'.STAGE 11[CASE E-VI.BA5ED ON MOUTHLY Ol5CI-flRGE HARZA-EBA6CO'SlJSIM ..oINT VENTU£I ~as I SUSITt-JA RIVER AT SlJ'.lSHIt£ FIGURE E.2.4.244 (PAGE 1 of.3) ~,,----' 1---=-------------------- ---- ----...:-.-:=--f--- -...-~--..-.~i"':: - I III ~..,m m 111 llD 1 ~---~ I I I I I I I I I I 1011~~ D m m ~~~~~m w ~ PERCENT Of t'mTHS OIS::IilRGE IS Ell.R..lED ~EXCr.m:O KlRCH u m ::J':10· w ~ i ~ o 10 3 PERCENT Of t'mTHS OllOmG£IS EOl.R..lED OR EXC££Wl I1AY lOG Cl ~uw til 0:: W Il.to:l I- W W 11. ~ ~1O'~~iiil!~~~~~~liJ.-' u = -';.-'::l-"~.'----'-"'=~==':10 1=.~~'-=_"""<---_~w ~_ Cl _,__ •~~-I~_..=I I l---f~1--1-31 1 ICl10..... PERCENT OF IlONlHS DISCHA!fi:IS Ell.A.LED ffi EXC£EIED APRIL LEGEt{) r----t---- f------ -- to b lID 'Ill I f------ o w m ~~~~~~~~ PERCENT OF IlONTHS OlSC~IS EIUl.LEll ffi EXll:EIED FEIlAlJlRY 10 ' CJ £5uw Ul cr ~LO~ I- W ~ U m ~to· ~ ~ bl a 103 10· 9 8 ~ 0: !f.I 10li.... ~u. u.... ~10· ~ lr ~ ~ o to J NOTE.FL04 PERIOO WAiER YEAR 1961-19133 HARZA-£BASCO SUSITNA JOINT VENT~E .liE as ____NATURAL -----WtTH-PRMCr.EARLY STAGE 'In'CASE E-VI FLOW DURATlON CLRVES BA5ED ON NONTHL Y DI SCIiiRGE SUSITI-fl R1VER AT SlJ'lSHH£ FIGURE E.2.4.244 (PAGE 2 of 3) I I LOB l lO D ~-Ii! 8 8~"!!If tr I G:: Ie La'~10 6 ....:.... ttl --.-ltl --U.I -...-b.. U ,,.u ~ ,... ~i I'I ~~10 4 I ~10 4 ~ILl~ ~:f M .I i !d o LOJ I i a 103 sI I 0 10 'Ill lID CI :11I 10 III 80 111I 0 10 HI 30 411 :10 eo 10 1IO III lID PERCENT IF IIlNTHS DISClfRjE IS EIlJRLLEO.(R,EXca;lEO PERCEHT IFtoUHS 01 s:HARa IS EWurD ~EXCEEIlEO I '~:i ..ALY LOB 10 6 0 I a E;I 0 M f.i UJ ',,:',.I III tr i ffiw Q..La 5 D.1011 l-t-- W ILl ~-~I iii: U ,......Ui ---:...''"':m lDq104~10· ~ILl ~~i M ,, &I.I ... c 10'a 103 ~C~IIlltJ Hs 01 K:Wft E I~m.R.tln (fi~EXCEEDEO 10'pERi EHr ritm,~DI~IS 'wu1:o r1t I) :•'AOOLsT !.,•LE~tIl SEPfEItER ii,",I I NRTIM.. NOTE.FLOW IlERIDD WATER YEAR 1961-lsm--_......-WiTH-PRO.J::CT.EARLY FLOW IlJRATION,OflVESiIiSTAGEmCASEE-VI.,BASED ONJ10NTHLY OlSCt-f1ROE ~RZA-EBASCD,SUSIM JOINT VE~..lJt£85,SUSITt-fl RIVER AT SLtiSHII£ , ~ FIGURE 2.4.244 (PAGE 3 of 3) PERCENT Of !mTIIS DI9JmGE IS EOllum OR EXCEEDED ~ -=:.-I-.---- 1=--=--=--f-i"---t-- 1---f---- --t------ _. 1-----t--..-.1-- ---_.10-••1-.-.--.--1--••~.- r- ID b b I!III 60 11)III I o w w ~411 ~!Ill ~!Ill ~~ PERCENT Of m.H15 OUDma:IS EOIRLED OR EXCEEIID OOVEt«R -- I----- ..- _-..c...---.--.----r:=I-- ~....--10--......f-•• l-__ -r=t=- - f- - 3 ]08 10 6 o "6uw (/) lr:e 10 5 .... LLI W ~ U..m ~10· i frlo 103 ~10 4 11.1 fi ~ bl a 10 3 ~ 8 llJ tr. ~10 6 I- ~ ~ U- PER~NT OF tlONlHs Ol9CHAltt IS -EllALEO m EXCEEl£D DECE~R LE~I{) f-- --r--- --f----- - -----r-••~--.---.i-••10._i""-- ~ill tl ill !Ill I~;[l 411 o w m ~~~~~0 00 ~ PERCENT Of II(JjIHS OISCHAln IS ElUllL£O m E)(CE£I£D OCHl!ER ~....---.--~ -i"-I--- -.-i-- -- -I--- ---~ 1:::::=i---I'==-L-!:::::=::>--- - J 1_--~ -I---- -I-,. ). o to i lO' 9. 8m Q: jtI lO' I- illu. u..... ~10· ~tr 9: bl o 103 10 Ii o 5u UI IJ) 0: It 10 s I- UI UI ~ U-m ~10 4 i Ul NOTE I FLIlH PER 100 WATER YEAR 1951-1983 HARZA-EBASCD sust TNA JOINT VENTURE .ll£as ____NAT~AL -._.-WITH-PROJECr.EARLY STAGE m CASE E-VL FLO~DURATION CURVES BASED ON 110NTHLY DISCt-JlRGESUSITNAR)VER AT SUSITNA STAll FIGURE E.2.4.245 (PAGE 1 of 3) FLOW DJRAT ION ClflVES BASED ON 110NTHLY OlSCtilRGE SU5ITt>I1 RIVER AT 5USlTNA STAlI~ w m~~~~~m ~~ PERCENT IF tOfll6 DI~IS ElllA..LED ~EXCfiIE} "IlY o m m ~G ~00 ~00 m ~ PERCEHT IF mUI6 DIs:tmGE IS EWHED ~EXCEElID HRRCH 10 3 Ir-:1I:--JI--1-J-I , I ---;tl _:1-1-....,_1,-1 10 6 m-~--~;; 100~miiiii2 8 bl It: lr 10 6 _... I:j IL U... ~1~-~-!1-~-~-~~·~f-~··~-~-~--~-~~-~~-~-,...~.,-~._~~10 4 ~It:___i 1-- M o 10 3+-~L..-+--4--I--+--t--;--r---:!~ o § II) ffi Q.lOS +--1 -l....-LILl.......~t::__1= U IL..-.I -. iii I::J J --=-~~1~1 •'. ILlfi - i ~o ...._.- ~I ! ~1----~--f--1-__11·...l __.10--1-._ (~LO 4 I W ,Ii?1--: ~1--I --+-+---1MI OWl I J o m m ~~~~~~~~ PERCENT Of 1lON1H5 D1SCfAU:15 f.(lJJ:lLLED 1ft EXCEELEO FEBRJiRV LO'-I . o ;--- Z 1 ';"o U ~I---~-I : ~10 ~--,-,-I ! ~:~~,: ~! u I r iii 1"--_I ;\ ::J ~..---1---_1-__....!-,_'-:!l04~I ,----;-'1'"- W &? ~ !rl =....LOG -;=f 9.: 8 ,-..11 tll ~-"-I '--J~'-~lOS -:~J1---,, ti,:'~r I o 10 a I r 1.1 I I Ii ~lill il iii ~,00: PERCENT Of HONTHS OlSCHAfllE IS EllJRU.Ell 1ft EXCEEIJE[) APRiL .LE()[~ I N~n~ NOTE.FLOW PERIOD WATER YEAR 1961-1983 --W\TH-PRO...ECT.-EARLY !STAGE 111:CASE E-VI HARZA-EBA6CO SUSIT~JOINT VENTURE I JUI£as FIGURE'E.2.4.245 (PAGE 2 of 3) ~-----.!J .l~ i _ LO •100 PERCENT IF tmTHS DIOCHllRCE IS Ew:ll..lED OR EXCEEl:l:D SEPTEHI£R .....----_eo .~ --=- - ~-;==._- -- -- ---f-. 1-- - I il b D r.o so b_81 I o w m ~~~~~~~~ PERCENT IF tOn/IS OIs::H1lRGE IS EWUED OR EMCEErED .ll.V 10 6 o 5uw UI cr ~10 5 l- W W il. U CD ~10· w fi! ~ fAo 103 !! 8 »l « Ie 10 6 ~ l1J 11. U... ~1O~ w fi! ~ hi o 103 _. ~ 10 D 0 110 I !-- t-......1"_eo ,-- 1--- - -_. -I"--1"--. o w ~~Q ~00 ~~~~ PERCENT c.:HONTHS DI5CmIa IS ElUUEO m EXCEEIEO .lJNE PERCENT OF OONlHS OIscmtt IS EGl.A..LED Or EXCEEIEO RL0..6T LEGEND 9aum cr If!lOi ~- ~u. U..-. ~10 ~ ~ If trl o 103 l06 a 5uw UJ cr li'10 ~ l- W W LL U m ~to~ i lrl 5 10J NOTE.FLOIol PERIOO WATER YEAR 1951-1983 HARZR-EBASCO SUSITNA .JlINT VENTLfiE .DIE 85 NATLJH~ -----WITH-PQftFCT.EARLY STAGE Dr CASE E-VI FLOW DURATION CLR'IE5 BASED ON MONTHL't or SOllRQESUS1TNRR1VERATSUS1TNASTATION FIGURE E.2.4.245. (PAG,E 3 of 3) La 3 I I lO::Il~~~~~~~~~~~~~~~,2 8 ~8~I 1M Q':I It~10·.........~10·1~=='~~!'!-!'.~'~ill -ttl IL IlL"': u I......u ~1a J I .~1a a ......... 1lJ ,uJ ._- l?-:~-- ~I ~lrl I.M __ o 10'I 0 10 2-f--t-;.....-;+---1-+-+---1--+-+----lf--I o PERCENI ~'lDIfH5 D1Sc~1 IS'WlLUD ;EXrH~O 111I 0 PERC1~r:~fHS Dlm~ISEllR.~[Q mEXCEEll:O Ill! OC10l£R :NOYEI1I::R105.I I lOS 1==.--~f-':~-.':=8 I -U f---- 1lJ 1--.II --u.J UI _Ul __f-,__~._ 0::I I It1lJL..W ' Il.10·""----'---0..10·--.;- l--1-.-- 1lJ ~,--W ~=i=-:!!JII 1lJ I u.J ••- IL I IL- U .....I u -..-~.-.+_-_l_--lf-_+-+-+-+--t__I iii I III 1~i;!i,~mi~~i~~i~~~~10 J I q lOa ~:~1-.- ~I!i I-f-_'~-+_+---I--.J--+-4--I---I---llrlI I trl o LO z •I 0 10 z+---II-'--+_+---II--+_+_I--+_+~ :10 I I 'g b Iii !O 100 10.Q Il 0 60 IiO b,III !lO Iii PERCENTC "ON i-ts DtSCHAlUJ ISiEIlJAU..ED mEXCEEIJEI).PERCENT OFtOlTHS DI~CE IS EOOUED ~EXCEEDtO .[ECEllBe:R I •LElHil JIHJlRV I.I I NAT~• NOTE.FLOW PERtOO~TER YERR 1961-19831 -WltH-PRO.£Cr.STAGE II i (LATE)FLO~OJRATlON CLRVES i i ,..:I !f:ASE E-VI BASED ON 110NTHLY OlSCtJlRGE HARZA-EBASCD ;StlSI1't-¥l JO tNT VENTURE bUt£86 I SUS IiNR RIVER AT IolRTfU\O~S ITE , FIGURE E.2.4.246 "(PAGE 1 of 3) .~l L...:._--' o w m ~~~m ~m 10 W PERCENT Of tKNHIS 0I9J-mGE IS EWUED m EXCEEDED t1AIIl.li 105~~fiiiiii2 8 ~IO'~~~~i~~~~~~!~~ ~lo'iiii~'!~!1~~I I I IblI I Ia1021II I o w m ~~~~~0 ~~ PERCENT Cf HONTHS OlSCHAAI IS EWllLED m EX(EEIEO FEBRlflfly lO ~ 5! CJu tll Q.' ~lG'1 t-= i ,o.t~~i~i~~I~~~~~uJ l:J IY 1 I I IhiI I I ,.-2 I I IolOI I IO~ PERCENT OF to-mlS Ol9:HmOE ISEWlllEO OR Excrmo I1AY --r-'-.- 1-.- -.---- "'- .-----....... r-- III b b iI m &II b D I lOt lOS 10 :J~10 3 ~~ til o o ~uw Ul Ir W Il.10' 1- W W II. U - "'"- .1--- ""iiO: , b b III 10 JPER~NT ~1fOt!H9 D1SDRtt IS EllR.LED m EXCEttEO APRIL LEt£tIJ o ~ U W In IY If 10 4 l- W III IL U m ~lOl i trl o LOt NOTE.FL~PERIOD WATER YEAR 1951-1983 HARlR-EBASCO SUSIfNA .J)INT VENTURE .ll£86 ----NATOOAL --- - -~ITH..pRO.£CT.STAGE 111 (LATE) CASE E-VI. FLOW DURATION CURVES BASED ON 110NTHLY 01 SCt-flRGE SUSITNA RIVER AT 14ATOO DAM5ITE FIGURE E.2.4.246 (PAGE 2 of 3) '--- LO:l I 10 8 ~,!l 8 t 8.......IiiiI l)f Q:I --...--..0:: Ie LO·Ie 10 •- .-.I- tlI .l:j ..-t ...--LL I II. t.J I U....I ... ~LO I !I ~10 3 ~~~ t~I ~ trl I ld-I 0 10 2 ; o to', o m m _~.i m ~.~~0 10,ID 3D ..~"111 III III IlP PEIKENT IF tlONTHS OISCHAlU:!IS ,EQ.R.LED m EXCEEDED PERCENT (F ~'HS DI9:lmGE IS EWUEO OR EXCEEIEl ~i .J.l.y lOIi I I 10& a 0 0 ,5t U UW-I .1&1 II)-t III ffi 1"'-.....!.......ffi --Q.to·I Ill..Go 10·-..-........ .-.r-w I ..1&1Wt~LL I U I Ut-I -m '. i ,lDqlOilI~10 3 ~1&1 I ~~I i~I I ~I I I ; o LO'i I I o lOt :t P£Rjb.r lllDN HB DI~JIS:~ih (J\'ExtEEDED 1m P£JJhrJm.liS OI&::tflR!IS'lm.tb OR'EXCEEDED 110 fm.Gr i LE(£tll SEPTEJ'I£R, I i I NATlJR. !'Il1[.FLOW ~1t1D (WATER 'tEAR lEI-Ira I .-;...-..-WITH-PRO..ECT.STRQ;III (LATE)flOW OJRAT ION ClflVES qASE E-VI.BASED ON MONTHLY OlSCtflROE HARZA-EBASCO'aJSITNA .mINT VENT'lE ~as SUSI TNR RIVER AT WRTr:m DJ:f1SITE FIGURE E.2.4.246 (PAGE 3 of 3) ----.J PERCENT OF tOlTHS OIlnmGE IS EOOUED OR EXCEEl:£O RUlR't --f-.--------------------- ---....---..-_c_ -- I---, "'"-- to b ~60 IilI "Jl III !III I - .... -r---- o w ~~c m ~~~m ~ PERCENT OF tDlTHS DlIDlARGE 15 EflR..LEO (R EXCE£IED NOVEtH'R lOll 10 5 ozo lJ W Ul 0: :t'10 4 .... W W U. U In ~10'3 ~ ~ Mo 102 Sl 8 lH a: Ie 10 4 I- W Wu. u.... ~10 3 W0a: 9: M o 102 PERCENT OF IIONTtiS DI~IS EllJAlLED fJrEXCEEIEO DECEtlBER LEGEt-U ---,- -- t--- -- 1"---'1- ~------I--.--- _.... ""'- tD 211 b ~h ~AJ b l)III o w m ~~~~~~m ~ PERCENT OF ~THS D1SCHAIU:15 EllJAlLfD m EXCEEIED OCTOI£R 10 5 ~n () I1l o Lo IIwtn Q: w 0 4111 t- W W U. u m ~10 1 ~ ~ lrl i3 10 2 10 3 u ~10 1 ~ Q: ~ D1 o 102 Q: III to 4 ill '1. -NATuRAL - ----WI T~-PROJECr.STAGE IlI(LATE)CASE E-VI.- NOTE.FLOW PERIOO WATER ~EAR 1961-1983 HARZR-EBASCO SllSITNA JOINT VENTLJRE .lllE 66 FLO~[)JRATION C~VES 005E.O ON 110N1HLY 0(SC~RQE SU51TNR RIVER AT DEVIL CANYON OAHSITE FIGURE E.2.4.247 I (PAGE 1 of 3) 10 ~•.I I !1011 9 r---~ 51IaI8uI lJS I III lr !,I a:: ~to 4 ..-.Ie 10 • ~--t--.- ttl ·1 III U.I U. U .I u....... ~I ~lO" -I !.;!10 J UI hi - ~I Ii!I~I ~-M I MI 1 ... o to1 I a 10 2 0\0 20 :so &II :II I II)"lO lID 80 \11I PERCE:N1 I.F IOlTHS D1SCHtlFG:IS ~1lR.L£D m EXCE£lED 0 10 ;zo S)4Q :.0 III '10 III !IO 111I PERCENT OF I'mHIS OJ s:HRRGE IS El'lR..lED OR EXCl.'lIED FEBRt.my !t1ARCH lOs I I 10& •1--:;:::=:1----0 -I 0 ..--_..-:=. 5 ,a 1-----._- 1--.,.1 LJ I uwiw --f---1---._- Ul l/) I I-. lr a::w I hin.10 4 Q.10 4 .....I-:t-W hi -W I WLLIh.--U ""I u m 1 In:J I :J!.;!10 J I l.;!10" ~I -~ 1ii ~lrl ,I M o lOz ,I ... •-0 10% -10 g I 0_ill *l III to -~41 IiO l'iO III ~_1 D PERCENT OF IlONTHS DI~lSECUIUED m ,EXCEEDED PERCENT or tOUIiS 01 OCtmGE 15 EQlJlLLED OR EllC£E~D -,APRIl!..WEI)KAY I NATlJIAL NOTE.FUM PE:RlOP~TER YEAR 1951-1983 -._..-WITH-flROJECT.SHIGE 111 (LATE)FLOl-l IlJRAT ION CLRVESICASEE-VI.BASED ON NOtUHLY DISCtiiROE! HARZA-EBASCO ,6US1 nolA ..c INT VENTURE fU£86 I SU51T~RIVER AT [EVIL Cft-lYON Oft1SITE FIGURE E.2.4.247 (PAGE 2 of 3) ,-:------'.~ .~~._~,--"'---:::-='~::;.----.-' LO J to' PERCEHT Of I'OlTHS 01 OC~IS Ell.R.LEO OR EXCEEDED SEPTEtt£R =------t---- --i--- --1------ 1---"'-to_-- ~-- - I m 1Il 4lI I;Q b I b Ii -- ---- -.. t--------i--- I----- o w m ~G ~m ~m w ~ PERCENT Of I"mTHS DI!1:I-mGE IS EWlLl£O m EXC£EDEO .ALY 10' to' 10 3 IO~ 10' lOS 10 3 1O~ 2 8 ~ It: k.l l- I.LI UJ lL U-~u w 0 !t ~ hi 0 j'I 0 ~uUJ IS) a::w Q. r-w UJIi.. tJ III :::l {) w~ ~ lrl 0 PERCENT OF IIONTHS OISCHAn IS -EllJAU.ED lR EXCEEDED AIJGlfiT LEGEND r--:= -.... ~.........-~ 10 «I b_11II !IO I "Ill...- 1--- o ~m ~~~m »m ~~ Pm:ENT Of tUm-IS OISC1Ra IS EWUED lR EXCEEDED Jl..lt.E: u-mq LO I ~ ~ ~o LO" LO~ (5 LO' D 6uw II) a: It to' t If !Z B ljj Ir It'LO' @ 4. U... ~ ~ i M ____NATl.RAL -----WITH-PROJECT.STAGE IIIlLATE) CASE E-VL NOTE.FL.lJW PERIOD WATER YEAR 1951-1983 HARZA-EBASCO SUSITNA ..(]INT VENTLJ£..u.E 85 FLQ~DURATION CURVES BRSED ON 110NTHLY Dt SCt-J\RGE SUSIT~R[VER AT [EVIL CI=t-JYON O~SlTE FIGURE E.2.4.247 (PAGE 3 of 3) FLOW DURATION CURVES BASED ON MONTHLY mSCtilRGE SUStHfl RIVER AT OOlO CREEK m m m c ~Q ~~m ~ PERCENT Of l'KJ'4T1lS DIOCI4lRGE IS EllA.LED OR EXCEEDED AUiR'I 1---+-'-+-I I I I I I 1--1 o 10 m ~~~~~m ~m PERCENT (J'1'rn1liS DI9:IflRG£IS EllJUED m EXCEEDED NOVEtH:R 10 4 J,.__------~...."..--I----..,~F=----1-. t;;:::-..l----- 10 31 ~ lOG 2 8 ~ a:: Ie 10 4 ...- ~wW "-"F I I r I I I I I ... ~10 3 -I I I '--I I ··l··~ wca:: ~l-I I -·-+---1 I I I--J--~-u Ul o 102 lOS __ _ o 1---,-I ,•__I-.__.._z ~.___ o I----__1--.._1--__1-..1--- ~,1-.I Ul 0: W Il. I- ILl W... U lD :J U W ~ <t lrl o lO z I I I I I I I I I I I '.,-,,-,-- I I --;-----...,-.._.I -.;......--..-----J..-.-c=~-,-I I '-,--'--I I -:.-, I !I I ! i I I 10 ;ll All I 0 b.III !IQ 1 f--I 'I I -l--J+----fl I I 1-1 lOZ lo?I ,I I I I 1':1 1 I I i o ~m ~~~I ~~~~~ PE~CENT.Of ~THS DISCHAROq ISIECUALLED OR~EXCEEDED OCTOBER I lo~~§~iiii~ lOS m :J~lOa w ~ ~ M-o ~,~lO'1""'~ ~ til o 2 8 Ii! tr If!La 4 --=_ ~- ill ~=u.r o 6u uJ Ul 0: ~lO'.-w W lJ. U u PERCENT.()'tlONTHS OI8CAARJE ISEQ.JI1lLED rn EXCEEDED DECEH8ER:LE~!'llI• I :NATURAL NOTE,FLOW PERIOD loIATER YEAR 1951-119831 ~I!rH-PROjECT.STAGE tIl (LATE):.'.I CASE E-V1.' HARZA-EBA6Ca,SUSITNA JOINT VENTLRE IJUNf 85 I FIGURE E.2.4.248 (PAGE 1 of 3) .-.........--:-..,---'---·""0,"---'----,----.::::----------..;'---'--' '-_._.-)~...;;;;;:-~_._-_.. o ~m ~~~~~m ~~ PERCENT r.F tDlTlIS D19:.tmGE 15 EIlJilI..Ell lR EJ(Cff!Bl ~ 105~iiii~ 8 ~1O'~iiii~~!!~~~~~-lL ~103t;ii~_~~~~[§~ ¥I I I IlrlI I ICi102,I , , a ~m ~~~~~~~~ PERCENT r.F IIONTHS D1SCHAIU:IS EllR.LED m EXCEElED FEBRlJ1RY La ~ lZ 8 tlI It" ;10'-~.- ~I~li~ilii"i~"i~~l!La 1 IJJ () Ir ~ bl o 10 2 I I I I I I I I I I I --....... _. ~ 10 2 I I I I I I I I I I I~~~~~~~~~~ PERCENT OF HrnTlIS D1s:HlRCE IS Ew:i.LEO OR EXCEEDED KAY 103.L .... -I---= IO'~ 0zCJuW til 0:: W IL t- W W IL U m 1'1 a ~ ~ lrl-0 _..,-- --1-. '- --1----= 10 2Il b g III 0_lb !ll I PERCENT OF I()NTHS D1SCHARJE IS EllR.LED m EXCEElEIl APRIL LEGEtll LOS nzouw UJ Ir ~LO 4 t;j If u m ~10 1 ~Ir ~ blo LOz NOTE.FLOW PERIOD ~TER YEAR 1961-1963 HARZA-EBflSCO SlJ5ITNA JOINT VENTURE ..1JI£86 -NAT~L -----HITH-PRMCr.STAGE III (LATE) CASE E-VI. FLOW [lJRATlON CLRVES BASED ON MONTHLY DI SCIi1RGEsuslTmRIllERATOOLOCREEK FIGURE E.2.4.248 (PAGE 2 of 3) ! 10:1 !!1081~£~~I~~~~~~~~~~~~,~8 "'-I 0 lJf :~~--::t~~~=:f::::::t;;;;J;;;;j;;;;:t:=:t::1 n::I --lr.-- It:'10 4 --100--.~1041~~'.J~~~3~~~~~;~~~I-...f--- ~I ~I.L ,IL U I u§.,§-~to 3 I -~1031~§1§~!~§§~§~§~w ,wo,0~I lr. ~I ~u I UWIm ~__ o to 2:1 I 0 10 2 ,.'I +--t---ll---t--f--+-+--I----t.......-t--fo102IlSl.a Sl III 10 III 9lI till 0 10 m Sl .til ~lIIl 'lO eo lIIl 111I PERCENT OF ~THS OISCHfroE IS EllJr:lLLED rn EXCEEDED PERCENT 1F.1Ol1H5 U1S:~IS ElIR.LED m ExcrEDED .JLA JlB o 10~-:'.0 1Os~~~~~~§!~~m§~i~·5 --~.:5 E - - t:I """'-!III -----~---w I m n::---:.....'..........--lr..........1-W .,I """w ~r-_ n.10',.......CL 10 4 ------- I-I-W WWW I.L IL U ,U m r m c--I-- ~to 3,I ~1031~~~I~I~~§~~~j~!~~§w r---,--w ~~~~M lrl o 10 z i 0 10 Z-t--t---lr--t-+-+--t---lr--t__-+"";"'-f '\0 ~4(]i ~_eo ~I Q I 10 9~.50 &1l 10 IlIl so \1:1 PERCENT Of HONTHS DISCHAIU:IS EOJALLED rn EXCEEDED i PERCENT IF t1IJlTHS DI!DmGE IS EQlR.LED 00 EXCEEDEDWTi..L£GE~SEPT9'I£R,', .,..'.I 'NATlJl~ NOTE.FLQI.l 'i'E...•.RI.OO WATER YEAR 1951-.11963 -----WlTH-PRO.£CT.STj:(jE III (LATE)fLOW.OJRATJON ct.RVESi,..';i CASE E-VI.-BASED ON NONTHL'(DlSCt-f\ROE HI1RZA-EBASCOSUStn¥l ..nINT VENTlRE ..u£86 SUSlT~Rt VER RT GOLD CREEK • ,..-.,....--..j I FIGURE E.2.4.248 (PAGE 3 of 3) .------"..'-'-1-I. .- ----------------:.......~ I.__.__---=:' o w a ~~~m ~m 00 ~ PERCENT OF I10NTHS D1~15 Ell.lRlLED (R E.XCEUEO OCTOE£R =r= :--=- -_. ~..----.......---+-~ - --i I-- -- - ...-.----._..._-----. - 10 ~0 b.1O so IPERiENTOFJOiliS01ISEllJIliED(R EXCfEJE) o w m D ~~•~m m ~ PERCENT Of I1[}lTHS DI9:HMGE 15 E£l.R.1f.D OR EXCEEllO OOYEt&:R PERCENT IF !'mIllS DIS:~IS EIlRLED OR EXCEEDED .RUlRY 1-.--.....::;j -- .-1--.- .-..- -1-.----- -- .- ~_...--_.-.1--•,----- -- 11£b m 10 Ai .!II ~lb lO 40 ~I I I I I I I I I 1--4--+--I I -4--+-+---1---1--- 10 3 lOll _~iiii 10 3 I I I I I I I I I I I t- W W lL U ID :ll~10 4 W ~ i III D ffi Q.1011 o 5uw U) 10 6 ~-...._-.-----r--~--~.-_J.~10 4 ---;:: W •_+-_!i _ i lJU) o 2 8 1M ll:' ~10 6 ---...w W Ii. U ~ LEGEt-.OOECEHBER lOll lOG o 5 l:rl In 0: ~10' I- W It u-m ~10· i b!o lOi 21 B tll 0: jtI 10 Ii .... ttlu. u... ~10· ~ ~ M o 103 NlTE.FLOW PERIOD WI=llER YE~R 1961-1963 HARZA-EBRSCO SUSI~JOTNT VENTIJlE ..JUl€86 ____NAT~i=l. ---- -W1TH-PRO.£CT.STAGE III (LATE) CASE E-VI. FLOW DURATION CURVES BASED ON 110NTHLY 0[5Ct-flRGE SUS IfI'Jl RIllER AT SlJ'ISH I t£ FIGURE E.2.4.249 (PAGE 1 of 3) lOU I I 108]~~~~~§~~~~~~9 ,51 ~B 'I o' »I I :~1--1-+--+--1--1-+-+--1---4--1 ~to Ii 'I I ~lOs - ~_.•.-_..I ---...••._.___ w wWIW~I ~ ~!I I ~ ~I '~10 4 ----.----I---I-!-..l__~10 ....---_.-..1-_- ~~ll'--I--lr ~~hi I lrl _ o to 1 I I 0 10 3+--1f-"--+_+-~1--+_+-_1--4_-I-~ o w ro ~~~!•~~~~G m m ~~~~~•~00 PERCENT OF tOlH£OISCHR~IS:E(1jl:lLEO IJUXCEHEO PERCENT (f"t1lJUHS D1g:HARGE IS EW\..LED 00 EXCEEJE) FEBRlJARY I tACH tali i l061~¥§§t~§~~~~~~~~~o --::::-".-----z -.: :0o-5 --._~ (J ':'----u~I I ~__.:_ er I'0:w W;1O~1~~~!~!~~~~'~~~~§~~~~~10 5 ~_..-I W .___W I W _- LL I u.'.._-._ U 'I '(J ---- --I _---_ m ..I I aJ ~....~10 4 ,,-.......----''~l0·t~I~~!~~~~~~~I~~~~~,~-~I i M I -~ o La 1 0 10 3 +-~I---+--+--+-~f--+--+--+-~I---I 10 ,~I I 3 0 CD 90 I 0 i I 1)liO &0 0..E 1 D PERCENT Of HONTHS OISCHAIU:IS ElUl.LEO OR,EXCEEDED !PERCENT OF tOITHS 0I!DmGE IS EGlJUEO 00 EXCEEDED ~.~~~ .'',I i NATIJlALNOTE.FLOW PE~UOOIWFlTER,{ERR 1961-1:98~~HI,fH-PROJECT.STAGE III(LATE)FLOW ClJRATJON t~VES CASE E-VI.BASED ON MONTHLY DISCtflRGE HARZA-EBASCO SU61TNA JOINT VENT~iJU~B5 I SUSIT~RJVER ATSLNSHlt£ FIGURE E.2.4.249 (PAGE 2 of 3) --------.:--)'-='-~- ·.l~.-__---,-------:::=::..::::;... }OO~~~ ~1O"ii~~~~~~~~~~~ ~J ___~10 4 W o J JIrI~ ~ -I I I I[J 10 3 I I I I I I .I u- 101l~~iiii~~ ~lo~t~~iliJ~~~~~ 'l'I I IMI I ICi1031I I I I ~ B ---JlH ~...~It'10'....,.__~---~1--=-~t-11. o ~m ~~~a ~~m ~ PERCENT Of t'CHTHS D19:1-4lRGE IS ElllR.LED OR ExcrElEl .J.Ly106~~_.o ~ U W (J) Ir WIl.}Oi5 __ ~--W ----...; W -II-_ U ---m ~:::J~10 4 I ~. i lrl o }O 3 -1--11---4--1--+---..11---+-+---1---..11----1 I liO 60 I PERCENT -Of ~THS DI9:HImE (S EOI.R..LEO OR EXCEEDED SEPTElt£R 10 It iii lb dl liJ fl liD 90 lID PERCENT Of t«lNTHS OISCIf1RlE IS EGU¥..LEO l:R EXCEEIED j:U)£T LEGEt{) 10 &-- o w ~~~00 ~~~~~ PERCENT Of HONTHS OISC~IS ElUl.LEO l:R EXCEElEO ..a.u: CJ fj l:d Ul 0:: UJ 0..10',__ I;j --w --_ 11.~... U ~ m :::l~104§~~~~~~~ ~ bl... o }O3 1 I 1 , I I I I 1 I I NOTE.FLOW PEJUOO ~i£R )'EM 1951-1983 HARZA-EBASCO SUS I M JO (NT VENTURE ..u£85 ____NATLJR~ --- - -WITH-PRIl..£Cr.STAGE III (.LATE) CASE E-VI. FLO~DURAT10N CURVES BASED.ON NONTHLY 0 [SCt-JlROE SUSlTt-A RIVER AT SLNSHlt£ FIGURE E.2.4.249 (PAGE 3 of 3) t--+-1 I I I I I I I 1 II 1 I -I I I I I +--. 1--1 I -+1 I -f----f I 1----1 o w m ~<Ill ~•~~~~ PERCENT Of KNTffi OISHlRGE IS EGUlLED lJl [)((£E[(O NOVEKER 10 6 ~m~= -.._- I I I I o 103 I I I I I I I a 5 Iii Ul ffi~10'~~~~~~~~~~~~~~~~~~~~ u ~------.-.----:::;r--"+-.__....__r:10 4 I . I w~I Ii-- bl o 10 3+----4f--I--+----4f--+--+----1!--+-+~ 10 zo <Ill liO 611 I PERCENT Of"IDUIfl DI!OIlR{lE IS EIJ.R.LED ~EltCEElEl ~ ~ou ~~cr ~10'_ ___ I-.~I-.W __W ~...:----.-......--........ ~10 4 L-.•I-~I-_.t-.cr t-T~ bl I I I I Ii ~~~~~!~~~~~PE~NT Of IIONTHS OISCHAROE IS EQJALLED rn EXCEEDED [E(~H9ER LE£l:l() to l -+I La' to 4 I I I-I I I ~ o w m ~<Ill ~~~~~~ PERCENT OF IlONTHS D1SCHA!tt 15 [WALLED rn EXCEE£.EO ocrOEER[106 I i _ -'I 'I IolOaI I I I I I; u mq to" ~ ~ M a Eiu ~IO'~~~ii~~!~~'~~f~tt ~ ~u ;;10 a[J=--t-+-:l--!-+t=tj~I: 9 £3 l)J n::te 1-. ~ LL U... ~u I I I , NOTE,FUll4 PERIOD ~TER YERR 195111~3 HARZA-EBRSCO SUSI TNf:l JO INT VENTLIlE Jl.lII£as i ' ____NATl.ML. -----WITH-PRO.£Cr.STAGE 111 (LATE) CASE E-VI. FLOW DURATION CURVES BASED ON MONTHLY OlSCt-flROE SUSlTt-fl RIVER AT SUSlTNA STATIOO FIGURE E.2.4.250 (PAGE 1 of 3) ~--/ r- -------- o w ro ~~~~~~~~ PERCENT Il'IDHHS OISCHAliGE 15 EIJ.RLEO m EXI:EEII:D FEBRIJlRV - ------I"'--.1--------....-.,.-- I-. >.---~.-- - -- '--I--......r-....--1-----~---f-o -.1-_- ID iI i IS ~ClR.&o mllll EX~IPERCENTOFtlONl1'1S 01 ScmR PERCENT [J."lDIfllS DI~ISEWUED OR EllCEEDED "AY --I------- -, ----.... - Ib 0 b b &II ~II !I Q W ~~~~~~m ~~ PERCENT Il'HlMHS 0Is::HARG:IS EllLR.lED ~EXCEElIO IftlCH ,.----10-·--....--------1--.-- ::.: I--- 3 lOD o ~ l;j II) 0:: If 10 5 l;j W lL U III ~10 4 W ~ ~ lrl ii 103 2 8 IH 0: ~10'... I:J ~ u.... ~~10 4 ~ ~ h1 Q 10 3 10 6 LE(DI)APRIL. La • or.; uw Ul IX ~10~ I- W ~ U m ~10 4 ~ ~ !rl o 10 I La 6 9oum IX lfl lOL .... ill... u..... ~10· uJ Ii ~ hl o La 1 NOTE.FLOW PERIOD WATER 'fEAR 1951-1983 HARZA-EBASCO SUSITNA JOINT VENTURE JUNE 85 NAT~ -----WITH-flROJECT.STAGE 111 (LATE) CASE E-VI. FLOW [)JRATlON CLRVES BASED ON MONTHLY DtSCI1iRGE SUSIT~RIVER RT SUiITNR STRlI FIGURE E.2.4.250 (PAGE 2 of 3) 10 J+---'-'-I--,-+-'-+--I---'--H-""-+r--+--+---ir---l I EQ.ALEll lR EXlEE!ED LEO,EtU .1== ~~~.~~~.~~ PERCENT Of tOITHS Dl S)IlRGE IS EWUED DR EXC£E1El SEPlEtf£R o m m m ~~m ~•~~ PERCENT OF tOITllS DIs::HmGf IS EWU£D DR EXC[EW) .u..v 10 6 'b·;t 1==1=' 100~iiiiii -I I I ,o 10 3,,I 1 I I I a tiu W III 1----1r-:- Q" ~1051~~~~~!~~,_~~--~1 ~tiw... u-m ::J ':10 4 >= W ~ ~ OJ 2 8 III (Ie __ Ie 10 6 •... ltl... u ~~~0 4 --':1 .. ~: ~.J _I ...J U i I I I IIII1.1 I 1a103J. ! 10 4 I , I ... o 10 J I I I I 1 I i :1 I I I Iom.~~~~..~~~m ~ PERCENT (J'1D41HS OISOiAIai 1SIEllR.LEDlR EXCEElED .u£10 &! I, ~ B lli It: ~ I- ::l lL U... ~ ~ ~ hi oo kIIIIIl'fij~lOa ".~ W 'i WlL ... u...ma i hi...o NOTE.FLOlol PERIOD!WATER 'tEAR 1961"'11983; HARZA-EBASCO SlJSITNA JOINT VENrI.JREI~as -:"',-----.--~~~~o.£cr.STAGE 111 (LATE) ..CASE E-VI.. FLOW DURATION CURVES BASED ON MONTHLY.DrSCI1lRGE SUSIT~RIVER AT SUSITNA STATIOO FIGURE E.2.4.250 . (PAGE 3 of 3). --~. EL.2150 F1._ EL.2108 F.!.,__ MINIMUM OPERATING RESERVOIR LEVEL "(EL..2065 FT,)EL.2066 EoT\:-.25 FT.(TYPICAL) 1- EL.2024 F~__ EL.2012 FT. WAT ANA MULTILEVEL INTAKE STAGE III FIGURE E.2.4.251 GO , I.Ii Z.49-~I:"Q~-36 1 2" t1 12 0.6 i III.I ~ 0 0.0 II ~"1~~EL.l II ••cl ~~L Z •II.I III .-I l-I I~i--. I I t:!.K VIlL~_I I ~ILUJI\Y I I 15 I I .1&, i ---I,I ,auf0-eiII-t~I 'T1 1 ~I i r,, 1------1----\?ld Ii I .,'I f'\,~lO r 'fI ",10I -tI,1--._---..---rllI-;'IV,'/I 3:cr -------.,.;.I I l'..--J!IX ':./,I ~~i'..---c--- uJ II ,,,;.I )JQ.---....,-I I I ..,,''--....DT."\ , uJ --.-i I-Ii I V I '-\.\11 . s ~0 ,,../I o"V I ."I -. ..J ./I ,\\----1,u.I-t'!\\ I ~I--::J --(/ 0 ,I ,\I -, I •!0 I 0 MAV ..AJN .Jl.A..I !'l.r.GEP OCT I t¥lV O£C .IAN FEB KM IlPR I 1961 1962 I I I iLEGOIl,CAbE •••OCBI20E -DEVIL iC~ON OPERATION W/WATANA lIN LATE STAGE III.ALASKA POWER AU1HORITY PREDICTED OUTFLOW T~~RATURE •-- ----INFLOW TEI1PERAiUR£i.lll.IlHNIl Fm-LCT I OtIiEStt tUlU. NOTES.I.INTAKE PORT LEVEL I AT IELEVATION 1426 FT 143"a.t HI DEVIL CANYON 2.lNTAI<E PORT LEVEL.2 AT ELEVATION 1376 FT .419 10 HI LA TE STAGE IIIa.CCll£VALVE AT El..£VRTlON S90 FT lacll.15 HI 0AUJt LOW TEM~~F~T~en4.GPILLWAY CREST AT EL£V~TlqN lAO ..FT ."27.94 HI D ICE GROW H E- !i tmll=\-Es:s:tl ..DINT VEtn~Eii I o:1I1C_.1....1>&1..'p-...._I 4l-01~O4 FIGURE E.2.4.252 ./ ._---<~, -----'-'.'--' _.._."._--.._-~---'- --_.-------~.._-.----. --'---.-.-_._-~._.-.-~-~·--i ----"-~,- GO I., Z"8 --1-1.0 fri-ali ~".I 1-0.6 i Ul2 >oJ 0 0.0 ~~~m 1 t F'3I-J I I SfJ~~;:s , IS 15 !-'----~U r-'- ~,I -i-T\,I-"I rI~W I',,I',II,.~0:10 ,....jV,..;p~~,10 ::J , I -i,--f"1-~.,~i ------1~I ""ft .J:CI I l ~~,'I ,n A.I J\D::'t,\tt Jr \,Jl·/'w·v ~._-----'0 W " m n...--~.-;:0 L I,,''l ./i/V,"'\.D W 1--.c----l I-Ii ,,f .,-\c."!i ill0I~......\ ~I !----- ...J I I IJ..I II ,---~l-I ,--n:J ,"0 ~ ,,, 0 0 HAY JUN ..LIl..AW GEP ocr NOV DE.C .JIlN FEB HAR l¥'R 1982 1963 LEGENl,CAGE ....OC8120E -[£I/IL CANVON OPERATION W/WATIlNA IN LATE STAGE III.ALA5KA POWER AUTHORITY PREDICTED OUTJ:LOW rIaf)ERAT~ --- • - --1"-Fl.OW TEIoP£RATUlE 6L6HNA f'lO..ECT I IltIl[5lt lUlU. t.lQT£S.I.INTAI<£PORT LEVEl..I AT Iil.EVAltON 1~2G FT 143A.34 HI DEVIL CANYON 2.INTAI<E PORT LEVEL 2 AT EiU:VAllON 1376 FT 1419 10 HI LATE STAGE III 3.eCHO:VI-l..V£AT ELEVATION 990 FT laol.76 HI R'IJ~~gw TEMPER{}~.lmt~.GPILl..l<IAY tRiGT AT EL£VAT ION 140<4 FT 1427.94 111 ~ZA-EBASCO JOINT VEN1~E lOMJe-.lUI....It---.4l-01~ FIGURE E.2.4.253 u ~_"I.O~ EI:J--151~~~§~~~~ES~~~~~~E~~~~~~~.i i i •j j I IS o -t I DEVIL CANYON EARLY STAGE III OUTFLOW TEMPERATURE AND ICE GROWTH (E-VI) l41UA-ElRitO .JlINT VEN1lm: lilJlllNA l'IIlI.£CT I 0ItlD\It IGlEl. ALA5KA POWER AUTHtRI TYSTAGEIIi. NOTE&.I."2, 3.,... ~m a .:'I I'•Il~!3 ffi ','(':I i\..I.~,N ~ffi •"IV '1 ~I ,,"•I --........~ ~G"r '"I ••'"I [;~~'J'1\JI '..-I,"Pl~'/1 !'!\ ~I,...,,I ,..1. 6':. o I I I I 'I I I I I 1 I 0,.~~I~t~~~~~I~I~~~ I l'1 '!':i 1981 1982 I 1.£0£/>1).0:1&£...DCBI02L -DEvI'L et:lNY~OP£RATION IUIo4Al~A IN EARLY • --"---PREDICTED OJTFL(I.IIT&:~ERAlUIE " • - -----IIIFLDw TEtFERATlAi:I , INT'*&PORT U:IliL.I'l AT ELEVATION 1<42fi FT 1.113<1 .•4"1INr~PORT I.EViL 2 AT &L.EVATION 1a7S FT '.1119.10 "I ctINE V~VE AT ELEVATION 990 FT 1001.15 HI ' IiiPIL.LWAY CRiST ATliL~VATION 1404 "1427.&1'111 I ',CIlI_.IU._I"__I c-ot~ I FIGURE E.2.4.254 ~-'-"--"~ ____'"-----L '----~o...--J "~'' IiiiO I.Ii Z4&- 1-1.0 J;l--36: I"'1Ik I-O.6.i~12 'oJ 0 0.0 G,n:a:=t~-1 I I I I I I• 16 16 -gU-I~••",-'..rI•~,.'..LtJ I . 10~IO ••. ,'.I.f ••-I•"II fT1.... I -I ".,~I \I /'v,3:CI "'I ••"'"~0: t'',IIl I ,~,-j "LtJn.I",'I I OJ ,..,,'\...D:E ••-IW•r ~.-J ,-"-6 ~....6 II " 9 .~/'•~•I, U.,II I ~....•I 0::J ,.....,0 0 ", 0 HAY ~..u.A.JG 6EP ocr NJV DEC ...-:IN FEe lIAR ~ 1982 1963 .. L£ClDD.C~.IIlI OC8102L -DEVIL CANYON OPERATION WIWATRNA IN EARLY STAGE III.R..ASKA POWER AUTHCRlTY PR£DICTiO OUT~TEJ1P£AArUlE 8l.S1~FfIO.£CT I DrR£IiIt IGlD.--- - --- I t-FLOW TEIotPiAA'T1.JIE DEVIL CANYONNOTES.I.INTJ:lI(£PORT Li'JEL I AT ELEVATION 1"'2&FT l"a4.a.4 HI EARLY STAGE III2.INTJ:lI(£PORT LE'JEL 2 AT liLiVATION 1a76 FT 1419.10 HI OUTFLOW TEMPERATURE3.CClt£v~VE AT ELEVATION 99D FT 1301.16 HI AND ICE GROWTH (E-VI)<t.liPlUMAV CRiir AT EUVATlDN .40..Fl 1.427.9-4 HI HARZR-EERiCO ..JJ I NT VENTtJiE--ILI._In --I 4I!-oI~ FIGURE E.2.4.255 I I _liQ I I.G Z~I 0=3G I 1.0 ITl I 24 I U1 •O.S :i U 12 -+----t-----I~_r__+_-__+_-__+___,-+_-__t_ o 0.0 ~~::~~rtl i I I m r I I 15 I I I I I I I I I I I I I I 15 --- ()----....--- I!?- I ."-;-; 1--'I 'I i "T1UJI ,,_'.I rcr\0 I',0 ::J I I \rt 'I',~~,1\"10 cr I ; I I '\.1 v ....-l0:Vi ' I I ....J'rn~,\,"I '!!/;\;~"'-....~ 1:I ."A I ,V I \II'InW•'1 I",~I ~:::0~~,.I J\.J L '-'• " \--.;...D:>""--I~'"~-V I J ,-''-..Ii ~ ..J ''L~'I '!\rn,\1 ~ u HAY,~ 1961 1982 i ,,, LEO[t.(),CASE.IIIlI OC8120D -OE':'IL :C~ON OPERRTION WIWRT'ilNR IN LATE STAGE III. PREDI CTEO ClUTFLeJ'-rEMPERAT\JlE:I -----..,I ~LOW,TEHPERR'TURE.i I NOTES,I.INT~PORT LEVEL IIAliELEVRTION 1~2S,FT \4~.34 HI 2.INTAI<i PORT LEVEL 2 Rl'ELEvAllON 1376FT 1419.10 HI 3.CONE V'LVE AT ELEVtlrIO~990 FT laDl-ili 111 .:sPILLWAY CR£;r AT ELEVATION 1404 Fl .427.94 111 5.FOR COMPARISON WITH !PROPOSED PROJECT. ALRSKA PO~ER AUTHORITY 6Lli I rNA "IlO..ECT I 1JfRCi/1 tUlU. OEVIl.:CANYON LATE STAGE III OUTFLOW TEMPERATURE AND ICE GROWTH (E-I) ~ZR-EBRSCO.nI NT VENTURE CMI~.1u.1lG••In -..r 4Z-01~ FIGURE E.2.4.256 ~''---~L-'~---------.;',----'-'-:";'~---' -~----------~------------ ~_._._~'.-.---~-_..~-..'------_.--._-~~--~-.'--_._-------_.-_.-- GO 1.6 :Z ~Q -1.0 rn-·-ali I I 2~ ~I~II&-0.5 :i ., 0.0 12r1ttJtt::=tt1--tfj [l-J I I 15 15 -0 U C ~,,--I----"I I'..r,1--._-f------Q uJ I .,"..-Af'....::i ~10 ,'."-10. I',"t~'-i.f-.-----.-fTlI- -I ,['..\,\."3:a , "~j..I ..Ull: -'.\tf -._.----- uJ .,'.I '"III " ,:un..__._-----.I··..·...-_.. I"•1\"\D;;:,,....-··1W..,r IJ i~.,-\~XJI-5 .,. B .A ~,(II 1--;"-,---l--._-,_.------._-_. ..J I, U.I ",o.f-,,()::J --_.- 0 I ,~ ._..-.._.-,,, 0 0 ~y ..uI .JU.~SEP OCT NOV IIC ~FEB MAR WR 1962 1963 LEGEt-.()·CAGE •••DC91200 -DEVIL CANYON OPEQATION IUWAHINA IN LATE STAGE Ill.ALASKA PO~ER AUTHORITY P~ICTED OUTR.OW TEMPERl=lTURE 61611 NQ FPO..ECT I 0't'Il£SK I'IlXl.•------I NFL-OW TEMP£RA1l.JRE NOTES.I.INTl:\I<E PORT LEVEL I AT ELEVAlION 1~Z6 F1 1~3~34 HI DEVIL CANYON 2.INTAKE PORT LEVEL 2 AT ELEVA110N 1376 FT 1~19 10 HI LATE STAGE III a.CONE VALVE A1 ELEVATION 990 1=1 l:acJI.76 HI OUTFLOW TEMPERATURE 4.6PILLWAY CREGT AT ELEVATION t404 FT 14Z7.SA HI AND ICE GROWTH (E-()5.FOR COMPARISON WITH PROPOSED PROJECT•.HRRZA-EBASCO JOINT VENTURE CM1 tJaD..Iu.It.al.Jrr .._.oIl-OIO-04 FIGURE E.2.4.257 >-1IJ I4l ~....j w S-6 ~ct .J ...15-"",f5POWERHO~SE INTAKES ~-~=~J:0 > t->ct:~ii rm ID.:J 5 u::... c:w Q.«z 7":e tJ)~~~ I I :X .....~itJJ~~CJ::t ·~.1- &?...~i !a :lIIa:I-~-'IfIx:a:II jI~I: --+-1 !tJ)::I LIJ !'oJ •I i u:~I--~!I i rt.g j i I I I !iIIIi ••I I ;I i !i !I !: 1 I I, ==•: j I !I W \._I i [C)« II ~I-en_.I 1 WI!I l- I -«~...I--,J i I ,1 -ZIl"i -,I !..J,I .+..:.w lj--t---u \,I I ~>-•I i I i I ZWa:,i I ~U,, .-_.---..I - 1 -----_...--I=-.J._."-,I l2 -\>.. w ~II)a.LIJ,ffi .......J:x .... I-~Z..0 0: lJ)....,Q.•I- \0-W I a:lr,.-1 __w J...l-i---!a I- 0 cr :/-lr -1-------_._~tz 1-[---.---.-._-•.._.--"'.-a w 1---..z----a;;-----_._--- --1---,----!1--cr :i:1-..--,_._---w---··----·---_•..•.._-_._---1----[---- J a t-.............. :::I o3S~~ I UJ~"""''- I-- [7 ~u ~>-.->-...J N oa::J:J-~:I:J'"1CDa:a............ :::I .._.,... I•I•-I 0 ~.. I I-I I~~~~0 w W I ~~IiI I I I I[SC:l313W)-W01108 3J\D8ld lH013H u .J , '\ 1 ,'J J ,) ---~.---------------~..•--'--~------ ~----c __ '~_.~--.------------"~~._---'~--- 2liO "U 0 J: I 11I1 ~ •-_#0 200 ~......-""-..2 ~r" _L"--11 3 .....--"'-K!~........z II"-lW,-"......-~.--..--wr ":....Ul -;ISIJ .... r ~( 0 ,l- t- 2iS w>~IOO t--- [5...... W I SIJ 0 a 5 10 IS TEMPERATURE-CCELSIUSI ALASKA POWER AU1HO~11Y CASE.1111 I-lAB1ZCl::-WRTANA OPERATlON W/[£VIL CANYON IN LATE STAGE III 1111 lI\IiUNR FRQ..ECT I DmfJiI1 PfllU LEGEII()•WATRNR RESERVOIR PREDICTED TEMPERATURE PROFILES'TEMPERATURE PROFILES1AUGUST1981LATESTAGE111 .._------1 SEPTEMBER 1981 l-mZA-EfRiCO ..KlINT VE~Tl.AE-----1 OCTOBER 1981 ."•.-.....IMI'.It.--I Q-oIG-04 FIGURE E.2.4.259 I I I 2SO Ii i , !, I I !I "tJ !,!0x:....I i I II.~--_.-.---I i Ii 0---I ~2 ~200 I -I I Ii 1II 3 ....z&?I I 11 4 -iIIWIII~~iWx:, I Ii U1 -;160 ".ix: "0 I',lo- t-~i , w i '.>!~100 i ~i i~I i -......Iw:r:,I SO I II --I I I I '-- 0 I I 150,6 I·,10 I TEMPERA~URE-(CELSIU51! 1 I ALASKA PO~ER RUTHORITY CASE,••WR812CE -WRTr-lNA OPERRTlON Wlt:£vILI CANYON IN LATE STAGE III ••8l.IIlT~mo..ECl I UtR£.Sl1 IUJn. LEGEt{]I I I I ~AT~NA RESERVOIR PREDICTED TE~PERATURE PROFILES.i TEMPERATURE PROFILES1NOVEMBER1881LATE'ST AGE 111 --------l DECEMBER 1S8l I-MZR-EIRiCO ..JllNT VEN"~E- - ---1 .JAt-URRY 1982II C..lt....lUaIl-ll'.It-.....-I Q-Qlo..Q4, j'------' ,----.------~...............-----:'---'~ --"--, --~----'---.----~-~-'-~-'~.__.~-_/ 260 "U 0 1: fTI lal ~-0 200 ~2 ~~~..-..11 3 ~--8?zI"-iW~rwr \lJl I ISO \z: 0rr @ LLI .....>~IOO r:r 0..... W -:r SO -------- --f·- -_. 0 0 5 10 15 TEHPERATURE-(ens]us I FLRSKA POWER AUTUm]TY CASE I 1111 WAS 12eE -w~mNA OPERAT I ON W/[£V 1L Ct:l"lYON 1N LATE STAGE III 1111 6l6UNR AlO..ECT I [Jl'R{b/1 IUlO. LEGEI'IJ I WATR~A RESERVOIR PREOICTED TEMPERATURE PROFILES:TEMPERRTURE PROF]LE51FEBRUARY1982LATESTAGEIII .._------1 MARCH 1982 HRRlA-Eg:a;Q JOINT VEN'T~E-----1 APRIL 1982 CloUUDI ..tu.tt-a..'"......_,4l-oI0-04 FIGURE E.2.4.261 i •I i 2GO Ii i i -U I ,ax: !fTI 11II1 ~,a 200 i 11I 2 mi_.-1--...".~ -,, i i J "11 3 ....I Zffi- i'11II4 -l l-i •~I.lJ .; x:II .,'UI 1 160 "r \.0 il- I-i@ Ii I.lJ "'->~IOO [ l-i ~.....iW J:I I :I ---- 50 i I i i I I i Ii ! i 0 I ! 0 I 5 ,10 15, I !TEHPERATURE-(CELSIUSI,I !i I ~ALASKA POW~R RUTHORITY, CASE I ••WR8t2CE -WRTPN8 OPERRHON W/OEVI CANYON IN LATE STAGE III ••W1ITN1l mo..ECl J lJtR[Sll IUI8. LEGEI'OI i i WATRNR RESERVOIR I PREDICTED n:MPE:RAT~E PRCFILE5:TEM~ERRTURE PROFILES1MAY1982IiATESTAGEIII------_.1 JUI'E 1982 I I KlRZA-EeRStO JlINT VENT~E-----1 .JULY 1982 i CWICIGI.1L.LN3••p......-I 4:-010-04 FIGURE E.2.4.262 -'__---J , '------'-'~~"'"'',~--'--'--------'">-------.J _____ .~-------~-~~~-.~----~--,-~- --"~-'----__c ------~._--"---'-~,--~ 2GO --0ar I r'l...llilll ~ i L:.,a 200 .2 ffi•L'_.--~-~I .3 .... ffi ..__.I --/II Z4---i t-..d:.--~w:r ~"UI -;-150 r 0.... t- @ W>0 HlIOO I- 5.....w ---I :50 ---~----._..~-- i--.-----t---- I --- 0 0 5 10 15 TEMPERATURE-l CELSI US I RASKA PO~ER AUlH~ITY CASE.'Ill.~1=l812CE -~I=lTANA OPERAT[ON ~/I:EVIL CANYON IN LATE STAGE III ••8IBITNIl I'llO.£CT I lJfR£SIt lUln. LEGEl'V I ~ATANA RESERVOIR PREDICTED TEMPERATURE PROFILES,TEMPERATURE PROFILES 1 AU()JST 1982 LATE STAGE III --------t SEPTEMBER 1962 ~ZA-EBASCQ .JlINT 'lENl~E-----t OCTOBER 1962 c...t.NJa.Iu.,......Ir.""_I 4f-0l1}-~ FIGURE E.2.4.263 NOTES: '1.CLIMATOLOGICAL AND HYDROLOGICAL OAT A PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MUL TI-LEVEL INTAKE 3.STAGE 3 OF 3 STAGE PROJECT 4.AVERAGE WEEKLY VALUES 5.E-VI FLOW REQUIREMENTS 6.DEVIL CANYON DRAWDOWN OF 50 FEET-2 LEVELS OF SHUTTERS EGEND SIMULA TED NATURAL TEMPERATURES - - - - -SIMULATED TEMPERATURE~ STAGE 3 OF PROPOSED PROJECT SIMULATED TEMPERATURES PHASE 2 OF,TWO STAGE PROJECTl,CASE C FLOW REQUIREMENTS (FOR COMPARISON) ,~...J,. ,".,,. :'.~~:---.I'", • •:,,\.\".".f,I \)\AI"I ...... /,1 ",'1 "y /' ".,/.../~II\.\"".~.....----r'~~.r-,"~I C ...::"\'""".,,' ,j \ ' \I• •I ' \'~ I II1 I i I'~I :,:1"\:4 , ,'1 ,~ ! "I '..~ ,'\ ".. ~~L_I I 4 2 o 6 8 12 10 C D E G R IE E S FIGURE E.2.4.264 AL...SK ...POWER ...unfORlTY SUSONA.Hlt.WJtXllCtfnc PROJEct SIMUL ...TED SUSITHA RIVER TEMPER ...TURES RIVER MILE 15D LATE STAGE III ~.:..~I----I-I'- i I I I! MA Y JUNi JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP,III 1981 i 1982 ~---------------'------''.~ ___0 ..------1.;'---'-~--',-'~'---/.~'---' LEGEND 4.AVERAGE WEEKLY VALUES E-VI FLOW REQUIREMENTS DEVIL CANYON DRAWDOWN OF 50 FEET-2 LEVELS OF SHUTTERS SIMULATED NATURAL TEMPERATURES SIMULA TED TEMPERATURES PHASE 2 OF TWO STAGE PROJECT,CASE C FLOW REQUIREMENTS (FOR COMPARISON) -----SIMULATED TEMPERATURES STAGE 3 OF PROPOSED PROJECT "#.I "',...fY"r·',.1 \,,/".."I I II \.............I "//,'"~/',f ';'\1 V ~ ."",, \ '~\~ ~""'~'~ "1~ , I I I I I•I II /,' "f "f, I I I I I I I I I I I I I I I I ,I NOTES: 1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE MA TCHING POLICY FOR MULTI-LEVEL INTAKE 3.STAGE 3 OF 3-STAGE PROJECT 4 o 2 6 8 C D E G R E E S MA Y JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1981 1982 FIGURE E.2.4.265 AlABKA POWER AU1lfORfTY SU$I1"'"Intlnol.UC'htC PnO~C' SILlULATED 8USiTNA RIVER TEMPERATURES R,VER MILE 130 LATE STAGE III ~.:!"...!-·I-----I-I'- AlA8l(A POWER AUTllOlllTY SU';nNA 1m,.\()(He "1'1(rnoJEct SIMULATED BUSITNA RIVER TEMPERATURl!S ,,'VER MILE 100 LATE STAGE III ~~I, ~·-I-,-- LEGEND SIMULA TED NATURAL TEMPERATURES SIMULA TED TEMPERATURES PHASE 2 OF TWO STAGE PROJECT,CASE C FLOW REQUIREMENTS (FOR COMPARISON) SIMULA TED TEMPERATURES STAGE 3 OF PROPOSED PROJECT 4.AVERAGE WEEKLY VALUES E-VI FLOW REQUIREMENTS TEMPERATURES SIMULATED BY SNTEMP FOR PERIOD NOVEMBER-MARCH SHOULD BE USED WITH CAUTION AS AN ICE COVEA MAY EXIST ON RIVER ANDSNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER 7.DEVIL CANYON DRAWDOWN OF 50 FEET - 2 LEVELS OF SHUTTERS FIGURE E.2.4.266 ! MA Y JUN JUL AUG SEr OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1981 i I 1982 I ';I ,I I ,!,I I I ••,I ,Jl!• •I NOTES: 1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MULTI-LEVEL INTAKE 3.STAGE 3 OF 3-STAGE PROJECT e t2 Ie I 1\1 ~'t-/H ~1\ i i I D 8 .!:J ':~i",'\IE '8 ,:..,"..I~I ' "I R ''• I :\\1I"tI'"E I I I , 6 I,',I ,. E f'li "..1- I I " S (I':\ \I \ C 4 J \\, I II 2 ,,--J -------'\--~'---.,;~ 'J--~__\--'-....---.-J .----..'.'--- <-'-- ---SIMULATED NATURAL TEMPERATURES ------LATE STAGE III ---EARLY STAGE III NOTES: CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MULTI-LEVEL INTAKE 3.STAGE 3 OF 3 STAGE PROJECT 4.DEVIL CANYON DRAWDOWN OF 50 FEET-2 LEVELS OF SHUTTERS 5.THE TWO SIMULATIONS SHOWN PROVIDE BOUNDS ON TEMPERATURES WHICH CAN BE EXPECTED DURING STAGE III.AS ENERGY DEMAND AND PROJECT ENERGY PRODUCTION INCREASES TEMPERATURES WILL PROGRESS F:ROM THOSE SHOWN FOI EARLY STAGE III DEMANDS TO THOSE SHOWN FOR LATE STAGE III DEMANDl LEGEND "---',,,,',',',',' I ', 'I r-',~'"\r~',',\,,''!,! I'I,,'J ,II,"//,:,," /' " ./') ,\ "\, \ \ \ ", \ \~ \~:'-----,;\','-......~.,/-_'>-::T":::';-~':.? 'I'• ,.....,,,,, ,,,, "/.., " ,I "I ", ,'I : I \ • ,ai''~ I' 'I~~,I, 'I, C D E G R E E S MAY ,JUN ,JUL AUG SEP OCT NOV DEC ,JAN FEB MAR APR MAY ,JUN ,JUL AUG SEP 1981 1982 FIGURE E.2.4.267 AlA5l<A PO"':'ER AUTHORITY SUSIiHA HTonOEl£c.npc PRO..E:ct SlloIULATI!0;1SUSITHA RIVER TEMPERATURI!S RIVI!R "'ILl!150 STAGE III ~~~=·I----I-I'- $U91HA ~lEC'~f PROJEC.,_ SUCULATI!D BUSITNA RIVER TENPERATURI!S RiVeR NILI!130 STAGE III ! ___SIMULATED NATURAL TEMPERATURES ------LATE STAGE III ---EARLY STAGE III AlASKA POWER'AUTHOfllTY DEVIL CANYON DRAWDOWN OF 50 FEET-2 LEVELS OF SHUTTERS 5.THE TWO SIMULATIONS SHOWN PROVIDE BOUNDS ON TEMPERATURES WHICH CAN BE EXPECTED DURING STAGE III.AS ENERGY DEMAND AND PROJECT ENERGY PRODUCTION INCREASES TEMPERATURES WILL PROGRESS FROM THOSE SHOWN FOF EARLY STAGE mDEMANDS TO THOSE SHOWN FOR LATE STAGE InDEMANm LEGEND NOTES: ,1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE MA TCHING POLICY FOR MUL TI-LEVEL INTAKE 3.STAGE 3 OF 3 STAGE PROJECT _..._\- FIGURE E.2.4.268 1=:-':·-.I --I ..'.,''',,..,,,,,,,,,.,:/'..~:r-Io , (\I",I \I,, , / \J I -,9 ~' ./•r;::1 " \•~, "\ I \,~ \".","..'.,,~,,....,.,-"~"/', \ I ' ' ,.."'I I \'\''I'"1"'\•I /...._,\''IV'"'..,'-11\I.\ ',r"';i " I,I MA Y JUN JUL AUG SEPI OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP[![ 1981 ! t 1982 ,~ ".--..,~"'"' I"',, : •r-~,,,'',.'\.\,,-"./,,.......',.,I '•' \I ',I I •" ",'I"J \.' , t I .' 'I .' J \'• / .,'" 'J i l ~ 4 2 e 6 8 1e 12 C D E G R E E S :-----J ----.J ._-~''-~'-------..J '--~ ___SIMULATED NATURAL TEMPERATURES ------LATE STAGE III ---EARLY STAGE III 3.:1~"",",,/1 ",.!l \I • •V:,...1",If , ~,'", \ \'..I , ~, ,I \\ \\,, \ IIr, I'," I I \~ "\'".I I," I," " \, I , ' ,"","I.',,'/'~ •",,,,,'--I,I I " I'/\'.I ,• II '1":1 ,l " ,)~I , I ",I,\1",I,'\I "I I/I'~ ", NOTES: I I I I I I I I 1.CLIMATOLOGICAL AND I •I I I I I I I I I HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MULTI-LEVEL INTAKE 3.STAGE 3 OF 3 STAGE PROJECT 4.TEMPERATURES SIMULATED BY SNTEMP FOR PERIOD NOVEMBER-MARCH SHOULD BE USED WITH CAUTION AS AN ICE COVER MA Y EXIST ON RIVER AND SNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER (SEE RIVER ICE SIMULA TIONS) 5.DEVIL CANYON DRA WDOWN OF 50 FEET-2 LEVELS OF SHUTTERS 6.THE TWO SIMULATIONS SHOWN PROVIDE BOUNDS ON TEMPERATURES WHICH CAN BE EXPECTED DURING STAGE III.AS ENERGY DEMAND AND PROJECT ENERGY PRODUCTION INCREASES TEMPERATURES WILL PROGRESS FROM THOSE SHDWN FOI ·EARLY STAGE III DEMANDS TO THOSE SHOWN FOR LATE STAGE III DEMAND LEGEND C D E G R E E S MA Y ,JUN ,JUL AUG SEP OCT NOV DEC ,JAN FEB MAR APR MAY ,JUN ,JUL AUG SEP 1981 1982 FIGURE E.2.4.269 .- ALASKA POWER AUTHOflITY SUSIlHA ,t'YtJO()(l:lCfnlC F"R(}XCf SIMULATED8USITNA RIVER TEMPERATURES RIVER MILE 100 STAGE III ~.:!"-"="I----,-1-- --SIMUlA TED NATURAL TEMPERATURES -----SIMULATED TEMPERATURESE-VI FLOW REQUIREMENTS PROPOSED PROJECT ---SIMULATED TEMPERATURES E-I FLOW REQUIREMENTS (FOR COMPARISON) AlASKA POWER AUTHOfllTY , SlI91~flTOflO£l£CfRJC PRO..ECI SIMULATEd BUSITNA RIVER TEMPERATURES RIVER MILE 1110 LATE STAGE III ........~I ---..---1-I'- lEGEND />lOTES: 1 CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT. 1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MULTI-LEVEL INTAKE 3.STAGE 3 OF 3-ST AGE PROJECT 4.AVERAGE WEEKLY VALUES 5.DEVil CANYON ,DRAWDOWN OF 50 FEET-2 LEVELS OF SHUTTERS FIGURE E.2.4.270 '\j '/'\1\1,.I "' "'~l,~ 1~ i ".\~ ", ", \ \ \ I\. \.....J ~',.r....._"J'~V :"-' MAY JUNJUL AUG S~P :OCT NOV DEC J~N FEB MAR APR MAY .JUN JUL AUG SEP 1981 i i 1982 4 2 o 6 8 10 12 C D E G R E E S ~''---..J ~'.~'_----.J ~-----.J ----,---I NOTES: 1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT.1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MULTI-LEVEL INTAKE '3.STAGE 3 OF 3-SrAGE 4.AVERAGE WEEKLY VALUES 5.DEVIL CANYON DRA WDOWN OF 50 FEET -'2 LEVELS OF SHUTTERS LEGEND --SIMULATED NATURAL TEMPERATURES -----SIMULATED TEMPERATURES E-VI FLOW REQUIREMENTS PROPOSED PROJECT ---SIMULATED TEMPERATURES E-I FLOW REQUIREMENTS (FOR COMPARISON) ...."",1 ...~".....,...' ,I ' \ 'I ',""'\'I ','"''I ','"' "It\/ /1 · \J /j Ih~J ,\..'..\ 1\...~ "'~ "'\, \, \, \, \,\",} ,I ......""1\'I I "\~"\ \ ,..,f v ,-to.;;......,~..~,J,./,... " ",, I'I I I ,I I :"II}',I I,' I '",.I / /"*'1''1' ...I " ",1, C D E G R E E S MA Y JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1981 1982 FIGURE E.2.4.271 AlASKA POWER AUTHOR1TY SU$I1NA HYOf Heinl(:f'PO,J£ct SIMULATED SUSITNA RIVER TEMPERATURES RIVER NILE 130 LATE STAGE III ~.:-~,.-----,-I'- 12 Al.Alll<A POW€R Al1llIOfllTY SUSIlM HTOflO(\ECffWC mo.Ecr 1SIIolULATI!D SUSITNA RIVER TEIIPERATURI!S RIVI!R IIILI!100 LATE STAGE III ~I- ---1-1 - 5.TEMPERATUFlcS SIMULATED BY SNTEMP FOR PERIOD NOVEMBER-MARCH SHOULD BE USED WITH C,AUT'ON AS AN ICE COVER MAY eXIST ON RIVER AND SNTEMP DOES NOT SIMULATE TEMPERATURES UNDER AN ICE COVER (SEE RIVER ICE SIMULATIONS) 4.AVERAGE WEEKLY VALUES 6.DEVIL CANYON DRAWDOWN OF 50 FEET-2 LEVELS OF SHUTTERS LEGEND --SIMULA TED NATURAL TEMPERATURES -------SIMULATED TEMPERATURES E-VI FLOW REQUIREMENTS PROPOSED PROJECT ---SIMULATED TEMPERATURES E-I FLOW REQUIREMENTS (FOR COMPARISON) NOTES: 1.CLIMATOLOGICAL AND HYDROLOGICAL DATA PERIOD MAY 1981-SEPT• 1982 2.INFLOW TEMPERATURE MATCHING POLICY FOR MULTI-LEVEL INTAKE 3.STAGE 3 OF 3 STAGE PROJECT FIGURE E.2.4.272 •,,' I I, I I I..', •I• 1982 • ""1\:,Iii' ..l'"{\V,~,'V "..,'I, I '\I AI•,7 'I ~" 19811 1----1 MA Y JUN ,JUL AUG SE~OCT NOV DEC JJ\N FEB MAR APR MAY JUN JUL AUG SEP i 4 o 2 6 8 10 C D E G R E E S ___'-.'---...J .----...l-.....---J '-----'.~'__~'\------,~--J -----....1 "---,"--- NOTES 2.SIMULATIONS WERE MADE WITH 1,SIMULATIONS WERE MADE FOR lATE STAGE III ENERGY DEMANDS AND IllUSTRATE TEMPERATURE DIFFERENCES FOR WET I DRY AND AVERAGE CONDITIONS DOWNSTREAM OF TALKEETNA .. -'v', \. ._~\",:.\ ~'\'''.',.~CASE C FLOW REQUIREMENTS \,,'~BEFORE APPLICANT DEVELOPED \'\CASE E-VI.THIS DOES NOT \\AFFECT VALIDITY·OF COMPARISON. \-,'\\~, \\\ \'\1982 AVERAGE FLOW 1981 HIGH FLOW 1974 lOW FLOW. 1971 AVERAGE FLOW ./\/\ i /'-'/,,;_.. ,III j// / /j / / :/..WEATHER CONDITIONS: // /:-,,- IfMAY I JUNE I JULY \AUG I SEPT I OCT 1--, 0-r---'rt I I I I I I I I I I I I I I I I I I I I I I I 30 35 40 45 ·50 1 5 WA TER WEEK SUSITNA RIVER TEMPERATURE AT RIVER MILE 130 WATANA AND DEVIL CANYON OPERATING FIGURE E.2.4.273 i,1, 11 10 12 2.SIMULATIONS WERE MADE WITH CASE C FLOW REQUIREMENTS BEFORE APPLICANT DEVELOPED" .~ CASEE-VI.THIS DOES NOT AFFECT VALIDITY OF COMPARISON NOTES 1.SIMULATIONS WERE MADE FOR LATE STAGE III ENERGY DEMANDS AND ILLUSTRATE 'TEMPERATURE DIFFERENCES FOR WET.DRY AND AVERAGE CONDITIONS DOWNSTREAM OF TALKEETNA \~~.\ \/~\.\.,/\ WEATHER C!O~DITIONS: I !I i I ----.~,.:1982 AVERAGE ~LOW ------;!1981 HIGH FLOWI .I----i-11974 LOW'FLOW -..-_.,-I 1971 AVERAGE FLOW ./"...'........" /. .-!J/1 / /. / 4 ~ 7 8 2 9 ::E e(wa: l- f/) wa:::;)'6 l- e(a:w Q.5::Ew I- -~ 1 40 j 45 WATER WEEK 35 0 i 'I I I I I I h I j I i I I i I I I I 1 'I i I I i I I I I I I I I I I 30 50 1 5 SUSITNA RIVER TEMPERATURE AT RIVER MILE 84 WATANA AND DEVIL CANYON OPERATING :'----'.-~-__'--~-~-~-,--~----~---~-~-...J.._-..~.-'______-,i --, FIGURET2.4.274 150-r--------------------------------.., 140 Zo ~_130 U W o::::! -l~ !-0:120 Zw0>0:- u..~110 wu 100 ---ICE FRONT ---aGc ISOTHERM .~,.:-~~.-•.--....\\'''-JV(~EARLY STAGE III '--';'""..",," I..'7\'"''I J /,"I f-",I ..,~..~•••••~"~1·".(:"~:'6'"•••:••\.P#•••...-\,," I a..~,:·. \~", I JI ....¥"'~~,'.•••~LATE STAGE III':...+.~~...., I •'.•~'..'...--......" I.II •.,''-.:\-u ••i:" 90 -+-----.......-----.,..------r-------,------r------; NOV DEC JAN FEB MAR APR 140130 3/ 120 RIVER MILE 110 REFERENCE LINE:,..-- I 3000 cfs OPEN WATER SURFACE PROFILE- I I "LATE STA 31 III./EARL Y pTA ~E III j A J "...."II!""--r-~~ ~·-1-·-·-'",","""".;t""'S.....I,V \.--.--,~II l/~'..I ,;'_M... " .........,,-"'----..-I'~.~....-,~(.f-<~_..~..I-l ".....,"',l"'" I I I 100 w 14 <.9 12«!-en 100:w_8>!--wO:w 6~!:!::. ::::>41-1 ~ l I x 2« ~0 0 140130120 RIVER MILE 110 i'..I'\. --"""\./\ I ......"'--....._, ~--_..-....1\...---_._.--I--"~...'.... I I I NOTES: 1.STAGE.III SIMULATION BASED ON CASE E-VI FLOWS,LATE STAGE III ENERGY DEMAND, INFLOW MATCHING TEMPERATURE POLICY 2.NATURAL CONDITIONS NOT SIMULATED UPSTREAM OF RM 140. 3.3000 cfs REPRESENTS TYPICAL WINTER FLOW UNDER NATURAL CONDITIONS UP LEGEND: ---NATURAL CONDITIONS ___a LATE STAGE III OPERATING II NATURAL SLOUGH BERM ELEVATION (See Table E.2.4.23) _••-EARLY STAGE III OPERATING I FIGURE E.2.4.275 SIMULATED RIVER ICE CONDITIONS STAGE III vs.NATURAL 1981-82 WEATHER CONDITIONS CASE E-VI FLOWS 150....,..-------------------------------..., 140- .. APR 140 I 140 --..---. ._..--_.. MAR ._.--- I 130 130 2/ '- FEB LEGEND: ---'CASEE-1FLOWS ,------CASE E-Vl FLOWS •NATURAL'BERM OVERTOPPING ELEVATION (See Table E.2.4.24) I: I) '( .J I. J I 1 :: I I] SIMULATED RIVER ICE CONDITIONS· 1981_82WSE~AT~EE~1CONDITIONS Ii CASE E-1 vs.CASEE...VI . JAN 120 RIVER MILE 120 RIVER MILE DEC 110 REFERENCE LINE· NOV 100 .--3000cfs OPEN WAfER SURFACE PROFILE- 4 2 0 8 .1,-.1 6 ".•"-.,"-1 /~1/4 ........_.~~;.""-II ~, ""I , 2 n ~._.-.._-~.---...I •....--......I I 90_+-----..-------.-------...------.------.--------1- 1 1 100 w ~«!i; a:w_>I--wa:w 2!:::.::::> 2 X« 2 NOTES: 1.SIMULATIONS BASED ON LATE STAGE III ENERGY DEMAND,INFLOW MATCHING TEMPERATURE POLICY; 2.3000 cfs REPRESENTS TYPICAL WINTER FLOW UNDER NATURAL CONDITIONS AT FREEZE UP. FIGURE E.2.2.276 Zo ~_130 U W O::::! -'2 I-a:120 Zw 0>a:-u.~110 wu wS2 i=1O~-'-T-----------rT_r-n---.,._-_r-__r__,___,__,__r___r_,__.,._.,.__r-r_T,___n ~lli8:...+-+-------------------I-+-+--lH----1---+-:...+:...+-4-4-+--++--1--1--+--l-++---H I-!:::.0(f.)6-+--+------------1H--+---++---+---+--+--+--l--l--+--+-+-+-+--+---+-+l---HI-(f.) 2 w 4--......------.....::::>Z-_1_ 2::':::"-l~~~_._.-;-.-.. 100 110 i__ ~.1.£V[L I -. IIaH:~YE 'liPILillAV 300 I I I r I I I I I I I I I 300 ~~~~I I I I I I II I I I ~~ --p." /"I If\X r "'" ." =.,,7 /.R.r lIIi\]~-Ij\,t;,• ., 200~ ""D. ~ ISO 0 n ~ 100 • I ~50 ~r-- 0•..•,,,..n •.....,.I OCT '. ,., I I .J, , I I....I ', "I ',••.L-.A..,•r-t' ---I +---& ,"I \' 1..-! .I'.,-"I~ I , ,,.,...-Y L I ,I I ,I j I ,--, I .: ...--. • ~ ..AH I FEB ~ DECNOV p GOi I jSszt=''l I-=~T/I ifi3~l"::'"ii~.--..,.......,..,r ,I I, I ,I ~ Q.•I I II I.ft 4ft ..~,ooi I I I I I I:•..~ ""'"17 ~____ ~l501=_i ~FT---~r :......~ U.I I •I I I ~I, r 1 I I I I I I iJ,!o i ~" 1981 1982 LEC£ND.FLASKA POWER AUTHCflITY NOTES. PREDlCTED DUTFUJJ SLGP .6ED.CONCENTRATION I MG/L1lNFLOWSUSP.SED.CONCENTRATION AT WATANA (MGILI (0-3 ONLY) 1.SUSPENDED SEDIMENT INFLOWVALOES REPRI;SE~T THE 0-3 M RANGE AND ARE 15%OF THE TOTAL SUSPENDED SEDIMENT INFLOW. 6l.Iilf~FRO.£CT I lJtftCiIt l1IJlO. STAGE IU-OEVICCAIIJVc:rfi OUTFLOW SUSPENDED SOLIDS (0-10 MICRONS) AVERAGE YEAR .mZA-EElASCO JlINT IlENTlRE I:Mlt.....1u.I'~:U.I"oUl -,Cl-CIlQ..Oli FIGURE E.2.4.277 I ! ~,J 'IJ:I ,.~ *-~I I I i I L£V£L I -IE'~E-I I noz \) 1-1110' ~'\--.- •3: ,50 I;) V".r- 2IiD ==1 l \.. I I it I .200~ : : I =l :u . I m I •ISO gJ ..u.. 'to,'I ,tv f '. \' ~ TIT ., I n'I ~ ~ I I,......, or I I , T .........., I ~R -==="__L.~-___L ,-1-......'1 APR i I HAY ...:..;...::.. I I ! i !1 !I I tEf1: ! I 1 I; 4-i!i,, ==1 i I r I -I !jj r +I--+-I, I NOV I'DEC -- ...JdZEOr.~--- ---I ._- 200 U ~-Z CJ 1---U 0150 1--W (J) n UJ ~IOO § 50 1S82-1983 LEC£NDI ALASKA POWER AUTHORITY HARZA-EBASCO JOINT VENTURE __SlIilrHll I'RO..£CT I ~tmn._ I ST AGE \II DEVIL CANYON OUTFLOW.SUSPENDED SOLIDS (0-10 MICRONS) AVERAGE YEAR PREDICTED OUTFLOW SUSP.SED.CONCENTRAHON I MG/LI INFLOW SUSP.SEo;.CONCENTRATlCJ-J AT WI;lTA-IA (MOIL I(~-i3 M ONLY)Ii·i NOTES I 1.SUSPENDED SEDIMtNT INFLOW VALUES REPRESENT THE 0-3 M I '.:I RANGE AND ARE 1696 :OF THE TOTAL SUSPENDED SEDIMENT INFLOW i 1---I tHlt"OEl_lu,.lMJla ~I 4l-QtQ-06 J FIGURE E.2.4.278 ------.J '-------'-------'--------''------' ~_.- ------ ,[vr.I •~'L[~[~:!IIZ~----'--LfvL,3----.--- LL VLl • e:x:t-£..IlLif------fPlLl.Hl\'I' 300 300 _. - .J..... Z'6O(')250 ~-.--,J_.... "'II ·,1-,,·,200~,200 '1------,••U 1----".~I ".•,"'D?,'·" -.-n I(), '.I ,,•ISO~f--,..'.I ''','.•, rJ \50 ,'.hi "....•---..•Ul 1---..•,,n •I ••~a.,I.S-10m Ul -or,I I 1 100 •lrl lOO ,r-:•I 1 \..,I .,--I I v ----...........•I , .......r.....('"/to,~1 .-LT ,~-......."-'\I O.3m \1.-'til,I"J 3- 60 "-\.,"soO'I r-•....... '\"-.r/---.,,~r-I,-.........../ ...........- 0 -------'..-..--.0. .foCV DEC .J'W FEB ':I AR APR IfAY ..JLtl ..u..tU)6EP OCT 1981 1982 LEGEND.ALASKA POWER AUTHORITY PREDICTED OUTFLOW SUSP.SED.CONCENTRATION IHG/LI 6UlHNIl I'AO.EtT I OYRDiIt IGlB..-------INFLO~SUSP.SED.CONCENTRATION CMG/Ll (0-3 M ONLY)"STAGE III WATANA OUTFLOW SUSPEND~D NOTES.SOLIDS (0-10 MICRONS) AVERAGE YEAR sse If\lFLO...J VQLLlES REPRESENT THE 0-3 MICRON RRNGE AND RRE:l-mZA-EBASCQ JJINT VENT~E t S:··.Dr TSS CHJf;IQI.tu.tt.at.li~oUI _,,q-OID-06 FIGURE E.2.4.279 ~-~. " ~~_[~~L.~i- I-L[VrL" 7 -I-L[Vl~11---ILEVEL4I ~_~~VE f---'f -~!,!..L.WAV ,;I I 3(X)!1 3IlOI---_._..-I-_.I I_.I I -l ,"-ZIiQC)ZSO I~I---I ,....I ,-I---,jf----, 1 -'.'"'If,I ••-._. I -.I'200~!. •?OO I -'.,.',(J f-._- ".,'",I •lJZ..,"•t')•u -----.I 1-£.'•,• ISO ~------.---h I I'll"I I •0150 I :,. II'•It.·Ul I , 1 .,,\••I nI,•~•--.n --- t , I'(jJ --,_.''3-'flt!•m·••100 •mlOO ,_.I ,• I !,".'•,h-I ~-r----.i !-~I •,,.,I......1-"-'I 'I'~I .~I ,'"-"-!'I "--I -O-3m '.."'-'of •-,IV Z, SO~50 \,!'-'".I .JI i I .....I"-,'111\,"..-I "-'-"/, I i ""-~./____~_l. -j'".,00'...........; NOV L m:C JAN I iFEB HRR APR-r "~V JUN ..AJ..~6EP OtT 1982 i I 1983 ::i LEC£ND.I I ALASKA POWER RUTHORITYI PREDl CTED OUTFLOO Sl5P .SEDl COIllCENT~RT[oN (HG/L1 MirNA nto..EtT I lJfll£'6It 11II8.._-..._--ilNFLOW SUSP.SED I.CCJ-JCENTRRTI(]\I (MGIlJ I STAGE III WATANAiIi I OUTFLOW SUSPENDEDIiiSOLIDS(0-10 MICRONS)NOTES I "AVERAGE YEAR.,I I:1.sse I NFLOW VALUES REPRESENT THE 0-3 1M I CRON Rf:t.JGE RND RRE KlRZR-EERSCO ..oINT VENT~E 15%OF TSS ! C~IC""".....IMI..1'.'--'«-Glo-<l6 ~I FIGURE E.2.4.280 '---'~ ~ --~'~''--------" i ----------' PHOTOGRAPHS !.! 0] J J 1 1 FRAZIL-~~ ICE PHOTO E.2.2.1 FRAZIL 'ICE UPSTREAM FROM WATANA NATURAL LODGEMENT POINT..............= PHOTO E.2.2.2 ICE COVER DOWNSTREAM FROM WATANA SHOWING. .; I l 1 J 1 J J -1 1 l .1 J J } .I J J J J u u PHOTO E.2.2.3 SLOUGH 9 APPROXIMATELY 3500 FEET UPSTREAM FROM SLOUGH MOUTH,DECEMBER 1982 PHOTOS E.2.2.5 E~2.2.6 E.2.2.7 E.2.2.8 PHOTO E.2.2.4 SLOUGH 8A FREEZE-UP,DECEMBER 1982 MOUTH SLOUGH8A PHOTO E.2.2.6 PHOTO E.2.2.5 SLOUGH 8A NEA:R LRX -29 LOOKING UPSTREAM PHOTO E.2.2.6 SLOUGH 8A J -J ] 1 1 } J ] J 1 J J .j _J J J J J l PHOTO E.2.2.7 SLOUGH 8A SHOWING FLOODING DURING FREEZE-UP \-I ,J 'l 1 I I] J ] J ,] :1 J ~ I :J ,] , J 1 J ;J