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Home My WebLink AboutAPA2854- ~~~~I .........:!t,/..../:::::/.:.)\..J\.~ 1TURBIDITY I ................. ALASKA DEPT.OF FISH &GAME JAN 20 1986 REGION II HABITAT DIVISION ALASKA DEPARTMENT OF FISH AND GAME SUSITNA HYDRO AQUATIC STUDIES REPORT SERIES - - ".... ..... "...., ~, ARLIS Alaska Resources Library &Information ServIces Anchorage,Alaska Document No.2854 Susitna File No.42.2.5 JK p..t~5 1 S § Ata2> Y\O \;>.<65'+ ALASKA DEPARTMENT OF FISH AND GAME SUSITNA HYDRO AQUATIC STUDIES ADDENDUM TO REPORT NO.3,CH.6 Salmon Passage Validation Studies (August -October 1984) Prepared for: ALASKA POWER AUTHORITY 334 W.FIFTH AVE. ANCHORAGE,ALASKA 99501 June 1985 ----.""'"""=---_,_I-"='l ......----- .-; - - - - -i ...... NOTICE ANY QUESTIONS OR COMMENTS CONCERNING THIS REPORT SHOULD BE DIRECTED TO THE ALASKA POWER AUTHORITY .SUSITNA PROJECT OFFICE ARLIS .Alaska Resources LIbrary &Information ServJCes Anchorage,Alaska PREFACE Thi s report is an addendum to one of a seri es of reports prepared for the Alaska Power Authori ty (APA)by the Alas ka Depa rtment of Fi sh and Game (ADF&G)to provide information to be used in evaluating the feasibility of the proposed Susitna Hydroelectric Project.The ADF&G Susitna Hydro Aquatic Studies program was initiated in November 1980. Reports prepared by the ADF&G prior to 1983 on this subject are available from the APA. Tbis addendum revises and suppl£ment po~rions of Chapter 6 of the 1984 ADF&G Su ~ydro Studies Report Number 3,An Evaluation of passare Conditions for Adult Salmon in Sloughs and Side Channels of the Midde Susitna River.This addendum provides the most current information on passage requirements for salmon based on the presently available information.The need for reevaluation of previously established local flows and mainstem discharges requi~ed for successful and unsuccessful sa 1man passage at selected slough and si de channels;tes in the mi ddl e reach of the Sus1tna River (RM 95 to 152)was necessitated based on an assessment of the results of the 1984 passage Validation Studies (PVS). In addition,a review of presently available passage related data indicated that collection of additional data,or further evaluations of existing data,were needed to more adequately assess salmon passage cond itions in the se hab ita ts •Resu 1 ts of the 1984 PVS,wh i ch were previously presented in a draft technical memorandum (ADF&G 1984),have been incorporate into this addendum along with all revised and updated data. - - ~, ADDENDUM TO ALASKA DEPARTMENT OF FISH AND GAME REPORT NO.3,CHAPTER 6: SALMON PASSAGE VALIDATION STUDIES AUGUST -OCTOBER,1984 By: Jeffery S.Blakely and Joseph S.Sautner Alaska Department of Fish and Game Susitna Hydro Aquatic Studies 620 East 10th Avenue Anchorage,Alaska 99501 and Larry A.Rundquist and N.Elizabeth Bradley Entrix,Inc. 4794 Business Park Boulevard Suite 6 Anchorage,Alaska 99503 1985 ABSTRACT An interim evaluation of the effects that mainstem discharge and local flow have on passage conditions for adult salmon at selected slough and side channel habitats of the middle reach of the Susitna River was previously presented in Sautner et al.(1984).Due to the limited data available for this interim evaluation,the Passage Validation Studies (PVS)were initiated during the 1984 open water field season to collect additional physical and biological data to reevaluate the passage criteria and the local flow and mainstem discharge values required for successful and unsuccessful salmon passage within these habitats.In addition,the methodologies used for the backwater and local flow analyses were revised to reflect the additional data which were i collected.Physical data collected included channel cross section and thalweg profiles t substrate assessments t and local flow measurements. Biological data consisted of salmon passage criteria based on visual observations of adult chum salmon movement in selected slough and side channel habitats. The salmon passage criteria previously presented in Sautner et ale (1984)were reevaluated and revised based on these data using a modified analytical approach.The revised analysis resulted in the development of a single set of salmon passage criteria thresholds for defining successful and unsuccessful passage conditions at study sites.A total of 85 passage reaches were identified at slough and side channel sites during the 1984 PVS compared to 74 passage reaches identified in Sautner et al.(1984).Using the revised criteria thresholds as guidelines t a reevaluation of the breaching t backwater t and local flow analyses for these passage reaches indicates that mainstem discharge and local flow requirements for successful and unsuccessful passage are similar to values previously established.The most significant differences occurred.in the backwater analysis for some sites t where required mainstem discharges decreased over I t OOO cfs.Water depth was determined to be the primary physical variable affecting passage conditions at passage reaches;passage conditions were not greatly affected by changes in passage reach length.Variations in channel configuration and substrate size were assumed to have a negligible influence on the salmon passage criteria.The revised passage criteria thresholds are based on an upper thalweg depth of 0.5 feet thereby voiding all previous analyses that utilized 0.67 feet as the upper limit of thalweg depth. ii - ~, - ..... - TABLE OF CONTENTS ABSTRACT •••••••.• """ ..................................................; LIST OF FIGURES •••v LIST OF TABLES •••••••••••••••••vi LIST OF APPENDIX FIGURES •••e·••.••••••••••-••••.•••••••••••••••••••••••viii LIST OF APPENDIX TABLES............................................xv 1.0 INTRODUCTION ••••••••••0 •••81111 •••••••••••101.0 ••8 ••-$•••••••••••••1 1.1 1.2 Background •••••••••••••••••••••••••~ Objectives ..•.••.•••.•••..•.••.•...........................1 3 2.0 METHODS ••••••••••••••••••••••••••••••••••••••eo.G •••••••••••••4 Site Selection •••• Field Methods •••••- 2.1 2.2 2.2.1 2.2.2 2.2.3 .............................................................. Determination of Salmon Passage Criteria ••••••••••• Identification of Passage Reaches •••••••••••••••••• Physical Habitat Variables Used to Evaluate Passage Reach Conditions •••••••••••••••••••••••••••••••• 4 4 4 6 7 2.3 Analytical Methods •••.•.•-.••••••••e ••••••••••••••••••••••••••10 ..................10 11 12 12 13 13 ..... Evaluations ••••••••••••••••• Verification of Passage Reaches ••••••••• Breaching Analysis •••••••••••••••••••••• Backwater Analysis •••••••••••••••••••••• Local Flow Analysis ••••••••••••••••••••• Salmon Passage Criteria ••••••••••••••• Passage Reach 2.3.2.1 2.3.2.2 2.3.2.3 2.3.2.4 2.3.1 2.3.2 3.0 RESULTS ••••••••••••-•••••'••••••••••••••••••••••••••••••••••••••17 17 25••Ii •••••••••••••••Evaluations •••••••••••••• Salmon Passage Criteria •••••••••••••••••••••••••••••••••• Passage Reach 3.1 3.2 3.2.1 3.2.2 Breaching and Backwater Analyses ••• Local Flow Analysis •••••••••••••••• 25 25 - iii TABLE OF CONTENTS (Continued) 4.0 DISCUSSION ••••.•••••••••••e •••••••••••••••••••~.......••••••••39 4.1 Salmon-Passage Criteria.............•.••.••••••••••••••••••••39 4.2 Passage Reach Evaluations...................................41 4.2el Mainstem Breaching......................................41 4.2.2 Mainstem Backwater......................................42 4.2.3 Local Flow .••..••••..e ••••••••••••••5...................44 4.3 Influence of Mainstem Discharge on Local Flows..............47 4.4 Conclusions/Recommendations.................................48 5.0 CONTRIBUTORS..................................................53 6.0 ACKNOWLEDGEMENTS •..........................c e....54 7.0 LITERA Tl~RE CITED...............................................55 8.0 APPENDICES....................................................57 - Appendix A.Supplement to Local Flow Methods •••••••••••••••••A-I Appendix B.Passage Reach Distribution Maps..................B-1 Appendix C.Thalweg Profiles of Passage Study Sites ••••••••••C-1 ~ Appendix D.Cross Sectional Data •••••••••••••••••••••••••••••D-1 Appendix E.Stage and Discharge Data •••••••••••••••••••••••••E-1 iv - LIST OF FIGURES Figure 1 Geographic location of passage study sites in slough and side channel habitats of the middle Susitna River,Alaska,1984.....................2 2 Schematic diagram of steps followed in the local flow analysis at a passage reach.................14 3 Chum salmon passage criteria collected at unifonn passage reaches at se1 ected slough and side channel sites plotted with Criteria Cu rye I l!l •••Q •l!l e e _••G ••e e _...0 0"e _••••e _0 e 0-0 0 e e _ •0 CI •CI •e e •G 19 4 Chum salmon passage criteria collected at non-unifonn passage reaches at se1 ected slough and side channels i tes plotted wi th Cri teri a Curve II 0&• • • • • • • • • • • • • •20 5 Chum salmon passage criteria collected at all passage reaches wi thin sel ected slough and side channel sites plotted with Criteria Curve·I..-.'................•'.•............••_.;..ill 0&••"•••e 21 7 Compa ri son of revi sed passage cri teri a thresholds for successful and unsuccessful passage of chum salmon with Criteria Curve I. (*Line A and Line B coordinates represent passage depth values;the thalweg depth scale is presented for compa~i son purposes only.)............23 8 Percent distribution of chum salmon passage data for each category of passage in relation to the revised passage criteria thresholds.............24- 6 9 Revi sed passage cri teri a thresholds for successful and unsuccessful passage condi- tions of chum salmon within sloughs and side channels in the middle Susitna River...................22 Daily mainstem discharge exceedence curves for the August 20 to September 20 salmon spawning period in the middle Susitna River under natural flow conditions.Exceedence curves were developed from 35 years of USGS discharge data at Gold Creek (Station No. 15292000)using methods described in Chapman (1982 )0&• • • • • • • • • • • • • • • • • • • • • • • • • •33 v LIST OF TABLES Table 1 Summary of passage study sites and corresponding river miles in the middle Susitna River •.•..-•.........•.•...•..•••...............5 2 Substrate size classification system used for the 1984 Passage Validation Studies ••.•••••.•••.••.••.• 3 A summa·ry of chum salmon passage data collected at passage reaches within slough and side channel study sites in the middle Susitna River during the 1984 open water 9 season iii ••••••00-e III II II (I ••••Cl e III 'lil 0 II 18 4 A summary of middle Susitna River passage reaches with selected physical character- istics which were identified during the 1984 open water season.A cross reference list to passage reaches defi ned in Sautner et a 1. (1984)is included •.....••.•.e.e •••••.•••••••••5 •••••••e 26 5 A summary of initial breaching and can- trall ing mainstem discharges affecting passage reaches within selected study sites in the middle Susitna River............................29 - 6 Summary of mainstem discharges required to provide successful and unsuccessful salmon passage conditions from backwater effects at selected study sites in the middle Susitna River •..••...•..••.••••.•..•..•.••••••ee................30 7 Summary of local flows required for success- ful and unsuccessful passage conditions and the freqIJenci es of occurrence based on precipitation and groundwater contributions at median Susitna River discharge of 15,000 cfs during the August 20 to September 20 per,iod o........35 - 8 9 Frequencies of occurrence of local flows evaluated through the use of mainstem versus local flow relationships in Sloughs 8A,9 and 11·excluding the effects of backwater and breach;ng.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 Compari son of the resul ts of the backwater analysis presented in this addendum to the results previously reported in Sautner et al. (1984)for sloughs and side channels in the middle Susitna River...................................43 vi LIST OF TABLES (Continued) 10 11 Compari son of the resul ts of the 1oca 1 flow ana 1ys is presented in th is addendum to the results previously reported in Sautner et al. (1984)for sloughs and side channels in the middle Susitna River •..••.••.••••..•&•••••••s •••••••••a 46 A summary of mainstem discharges initially providing successful passage conditions through either backwater,breaching or local effects at selected study sites in the middle Susitna River ....•......•..•.•e........................49 vii -. - ~, -LIST OF APPENDIX FIGURES Figure APPENDIX A A-I Illustration of the general procedure used in the local flow distribution analysis •••••••••••••••••••A-3 A-2 August Precipitation Duration Curve for the period 1972-1981 at the Talkeetna Weather Station (Adapted from H-E 1984)•••••••••••••.•••••••.••A-16 APPENDIX B B-1 Locations of passage reaches at Whiskers Creek Slough during the 1984 open·water season....•••••••••••••••••••••••••••••••••••••••••• •••B-3 B-2 Locations of passage reaches at Mainstem 2 Side Channel during the 1984 open water season •••••••••••••••••••••••••••••••••••••••••••••••••B-4 B-3 Locations of passage reaches at Slough 8A (lower)during the 1984 open water season •••.••••••••••8-5 -8-4 B-5 Locations of passage reaches at Slough 8A (upper)during the 1984 open water season ••••••••••••••B-6 Locations of passage reaches at Slough 9 during the 1984 open water season ••••••••••••••••••••••B-7 B-6 Locati ons of passage reaches at Slough 9A during the 1984 open water season ••••••••••••••••••••••B-8 - B-7 B-8 Locations of passage reaches at Side Channel 10 as identified by the thalweg profile ••••••••••••••••8-9 Locations of passage reaches at Slough 11 and Upper Side Channel 11 during the 1984 open water season...........................................8-10 B-11 8-9 Locations of passage reaches at Slough 19 during the 1984 open water season ••••••••••••••••••••••8-11 8-10 Locati ons of passage reaches at Slough 20 during the 1984 open water season ••••.••.••••••••••••••8-12 Locations of passage reaches at Side Channel 21 during the 1984 open water season •••••.•••••••••••••B-13 8-12 Locati ons of passage reaches at Slough 21 during the 1984 open water season •....•••••••.••••••••.8-14 8-13 Locations of passage reaches at Slough 22 during the 1984 open water season •••••••.•••••••.••••••8-15 viii LIST OF APPENDIX FIGURES (Continued) Figure APPENDIX C C-1 Thalweg profile of Whiskers Creek Slough showing approximate locations of passage reaches Cl ••C-3 C-2 Thalweg profile of Mainstem 2 Side Channel showing approximate locations of passage reaches.................................................C-4 C-3 Thalweg profile of Slough 8A showing approximate locations of passage reaches .••.••.•...•..•C-5 C-4 Thalweg profile of Slough 9 showing approximate locations of passage reaches .•.••.....••.•.C-6 C-5 Thalweg profile of Slough 9A showing approximate locations of passage reaches .•.............C-7 C-6 Thalweg profile of Side Channel 10 showing approximate locations of passage reaches ..•.•••••••••••C-8 C-7 Thalweg profile of Slough 11 showing approximate locations of passage reaches •...•.•..••.•..C-9 C-8 Thalweg profile of Upper Side Channel 11 showing approximate locations of passage reaches .....•..•............e-.• • • • • • • • • • • • • • • • • • • • • • •••C-IO C-9 C-ll C-I0 C-12 ~, Thalweg profile of Slough 19 showing approximate locations of passage reaches •••..•.••••••.•C-11 Thalweg profile of Slough 20 showing approximate locations of passage reaches .••..••••••••.•C-12 Thalweg profile of Side Channel 21 showing approximate locations of passage reaches •••.•••••..••.•C-13 Thalweg profile of Slough 21 showing approximate locations of passage reaches .•••••.....•..•C-14 C-13 Thalweg profile of Slough 22 showing approximate locations of passage reaches ••••••.•.••..••C-15 - ix -LIST OF APPENDIX FIGURES (Continued) Figure APPENDIX 0 0-1 Cross sectional profile of Passage Reach I in Whiskers Creek Slough,October 4,1984 ••..••..•...•..•.0-74 0-2 Cross sectional profile of Passage Reach II in Whiskers Creek Slough,October 4,1984 .••.••..••.••.0-75 0-3 Cross sectional profile of Passage Reach I in Mainstem 2 Side Channel,October 5,1984 ••••.•••••••••.0-76 0-4 Cross sectional profile of Passage Reach II in Mainstem 2 Side Channel,October 5,1984 ••••.••••••.0-77 0-5 Cross sectional profile of Passage Reach III in Mainstem 2 Side Channel,October 5,1984 •••.••..•..•0-78 0-6 Cross sectional profile of Passage Reach IVL in Mainstem 2 Side Channel,October 5,1984 •.••••..••..0-79 0-7 Cross sectional profile of Passage Reach IVR in Mainstem 2 Side Channel,October 5,1984 ••••.•.••..•0-80 0-8 Cross secti ona 1 profi leaf Passage Reach VR in Mainstem 2 Side Channel,October 5,1984 ••.•.•••••••0-81 0-9 Cross sectional profile of Passage Reach VIR in Mainstem 2 Side Channel,October 5,1984 ..••••.•••••0-82 0-10 Cross sectional profile of Passage Reach VIIR in Mainstem 2 Side Channel,October 4, 1984.•. •••••.•••••••••••••.•••••. .••.••.•••.••.•••.••..0-83 0-11 Cross sectional profile of Passage Reach VIIIR in Mainstem 2 Side Channel,October 4, 1984.•••..••••.••••••••.. •. ••.••.••. ....•. ••. •.••.. •...0-84 0-12 Cross sectional profile of Passage Reach II in Slough 8A,October 6,1984 ••.....•.••.•.....•..••...0-85 0-13 Cross secti ona 1 profil e of Passage Reach IV in Slough 8A,October 6,1984 ••...••.•••.••.•.••.••..•.0-86 0-14 0-15 Cross sectional profile of Passage Reach VIL in Slough 8A,October 6,1984 .•.••.•..•.••...•.........0-87 Cross sectional profile of Passage Reach VIR in Slough 8A,October 6,1984 .......•........••........0-88 x APPENDIX D (Continued) LIST OF APPENDIX FIGURES (Continued) Figure - D-16 Cross sectional profile of Passage Reach VIIR in Slough 8A,October 6,1984 •••••••••••••.••••••••.•••D-89 0-17 Cross sectional profile of Passage Reach VIIIR in Slough 8A,October 7,1984 ••..•••••••••••••.••D-90 D-18 Cross sectional profile of Passage Reach IXR in Slough 8A,October 7,1984 ••••••••••••••••••••••••.•0-91 0-19 Cross sectional profile of Passage Reach XR in Slough 8A,October 7,1984 ••••••••••••••••••••••••••D-92 0-20 Cross sectional profile of Passage Reach IV in Slough 9,September 22,1984 •••••••••••.••••••••••••D-93 0-21 Cross sectional profile of Passage Reach V in Slough 9,September 22,1984 •••••••••••••••••••••••••••D-94 D-22 Cross sectional profile of Passage Reach I in Slough 9A,October 8,1984 •••••••••••••••••••••••••••••0-95 D-23 Cross secti ana 1 profi 1e of Passage Reach II in Slough 9A,September 23,1984 •••••••••••••••••••••••D-96 ","", ~, -Cross secti ana 1 profi 1e of Passage Reach IX in Slough 9A,September 23,1984 ••.•.••••••.••.••.•••••D-103 Cross sectional profile of Passage Reach X in Slough 9A,October 8,1984 •••••••.•.•.•.••••...•••..••~D-104 D-31 D-28 Cross sectional profile of Passage Reach III in Slough 9A,September 23,1984 •••••••••••~•••••••••••D-97 Cross sectional profile of Passage Reach IV in Slough 9A,September 23,1984 •••••••••.•••••••••••••D-98 Cross sectional profile of Passage Reach V in Slough 9A,September 23,1984 ••••••••••••••••••••••••••D-99 Cross sectional profile of Passage Reach VI in Slough 9A,October 8,1984 ••••••••••.•••.•••••••••••0-100 Cross sectional profile of Passage Reach VII in Slough 9A,September 23,1984 ••••.••••••••••••.•••••0-101 D-29 Cross sectional profile of Passage Reach VIII in Slough 9A,September 23,1984 .••••••••••••••••••••••0-102 D-26 D-25 0-30 0-27 0-24 xi -- LIST OF APPENOIX FIGURES (Continued) - Figure 0-32 APPENOIX 0 (Continued) Cross sectional profile of Passage Reach XI in Slough 9A,October 8,1984 ••••••••••••••••••••••••••0-105 0-33 Cross sectional profile of Passage Reach I in Slough 11,October 18,1984 ••••••••••••••••••••••••••••0-106 0-34 Cross sectional profile of Passage Reach III in Slough 11,September 21,1984 •••••••••••••••••••••••0-107 0-35 Cross sectional profile of Passage Reach·IV in Slough 11,September 21,1984 •••••••••••••••••••••••0-108 0-36 Cross sectional profile of Passage Reach V in Slough 11,September 21,1984 ••••••••••••••••••••••••••0-109 0-37 Cross secti ona 1 profi 1e of Passage Reach VI in Slough 11,September 21,1984 •••••••••••••••••••••••0-110 0-38 Cross sectional profile of Passage Reach VII in Slough 11,September 21,1984 •••••••••••••••••••••••0-111 0-39 Cross sectional profile of Passage Reach I in upper Si de Channel 11,September 21,1984 ••••••••••••••0-112 0-40 Cross secti ana 1 profi 1e of Passage Reach VI in Slough 19,October 17,1984 •••••••••••••••••••••••••0-113 -0-41 0-42 Cross sectional profile of Passage Reach VII in Slough 19,October 17,1984 •••••••••••••••••••••••••0-114 Cross sectional profile of Passage Reach VIII in Slough 19,October 17,1984 •••.•••••••••••••••••••••0-115 Cross sectional profile of Passage Reach IX in Slough 19,October 17,1984 ••••••••••••••••.••••••••0-116 0-44 Cross sectional profile of Passage Reach I in Slough 20,October 17,1984 ••••••••••••••••••••••••••••0-117 0-45 Cross sectional profile of Passage Reach VI in Slough 20,October 17,1984 •••••••.•••••••••••••••••0-118 0-46 Cross sectional profile of Passage Reach I in Side Channel 21,October 16,1984 •••••••••••••••••.•..•0-119 0-47 Cross secti ona 1 profi 1e of Passage Reach I I in Side Channel 21,October 16,1984 .•••.••••..•..•••••0-120 xii LIST OF APPENDIX FIGURES (Continued) Fi gure APPENDIX 0 (Continued) 0-48 0-51 0-50 Cross sectional profile of Passage Reach III in Side Channel 21,October 16,1984 ••••••••••••••••.••0-121 0-49 Cross sectional profile of Passage Reach IV in Side Channel 21,October 16,1984 •••••••••••••••••••0-122 Cross sectional profile of Passage Reach VII in Side Channel 21,October 15,1984 •••••••••••••••••••0-123 Cross sectional profile of Passage Reach VIII in Side Channel 21,October 15,1984 •••••••••••••••••••0-124 0-52 Cross sectional profile of Passage Reach IX in Side Channel 21,October 15,1984 •••••••••••••••••••0-125 0-53 Cross sectional profile of Passage Reach I in Slough 21,October 15,1984 ••••••••••••.••••••••••••••••0-126 0-54 Cross sectional profile of Passage Reach II in Slough 21,October 15,1984 ••••••••••••••••••••••••.0-127 0-55 Cross sectional profile of Passage Reach IIIR 1n Slough 21,October 15,1984 •••••••••••••••••••••••••0-128 0-56 Cross sectional profile of Passage Reach I in Slough 22,October 14,1984 ••••••••••••••••.•••••••••••0-129 .-. 0-57 0-58 Cross sectional profile of Passage Reach II in Slough 22,October 14,1984 •••••••••••••••••••••••••0-130 Cross sectional profile of Passage Reach III in Slough 22,October 14,1984 •••••••••••••••••••••••••0-131 xiii ~, _. '"'" LIST OF APPENDIX FIGURES (Continued) Figure APPENDIX E - E-1 Mainstem discharge (Provisional USGS 1984) versus the water surface elevation at Mainstem 2 Side Channel ......................•...•.•••.E-4 E-2 Mainstem discharge (Provisional USGS 1984) versus the water surface elevation at Slough SA mouth...............................................E-5 E-3 Mainstem discharge (Provisional USGS 1984) versus the water surface elevation at Slough 9 mouth ••••••••.••••••••••••••••••••.•••••••••••0 ••0 • • •E-6 E~4 Mainstem discharge (Provisional USGS 1984) versus the water surface elevation at Slough 9A mouth...............................................E-7 E-5 Mainstem discharge (Provisional USGS 1984) versus the water surface elevation at Side Channel 21 mouth.......................................E-8 E-6 Mainstem discharge (Provisional USGS 1984) versus the water surface elevation at Slough 22 mouth...............................................E-9 xiv LIST OF APPENDIX TABLES Table APPENDIX A A-1 Percent groundwater flow values for sloughs .and side channels ..•..••.•..•..••...•.••.••..•..•...•..A-4 A-2 Ranges of Manning's roughness coefficients as a function of substrate size and channel uniformity •..•••••••.•••••·G ••G..•••••••••••••••••••••••••A-8 ..- A-3 Values of Manning's roughness coefficient, energy gradi ent,and exc 1uded flow fo r calibration of Manning's equation .••••••.••••••.•••.•..A-10 A-4 Frequency of occurrence of 1oca 1 flows for successful and unsuccessful passage for a baseflow corresponding to 15,000 cfs 5usitna River discharge at Gold Creek and including precipitation from August 20 to September 20 •••.••.••..A-13 A-5 Precipitation coefficients for determining precipitation values at selected sloughs using precipitation values recorded at the Tal keetna weather station (derived from R&M 1984)A-I? A-6 Base flows for a mainstem discharge at Gold Creek of 15,000 cfs •••••••.••••••••••••••••.••.••••••.•A-18 APPENDIX C ,.... C-1 Summary of survey data collected for the thalweg profile of Slough 19 during the 1984 open water field season •••.••••••••••••.••••••.•..••e ••C-16 APPENDIX 0 - 0-1 Cross section proftle of Passage Reach I in Whiskers Creek Slough,October 4,1984 ..••••...••••....0-3 0-2 Cross section profile of Passage Reach II in Whi skers Creek 51 ough,October 4,1984.................0-5 0-3 Cross secti on profi 1e of Passage Reach lin Mainstem 2 Side Channel, October 5,1984 •.••..••....•..0-6 0-4 Cross section profile of Passage Reach II in Mainstem 2 Side Channel,October 5,1984 ....•.••....••.0-7 .... .... 0-5 Cross section profile of Passage Reach III in Mainstem 2 Side Channel,October 5,1984 •.•...•..•.....D-9 xv LIST OF APPENOIX TABLES (Continued) Table APPENOIX 0 0-6 Cross section profile of Passage Reach IVL in Mainstem 2 Side Channel,October 5,1984 •..•..•..•..•..0-11 0-7 Cross section profile of Passage Reach IVR in Mainstem 2 Side Channel,October 5,1984 ..•••••.••.••.•0-12 0-15 0-8 Cross section profile of Passage Reach VR in Mainstem 2 Side Channel,October 5,1984 .••.••••.••..•.0-13 0-9 Cross section profile of Passage Reach VIR in Mainstem 2 Side Channel,October 5,1984 •.••••••••..••.0-14 0-10 Cross section profile of Passage Reach VIIR in Mainstem 2 Side Channel,October 4,1984 •.•.•••.•..••..0-15 0-11 Cross section profile of Passage Reach VIIIR in Mainstem 2 Side Channel,October 4,1984 ••••••.••.••.••0-17 0-12 Cross section profile of Passage Reach II in Slough 8A,October 6,1984 •••••••••••••.••••••••••••••.0-18 0-13 Cross section profile of Passage Reach IV in Slough 8A,October 6,1984 •••.•••••••••••••••••.•••....0-19 0-14 Cross section profile of Passage Reach VIL in Slough 8A,October 6,1984 .•••.••••...•••••.•..•••••...0-20 Cross section profile of Passage Reach VIR in Slough 8A,October 6,1984 ••.••••••••.••.•..•.•••.•..••D-2l 0-16 Cross section profile of Passage Reach VIIR in Slough 8A,October 6,1984.............................D-22 0-17 Cross section profile of Passage Reach VIIIR in Slough 8A,October 7,1984 ..•.••....••....••.••.•..••.•0-23 0-18 Cross section profile of Passage Reach IXR in Slough 8A,October 7,1984 ..•.•..••.•..•.•..••.......••0-24 0-19 Cross section profile of Passage Reach XR in Slough 8A,October 7,1984 ••....•.••••••.•.••.••.••.•..0-26 D-20 Cross section profile of Passage Reach IV in Slough 9,September 22,1984 ••...•...•.......•......•..0-27 0-21 Cross section profi 1e of Passage Reach V in Slough 9,September 22,1984 ..•..•..•..•....•.....•..•.D-28 0-22 Cross section profile of Passage Reach I in Slough 9A,October 8,1984.............................D-29 xvi LIST OF APPENDIX TABLES (Continued) Table APPENDIX 0 0-23 Cross section profil e of Passage Reach II in Slough 9A,September 23,1984 ..........................0-31 0-24 Cross section profile of Passage Reach III in Slough 9A,September 23,1984 ..........................0-32 0-25 Cross section profil e of Passage Reach IV in Slough 9A,September 23,1984 ........Ct .'•••e _•••••0 •-0 • • •0-33- 0-26 Cross section profile of Passage Reach V in Slough 9A,September 23,1984 ..'.....e •••II ....0 ••"e III $0 •••0 •0-34 0-27 Cross section profile of Passage Reach VI in Slough 9A,October 8,1984 .......-...............o.o ••••G 0-36 0-28 Cross section profile of Passage Reach VII in Slough 9A,September 23,1984 ..................~.......0-37 0-29 Cross section profile of Passage Reach VIII in Slough 9A,September 23,1984 ......e _••••••••••••D ••••••0-38 ~0-30 Cross section profile of Passage Reach IX in Slough 9A,September 23,1984 ........,g •••••••••a _••••••0-40 0-31 .Cross section profile of Passage Reach X in Slough 9A,October 8,1984 .•................e CI -0 0 .'D 0 $0 •••0-41 0-32 Cross section profile of Passage Reach XI in Slough 9A,October 8,1984 .....................•...CI •••0-42 0-33 Cross section profi 1e of Passage Reach I in-Slough 11,October 18,1984 ..........0 •••••,g "••••••-0 •••0-43 0-34 Cross section profile of Passage Reach III in Slough 11,September 21,1984 ..........................0-44 0-35 Cross section profile of Passage Reach IV in.....Slough 11,September 21,1984 .........•................0-45 0-36 Cross section profi le of Passage Reach V in ~Slough 11,September 21,1984 ..........................0-46 0-37 Cross section profile of Passage Reach VI in Slough 11,September 21,1984 ..........................0-48 0-38 Cross section profile of Passage Reach VII in Slough 11,September 21,1984 ..........................0-49 0-39 Cross section profile of Passage Reach I in Side Channel 11,September 21,1984 ..........................0-50-xvii LIST OF APPENDIX TABLES (Continued) Table 0-40 0-41 APPENDIX 0 Cross section profile of Passage Reach VI in Slough 19,October 17,1984 •••.••.••.•••••••..•••.•••••0-52 Cross section profile of Passage Reach VII in Slough 19,October 17,1984 •••••••••••••••••.••••••••••0-53 - 0-42 Cross section profile of Passage Reach VIII in Slough 19,October 17,1984 •••••••••••••••••••••••••.••0-54 0-43 Cross section profile of Passage Reach IX in Slough 19,October 17,1984 ••••••••••••••••••••••••••••0-55 0-44 Cross secti on profi 1e of Passage Reach lin Slough 20,October 17,1984 ••••••••••••••••••••••••••••0-56 0-45 Cross section profile of Passage Reach VI in Slough 20,October 17,1984 ••••••••••••••••••••••••••••0-57 0-46 Cross section profile of Passage Reach I in Side Channel 21,October 16,1984 ••••••••••••.••••••••••••••0-58 ~l 0-47 0-48 0-49 0-50 0-51 .' 0-52 Cross section profile of Passage Reach II in Side Channel 21,October 16,1984 •••••••••••••••••••••••••••0-59 Cross section profile of Passage Reach III in Side Channel 21~October 16,1984 ••••••••••••••••••••••0-60 Cross section profile of Passage Reach IV in Side Channel 21,October 16,1984 •••.•••••••••.•••••••••••••0-61 Cross section profile of Passage Reach VII in Side Channel 21,October 15,1984 ••••••••••••••••••••••0-62 Cross section profile of Passage Reach VIII in Side Channel 21,October 15,1984 .•••••••••••••••••••••0-64 Cross section profile of Passage Reach IX in Side Channel 21,October 15,1984 •.•••••••••••••••••••••••••0-66 0-53 Cross section profile of Passage Reach I in Slough 21,October 15,1984 ••••••••••••••••••••••••.•••0-67 0-54 Cross section profile of Passage Reach II in Slough 21,October 15,1984 ••••••••••••••••••••.•••••..0-68 0-55 Cross section profile of Passage Reach IIIR in Slough 21,October 15,1984 ••••••••••..•••••••••..••••.D-70 xvi;; LIST OF APPENDIX TABLES (Continued) Table APPENDIX.D Cross section profil~of Passage Reach III in Slough 22,October 14,1984 ••••••••••••••••..•••••••••.0-73 Cross section profi 1e of Passage Reach I in Slough 22,October 14,1984 .••.••.••..••••••..•.••••••.0-71 Cross section profile of Passage Reach II in Slough 22,October 14,1984 .•••••••••••••.•••••••••••••0-72 Summary of lengths and relative water surface elevations upstream and downstream of selected passage reach cross sections collected during the 1984 open water field season •••••••••••••••••••••••e••••••••••••••••••••••c.eD-132 0-56 0-57 ~ 0-58 0-59 ~ APPENDIX E E-1 Comparison of water surface elevations to the mean daily mainstem discharge (cfs)obtained at the USGS gaging station at Gold Creek (USGS 15292000)duri ng the 1984 open water season ......•....•.......-•.............-............•...E-3 - E-2 Comparison of local flow measurements collected at selected slough,side channel and tributary study sites in the middle Susitna River to the mean daily mainstem discharge at Gold Creek (USGS 15292000) during the 1984 open water season •••••••••••••••••••••.E-10 xix .... I~ 1.0 INTRODUCTION 1.1 Background Preliminary field studies of passage conditions for adult chum salmon (Oncorhynchus keta)in selected slough and side channel spawning habi- tats of the mi~reach of the Susitna River (Figure 1)were conducted during the 1982 (ADF&G 1983a:Appendix B)and 1983 (Sautner et al. 1984)open-water field seasons.These studies evaluated the influence of selected channel geometry and hydraulic characteristics on chum salmon passage into and within these habitats.The 1982 and 1983 reports provided the basis for identifying locations presenting potential passage problems for salmon within slough and side channel habitats.In addition,these studies established interim salmon passage criteria (criteria curves)uti lized for estimating the mainstem di s- charges and local flows required to provide successful and unsuccessful passage conditions for adult chum salmon migrating into and within these habitats. This addendum revises and supplements salmon passage data previously reported in Sautner et al.(1984)and presents the results of the 1984 Passage Validation Studies (PVS).The 1984 PVS was undertaken to verify and/or refine the interim salmon passage criteria and flow requirements previously established in Sautner et al.(1984).The "initial salmon passage criteria curves presented in Sautner et ale (1984)were based on a review of limited salmon passage field data and observations collected during 1982 and 1983 combined with the professional judgement of project fisheries biologists and hydraulic engineers.Due to the limited field data available for the development of these curves,it was necessary to obtain additional field data in 1984 to validate the 198~salmon passage criteria.As indicated by the additional data and analyses from the 1984 PVS,the criteria curves from Sautner et al.(1984)were refined to more closely represent natural passage conditions for chum salmon in thi s report •. It was also necessary to refine the local flow analysis presented in Sautner et al.(1984).This analysis is primarily based on flow estimates derived from limited cross section data and associated rating curves,interpretation of aerial photography,and at some sites,from observations by fiel d personnel.Because of these 1imitations,only 38 of 74 passage reaches could be evaluated for the initial local flow analysi s.In addition,the accuracy of the estimates developed was questionable,as only limited flow measurements were available for comparison and validation.For these reasons,additional cross section and local flow data were collected during the 1984 PVS to provide a more complete data base to evaluate local flow requirements at all currently identified passage problem areas. To more adequately assess the effects of mainstem discharge and local flow on salmon passage conditions in slough and side channel habitats in 1984 ,it was necessary to further evaluate the relationship between these two water sources.The available hydrologic data bases of Susitna River habitats were used to evaluate the relationship between mainstem 1 SLOUGH a SIDE CHANNEL PASSAGE STUDY SITES WHISKERS CREEK SLOUGH o, MILES (Appro••SCQI,) 10 ! ~I Figure 1.Geographic location of passage study sites in slough and side channel habitats of the middle Susitna River,Alaska, 1984. 2 .- - ,~ I discharges and local flows within these habitats.This information will provide more reliable local flow data for evaluating passage conditions for the local flow analyses. 1.2 Obj ect i ves To address the deficient areas in the previous salmon passage analyses, the PVS was initiated during the 1984 open water field season to pursue the following field objectives: 1)Collect physical (hydraulic and substrate)and biological (salmon passage)data at various slough and side channel habitats in the middle Susitna River to determine if the previously established salmon passage criteria curves (Sautner et al.1984)are valid or required revisions;and, 2)Collect additional cross section and local flow data to expand and refine the local flow analysis presented in Sautner et al. (1984)• Preliminary results of the 1984 PVS were initially presented in a November 30,1984 draft techni ca 1 memorandum (ADF&G 1984).Based on these resul ts,the following objectives were addressed in this addendum to supplement the salmon passage analyses presented in Sautner et al. (1984): 1)Refine the 1983 passage criteria curves (Sautner et al.1984) whi ch were developed from data call ected during 1982 and 1983 and professional judgement; 2)Revise previously established mainstem discharge and local flow requirements for successful and unsuccessful chum salmon passage based on revisjons to the 1983 passage criteria curves; 3)Eva 1uate all new passage reaches estab1i shed duri ng the 1984 PVS to determine mainstem discharges and local flows required 'for successful and unsuccessful passage conditions; 4)Refine and expand the local flow analysis using additional cross section and local flow data collected during the 1984 PVS;and, 5)Evaluate the presently available hydrologic data bases of the middle Susitna River to evaluate the relationship between mainstem discharges and local flows at selected slough and side channel habitats. 3 .-. .- 2.0 METHODS 2.1 Site Selection Salmon passage conditions were evaluated at 13 slough and side channel sites in the mi ddl e reach of the Sus i tna Ri ver (Table 1).Wi th the exception of Side Channel 10,these sites represent the major slough and side channel spawning locations for chum salmon in the Susitna River drainage upstream of Talkeetna.Sloughs 8A,9,9A,11 and 21 are primary spawning areas for chum salmon while the remaining sites support lesser concentrations of spawning chum salmon.Although Side Channel 10 has not been utilized by spawning chum salmon in the past,it was selected for study because of its potential as a mitigation evaluation siteo Discharge related passage problems have been previously identi- fied at all the study sites (Sautner et ale 1984)with the exception of Slough 19.Slough 19 was included as a study site because spawning chum salmon had previously been observed at this site (Barrett et ale 1984) and no previous passage evaluations had been conducted. 2.2 Field Methods 2.2.1 Determination of Salmon Passage Criteria Data from field observations of migrating chum salmon were collected within passage reaches at various slough and side channel habitats to establish minimum passage requirements (lengths and depths)necessary to . provi de successful and unsuccessful salmon passage condi ti ons.Fi sh passage observations primarily focused on chum salmon due to their more restri ctive passage requi rements (Scott and Crossman 1973)and because they are the major salmon species presently utilizing slough and side channel habitats in the middle Susitna River (ADF&G 1983a:Appendix B). Three conditions were defined to classify the relative degree of difficulty encountered by salmon:1)successful passage,2)successful passage with difficulty and exposure,and 3)unsuccessful passage.Fish passage observations were subjectively ranked into one of these three categories based on the characteristics outlined below. Successful Passage:Fish passage into and/or within a spawning area is uninhibited.Characteristics of this category are: 1)exposure of the fish above water is negligible;and, 2)uninterrupted movement of the fish passing through a reach. Successful passage conditions would not adversely affect natural production of salmon upstream of the area. Successful Passage With Difficulty and Exposure:Fish passage into and/or within a spawning area is accompl1shed,but with stress and exposure to predation.Characteristics of this category are: 4 --_._---~---- Tabl e 1.Summary of passage study sites and correspondi ng river mil es ~ in the middle Susitna River. Study Site River Mile Whiskers Creek Slough 101.2 Mainstem 2 Side Channel 114.4 -. Slough 8A 125.3 Slough 9 128.3 Slough 9A 133.2 Side Channel 10 133.8 ~ Slough 11 135.3 Upper Side Channel 11 136.1 Slough 19 140.0 Slough 20 140.1 Side Channel 21 140.6 ~ Slough 21 141.8 ~ Slough 22 144.2 5 ,~ - 1)exposure of the dorsal surface of the fish above water; 2)one or more pauses by the fish (e.g.,stranding,changing directions,or resting)within a passage reach due to shallow water conditions;or, 3)repeated attempts by the fi sh to navigate a passage reach before succeeding. This condition of passage may potentially reduce the level of successful spawning in the area and,over a long period of time, may result in a decline in natural production upstream of the area. Unsuccessful passare:Fish passage into and/or within a spawning area may be accomplshed by a limited number of fish which,because of excessive exposure,are more susceptible to increased stress and predation.Characteristics of this category are: 1)absence of fish above a passage reach; 2)exposure of the dorsal surface of the fish above water including partial exposure of eyes,gills,lateral line or caudal fin; 3)one or more pauses by the fish within a passage reach result- ing in unsuccessful navigation;or, 4)death of the fish while attempting navigation of a passage reach. Unsuccessful passage conditions may eventually el iminate or greatly reduce the natural production upstream of the area. These field passage data were later used to develop the salmon passage criteria as described in Section 2.3.1. 2.2.2 Identification Of Passage Reaches Locations where potential salmon passage problems exist due to restric- tions imposed by the physical habitat (i.e,water depth)are referred to as passage reaches.A passage reach is defined as a portion of the channel,at the mouth of or within a study site,which is potentially limiting to salmon migration into spawning areas. Passage reaches were initially identified in the field by locating areas where water depth was potentially limiting passage of adult chum salmon. At each identified passage reach,a transect was establ ished perpen- dicular to the flow of water to represent the depth characteristics of the passage reach and provide a consistent point of measurement. Representative transects were establ ished at the shallowest or most critical point of the passage reach and marked with wood stakes and rebar headpins.The physical habitat characteristics of individual 6 passage reaches were defi ned by measuri ng 1engths,wi dths,and water depths using the established transect as a reference point.The criteria used to establish passage reach lengths,widths,and depths are presented below. Passage Reach Length:The longitudinal distance of a passage reach a'ong the tha 1weg channel defi ned by the upstream and downstream points at which water depth is no longer limiting to salmon passage. The length limits were defined at thalweg water depths of 0.50 feet and 0.67 feet which correspond to threshold passage depths presented in pasrage Criteria Curves I and II,respectively (Sautner et ale 1984)• Passage Reach Width:The distance from left water's edge (LWE)to right water's edge (RWE)of a passage reach transect. Passage Reach Depth:The depth of water within a passage reach which a fish must navigate through in order to proceed upstream.In the field,thalweg dept~1I!t~iID!!m~w9~Jl!h)was measured as an indica- tor of the wat'eraeptfi 'affecting pass'age.The point of thalweg depth at a passage reach transect was marked with a flagged spike or a staff gage for a consistent point of measurement.J:tQ)Y:fi!ver, fQrana.lyticaL".purp()ses it has bE!en determined that the tha1weg depthwas,.nQ:t ..~.rep.resentative variable of pass~gecondt!:lons.For this reason,,~sa9.e-_depth,defined as an averag~()f the mean depth and .thalweg depth at apassage.reach transect,was used for analytfcalpurposes.As a result,thalweg depth measurements were converted to passage depths during the data analysis using cross section survey data (see Section 2.3.1)and were used in all subsequent passage analyses. Passage reach lengths and widths were measured with a fiberglass survey- or's tape.A standard surveying rod or staff gage was used to measure the thalweg depth at each transect.Passage reach 1ength,wi dth,and depth measurements were collected at the same time observations of ftsh passage were made. 2.2.3 Physical Habitat Variables Used to Evaluate Passage'Reach Conditions Selected physical habitat data were collected to aid in evaluating the effects of mainstem discharge and local flow on passage reach conditions at slough and side channel study sites.Habitat data collected included survey data for development of thalweg and cross section profiles, substrate and channel morphology data,and stage and flow measurements. Detailed procedures used in the collection of these data are presented in ADF&G (1983b),Quane et ale (1984),and Sautner et al.(1984). 1 Criteria Curve II was eliminated following an analysis of the data and all passage reach lengths previously defined in the field by the 0.67 foot depth were redefined from thalweg profiles using the 0.5 foot depth (see Section 2.3.1). 7 - - - - - Thalweg surveys had been completed during the 1982 and 1983 field seasons at all passage study sites except Slough 19.Therefore,survey data for the development of a thalweg profile were collected at Slough 19 to complete the set of thalweg profiles for all study sites.The Slough 19 thalweg data were surveyed to a temporary bench mark (TBM)and included additional data points at passage reaches to better define these areas. Cross section profile data had been sporadically collected at passage reaches during the 1981,1982 and 1983 field seasons.A primary objective of the 1984 PVS was to obtain cross section profiles at as many study sites as possible.Cross sections were surveyed at passage reach transects which were typically located at the shallowest or most critical point of the passage reach.These data were collected to provide an accurate representation of the channel morphology present at each passage reach.Included in the cross section surveys were measure- ments of the streambed and water surface elevations at the upstream and downstream l-imits of a passage reach. Substrate conditions at each passage reach were eval uated to charac- terize the influence of substrate and channel configuration on salmon passage conditions.Substrate data were collected by vi sua lly cl ass i- fying the substrate present in the passage reach into the two dominant size groups based on the substrate size classification system presented in Table 2. The channel confi guration of each passage reach was al so subjectively ranked as either a unifonn or a non-unifonn channel.A unifonn passage reach was characterized by a relatively straight,unbraided channel that concentrated the flow of water through one main channel.In contrast,a non-unifonn passage reach was characterized by a braided,irregular channel that dispersed the flow of water over a wide area. Stage and flow data were collected during the 1982 and 1983 open water .field seasons.Additional stage and flow data were collected at selected study sites during the 1984 field season to complement these data.Staff gages were utilized to obtain stage data at passage reaches where backwater and/or breaching effects were not completely identified. All mainstem discharge values related to these staff gages were referenced from the USGS gaging station at Gold Creek [USGS 1984 (gage #15292000,RM 136.7)]unless otherwise indicated.Local flow measurements were collected within slough and side channel sites using either a Marsh-McBirney electrical current meter or a Scientific Instruments Pygmy flow meter following techniques described in ADF&G (l983b)• 8 Table 2.Substrate size classification system used for the 1984 Passage Validation Studies. Substrate Type Symbol Size Class SILT SI very fines SAND SA fines SMALL GRAVEL SG 1/4-1" LARGE GRAVEL LG 1-3 11 ~ RUBBLE RU 3-5'· COBBLE CO 5-10 11 BOULDER BO 1011 ~, 9 I~ i"'" I - - ..- .- ....., I 2.3 Analytical Methods 2.3.1 Salmon Passage Criteria The analytical approach for evaluating the physical conditions affecting salmon passage in sloughs and side channels involved two steps.The first step involved the development of plots of passage criteria data (passage depth versus passage reach length)to describe successful and unsuccessful passage conditions.Plots were constructed for uniform passage reaches ~non-uniform passage reaches,and all passage reaches combined.The second step involved a comparison of these passage criteria plots to the previously developed passage criteria curves presented in Sautner et al.(1984)to determine if revisions to the previous passage cri teria were requi red to more accurately represent natural passage conditions. Prior to development of the passage criteria plots,the thalweg depth data required adjustments in order to be comparable to the 1982-1983 passage criteria.Thal\liegdepthmeasurements collected in the field were conv.ert.ed to .l2-~S~~_~t~~-,~~~~~~_J!,lj'!hich i ~_c-o_nsJder_ed tQ_...Q~,a .....,n:tor~ accurate,nd,cator.ofthewate.r_.ggp_:th-~_affectlJ)9_S9JIJlPn,p~ssage.Passage depth ls'Cfeflfie·cras ana'ver-age of the mean depth and the thalweg depth ()f'a-passage--reacn'franse~"t~-"'--"-«'-"""'~'-"""'-'-'--'..,.. A relationship between thalweg and passage depth was developed using linear regression techniques.The surveyed cross section data were used to evaluate the mean depth corresponding to a specific thalweg depth. The mean and thalweg depths were averaged to obtain the passage depth. Tha lweg depths were selected to range from 0.1 to 1.a feet to represent a typical range of conditions at passage reaches.Passage reaches within Sloughs 8A,9,9A,11 and 21~Upper Side Channel 11 and Slough 21 were used in the analysis.Cross sections where multiple channel s existed (e.g.braided channels)were excluded due to their .non-uniformity resulti'ng in varying water surface elevations within the cross section. ~~e4Ui:~io~i~~i[j.Y;~,based on the above data,to estimate p~e.....d.el2ths (d;Q)from()tha...1.w.e g....de.p....th..s.(d t ).The .Y'~J~~_1gn~_~J£,_._,~~~._.acorrelationcoeff,cient r eguaLtQ.,.9.~~,... dp =0.75 dt 1.02 where d p =Passage Depth and dt =Thalweg Depth An adjustment was also required for a portion of the passage length data collected in the field.Initially,·passage reach lengths were measured based on thalweg water depth limits of 0.50 feet and 0.67 feet,which correspond to threshol d passage depths presented in Cri teri a Curves I and II,respectively (Sautner et al.1984).However,during the 1984 field season it became apparent that passage reach length measurements using the Criteria Curve II thalweg water depth limit of 0.67 feet 10 included areas which did not present passage problems to migrating salmon.Field observations during 1984 indicated that a thalweg water depth of 0.50 feet was a more appropriate upper 1 imit.Subsequent analysis of the data also supported the elimination of 0.67 feet as a thalweg water depth limit in the passage analysis.Therefore,those lengths measured using a thalweg water depth limit of 0.67 feet were adjusted to represent lengths established by using a thalweg water depth of 0.50 feet.This was accomplished by drawing a scaled diagram of each affected passage reach including appropriate streambed and water surface elevations based on thalweg and cross section survey data.A new passage reach length was then measured directly from each diagram using an upstream and downstream thalweg water depth limit of 0.50 feet. Following the appropriate adjustments to passage length and depth va 1ues , a11 data poi nts were plotted by categori es of fi sh passage (successful,successful with difficulty and exposure and unsuccessful). Three plots of the passage data were developed depicting 1)data collected at unifonm passage reaches,2)data collected at non-uniform passage reaches,and 3)all data combined. The original criteria curves were then superimposed on these passage criteria plots to evaluate the accuracy of these previously established curves by comparing the distribution of the passage data in relation to the criteria curves.Based on the results of these comparisons, appropriate revisfons were made to the passage criteria to better represent the relationship between passage reach length and passage depth. 2.3.2 Passage Reach Evaluations """'" - - ~, This study utilizes the same basic analytical approach for evaluating passage conditions in the middle Susitna River as was presented in Sautner et ale (1984).This conceptual approach is based on a procedure -" involving three steps. 1)Definition of the salmon passage criteria (water depth and reach length)required for successful and unsuccessful salmon passage (The analytical methods utilized to complete this step are presented in section 2.3.1.). 2)Identification of all the passage reaches within the selected study sites which do not provide successful passage conditions for migrating salmon under all flow conditions based upon the passage criteria established in step one. 3)Evaluation of each passage reach in tenns of its hydraulic 'characteristics,and determination of mainstem discharges and/or local flows required to provide successful passage conditions as defined in step one. The final step consists of three hydraulic analyses:a breaching analysis,a backwater analysis,and a local flow analysis.The first two of these analyses evaluate the independent effects of rnainstem 11 ..- - - breaching and backwater on passage conditions at passage reaches.The third analysis evaluates the independent effects of local flow on passage conditions at selected passage reaches only.The relative influence of mainstem discharge on local flow was also evaluated. In each of the three analyses,length and depth of passage reaches were used as the primary criteria to evaluate salmon passage conditions.The discharge and/or flow requirements resulting from each analysis are defined for conditions that fulfill threshold passage conditions for successful and unsuccessful passage.By defining these upper and lower boundaries,the middle condition of llsuccessful with difficulty and exposure ll is also defined. A flow duration curve [presented in Sautner et al.(1984)]was developed for the period from August 20 to September 20 based on mainstem discharge data collected at Gold Creek over a 35 year period (USGS gage #15292000).This curve was used to evaluate the percentage of time that the discharge requirements for passage reaches are equalled or exceeded. The mainstem discharge data collected at Gold Creek were also used to evaluate the number of years that the discharge requirements for passage reaches were equalled or exceeded for at least one day during the study period. 2.3.2.1 Verification of Passage Reaches Passage reaches were initially identified in this study from field observations made during the 1984 open water season (see Section 2.2.2) using salmon passage criteria previously establ ished in Sautner et al. (1984).As a result,it was necessary to reevaluate the passage reaches initially identified in the field based on the revised 1984 passage criteria thresholds to determine if they still qualified as passage reaches under the new passage criteria.The verification process consisted of comparing the range of physical conditions observed at each passage reach with the revised passage criteria thresholds.Passage reaches which fell below the successful passage threshold for at least one set of flow conditions were verified as passage reaches for further analysis.Passage reaches which consistently fell above the successful passage threshold for the observed range of physical conditions were eliminated from further consideration since this was an indication that passage problems did not exist at these sites. All passage reaches thus identified and verified were sequentially numbered in ascending order beginning at the downstream end of each site.The upstream limit of the identification procedure was defined as the first passage reach beyond the upstream 1imit of util ization by spawning salmon. 2.3.2.2 Breaching Analysis The breaching analysis in this study follows the same methods that were presented in Sautner et al.(1984).Since breaching affects all passage reaches within a site,the breaching analysis for each site is appli- 12 cable to the entire study site.Initial breaching and controlling discharge values have been previously determined for each slough and side channel study site with the exception of Slough 9A (Quane et a1. 1984;Sautner et al.1984).Estimates of the initial breaching and controlling discharge values for Slough 9A were determined from stage data,aerial photos and field observations.Passage reach conditions are considered to be successful under controlling discharge conditions. 2.3.2.3 Backwater Analysis The backwater analysis utilized in this study is conceptually similar to the analysis presented in Sautner et al.(1984)with the exception that specific steps involved in the analysis were modified to fit the revised passage criteria.This analysis evaluates the influence that mainstem backwater has on passage condi ti ons at passage reaches located in or near the mouth area of each study site prior to breaching.As in the 1984 analysis,local flow was considered to be an insignificant factor affecting backwater relative to the effects of mainstem discharge and was therefore not considered in the analysis. Passage conditions are affected by backwater when the water surface elevation of the mainstem influenced backwater submerges the highest point of elevation within a passage reach.For successful conditions the backwater must submerge the passage reach by the appropriate water depth which corresponds to the revised passage criteria for a reach length of zero feet.Thus,the first part of the backwater analysis invol ved computing the appropriate water surface el evations requi red to provide successful and unsuccessful passage conditions at each passage reach affected prior to breaching.Mainstem discharges corresponding to these water surface elevations were calculated from rating curve equa- tions representing the hydraulic relationships in the mouth areas of each study site.These mainstem discharge values represent the minimum discharges required to meet the threshold conditions for successful and unsuccessful passage. 2.3.2.4 Local Flow Analysis The primary objective of the local flow analysis was to estimate the amount and frequency of occurrence of the local flow which is required to provide successful or unsuccessful salmon passage conditions at a passage reach.The specific analysis followed is outlined below and is depicted schematically in Figure 2.Results of the analysis are approximate;many assumptions were made for the analysis,each of which can potentially introduce error to the estimates. 1.Obtain a surveyed cross section and water surface el evation that are representati ve of the most di ffi cul t passage condition within a passage reach. 2.Determine the energy gradient at each passage reach which is assumed equal to the steeper of the water surface slopes upstream and downstream of the cross section. 13 ~, ~, I.SURVEYED CROSS SECTION AND WATER SURFACE ELEVATION DATA WATER SURFACE ELEVATIONS UPSTREAM AND DOWNSTREAM OF THE CROSS SECTION 2.ENERGY GRADIENT DISCHARGE MEASUREMENTS t 3.LOCAL FLOW DI STRI BUTIO N ANALYSIS (APPENDIX A) ..... - - 4.CALIBRATE MANNING'S EQUATION (APPENDI X A) 5.REQUIRED DEPTHS FROM REVISED PASSAGE CRITERIA , 6.EVALUATE LOCAL FLOW REQUIRED FOR SUCCESSFUL AND UNSUCCESSFUL PASSAGE - -- PRECIPITATION RECORDS I 7.LOCAL FLOW 1---..4 FREQUENCY OF 1--1lI----~ OCCURRENCE (APPENDIX A) Figure 2.Schematic diagram of steps followed in the local flow analysis at a passage reach. 14 3.Determine the local flow corresponding to the surveyed water surface elevation at each passage reach. 4.Given passage reach substrate size and channel uniformity, calibrate Manning's equation to the surveyed water surface e-levation and to the corresponding local flow by selecting a Manni ng r S roughness coeffi ci ent from a range of acceptable values. 5.Select the required passage depths from the given reach length and the revised passage criteria for successful and unsuccessful passage. 6.Determine the local flows corresponding to the required passage depths for successful and unsuccessful passage using the calibrated Manning's Equation. 7.Estimate the frequencies of occurrence of these local flows which correspond to successful and unsuccessful passage conditions. Cross section and water surface elevation survey data were collected following methods presented in Section 2.2.3.For assumed uniform flow conditions at passage reaches,the water surface slope is equal to the energy gradi ent.The energy gradi ent was generally taken to be the steeper of the upstream and downstream water surface slopes.In cases where·the slope was not measured in the field,the water surface slope was obtained from thalweg profile data. To provide estimates of the local flow corresponding to the surveyed water surface elevation at a passage reach,local flow measurements were collected at selected study sites as described in Section 2.2.3.At some passage reaches,flow was measured concurrently with the water surface elevation measurements.At passage reaches lacking corre- sponding flow measurements,a local flow distribution analysis was conducted to relate known flows at other passage reaches and discharge gages to the flow at these passage reaches.A detailed description of this analysis is provided in Appendix A. Manning's Equation was used to establish a relation between required passage depths and local flows at the passage reaches.The equation was calibrated for each passage reach where measured water surface elevation data were available.At sites where water surface elevations were not obtained,the equation was ca.librated by comparison with equations from nearby and similar passage reaches.At nearly 40 percent of the passage reaches,Manning's Equation could not be calibrated by using reasonable roughness coefficient values;at these sections,a concept of excluded flow was introduced to account for the difference between the measured and calculated flows.Excluded flow is an assumed constant flow volume which flows between and through the rocks in areas of the cross section that are inadequately surveyed using normal techniques.The analytical procedures and assumptions for cal ibration of Manning I s Equation are described in Appendix A. 15 ..... - -- ,,- The estimated local flows required for successful and unsuccessful passage were analyzed to evaluate their frequencies of occurrence. Groundwater infiltration and precipitation runoff were assumed to be the sources for local flow in the sloughs and side channels.Breaching and backwater effects were not considered.Appendix A presents the detailed methods used to evaluate the frequency of occurrence of the local flow at a passage reach. 16 ..... - ""'" 3.0 RESULTS 3.1 Salmon Passage Criteria Physical habitat data were collected during the 1984 open water field season to describe the physical conditions affecting passage of adult chum salmon into and within spawning habitats of the middle reach of the Susitna River.These data were collected at passage reaches within all study sites,with the exception of Side Channel 10.A summary of the data collected during 145 observations of chum salmon passage is presented in Table 3.Each row of data represents a single set of passage observations collected at a specific passage reach.Included in each data set is the number of observations recorded for each category of passage corresponding to the given set of physical parameters col- lected at the passage reach on the same day.For example,in the second row,six observations of unsuccessful passage were recorded at a passage reach which had a thalweg depth of 0.18 feet,a passage depth of 0.13 feet,a passage reach 1ength of 62 feet,and a uniform channel wi th large gravel/small gravel substrate.Some data sets include obser- vations under two categories of passage,indicating that for the given set of physical conditions some chum salmon were more successful negotiating the passage reach than others. The data summarized in Table 3 are plotted on the criteria curves presented in Sautner et a1.(1984)in Figures 3 and 4.Figure 3 corr~sponds to Criteria Curve I and shows data collected at passage reaches characterized by a uniform,unobstructed channel.Fi gure 4 corresponds to Criteria Curve II and shows data collected at passage reaches with a non-uniform,obstructed channel.The entire set of data collected at both types of passage reaches are plotted on Criteria Curve I in Figure 5. The best visual fit of the data to the previous curves appeared to be for the plot of Criteria Curve I and the combined passage data. However,it was determined that additional revisions of Criteria Curve I were necessary to better represent the passage data"Specific field data were not available to support the sharp downward inflections in the 0-20 foot range of the original curve and field observations of chum salmon passage during 1984 did not support the original curve in this range.Therefore,the passage criteria for both successful and unsuc- cessful passage were revised based,~n a visual best fit of two straight lines to the plotted data points (Figure 6).These lines,referred to as "threshol d 1imits,II represent thethresho1 d criteria for successful and unsuccessful passage of chum salmon in the middle Susitna River. Tb.e_area between theseli nesrepresents.c,",the.cancltti on .under which succ~~s,f~I~pa'Ssa'geoCC(h;'rea-'wllh'drfffcul ty and exposure.--··'". A comparison of the new passage threshold limits to the original Crite- ria Curve I is presented in Figure 7.The distribution breakdown of passage data within each passage category in re1 ati on to the revi sed passage criteria is presented in Figure 8. 17 Table 3.A summary of chum salmon passage data collected at passage reaches within slough and side channel study sites in the middle Susitna River during the '984 open water season. Thalweg Depth (Feet) Passagea Depth (Feet) Passage Reach Length (Feet) Number of Observations for each Cate~0f¥of Salmon Passage Successful1 lcult Unsuccessful Passage Passage Passage Channel Con- figuration Substrateb Type 0.12 0.18 0.18 0.19 0.19 0.20 0.20 0.22 0.22 0.25 0.26 0.26 0.28 /jl}:29 0.29 0.29 0.30 0.30 0.30 0.31 0.32 0.32 0.33 0.34 0.35 0.36 0.36 0.37 0.38 0.38 0.39 0.39 0.41 0.41 0.42 0.44 0.44 0.45 0.48 0.50 0.53 0.54 0.60 0.62 0.68 0.69 0.70 0.74 0.76 0.81 0.09 0.13 0.13 0.14 0.14 0.15 0.15 0.16 0.16 0.18 0.19 .0.•19O:t()"=-- 0.21, 0.21 0.21 0.22 0.22 0.22 0.23 0.23 0.23 0.24 0.25O.lEr·· 0.26 0.26 0.27 0.28 0.28 0.29 0.29 0.30 0.30 0.31 0.32 0.32o.n 0.35 0.37 0.39 0.40 0.45 0.46 0.51 0.51 0.52 0.55 0.57 0.60 103 62 113 62 253 38 109 88 281 263 121 121 54 59 73 95 80 85 165 148 79 526 421 38 75 35 40 58 27 156 25 75 23 65 25 38 45 35 7 19 137 33 146coOc Oc Oc Oc OC OC Totals 1 1 1 1 2 2 5 1 2 1 1 3 1 2 24 8 , 3 2 5 6 2 1 3 2 3 2 1 5 3 2 1 8 58 1 6 1 1 1 1 6 1 1 1 1 1 1 1 1 1 9 2 1 4 1 1 1 4 1 1 1 10 63 Uniform Uniform Non-uniform Uniform Non-uniform Non-uni form Non-uniform Non-uniform Non-uniform Non-uni form Non-uniform Non-uniform Non-uniform Non-uniform Non-uniform Non-uniform Uniform Uniform Non-uniform Non-uniform Uniform Non-uniform Uniform Uniform Non-uniform Uniform Uniform Non-uniform Uniform Non-uniform Non-uniform Non-uniform Non-uni form Non-uniform Non-uni form Uniform Non-uniform Uniform Uniform Uniform Non-uniform Non-uni form Non-uniform Non-uniform Non-uniform Non-uniform Non-uniform Non-uniform Non-uniform Non-uniform SA/LC LC/SG RU/eo LG/SG LG/Se RUILG RU/LG LG/RU CO/RU LG/RU BoiS I LG/SG LG/SG LG/Se BOiS I LG/SG LG/RU LG/RU SI/SA LC/RU LG/RU CO/RU LG/SA SAlLG CO/LG SA/SI LG/RU RU/LG LG/RU RU/CO RU/eo RU/LG RU/eo RU/LG RU/CO LG/RU SI/SA LG/RU RUILG LG/SG CO/RU LG/SG CO/LG RU/CO CO/RU LG/SG eO/RU LG/Se CO/RU LG/CO '"""I - ~, a b c Passage depth values were calculated using the equation,dp=0.75d t '·02, where dp =passage depth,and dt =thalweg depth. Abbreviations of substrate type defined in Methods Section (see Table 2). Passage reach 1ength was not measured for thi s set of observati ons because water depth was clearly adequate for successful passage conditions. 18 1 1 J 1 J 1 J 1 )1 1 J 1 i ) CRITERIA CURVE I 1.0 i i CLASSIFICATION OF PLOTTED r-I .3 0.9 -I I PASSAGE CRITERIA DATA t-1.2oSUCCESSFULPASSAGE 0.8 -I I +SUCCESSFUL PASSAGE WITH l-1.1 DIFFICULTY AND EXPOSURE o UNSUCCESSfUL PASSAGE f-1.0 -0.7 -I -t-f-0.9tiwwW LL 0.6 -'-0.8 !!:-:I:::J: t--0.7 ~0..0.5 -w w 0 -0.6 a.....LLJ 0.4 -SUCCESSFUL PASSAGE m\0 ~D D 0.5 ~ II...;,..,J ~0.3- +I:\tSUCCESSF.UL PASSAGE WITH DIFFICULTY --0.4 ~a..t-4L",",",...0.30.2 -I ~".. .II" UNSUCCESSFUL PASSAGE•.1-0.2 0.1 -I <> 0.0 ~~0.1 I i I I I I i I i I I I I i i i I I I 0.0 0 20 40 60 80 100 120 140 160 180 200 PASSAGE REACH LENGTH (FEET) Figure 3.Chum salmon passage criteria collected at uniform passage reaches at selected slough and side channel sites plotted with Criteria Curve I. CRITERIA CURVE ][ 1.3 1.2 1.1 1.0 ~ 180 o o + CLASSIFICATION OF PLOTTED PASSAGE CRITERIA DATA o SUCCESSFUL PASSAGE +SUCCESSFUL PASSAGE WITH DIFFICULTY AND EXPOSURE o UNSUCCESSFUL PASSAGE o 00<> + •UNSUCCESSFUL PASSAGE o • 60 80 100 120 140 PASSAGE REACH LENGTH (FEET) •<> 40 <> 20 SUCCESSFUL PASSAGE -0.9 ~ w LL0.8- X 0.7 ~ w •SUCCESSFUL PASSAGE WITH DIFFICULTY O.6 ~ +0.5 ~ ...J 0.4 ;i! t- 0.3 0.2 0.1 I • • •iii • , , • • • • •iii !!'0.0 180 200 LO 0.9 0.8 -0.7~ ~0.8 . :t: t-o.:0.5w 0 N ~O.4a « (J) ~0.3 0.: 0.2 0.1 0.0 . 0 Figure 4.Chum salmon passage criteria collected at non-uniform passage reaches at selected slough and side channel sites plotted with Criteria Curve II. ..~~J'II J I i J I j J ,J J J )J ~.i/i )-)1 J I )1 J 1 1 J _._)} CRITERIA CURVE I 1.3 I 1.2 1.1 1.0 180160 + CLASSIFiCATION OF PLOTTED PASSAGE CRITERIA DATA o SUCCESSFUL PASSAGE +SUCCESSFUL PASSAGE WITH DifFICULTY AND EXPOSURE OUNSUCCESSFUL PASSAGE <> <><>UNSUCCESSFUL PASSAGE <> <>• 60 80 100 120 140 PASSAGE REACH LENGTH (FEET) 40 <> IJct •SUCCESSFUL PASSAGE [] 20o 1.0 i I I -0.9 ~ w 0.8 != ::J: 0.7 t: w 0.6 a (!) +0.5 ~.~ +SUCCESSFUL PASSAGE WITH <>0.4 ~ •DIFFICULTY .- <><>0.3" 0.2 0.1 0.0 ~I I I I I I I I I I I I I I I I I I I ~0.0 200 0.8 0.1 0.2 0.9 i='0.7 ww 11..0.6-:I:.-0-0.5wa ~O.4 ~0.3 a. N..... Figure 5.Chum salmon passage criteria collected at all passage reaches within selected slough and side channel sites plotted with Criteria Curve I. SALMON PASSAGE CRITERIA THRESHOLDS o SUCCESSFUL PASSAGE +SUCCESSFUL PASSAGE WITH DIFFICULTY AND EXPOSURE o UNSUCCESSFUL PASSAGE 00 o•<> o 1.0 1 I CLASSIFICATION OF PLOTTED I-1.3 PASSAGE CRITERIA DATA J-1.2 I-I.I 0.8 - 0.1 - 1--0.2 ~tOol 0.0 I I I I I I I i I I • •Ii.I I I i 0.0 20 40 60 80 100 120 .140 160 180 200 PASSAGE REACH LENGTH (FEET) 0.9 - 1.0 -0.7 -~0.9 ~ ~w_0.6 0.8 ~ x Iti:0.5 0.7 Ii:w wa+0.6 a w 0.4 II (!)~D D SUCCESSFUL PASSAGE +0.5 ~ m0.3 4ti II SUCCESSFUL PASSAGE WITH DIFFICULTY 0 4 <l«"\Ito ++o·:I:~~.~ o 2 <>0.3•<>0 UNSUCCESSFUL PASSAGE N N Figure 6.Revised passage criteria thresholds for successful and unsuccessful passage conditions of chum salmon within slough and side channels in the middle Susitna River. J B J .~.1 J t •I J J ,J ,.~j .~ J I 1 J 1 )}))J i i J 1 1 o SALMON PASSAGE CRITERIA THRESHOLDS 1'.0 •,1-_-CRITERIA CURVE I I-1.3 0.9 -f I (1982 -83 DATA) PA A 1-1.2 -.SS GE CRITERIA THRESHOLDS 0.8 i I (1984 DATA).r 1.1 LINE A LINE 8 -10~O.7 _COORDINATES·COORDINATES·• w .JL J....-..JL.J....--0 9 t=w 0 0.32 0 020 .W~0.6 _200 0.37 200 025 ~:c ~0.8- ~I~0.5 _-0.7 t: N a SUCCESSFUL PASSAGE -0 6 ~ w W04-.~.~~A ._-----0.5 ~ CJ)------~0.3 -,,.---------------------------.......:.,'SUCCESSFUL PASSAGE WITH DIFFICUL TV AND EXPOSURE _--------O.4 ~ B ----------.~0.21 "-0.3 --;UNSUCCESSFUL PASSAGE I-0.2 0.1 - ~~O.I 0.0 I I I I I I I I I I I I I I I I I I I 0.0 20 40 60 80 100 120 140 160 180 200 PASSAGE REACH LENGTH (FEET) Figure 7.Comparison of revised passage criteria thresholds for successful and unsuccessful passage of chum salmon with Criteria Curve I.(*line A and line B coordinates represent passage depth values;the thalweg depth scale is presented for comparison purposes only.) 1.0 0.9 0.8 ~0.7 ~ '-'"0.6 :I: Ii:0.5LaJ 0 LaJ 0.4N~.J::>. ~0.3 0.2 0.1 0.0 SALMON PASSAGE CRITERIA THRESHOLDS DISTRIBUTION OF FISH OBSERVATIONS FOR EACH PASSAGE CATEGORY- 0 %OBSERVATIONS OF SUCCESSFUL PASSAGE-+%OBSERVATIONS QF SUCCESSFUL PASSAGE WITH DIFFICULTY-AND EXPOSURE 0 %OBSERVATIONS OF-UNSUCCESSFUL PASSAGE - -083 %+19 %SUCCESSFUL PASSAGE -017"0 +60 %<)33 % SUCCESSFUL PASSAGE WITH DIFFICULTY +21 %<)67 0/0 UNSUCCESSFUL PASSAGE- •• • •••I ••••,.-•I I I I I o 20 40 60 80 1 00 1 20 1 40 PASSAGE REACH LENGTH (FEET) 160 180 200 Figure 8.Percent distribution of chum salmon passage data for each category of passage in relation to the revised passage criteria thresholds. ,1 J J J J J J i J J ~J ,1 J .1 J .... ..... 3.2 Passage Reach Evaluations A total of 85 passage reaches were identified within selected middle river slough and side channel study sites during the 1984 open water season (Table 4).Selected physical characteristics used to evaluate passage conditions at each of these passage reaches and cross references of these passage reaches to those previously identified in Sautner et a1.(1984)are also included in Table 4. Locations of identified passage reaches are presented on passage reach distribution maps and thalweg profiles of each study site in Appendices Band C,respectively.Summaries of additional hydraulic data collected during the 1984 open water season are presented in Appendix D (Cross Sectional Data)and Appendix E (Stage and Discharge Data). 3.2.1 Breaching and Backwater Analysis Initial breaching and cantrall ing mai nstem di scharges affecting passage reaches within study sites are summarized in Table 5.Mainstem discharges required to provide successful and unsuccessful salmon passage conditions from backwater effects at study sites are presented in Table 6.Percent exceedence values for controlling mainstem discharges and mainstem discharges required for successful passage conditions are included in Tables 5 and 6,respectively.Percent exceedence values were derived from a 35 year discharge record at Gold Creek (USGS gage #15292000)for the August 20 -September 20 salmon spawning period.The percent of.total time values were taken from the flow duration curve,whereas,the percent of years frequency values indicate the relative number of years that the mean daily flow exceeded the indicated flow for at least one day during the period. The exceedence frequency based on time ref1 ects the average 1ength of time in a peri ad of record that the i ndi cated flow is equa 11 ed or exceeded for the 32 days from August 20 to September 20 "(including start and end dates).For examp1 e,at Passage Reach II in Slough 8A (Tab1 e 6),the exceedence frequency of 45 percent,which corresponds to a discharge of 16,000 cfs,would indicate that on the average,14 days (45 percent of 32 days)would have daily discharges equal to or in excess of 16,000 cfs.The daily mainstem discharge exceedence curves for 10,50 and 90 percent of the time are presented in Figure 9. The exceedence frequency based on years reflects the number of years that the indicated flow is equalled or exceeded for at least one day during the study period.For the example above using 16,000 cfs,the exceedence frequency based on years is 94 percent.That is,33 of 35 years had at least one day during the study period with a mean daily discharge equal to or greater than 16,000 cfs. 3.2.2 Local Flow Analysis Estimates of local flow corresponding to successful and unsuccessful passage conditions at selected passage reaches within study sites are 25 Table It.A summary of middle Susltna River passage reaches with selected physfcal characteristics which were Identified durfng the 1984 open water season.A cross reference list to passage reaches deffned In S~utner et 01.(1984)Is Included. N 0\ Study Site (River Hlle) Whiskers Creek Slough (101.2) ~Ialnstem 2 Side Channel (114.1t ) Slough 8A (125.3) Slough 9 (128.3) Passage Reach a 19/1li 195 Report Addendum I II I III II I I II II III IIll IVl IIIR IVR IVR VR VR -- VIR VIR VIIR VIIR VIIIR VillA I I II II III III III IV III V_.VIL IV VIR V VIIR VI VIIIR VII .- VIII IXR IX XA I I II II III III IV IV V V ___Physical Characterlltl~1 of Palsage Re~ch Malnltom Shallowest Dfscharge Depth lft)b lengthC (ch)Thalweg Passage (ft) 7,380 0.25 0.18 35 7,380 0.20 0.15 63 7,080 0.25 0.18 32 7,080 0.24 0.17 168 7,080 0.05 0.0"209 7,080 0.20 0.15 310 7,080 0.13 0.09 34 7,080 o."0.10 21t3--_...--7,080 0.21 0.15 84 7,080 0.00 0.00 81t 7,080 0.12 O.Og 318 6,750 0.35 0.26 160 6,780 0.18 0.13 229 6,780 0.30 0.22 27 6,780 0.15 0.11 116 6,780 0.35 0.26 174 6,780 0.18.0.13 65 6,780 0.22 0.16 26 6,780 0.31.0.23 213 6,780 0.11 0.08 150.-_.----6,780 0.13 O.Og 136 6,780 0.00 0.00 171 10,300 0.30 0.22 342 10,300 0.37 0.27 340 10,300 0.33'0.24 421 10.300 0.36 0.26 35 10,300 0.44 0.32 219 Passaged Evaluation Un success ful Unsucces$ful Unsuccess ful Unsuccessful Unsuccessful Unsuccessful UnsucceSSful Unsuccess fu I Unsuccessful Unsucceu ful UnsuccessfUl Successful/Difficult Unsuccessful Successful/Difficult Unsuccessful Successful/Difficult Un success fu I Unsucceu ful Unsuccessful Unsuccess ful Unsuccessful Unsuccessful Unsuccess fu I Unsuccessful Successful/Difficult Unsuccessful Successful/Difficult Successful/Difficult J ~1 J I J ,J 1 )l J J I ], ')1 1 1 J J J J 1 j Table 4.(Conti nued I. Passage Reach a Ph\sical Characteristics of Passage Reach Halnsten Sha lowest PassagedStudySite19841985DischargeDepth(ft)b .~engthC (River Hlle)Report Addendulll (cfsl fhlll"eg Passage (tt)Evaluation Slough 9A _.I 6.600 0.19 0.;"74 Unsuccessful (133.21 I II 10,700 0.43 0.32 15 Successful/Difficult II III 10,700 0.37 0.27 78 Successful/Difficult III IV 10,700 0.38 0.28 27 Successful/Difficult III V 10.700 0.35 0.26 54 Successful/Difficult IV VI 10.700 0.33 0.24 54 Successful/Difficult V VII 10.700 0.35 0.26 19 Successful/Difficult VI VIII 10.700 0.32 0.23 223 Unsuccessful VI/.-.._.----.- VIII IX 10.700 0.38 0.28 22 Successful/Difficult IX X 6.600 0.10 0.07 119 Unsuccessful X XI 6,600 0.15 0.11 203 Unsuccessful Side Channel 10 I I 12.200 0.00 0.00 304 Unsuccess fu I (133.8)II 11 12.200 0.00 0.00 365 Unsuccessful III III 12.200 0.00 0.00 40 Unsuccessful IV IV 12,200 0.00 0.00 35 Unsuccessful V V 12,200 0.30 0.22 10 Successful/Difficult VI VI 12,200 0.00 0.00 200 Unsuccessful VII VII 12.200 0.00 0.00 263 Unsuccessful N......Slough 11 I I 9.890 0.29 0.21 189 Unsuccess ful (135.3)II II 6,660 0.45 0.33 313 Successful/Difficult II III 9,890 0.26 0.19 121 Unsuccessful III IV 9,890 0.36 0.26 40 Successful/Difficult IV V 9,890 0.30 0.22 85 Unsuccess ful V \/1 9',890 0.39 0.29 75 Successful/Di.fflcultVVII9,890 0.19 0.11t 62 Unsuccessful Upper Side Channel 11 I ------ 0:23 --- (136.1)II I 10,700 0.32 580 Unsuccessful III II 10,700 0.00 0.00 880 UnSuccessful Slough 19 --J 5,400 0.17 0.12 47 Unsuccessful 1140.0)..II 5,400 0.15 0.11 13 Unsuccess ful III 5,400 0.33 0.24 18 Successful/Difficult IV 5,400 0.12 0.09 121 UnsuccessfulV5,400 0.13 0.09 44 Unsuccessful VI 5.400 0.30 0.22 63 Successful/Difficult VII 5,400 0.12 0.09 66 UnsuccessfulVIII5,400 0.00 0.00 126 Unsuccessful IX 5,400 0.00 0.00 108 Unsuccessful Table 4.(Conti nued I. Phy!!ca!Char~£~~rl~t~s of p.$~~ge Reach Study Site (River Hlle) Panage Reach a 1984 ---'985 Report Addendum Mainstam ;Shallowest Discharge Depth (ft)b (ch)Th.l"eg P.uage lengthC (tt) Passaged Evaluation N 00 Slough 20 (HO.t) Side Channel 21 (140.6) Slough 21 (1'11.8) Slough 22 (1'14.3) I II Iii IV V vi I II ill IV V VI VII VIII IX X III IIR I II III IV I 10.900 0.1i3 0.32 19 II 10.900 0.44 0.32 43_...--.._. ill 10.900 0.30 0.22 20 IV 10.900 0.'12 0.31 '13 V 10.900 0.36 0.26 31 VI 5.1i00 0.00 0.00 383 I 5.600 0.33 0.2'1 55 II 5.600 0.'32 0.23 29.----.----III 5.600 0.36 0.26 63 IV 5,600 0.3'1 0.25 132 V 10,600 0.'11 0.30 62--_._._.-. Vi 7,800 0.'35 0.26 138--...-----VII 7.800 0.25 0.18 800 VIII 5,800 0.25 0.18 50 IX 5,800 0.3'1 0.25 52 i':10.900 0.30 0.22 256 10,900 0.31 0.23 263 Ilil 5,800 0.00 0.00 '160 lilA 5,800 0.00 0.00 24'1., 5,900 0.36 0.26 115------ II 5.900 0;32 0.23 76 III 5.900 0.12 0.09 157 Successful/Difficult Successful/Difficult Successful/Difficult Successful/Difficult Successful/Difficult Uns~ccessful Successful/Difficult Successful/Difficult ·Succe'sful/Dlfflcult Successful/Difficult Successful/Difficult Successful/Difficult Unsuccess fu I Unsuccesaful Successful/Difficult Unsuccessful Unsuccess ful Unsuccess ful Unsuccessful Successful/Difficult Successful/Difficult Unsuccessful a Passage reaches located In left and right channels of site (facing upstreaml are Indicated n "l"and "R".respectively. b Thalweg and passage depth values correspond to the shallowest measurements collected In the field at each passage reach. c Length values correspond to the length of a passage at the specified shallowest depth as measured In the field. d Evaluation of passage based on the revised possage c~lterla for the given set of passage reach conditions. !J J I !)~I I J J 1 j J 1 J """ Table 5.A summary of i ni ti al breaching and controlling mainstem discharges affecting passage reaches within selected study sites in the middle Susitna River. Breaching Analysis a Initial Controllingb Contro11 i ng Di scha rge Passage Breaching Exceedence Frequency Study Site Reaches Discharge Discharge Percent Percent f (River Mile)Affected (cfs)(cfs)Total Tima e Total Years Whiskers Creek Slough I - II 22,000 23,000 16 69 (101.2) Mainstem 2 Side Channel I -IVL 12,000 16,000 45 94 -.(114.4)IVR -VIIIR 23,000 25,000 10 57 I Slough SA I -VIL 27,000 27,000 7 46 (12S.3)VIR -XR 33,000 33,000 2 11 Slough 9 -V 16,000 19,000 29 77 (12S.3) Slough 9A -XI 11,500 13,500c 60 97 (133.2) Side Channel 10 -VI 19,000 19,000 29 77 (133.S) Slough 11 -VII 42,000 42,000 1 9 (135.3) Upper Side Channel 11 -II 13,000 16,000 45 94 ~(136.1) Slough 19 I - V 13,000d 13.000d 63 97 (140.0)VI •IX Upland Upland ~ ..Slough 20 -VI 22,000 23,000 16 69 (140.1) Side Channel 21 I -VII 9,200 12,000 71 97 (140.6)VIII -IX 1S,000 24,000 13 66 Slough 21 I -IIIL 23,000 25,000 10 57 (141.8),IIR 26,000 No Data ~ Slough 22 I •III 20,000 23,000 16 69 (144.3) a Passage reach conditions are considered to be successful under controlling discharge conditions. b Controlling mainstem discharge values where determined by the project hydraulic engineer using available hydraulic data. c This mainstem discharge value is an estimate based on a mean increase of approximately 2,000 cfs over the initial breaching discharge. d Corresponds to breaching of overflow channel #2 (Figure 8-9)located at the mouth of Slough 19. e Percentage of total time for a 35 year flow record that the indicated discharge is equalled or exceeded during the period 20 August -20 September (USeS gage at Cold Creek,gage '15292000). f Percentage of total years for a 35 year flow record that the indicated discharge is equalled or exceeded during the period 20 August -20 September (USeS gage at Cold Creek,gage #15292000). 29 Table 6.Summary of malnstem discharges required to provide successful and unsuccessful salmon passage conditions from backwater effects at selected study sites In the middle Sus ltna Ri ver. Backwater Analyslsa Successful Passage Successful passageb Unsuccessful Succeuful .Exceedenco Froquency Passage Staff Study Site Passare Passa e To~:~c;~~ec Percent IIISEL Gage (River Hile Reach ets cta Total Vears d ft)Used IIIhlskers Croek Slough I e •.---365.54 101.21111 (101.2)II 0 •----366.00 Haln.tem 2 Side Channel I 8,600 9.200 87 97 474.12 114.4\116 (114.4 )II 11,800 12.500 67 97 474.89 114;41116 III 0 •----476.26 IVL ••----476.33 IVR 18,800 19.700 26 77 476.38 114.457 VR e •--..478.09 VIR 0 •---.477 .82 VIIR 8 •--._-478.97 VII IR ••.---479.99 Slough 8A I 7.200 7.700 94 97 561.04 125.351 (125.3)II 1-\.600 16.000 45 94 562.49 125.3\115 III 17.600 19.000 29 77 562.84 125.3\115 IV 23.600 25.000 10 57 563.51 125.3\115 V 0 •----564.00 VIL 0 e ------ W VIR 0 e ----566.74 0 VIIR ••--.-568.84 VIIIR •e -.--570.59 IXR e •--_.572.34 XR e 0 .---574.24 Slough g I 10,900 11,600 74 97 590.04 128.31113 (128.3)II •e ---.592.24 '. III e •--.-592.84 IV e •.---592.84 V 0 e .---593.19 Slough 9A I 10,800 11.500 74 97 560.16 133.251 (133.2)II 0 •----640.90 III e •..--642.22 IV •e ..-.642.79 V ••_..-643.71 VI 0 e --.-645.22 VII 0 •----645.53 VIII e 0 ----646.74 IX 0 0 ----647 .57 X e 0 .---648.29 XI 0 0 ----648.40 q ~1 I ~J J ]J J .~J J .~J B I 1 ]i J }1 •1 1 J J 1 J )i Toblo 6.(ContI nued). Backwater AnalYIlaa Succeaaful Paasage Succenful Pungeb Unluccess tu I Succentul Excoedonce Frequency Passage Statt Study Site Punge Pasngo Percent Percont WSEL Cage (RIver Hltol Reach 'ch)(chI Total Time c Total Yeaud (ft)Used Side Channel 10 I 17 ,700 18,500 31 80 651.13 133.8\115 (133.8)II e e ....652.90 III e'0 _.--653.11 IV 0 0 -.--653.55 V e e ...-653.29 VI 0 0 ...-654.68 S.lough 11 I 15,400 16,500 42 94 668.34 135.3\111 .(135.3)II 16,300 19.400 27 77 668.74 135.3\111 III 32,000 33,400 2 11 670.44 135.3\111 IV 38,800 40,300 1 9 671.19 135.3Wl V 0 0 .---673.59 VI 0 0 ..-.674.74 VII 0 e .--.674.84 W Upper Side Channel II I e 0 ...-680.94 136.2\113.....1136.1).II 0 e ..qO 682.17 Slough 19 I e e ...'718.21 140.045 (140.0)II e e ----718.25 III 0 e .---718.08 IV e e ....719.30 V 0 e _._.719.34 VI 13,000 13,000 63 97 719.21 140.053 vii ''',500 15,300 48 97 719.72 140.053 VIII 18,100 19,000 29 77 720.39 140.0S3 IX 24,800 25,600 B 54 721.49 140.053 Slough 20 I 12,300 13,200 62 97 723.81 140.1W4 (140.1)II 20,000 21,100 22 77 725.01 140.tW4 III 0 0 --.-726.57 IV e e --..727.23 V e e _.--727.64 VI e e --_.728.20 Side Channol 21 I 7,100 7.800 94 97 731.49 140.658 1140.6)II 9,700 10,300 82 97 732.09 140.658 III e e -.--732.84 IV 0 e ----733.81 V e e --.-736.99 737.94 729.89 744.09 744.54 744.29 142.0\115 745.39 748.59 749.49 35 89 780.01 144.357 17 69 780.55 144.3W3 781.37 Table 6.(Continued).. Passageb Unsuccessful Successful Study Site Pusa e Passa~e (River Hlle)Reach cis cta Side Channel 21 (contlrlued)VI e e (140.6)VII e e VIII e e IX e e Slough 21 I e e (141.8)II e e IIiL e •IIIR e e Slough 22 1 16,000 17,800 (144.3)II 21,900 22,700 III e e Back~ater Anelyslsa Succes.~--Passage Successful Exceedence frequency Passage Percent Percent \IISEJ,. Total T1mo c Total Yeaud (ft) Staff Cage Used W N a This analysis assumes that local flows are negligible. b Passage reaches loc~;ted In left and right channels of ,Itu (feeing upstream)are Indicated as "L"and "R",rupectlvely. c Percentage of total time for a 35 year flow record,that the Indicated dl,charge 'a equalled or exceeded during the period 20 Auguat -20 September (USeS gage at Gold Creek,gage 115292000). d Percentage of total years for a 35 year flo"record that the Indicated dl,charge I,equalled or exceeded during the period 20 August -20 September (USGS gage at Gold Creek,gage 115292000). e Influence of back"ater "as not evaluated since breaching occurS at discharge,lo"er than those required for providing back"ater Influence.. J •~t i !J i J J J 'I J J J J MA1NSTEM DISCHARGE THAT WOULD BE EXCEEDED: ---10%OF THE TIME ----50%OF THE TIME ---90%OF THE TIME ----......"-"......""--......"'................_---_.-.....--- -30 0 0 0 )( CI)...u- llJ 20 (!) 0:: <[ :::z: (.) (I)-Q :E 10 laJ.... (I) Z-<[ ~ 0 - - ..... 20 25 30 AUGUST 5 10 15 SEPTEMBER 20 ..... - Figure 9.Daily mainstem discharge exceedence curves for the August 20 to September 20 salmon spawning period in the middle Susitna River under natural flow conditions. Exceedence curves were developed from 35 years of USGS discharge data at Gold Creek (Station No.15292000) using methods described in Chapman (1982). 33 provided in Table 7.These estimates provide an indication of the quantity of local flow required for passage in the absence of the direct effects of mainstem influenced backwater and breaching.The required flows are very approximate,and shoul d only be used to indicate the relative level of p~ssage difficulty between sites. Exceedence frequencies are provided at those sites for which a relation- ship between mainstem discharge and groundwater contributions to local flow have been established.Local flow in sloughs and side channels is comprised mainly of groundwater upwelling (driven largely by mainstem water levels)and runoff from precipitation events.The exceedence values reflect the percent of time that the passage condition is met or exceeded during the period from August 20 to September 20 as a result of precipitation events that generate local flows sufficient to supplement groundwater upwelling flow corresponding to a median mainstem discharge of 15,000 cfs for the period. Since precipitation records illustrate that precipitation occurs only half of the time during this period,exceedence values range from zero to 50 percent.A zero percent frequency means that the amount of precipitation required to produce local flow to supplement groundwater generated flow corresponding to a median mainstem flow for the period is so large that it occurs very infrequently (e.g.1 in 10 years).An intermediate exceedence frequency such as 22 percent indicates that the combination of groundwater generated flow corresponding to a mainstem discharge of 15,000 cfs and runoff from a precipitation event which is equalled or exceeded 22 percent of the time is sufficient to provide the required passage flow.An exceedence of 50 percent or greater indicates that the flow resulting from groundwater upwelling at a median mainstem discharge of 15,000 cfs is sufficient to provide the required flow for passage without precipitation input.The mainstem discharge and associated frequency that would be required for successful and unsuccess- ful passage conditions at passage reaches in Sloughs BA,9,and 11 in the absence of any precipitation input is given in Table B. 34 - ~. - ~, - 1 t -)J J 1 1 )]1 1 ]) ". j Table 7.Summary of local flows required for successful and unsuccessful passage conditions and the frequencies of occurrence based on precipitation and groundwater contributions at median Susftna River discharge of 15,000 cfs during the August 20 to September 20 period. Passage Reach Successful Conditions Unsuccessful Conditions Passage "local Passage local Study Site length Depth Flow (Percent Depth Flow Percent (River Mile)Number (ft)(ft)(cfs)Exceedence (ft)(cfs)Exceedence Whiskers Creek I 34 0.33 14.0 a 0.21 6.0 a (101.2)II 63 0.34 5.0 a 0.22 1.0 a Mainstem II I 32 0.33 1.0 a 0.21 0.5 a (114.4)II 168 0.36 5.0 a 0.24 1.0 a III 209 0.37 13.0 a 0.25 4.0 a IVl 310 0.37 4.0 a 0.25 1.0 a IVR 34 0.33 11.0 a 0.21 3.0 a VR 243 0.37 4.0 a 0.25 2.0 a VIR 84 0.34 2.0 a 0.22 0.8 a VIIR 84 0.34 7.0 a 0.22 3.0 a w VIIIR 318 0.37 2.0 a 0.25 0.7 a 0'1 Slough 8A I 160 0.36 2.0 50 0.24 0.8 50 (125.9)II 229 0.37 5.0 14 0.25 2.0 33 III 27 0.33 4.0 19 0.21 1.0 50 IV 116 0.35 6.0 8 0.22 2.0 31 V 174 0.36 6.0 7 0.24 2.0 30 VIR 26 0.33 3.0 31 0.21 0.6 50 VIIR 213 0.37 7.0 5 0.25 3.0 23 VIIIR 150 0.35 11.0 5 0.23 3.0 20 IXR 136 0.35 4.0 5 0.23 0.8 50 XR 171 0.36 2.0 5 0.24 0.8 16 Slough 9 I 342 0.37 5.0 33 0.25 4.0 50 (128.3)II 340 0.37 6.0 17 0.25 3.0 50 III 421 0.37 5.0 11 0.25 2.0 50 IV 35 0.33 3.0 17 0.21 1.0 50 V 219 0.37 0.9 8 0.25 0.9 37 Slough 9A I 74 0.34 9.0 22 0.22 4.0 50 (133.6)II 15 0.32 3.0 50 0.20 2.0 50 III 78 0.34 4.0 50 0.22 2.0 50 IV 27 0.33 4.0 22 0.21 2.0 50 V 54 0.34 4.0 20 0.22 3.0 50 VI 54 0.34 6.0 5 0.22 3.0 50 VII 19 0.33 4.0 5 0.21 1.0 50 VIII 223 0.37 9.0 5 0.25 3.0 7 Table 7 (Continued). Passa~~~Successful Conditions Unsuccessful Conditions Passage local Passage local Study Site Length Depth Flow Percent Depth Flow Percent (River Hile)Number (ft)(ft)(efs)Exeeedence (ft)(efs)Exceedence Slough 9A (Continued)IX 22 0.33 3.0 5 0.21 0.8 50 X 119 0.35 2.0 8 0.23 0.6 50 XI 203 0.37 9.0 5 0.25 3.0 5 Slough 11 I 189 0.37 4.0 5 0.25 1.0 50 (135.3)1/313 0.37 1.4 SO 0.25 b b III 121 0.35 9.0 5 0.23 3.0 5 IV 40 0.33 3.0 5 0.21 1.0 SO V 85 0.34 3.0 5 0.22 1.0 SO VI 75 0.34 2.0 5 0.22 0.6 SO VII 62 0.34 O.S 5 0.22 0.4 5 Upper Side Channel 11 I 580 0.37 8.0 50 0.25 2.0 50 w (136.1)II 880 0.37 b b 0.25 b bc:n Sough 19 I 47 0.33 b b 0.21 b b (140.0)II 13 0.32 b b 0.20 b b III 18 0.32 b b 0.20 b b IV 121 0.35 b b 0.23 b b V 44 0.33 b b 0.21 b b VI 63 0.34 2.0 a 0.22 0.6 a VII 66 0.34 2.0 a 0.22 0.7 a VIII 126 0.35 2.0 a 0.23 0.9 a IX 108 0.35 4.0 a 0.23 1.0 a Slough 20 I 19 0.32 2.0 a 0.20 0.6 a (140.1 )II 43 0.33 2.0 a 0.21 0.5 a 1/1 20 0.32 3.0 a 0.20 1.0 a IV 43 0.33 b b 0.21 b b V 31 0.33 b b 0.21 b b VI 383 0.37 10.0 a 0.25 4.0 a Side Channel 21 I 55 0.34 5.0 50 0.22 2.0 50 (140.6)II 29 0.33 7.0 SO 0.21 3.0 50 III 63 0.34 7.0 SO 0.22 3.0 50 IV 132 0.35 4.0 24 0.23 1.0 50 V 62 0.34 4.0 21 0.22 1.0 SO VI 138 0.35 17.0 5 0.23 4.0 50 VII 800 0.37 20.0 5 0.25 5.0 SO VIII 50 0.33 7.0 5 0.21 2.0 50 IX 52 0.34 5.0 9 0.22 2.0 SO )§J J J ~J J J 1 I ),~j )! ')] Table 7 (Continued). J 1 1 i J )J --1 -»}-il. J j w...... Passage Reach Successful Conditions Unsuccessful Conditions Passage local Passage local Study Site Length Depth Flow Percent Depth Flow Percent (Rfver Mile)Number (ft)(ft)(cts)Exceedence (ft)(cfs)Exceedence Slough 21 I 256 0.37 4.0 5 0.25 1.0 50 (141.8)II 263 0.37 2.0 50 0.25 0.4 50 IIIR 244 0.37 3.0 5 0.25 0.8 50 IIIL 460 0.37 b 5 0.25 b 5 Slough 22 I 115 0.35 3.0 a 0.23 1.0 a (144.2)II 76 0.34 2.0 a 0.22 0.7 a III 157 0.36 4.0 a 0.24 2.0 a a Frequencies not evaluated. b No cross sectfon data available. • Table 8.Frequencies of occurrence of local flows evaluated through the use of mainstem versus local flow relationships in Sloughs 8A,9 and 11 excluding the effects of breaching and backwater. Required local Flow Required Mainstem Discharge Frequency of Occurrence Passage (cts)(cts)(\) Site Reach Successful Unsuccessful Successful Unsuccessful Successful Unsuccessful Slough 8A I 2.0 0.8 5,500 3,500 100 100 II 5.0 2.0 60,000 25,000 0 10 III 4.0 1.0 60,000 8,500 0 88 IV 6.0 2.0 60,000 25,000 0 10 V 6.0 2.0 60,000 31,500 0 6 VIR 3.0 0.6 17,500 3,500 35 100 VIIR 7.0 3.0 60,000 22,500 0 15 VIIIR 11.0 3.0 60,000 26,000 0 9 IXR 4.0 0.8 60,000 10,000 0 82 XR 2.0 0.4 60,000 13,500 0 60 Slough 9 I 5.0 4.0 27,000 14,500 7 52 w II 6.0 3.0 58,000 8,000 0 90 CXJ III 5.0 2.0 60,000 9,500 0 83 IV 3.0 1.0 51,000 2,500 0 100 V 2.0 0.8 60,000 19,500 0 25 Slough 11 I 4.0 1.0 34,000 7,500 4 93 II 1.4 1.4 10,000 10,000 81 81 III 9.0 3.0 60,000 28,000 0 7 IV 3.0 1.0 44,000 10,500 1 79 V 3.0 1.0 60,000 13,500 0 65 VI 2.0 0.6 60,000 12,000 0 70 VII 0.5 0.4 60,000 48,000 0 0 I I ~,J I J ,J ,-J I J ~))1 l ) - - ..... - - ..... 4.0 DISCUSSION 4.1 Salmon Passage Criteria The analysis of the salmon passage data collected·during the 1984 open water season resulted in revisions of the passage criteria.curves developed from the 1982 and 1983 passage data (Sautner et al.1984). The final product of the analysis was the development of a single set of salmon passage criteria thresholds for establishing successful and unsuccessful salmon passage conditions (Figure 7).In general,the same assumptions corresponding to the original criteria curves in Sautner et al.(1984)are applicable to the revised passage criteria thresholds. However,based on fi e1d observations of sa 1mon passage,one of the important assumpti ons regarding the passage criteria requi red modifi ca- tion.This assumption was originally stated as follows: All passage reaches can be described as either uniform, straight channels with small substrate (less than or equal to 3 inches in diameter),or non-uniform braided channels with large substrate (greater than 3 inches in diameter). Exceptions to this assumption were encountered at several passage reaches (e.g.Sloughs 20 and 21)duri ng the past fi e1d season.Non- uniform channel s were observed at passage reaches with predomi nantly small substrate,and passage reaches with predominantly large substrate and uniform channels were also encountered (Table 3).In these sit- uations it was often very difficult to classify certain passage reaches under one of the original criteria curves.This required that the relative importance of channel configuration and substrate size be re-eva1uated.Based on field observations,differences in channel confi gurati on appeared to have a greater overa 11 i nf1 uence on water depths,and therefore on salmon passage conditions,than substrate size. Therefore,if substrate is disregarded as a factor in the salmon passage criteria analysis,the previous assumption can be rewritten as follows: All passage reaches can be described as either uniform, straight channels,or as non-uniform,braided channels. This assumption indicates that passage reaches can still be classified into two categories which would theoretically require two separate sets of criteria curves as in Sautner et al.(l984).However,when length and depth data for both uniform and non-uniform passage reaches were plotted separately and together,there was no distinct evidence to indicate the requirement of two sets of criteria curves.The combined passage data (collected from both uniform and non-uniform channel s) closely fit Criteria Curve I for uniform channels,whereas Criteria Curve II,for non-uniform channels,overestimates water depths required for successful passage.This was verified in the field when measuring lengths of passage reaches using the Criteria Curve II thalweg water depth of 0.67 feet.Passage reaches for which this depth value was used for establishing the upstream and downstream limits included water depths where fish did not appear to have any passage problems.A thalweg water depth of approximately 0.50 feet,which corresponds to 39 Criteria Curve I,appeared to be a more accurate indicator of the depth of water at which salmon first encounter passage difficulty. Based on these reasons ,and supported wi th fiel d observations,it was determined that only a single set of passage criteria thresholds is necessary to accurately describe natural salmon passage conditions. Hence,the previous assumption was modified to read as follows: All passage reaches influence salmon passage conditions in a similar manner regardless of channel configuration and substrate size. The salmon passage criteria thresholds developed in this addendum are similar to Criteria Curve I from Sautner et ale (1984),with some modi- fications based on the 1984 data.The most significant modification to the passage criteria involved the 0-20 feet range of the curves for both successful and unsucces~ful passage.When the original criteria curves were developed in 1984,the sharp downward inflections in this range of the criteria curves were assumed to refl ect an intuitive idea that salmon are able to swim through very shallow depths for short lengths. This adaptation was based solely on intuition and the professional judgement of several project personnel with various backgrounds. However,the salmon passage data collected during the 1984 field season were not sufficient to support the sharp,downward inflections in the 0-20 feet range of the original curves.General field observations of chum salmon passage also did not support this adaptation in the original curves.In addition,very few passage reaches identified duri ng the 1984 field season had passage reach lengths that fit into the 0-20 feet range of the passage criteria.Thus,the original criteria curves were modified to reflect these field observations and additional data, resulting in the development of two straight lines,referred to as salmon passage criteria thresholds,which more accurately reflect salmon passage conditions. The assumption that salmon are able to swim through shallower depths at shorter reach lengths may be falsely based on the well known ability of salmon to leap over obstacles such as waterfalls.However this ability is only characteristic with the physical and hydraulic features present at waterfalls (eg.,plunge pool depths,water velocities).These conditions are not characteristic of passage reaches in sloughs and side channels of the middle Susitna River and thus there were no observations of salmon IIjumping ll over passage reaches of shorter reach lengths. The salmon passage criteria threshol ds developed in this addendum are represented by two straight lines which best fit the salmon passage data collected during 1984.Placement of the threshold lines for successful and unsucc.essful salmon passage indicates that pas~_~g~_d~p~!.'!-._~PE~~!sto be,tbec.rl:tJc~I physj,calfa ctorafte.<;.~jrJg..pass.age.C;Q,r:lJ:I ition s•Passage reach length is ..not.a'sc:riticalinreJationsince passage depth increase.s only 0.95 fee~Over Jengthstip to 200 feet'. 40 - "'"" - - ""'" 4.2 Passage Evaluations During the 1984 open water field season,85 passage reaches were iden- tified at selected slough and side channel study sites of the middle Susitna River compared'to 74 passage reaches previously identified in Sautner et al.(1984).The difference in the number of passage reaches is primarily related to the specific methods employed to identify passage reaches.In Sautner et al.(1984),passage reaches were identified strictly from surveyed thalweg profiles of each study site. However,the maj ori ty of these tha 1wegs were not surveyed for the purposes of analyzing salmon passage conditions.Thus,certain passage reaches within some study sites were not adequately defined on the thalweg profiles.In contrast,identification of passage reaches during the 1984 PVS were based on actual field observations.This method resulted in the identification of new passage reaches,the elimination of some previously identified passage reaches,and in some cases,the division of a single,previously identified passage reach into two separate passage reaches.In addition,Slough 19 was included as an additional study site to be evaluated for passage.Therefore,the methods employed in this addendum result in a more accurate and complete identification of passage reaches compared to the methods utilized in Sautner et al.(l984). Mainstem discharge estimates resulting from the backwater and breaching analyses were also presented as percent exceedence frequencies based on time and years.Although these percent exceedence values are supposed to represent the entire period of interest,they may contain an inherent bias towards the first two weeks of the August 20 to September 20 salmon spawning period.An evaluation of the daily mainstem discharge exceedence curves for 10%,50%and 90%of the time (Figure 9)indicates that the middle Susitna River discharge generally decreases through the period of interest.It is also apparent that higher discharges occur with greater frequency during the first half of the period of interest. Discharges generally decrease in the latter half of this period.The decreasing trend in mainstem discharge values is generally consistent during the entire period with few periodic spikes or peaks.Although the percent exceedence values presented in this addendum are for the entire August 20 to September 20 period,these values are more likely to occur during the first half of the salmon spawning period rather than the last half because this is the period when the higher discharges can be expected to be equalled or exceeded. 4.2.1 Mainstem Breaching The mainstem Susitna River directly influences salmon passage conditions within a slough or side channel when the head of a site becomes breached.This event is significant,since after mainstem breaching has occurred all the passage reaches within a site are affected in a similar manner.The breaching analysis in this addendum provides a summary of the ma instem di scharges whi ch are requi red to breach sel ected study sites in the middle Susitna River.These results are essentially the same values that were reported in Sautner et al.(1984)with the addi- tion of mainstem discharge estimates for Sloughs 9A and 19.Although 41 two breaching discharges are presented for each study site,controlling discharge values are of primary importance since field observations have shown that successful salmon passage conditions exist at all passage reaches within a site when controlling mainstem breaching has occurred. Initial breaching discharges are only presented to provide an indication of when a study site is initially overtopped by mainstem water and may be considered to approximate the discharge representing the unsuccessful threshold value. A review of the results of the breaching analysis (Table 5)indicates that the majority of study sites breach at relatively high mainstem discharges (19,000 to 42,000 cfs).This includes Sloughs 8A,9,11 and 21,which comprise a major portion of the primary spawning areas for chum salmon in the middle Susitna River.Under natural flow conditions, these relatively high mainstem discharges (19,000 to 42,000 cfs)are equalled or exceeded less than a third (29%-1%,respectively)of the total time for the period August 20 to September 20 (Table 5).These discharge values of 19,000 to 42,000 cfs also correspond to 77%-9%, respectively,of the total number of years in which the breaching discharge is equalled or exceeded at least once during the August 20 to September 20 period.However,the exceedence frequencies for the total number of years contains an inherent bias towards the first two weeks of the period of interest. 4.2.2 Mainstem Backwater In addition to breaching effects,the mainstem Susitna River directly affects salmon passage in the mouth area of a slough or side channel by creating backwater pools.As mainstem discharge increases,the stage of the backwater pool progressively rises and inundates the lower portion of the site.This effect is important in regulating the passage of salmon into a slough or side channel spawning site at mainstem dis- charges less than those required for breaching. The backwater analysis in this addendum presents a summary of the mainstem discharges which provide successful salmon passage conditions from backwater effects at selected study sites in the middle Susitna River.It is evident from the results that,in general,only the initial few passage reaches located in the mouth regions of study sites are inundated by backwater prior to breaching.However,at three sites (Whiskers Creek Slough,Upper Side Channel 11 and Slough 21),the influence of backwater on passage conditions is completely absent prior to breaching.In these cases,the effects of breaching and local flow become increasingly more critical in providing successful passage conditions. A comparison of the results of the backwater analysis in this addendum to the results previously reported in Sautner et ale (1984)is presented in Table 9.It is evident from the comparison that the mainstem dis- charge values for successful passage conditions from both studies are in general agreement.The discharge values established in this addendum constitute a general increase of less than 1,000 cfs over values report- ed in Sautner et ale (1984).However in a few cases (eg.,Passage Reach 42 ~I - - Table 9.Comparison of the results of the backwater analysis presented in this addendum to the results previously reported in Sautner et al •(1984) for sloughs and side channels in the middle Susitna River. ~Mai nstem Oi scharges (cfs) Present Addendum Sautner et al.(1984) Study Site Passage Unsuccessful(River Mile)Reach Unsuccessful Successful Successful Mainstem 2 I 8,600 9,200 a a Side Channel II 11,800 12,500 11,500 12,200 (114.4 )IVR 18,800 19,700 18,400 19,200 Slough 8A I 7,200 7,700 10,600 10,600 (125.3 )II 14,600 16,000 14·,600 15,600 III 17,600 19,000 a a IV 23,600 25,000 a a Slough 9 10,900 11,600 12,200 12,200 (128.3) Slough 9A 10,800 11,500 a a (133.2) Side Channel 10 17,700 18,500 17,400 18,200.-(133.8) Slough 11 I 15,400 16,500 15,200 16,200 (135.3)II 18,300 19,400 a a III 32,000 33,400 31,900 33,200 IV 38,800 40,300 38,300 39,600 Slough 20 I 12,300 13,200 a a (140.1 )I I 20,000 21,100 20,800 22,100 Side Channel 21 I 7,100 7,800 12,000 12,000 (140.6)II 9,700 10,300 b b ..-Slough 22 I 16,000 17,800 23,000 23,000 (144.3)II 21,900 22,700 b b a This site not evaluated.r- b Breaching occurs at mainstem discharges lower than those required for providing backwater influence • .- - 43 I in Slough 8A),values differ more than 1,000 cfs for successful passage.These larger differences are due to better defined rating curves established during the 1984 field season which provide more accurate estimates of mainstem discharge. Overall,discrepancies between the mainstem discharge.values reported in both studies are a reflection of the revised passage criteria thresholds and their application in the backwater analysis.The methods which 'comprise the backwater analysis include the determination of the depth requirements for successful passage for a reach length of zero feet from the revised passage criteria thresholds.In this addendum,a passage depth of 0.32 feet corresponds to the zero reach length for successful salmon passage.In Sautner et al.(1984),the comparative passage depth from Criteria Curve I was 0.26 feet.Although the difference in the passage depth values is only 0.06 feet,it accounts for the general increase in mainstem discharge values reported in this addendum.In general,where discrepancies in the results of both studies occur,it should be noted that the results of this addendum are refinements of those reported earlier and are therefore considered more reliable. 4.2.3 Local Flow Although the local flow analysis has been refined and expanded consider- ably from the analysis presented in Sautner et aL (1984),there is still a great deal of uncertainty associated with the estimated flows. The limited data available for the previous analysis resulted in a few general assumptions.Data were collected during the 1984 open water season to eliminate most of these assumptions and allow a more thorough analysis of the local flow required for passage in sloughs and side channels.The refined analysis improved the accuracy of the flow estimates,but still necessitated detailed assumptions.In addition, neither the groundwater distribution analysis nor the local flow fre- quency analysis were conducted for the passage evaluations presented in Sautner et aL (1984).These additional analyses and refinement of the methods used to eva I uate I oca I flows resul ted in the fo 11 owi ng addi- tional assumptions which are more specific and expanded from the assumptions presented in Sautner et ale (1984). 1.The surveyed cross section is representative of the most difficult passage conditions within the passage reach. 2.Loca I flow in passage reaches is composed of surface water runoff and groundwater contributions from inflow evenly distributed along the channel bed and inflow concentrated at upwelling sites. 3.The local flow distribution analysis evaluates flow at a passage reach which is representative of field conditions. 4.The percent groundwater values are constant at a site for all local flows and mainstem discharges. 44 - ...... - ~- - 5.The groundwater flows can be represented by local flows measured during a period of low rainfall. 6.Antecedent moisture conditions are invariable and have a negligible effect on surface water runoff. 7.The August precipitation duration curve at Talkeetna is applicable to the August 20 to September 20 salmon spawning period. 8.Precipitation at Talkeetna may be adjusted to represent rainfall conditions at sloughs and side channels of the middle river by using precipitation coefficients. 9.Basin areas contributed surface water in accordance with i denti fi ed percent runoff factors.The factors are constant for all rainfall amounts. 10.Manning's Equation is applicable to the low flow and shallow depth conditions at passage reaches. 11.Manning's Equation can be calibrated at a known flow and corresponding water surface elevation;the calibrated equation may be applied to thalweg depths up to one foot. 12.local flow in passage reaches is uniform;for uniform flow, the energy gradi ent is equal to the slope of the water sur- face. 13.The flow characteri sties at a passage reach are governed by the maximum of the upstream and downstream water surface slopes at the cross section. 14.Manning's roughness coefficients are uniformly greater at the shallow depths associated with the passage analysis in compar- ison to the flood flow roughness values found in the 1itera- ture (thow 1959). 15.Flow excluded by flow computations using surveyed cross section data is a constant amount that is underpredicted at all depths. Required local flow values for successful and unsuccessful salmon passage conditions presented in this addendum differ to varying degrees to previous values (Table 10).Variations between the addendum results and previous values may be partially explained by variations in the calibration of Manning's Equation.In Sautner et ale (1984)constant Manning's roughness coefficient was used at all passage reaches.In the addendum,a site-specific Manning's roughness coefficient reflected variations in passage reach substrate and channel uniformity.The energy gradi ent was approx'imated in the previous study from the water surface gradient evaluated over large reaches on the thalweg profile. 45 Table 10.Comparison of the results of the local flow analysis presented in this addendum to the results previously reported in Sautner et al.(1984)for sloughs and side channels in the middle Susitna River. Local Flow (cfs) - Study Site (River Hi 1e) Present Addendum Passage ---------- Reach Unsuccessful Successful Sautner et al.(1984) Unsuccessful Successful Whiskers Creek Slough (101.2) Hainstem 2 Side Channel (114.4) Slough 8A (125.3 ) Slough 9 (128.3) STough 9A (133.2) Slough 11 (135.3) Upper Side Channel 11 (136.1 ) Slough 20 (140.1) Side Channel 21 {140.6} Slough 22 (144.3) VR VIR VIIR VIII R t VIIR IXR XR I II III II I I I VI X XI I IV V II I I I II III IV I III 6.0 2.0 0.8 2.0 0.7 0.8 3.0 0.8 0.8 4.0 3.0 2.0 2.0 2.0 3.0 0.6 3.0 1.0 1.0 1.0 2.0 0.5 1.0 3.0 3.0 1.0 1.0 2.0 46 14.0 4.0 2.0 7.0 2.0 2.0 7.0 4.0 2.0 5.0 6.0 5.0 3.0 4.0 6.0 2.0 9.0 4.0 3.0 3.0 8.0 2.0 3.0 7.0 7.0 4.0 3.0 4.0 8.0 3.0 3.0 3.0 3.0 1.0 3.0 2.0 2.0 1.0 1.0 4.0 1.0 2.0 0.5 0.5 0.5 3.0 3.0 5.0 7.0 3.0 3.0 4.0 2.0 10.0 6.0 1.0 16.0 5.0 5.0 5.0 5.0 2.0 5.0 4.0 4.0 2.0 1.0 6.0 1.0 3.0 1.0 2.0 3.0 4.0 4.0 8.0 12.0 6.0 6.0 8.0 7.0 18.0 11.0 2.0 ..... In the addendum,the water surface gradient was predominantly obtained from fi el d measurements of the water surface upstream and downstream from the cross-section.The cross-section database was previously much sma 11 eri cross-sections were often unavail abl e wi thi n passage reaches and nearby cross-sections were used in the analysis.Cross-section data collected within passage reaches during the 1984 field season enlarged the database and permi tted a more thorough ana lys is of 1oca 1 flows required for passage.Although still approximate,the required flows estimated in this addendum represent an improved estimate of the required local flows for passage. 4.3 Influence of Mainstem Discharge on Local Flow The two principal sources of local flow in sloughs and side channels of the middle Susitna River are surface water runoff and groundwater upwelling.These sources of local flow are influenced by mainstem discharge and by precipitation events.Surface water runoff is a function of precipitation and basin characteristics,and is not influ- enced by fluctuations in mainstem discharge.Since precipitation in any amount falls roughly half of the time during the spawn"ing period, surface runoff is generally periodic during this time.Most drainage areas contributing to sloughs and side channels are quite small and steep;thus surface runoff decreases substantially or stops soon after the precipitation stops.As a result of the intermittent nature of the surface runoff component of local flow,groundwater upwelling plays a major role in sustaining flow in sloughs and side channels during unbreached periods. Groundwater upwelling during the spawning period originates from any of three sources:1)shallow localized infiltration from the mainstem;2) localized infiltration from precipitation events;or 3)regional ground- water transport in the down valley direction (AEIDC 1985).Of these three sources,only the first is directly influenced by short term fluctuations in mainstem stage.This localized source fluctuates rapidly in response to fluctuations in mainstem stage.This direct influence is demonstrated in a set of linear regression equations that relate the apparent groundwater component of slough flow to mainstem stage or mainstem discharge (e.g.,H-E 1984,Beaver 1984,R&M 1984). The most recent version of these equations,developed as a function of mainstem stage (H-E 1985),were used in the frequency of occurrence analysis presented in Appendix A.Such relations have only been developed for Sloughs SA,9 and 11 and cannot be generalized for appli- cation to other sloughs and side channels.A relation has been developed for Slough 21 but is not applicable at mainstem discharges in the range considered in these passage analyses. Another localized and fluctuating component of groundwater upwelling is that generated from precipitation events.This component generally enters from the valley wall side of the slough or side channel and is not all causally related to mainstem discharges.This component of groundwater upwelling is directly related to surface water runoff from precipitation.However,the response of infiltrating precipitation 47 _____0 ••_ would be delayed in comparison with the rapid response of surface water runoff.The influence of this source of groundwater upwelling has not yet been quantified in general terms. The regi ona 1 groundwater transport component of groundwater upwell ing provides the base flow in the slough or side channel.This component may fluctuate slightly on a seasonal time scale,but would remain fairly - constant during the spawning period.The amount of local flow provided by this source depends upon the length and characteristics of the slough channel that intersects this source.Base flows in sloughs and side channels have not been quantified as a separate entity,but are incor- porated in the local flow values resulting from the regression equations discussed above.The base flows are thought to be small in comparison to other groundwater components (H-E 1984). 4.4 Conclusions/Recommendations The mainstem discharge and local flow values presented in this addendum differ in some cases with values previously reported in Sautner et ale (1984).In general,where discrepancies between the results of both studies occur,the results presented in this addendum are considered more re 1i ab 1e since they are based on refi nements of both fi e1d and analytical methods.The critical discharge values which initially provi de successful passage condi ti ons at passge reaches through ei ther backwater,breaching or local flow effects are summarized in Table 11. The evaluation of salmon passage conditions presented in this report is based on the present hydraulic and morphologic characteristics of slough and side channel habitats.An important consideration that should be examined in future application of these data relates to physical changes that may occur within these habitats in the future.Changes in the natural sediment load of the Susitna River may result in aggradation or degradation of the streambed of slough or side channel habitats.Ice conditions may also result in changes in present channel morphology. Any changes in the present channel morphology may result in changes in the mainstem discharge and local flow values required for salmon passage as presented in this report.With these limitations in mind,the following conclusions were derived from this study. 1.All designated passage reaches influence salmon passage conditions in a similar manner regardless of channel config- uration and substrate size. 2.The passage criteria data indicate that two separate sets of criteria curves are not required to describe passage require- ments for chum salmon. 3.The thalweg depth threshold of 0.67 feet from Criteria Curve II is an overestimate of the water depth required for success- ful passage for chum salmon.A thalweg depth of 0.5 feet is a more accurate indicator of the depth at which salmon would first encounter passage difficulty. 48 J i ,l -)·-1 j J 1 ]J --l J Table 11.A summary of discharge values initially providing successful passage conditinos through either backwater,breaching or local flow effects at selected study sites in the middle Susitna River • Passageb •-.a1 nstem Study Site Discharge Source of (River Mfle)Reach (cts)Influence Whiskers Creek Slough e I 23,000 Breaching 16 69 (101.2)II 23,000 Breaching 16 69 Mainstem 2 Side Channel e I 9,200 Backwater 87 97 (114.4)II 12,500 Backwater 67 97 III 16,000 Breaching ItS 94 IVL 16,000 Breaching ItS 94 IVR 19,700 Backwater 26 77 VR 25,000 Breaching 10 57 VIR 25,000 Breaching 10 57 VIIR 25,000 Breaching 10 57 VII IR 25,000 Breaching 10 57 Slough 8A I 5,500 Local Flow 100 100 +'a (125.3)II 16,000 Backwater 45 94 u:>III 19,000 Backwater 29 77 IV 25,000 Backwater 10 57 V 27,000 Breaching 7 46 VIL 27,000 Breaching 7 46 VIR 17,500 Local Flow 35 89 VIIR 33,000 Breaching 2 11 VII IR 33,000 Breaching 2 11 IXR 33,000 Breaching 2 11 XR 33,000 Breaching 2 11 Slough 9 I 11,600 Backwater 74 97 (128.3)II 19,000 Breaching 29 77 III 19,000 Breaching 29 77 IV 19,000 Breaching 29 77 V 19,000 Breaching 29 77 Slough9Ae I 11,500 Backwater 74 97 (133.2)Ii 13,500 Breaching 60 97 II i 13,500 Breaching 60 97 IV 13,500 Breaching 60 97 V 13,500 Breaching 60 97 VI 13,500 Breaching 60 97 VII 13,500 Breaching 60 97 VIII 13,500 Breaching 60 97 IX 13,500 Breaching 60 97 X 13,500 Breaching 60 97 XI 13,500 Breaching 60.97 Table 11 (Continued). Hainstem Discharge Required Passageb ,<,a1nstem Study Site Di$charge Source of (River Hile)Reach (ch)Influence Side Channel 10e I 18,500 Backwater 31 80 (133.8)II 19,000 Breaching 29 77 III 19,000 Breaching 29 77 IV 19,000 Breaching 29 77 V 19,000 Breaching 29 77 VI 19,000 Breaching 29 77 Slough 11 I 16,500 Backwater 42 94 (135.3)II 10,000 Local Flow 82 97 III 33,400 Backwater 2 11 IV 40,300 Backwater 1 9 V 42,000 Breaching 1 9 VI 42,000 Breaching 1 9 VII 42,000 Breaching 1 9 U1 Cl Upper Side Channel 11 8 I 16,000 Breaching 45 94 (136.l)II 16,000 Breaching 45 94 Slough 1g e I 13,000 Breaching 63 97 (140.0)II 13,000 Breaching 63 97 III 13,000 Breaching 63 97 IV 13,000 Breaching 63 97 V 13,000 Breaching 63 97 VI 13,000 Backwater 63 97 VII 15,300 Backwater 48 97 VIII 19,000 Backwater 29 77 IX 25,600 Backwater 8 54 Slough 20e I 13,200 Backwater 62 97 (140.1)II 21,100 Backwater 22 77 III 23,000 Breaching 16 69 IV 23,000 Breaching 16 69 V 23,000 Breaching 16 69 VI 23,000 Breaching 16 69 )~§,,J J )J J J ,I J ))!, -)1 1 1 I -]1 1 J -1 1 l J 1 01 t-> Table 11 (Continued) Study Site (River Mil e) Side Channel 21 e (140.6) Slough 21 e (141.8) Slough 22 e (144.3 ) Mainstem Oischarae Reauired PassagEl b ,-.a1nstem Discharge Source of Reach (cts)Influence I 7,800 Backwater 94 '97 II 10,300 Backwater 82 97 III 12,000 Breaching 71 97 IV 12,000 Breaching 71 97 V 12,000 Breaching 71 97 VI 12,000 Breaching 71 97 VII 12,000 Breaching 71 97 VIII 24,000 Breaching 13 66 IX 24,000 Breaching 13 66 I 25,000 Breaching 10 57 II 25,000 Breaching 10 57 IIll 25,000 Breaching 10 57 IIIR 26,000 Breaching I 17,800 Backwater 35 89 II 22,700 Backwater 17 69 III 23,000 Breaching 16 69 a Mainstem discharge values correspond to the lowest values resulting from a comparfson of backwater,breaching and local flow effects unless otherwise noted. b Passage reaches located in left and right channels of sites (facing upstream)are indicated as "l"and "R",respectively. c Percentage of total time for a 35 year flow record that the indicated discharge is equalled or exceeded during the period 20 August -20 September (USGS gage at Gold Creek,gage '15292000). d Percentage of total years for a 35 year flow record that the fndicated discharge is equalled or exceeded during the period 20 August -20 September (USGS gage at Gold Creek,gage '15292000). e Mainstem discharges related to local flow effects were not defined at this site and thus are not included in this comparison. 4.The revised salmon passage criteria are represented by two straight lines,referred to as threshold limits,which best fit the passage criteria data collected during 1984.The threshold limits represent the criteria for successful and unsuccessful passage of chum salmon in the'middle reach of the Susitna River. 5.The distribution of fish passage field observations in relation to the threshold limits for successful and unsuccess- ful passage of chum salmon support the revision of the origi- nal criteria curves. 6.Field observations and passage data collected during 1984 do not support the downwa rd i nf1 ecti on represented by the fi rst 20 feet of the original criteria curves.Extensions -of straight line threshold criteria for reach lengths greater than 20 feet continued through this 0 to 20 feet range in the revised passage criteria threshold limits. 7.Passage depth appears to be the critical physical factor affecting salmon passage.Based on the threshold limits for successful and unsuccessful passage of chum salmon,the requi red passage depth increases only sl ightly over passage reach 1engths up to 200 feet and is assumed constant for lengths greater than 200 feet. 8.A total of 85 passage reaches were identified at selected slough and side channel study sites of the middle Susitna River based on field observations. 9.Breaching is important in providing successful passage con- ditions,but only at relatively high mainstem discharges at the majority of slough and side channel study sites in the Middle Susitna River. 10.Backwater is a dominant factor in providing successful passage conditions from the mainstem into some slough and side channel sites by inundating the lower most passage reaches in each site. 11.Local flow is influenced largely by mainstem discharge levels and by precipitation events. 12.Local flow is important in providing periodic conditions for successful passage and more frequent conditions for successful passage with difficulty and exposure at those sites infre- quently receiving direct mainstem influence through breaching or backwater. 52 ~, - r ! 5.0 CONTRIBUTORS Aquatic Habitat and Instream Flow Studies (AH)Project Leader Graphics Typing Staff Editors Data Collection Data Analysis Text 53 Christopher Estes Carol Hepler Roxanne Peterson Peggy Skeers Vi ck i McCa 11 Christopher Estes Doug Vincent-Lang Jeff Blakely Christopher Estes Kathy Johnson Fred Metzler Craig Richards Dan Sharp Allen Bingham Jeff Blakely Elizabeth Bradley Glenn Freeman Tim Quane Larry Rundqui st Jeff Blakely Elizabeth Bradley Larry Rundquist Joe Sautner ~ ! .... - i"'" I - 6.0 ACKNOWLEDGEMENTS The authors express their appreciation to the following for their assistance in preparing this report. The other staff of ADF&G Su Hydro Aquatic Studies Program who provided their support to this report. E.W.Trihey,E.W.Trihey and Associates,and S.Bredthauer and R.Butera,R&M Consultants for their consultation regarding various aspects of the hydrologic and hydraulic data analysis. 54 ----------------------- ,.... /7.0 LITERATURE CITED AEIDC.1985.Susitna River Ice Processes:Natural conditions and projected effects of hydroelectric development,draft report,April 5,2 Vol. Alaska Department of Fish and Game.1983a.Synopsis of the 1982 aquatic studies and a(lalysis of fish and habitat relationships (Appendices).Phase II.Prepared for Acres American Inc.,by the Alaska Department of Fish and Game/Susitna Hydro Aquatic Studies Program.Anchorage,AK. •1983b.Aquatic studies procedures manual.Phase II (1982-83). --Subtask 7.10.Alaska Department of Fish and Game Susitna Hydro Aquatic Studies.Anchorage,Alaska. __=.1984.Memorandum from A.E.Bingham to J.Ferguson of Alaska Power Authority.Draft technical memorandum on 1984 salmon passage validation studies.November 30. Barrett,B.M.,F.M.Thompson,and S.N.Wick,editors.1984.Adult anadromous fish investigations:May-October 1983.Alaska Department of Fish and Game Susitna Hydro Aquatic Studies.Report No.1.Prepared for Alaska Power Authority.Anchorage,Alaska. Beaver,D.W.1984.Slough Discharge Regression Relations.Memorandum to E.J.Gemperline,H-E,12 October. Chapman,D.L.1982.Daily flow statistics of Alaskan streams. National Oceanic and Atmospheric Administration Technical Memorandum NWS AR-35.National Weather Service.Anchorage, Alaska. Harza-Ebasco (H-E).1984.Slough geohydrology studies.Volume 9, Appendix VII,Document No.1780.Alaska Power Authority comments on the Federal Energy Regulatory COl11l1ission draft environmental impact statement of May 1984.Prepared for Alaska Power Authority. Anchorage,Alaska. •1985.Prel iminary equations documented in a memorandum from---~Beaver,D.W.to Gemperline,E.J. R&M Consultants.1984.Water balance studies of middle Susitna River sloughs.Draft.Prepared for Harza-Ebasco.Anchorage,Alaska. Quane,T.,P.Morrow,and T.W.Withrow.1984.Chapter 1:Stage and discharge investigations.In Report No.3:Aquatic Habitat and Instream Flow Investigations (May -October 1983),by C.Estes and D.Vincent-Lang,eds.Anchorage,Alaska. 55 Sautner,J.,L.J.Vining,and L.A.Rundquist.1984.An evaluation of passage conditions for adult salmon in sloughs and side channels of the middle Susitna River.Chapter 6 in 1984 Report No.3:Aquatic - Habitat and Instream Flow Investigations (May-October 1983). Estes,C.C.and O.S.Vincent-Lang,eds.Alaska Department of Fish and Game Susitna Hydro Aquatic Studies.Anchorage,Alaska. Scott,W.B.and E.J.Crossman.1973.Freshwater fishes of Canada. Fisheries Research Board of Canada.Bulletin 184.Ottawa. U.S.Geological Survey (USGS).1984.Provisional summary of 1984 water resources data for Alaska. """'I I 56 ,.,.. I - -- 8.0 APPENDICES Appendix A.Supplement to Local Flow Methods A-I Appendix B.Passage Reach Distribution Maps 8-1 Appendix C.Thalweg Profiles of Passage Study Sites C-l Appendix O.Cross Sectional Data 0-1 Appendix E.Stage and Discharge Data E-l 57 - - -- APPENDIX A Supplement to Local Flow Methods A-I -APPENDIX A The general procedure for evaluating the required amount of local flow necessary for successful and unsuccessful passage and the frequency at which these required flows are expected to occur is described in Section 2.3.2.4.This appendix presents detailed methods for evaluating local flow distribution within a site,calibrating Manning's Equation,and evaluating the frequency of occurrence of local flows.All the methods presented are based on a number of assumptions;each analysis has some error associated with it which can compound as results from one analysis are used in another analysis.Consequently,the required flow estimates are very approximate and shoul d only abe used as an index to the 1evel of passage difficulty anticipated at the site. Local Flow Distribution Analysis At passage reaches where flow data were not collected,flows were estimated from flows measured elsewhere within the slough or side channe 1.The general procedure used to estimate the flow at a passage reach involved assigning a percent groundwater flow value to each passage reach relative to total flow at an R&M discharge gage or other reference,such as another passage reach.These percent groundwater flow values were assumed to be constant at all slough and mainstem flows.The flow at a specified passage reach may be estimated by multiplying the percent groundwater flow value at the passage reach by a flow measured elsewhere in the slough or side channel and adjusting this flow for tributary and surface water inflow. The percent groundwater flow values at passage reaches are evaluated through the use of aerial photographs,on-site investigations and flow data measured at slough gages and passage reaches.Groundwater flow at a site is considered to be composed of both inflow evenly distributed along the channel bed and inflow concentrated at upwelling sites visible in aerial photographs or located during site investigations (R&M 1982). Appendix Figure A-I illustrates the general procedure used to estimate the percent groundwater flow values.The upwelling sites were assigned percent groundwater flow values from field experience.At Sloughs 8A, 9,11 and 21,the R&M discharge gage location was designated the 100 percent groundwater flow value.At sloughs and side channels lacking an R&M gage,the most downstream passage reach (Passage Reach I)was designated to be the reference point for 100 percent groundwater flow. The percent groundwater flow value at each passage reach was estimated by summing the percent groundwater flow values from (1)upwelling sites upstream of the passage reach and (2)the channel bed groundwater contribution. Flow data available at various passage reaches on the same date or on a date with a similar mainstem discharge and antecedent precipitation were utilized to verify or adjust the percent groundwater flow values.Local flow data collected during the 1984 open water field season are pre- sented in Appendix E (Appendix Table E2).The R&M discharge gages provided an additional source of flow data for comparison of the percent groundwater flow values.The evaluated percentage values at the passage reaches of the sloughs and side channels considered are presented in Appendix Table A-I. A-2 LOCATE UPWELLING SITES FROM AERIAL PHOTOGRAPHS AND FIELD INVESTIGATIONS "ASSIGN ESTIMATED PERCENT GROUNDWATER INFLOW VALUES TO "UPWELLING SITES (%) + SUM THE %VALUES OF SITES UPSTREAM FROM THE RaM GAGE·(X)x=~% + EVALUATE CHANNEL BED GROUNDWATER CONTRIBUTION AT RaM GAGE·(Y)Y=IOO%-X "EVALUATE CHANNEL BED CONTRIBUTION FACTOR (Z) Z =(Y-:-DISTANCE FROM RaM GAGE*'TO HEAD) + ESTIMATE PERCENT CONTRIBUTION FROM CHANNEL BED AT EACH PASSAGE REACH (PI) PI =(Z K DISTANCE FROM PASSAGE REACH TO HEAD) t SUM THE %VALUES OF UPWELLING SITES UPSTREAM OF EACH PASSAGE REACH (P2 ) "+ EVALUATE THE GROUNDWATER INFLOW AT EACH PASSAGE REACH (PI'"P2 ) t VERIFY OR ADJUST 0/0 VALUES USING DISCHARGE DATA I •AT SLOUGHS AND SIDE CHANNELS WITHOUT R 8:M GAGES, PASSAGE REACH I WAS SUBSTITUTED FOR THE R 8:M GAGE. Appendix Figure A-I.Illustration of the general procedure used in the local flow distribution analysis. A-3 - -Appendix Table A-I.Percent groundwater flow values for sloughs and side channels. ~Percent Groundwater Study Site Passage Reach FJ ow Val ues -Whiskers Creek Slough I 100 II 50 Mainstem 2 Side Channel I 100 II 90 III 80 ~IVL 40 IVR 40 VR 35-VIR 30 VIIR 25 VIIIR 20 ..", Slough 8A I 228 aII71aIII71aIV70aV64 VI 128 VII 113 VIII 104 R&M Gage 100 IX 50 X 20 ,~Slough 9 I 166 II 152 R&M Gage 100 III 97 IV 80 V 30 -Slough 9A I 100 II 79 III 71 IV 62 V 59 VI 54 VII 44 VIII 40 IX 32 X 30 XI 24 A-4 Appendix Table A-I (Continued). }SlIm, Percent Groundwater Study Site Passage Reach Flow Values ~, Slough 11 I 120 ~ II 114 III 102 R&M Gage 100 ,~ IV 78 V 58 VI 40 VII 10 Slough 19 I 100 II 90 ~ III 80 IV 70 V 55 VI 50 VII 20 VIII 15 IX 5 ~; Slough 20 I 100 II 80 III 70 IV 55 V 45 -VI 15 Side Channel 21 b I 252 -II 249 III 243 aIV135 V 133 a VI 214 VII 179 VIII 144 IX 138 Slough 21 I 111 ~ R&M Gage 100 i II 93 IIIR 36 ~ lIIL 26 ~, A-S Appendix Table A-I (Continued). Study Site Slough 22 Passage Reach I II III Percent Groundwater Flow Values 100 55 35 - a Passage reach is in one channel of a multi-channel reach of the study site. b Percentages are referenced from the R&M gage located in Slough 21. Calibration of Manning's Equation The Manning Equation is assumed to be applicable to the low flow and shallow depth conditions in the passage reaches.The Manning Equation is an empirical relationship between channel flow (Q)and channel geometry: Q =1.486/n AR 2/3S1/2 The energy gradient (S)is assumed to be represented by the water surface slope at the cross section~and the steeper of the upstream and downstream slopes is assumed to govern the passage reach flow charac- teristics.The channel hydraulic radius (R)and area (A)are calculated from the surveyed cross section.Manning's roughness coefficient (n)is assumed to be primarily a function of bed material size and channel uniformity.For application to the passage reaches,the roughness coefficient values are assumed to be uniformly greater at the shallow depths associated with the passage analysis in comparison to the normal and flood flow roughness coefficient values found in the literature (e.g.Chow 1959).The steps used to calibrate the Manning Equation at each passage reach are summarized below: 1.Obtain a surveyed cross section at the passage reach. 2.Measure the water surface elevation and collect corresponding local flow data. 3.Classify substrate and channel uniformity to evaluate the applicable range of roughness values (Appendix Table A-2). 4.Obtain the reach energy gradient from on-site water surface measurements or from thalweg water surface profiles (Quane et ale 1984). 5.Calibrate Manning's Equation by adjusting the roughness and gradient values. The roughness coefficient and gradient values were adjusted during equation calibration to reflect site conditions,as represented by the measured water surface elevation and the local flow evaluated in the Local Flow Distribution analysis.The roughness coefficient value for a passage reach was varied within the appropriate range until the flow calculated with the Manning Equation approximated the measured flow. For passage reaches where the variations in roughness coefficient values did not yield an appropriate flow,the gradient values were adjusted. The average of minimum water surface slope was selected to represent the energy gradient if slopes from adjacent passage reaches were similar to the modified value.Alternatively,the slope of the reach was calcu- lated from the thalweg water surface profile.(Quane et al.1984)and used when calculated and measured flow compared well. At the few passage reaches lacking surveyed water surface elevations, Manning1s Equation was calibrated by comparison with calibrated A-1- ~, - ..... Appendix Table A-2.Ranges of Manning's roughness coefficients as a function of substrate size and channel uniformity. Substrate Material Manning's Roughness Coefficient Uniform Non-uniform Channel Channel (u)(nu) .- - - Sand/Sil t (A) Sand/Silt and Gravel/Rubble/Cobble (B) Rubble/Cobble/Boulder (e) A-a Au 0.03 -0.07 Bu 0.05 -0.10 Cu 0.06 -0.12 Anu 0.05 -0.09 Bnu 0.07 -0.12 Cnu 0.08 -0.14 ! ! equations from adjacent and similar passage reaches.The passage reach energy gradient,substrate size and channel uniformity were used as indices or similarity. At passage reaches with a wide,rocky,non-uniform cross section,a potentially significant proportion of local flow at the passage reach may be excl uded by the flow computations using the surveyed cross section data.An example of such a cross section is Passage Reach I at Slough 9A (Appendix Figure 0-22).Following the calibration of the Manning Equation with roughness coefficient and gradient values within reasonable limits,the Manning Equation at such sites calculated less flow at a passage reach than the estimated flow.The calculated flow was then subtracted from the measured flow to estimate the amount of passage reach flow that was excluded using the surveyed cross section. The excluded flow passes amongst the rocks in voids which are not surveyed using normal surveying techniques.The excluded flow was assumed to be a constant amount that woul d be underpredi cted by the calibrated Manning Equation for all depths in the range considered for this study.To evaluate the total passage reach flow,the excluded flow was added to the flow calculated using the Manning Equation.Appendix Table A-3 lists the values selected for calibration and the excluded flow at affected passage reaches. Frequency of Occurrence Analysis The frequency of occurrence of 1oca 1 flows at passage reaches may be evaluated through the analysis of the flow contributions from ground- water and precipitation runoff.Appendix Table A-4 presents the local flows and thei r correspondi ng frequenci es of occurrence.The general approach used to evaluate the frequency of occurrence corresponding to a specified local flow is described below: 1.Calculate the base flow for the period from August 20 to September 20 at the R&M gage using the mainstem versus slough discharge relationship.If a relationship has not been evaluated at the site,assume a base flow at Passage Reach I from the local flow data collected at known mainstem flows. 2.Evaluate the base flow at each passage reach by multiplying the base flow from Step 1 by the percent groundwater flow value obtained through the Local Flow Distribution analysis. 3.Evaluate the required surface water by subtracting the base flow from the estimated local flow required for successful passage. 4.Cal cul ate the basin area upstream of the passage reach con- tributing surface runoff. 5.Calculate the precipitation necessary to yield the required surface water. A-9 - ""'"I 1 )t I 1 ))1 )1 J J )}J Appendix Table A-3.Values of Manning's roughnesa coefficient,energy gradient,and excluded flow for calibration of Manning's equation. Substrate and Manning's Excluded Passage Channel Unifo,mity Rou~hness Energy Flow Study Site Reach Category Coef icient Gradient (cfs) Whiskers Creek Slough I Bnu 0.11 0.00893 5.0 II Cu 0.06 0.00937 0.5. Mainstem 2 Side Channel I Bnu 0.12 0.00395 0 II Bnu 0.11 0.00615 .0 III Cnu 0.13 0.01342 0 IVL Cnu 0.13 0.00235 0 IVR Cnu 0.13 0.02445 0 VR Cnu 0.13 0.02350 0 VIR Cu 0.08 0.00167 b 0 VIIR Cnu 0.13 0.00574 0 VIIIR Bnu 0.11 0.00574 0 Slough 8A I Bnu 0.11 0.0015c 0 )=0 II Bu 0.08 0.0331 b 0IIIIBnu0.09 0I-'0.0331 0 IV Bu 0.08 0.00742 b 0 V Bu 0.08 0.00742 0 VI Cnu 0.12 0.0725 0 VII Cu 0.10 0.01179 0 VIII Bnu 0.09 0.0106 0.4 IX Cnu 0.12 0.0075 0.4 X Cnu 0.13 0.01826 0 Slough 9 .I Anu 0.05 0.00123 3.6 II Bnu 0.08 0.0107 0.8 III Bnu 0.09 0.000595 0.6 IV Bnu 0.09 0.00053b d 0.5 . V Bnu 0.08 0.00053 '0. Slough 9A I Cnu 0.11 0.00403 b 3.0 II Bnu 0.08 0.00403 1.9 III Bu 0.07 0.0188 0 IV Bu 0.07 0.0089 0.9 V Cnu 0.11 0.01818 0 VI Bnu 0.08 0.02286 2.3 VII Bnu 0.08 0.0118 0 VIII Cnu 0.14 0.00956 0 IX Cnu 0.11 0.0153 d 0 X Cnu 0.13 0.0056 1.1 XI Bnu 0.08 0.01071 0 Appendix Table A-3 (Contfnued). Substrate and Mannfng's Excluded Passage Channel UnffoGmfty Roughness Energy Flow Study Site Reach Category Coefficfent Gradfent (cfs) Slough 11 I Cnu 0.12 0.00783e 0.7 II Bu 0.07 0.0064 0.4 III Bnu 0.08 0.0080 0 IV Cnu 0.11 0.01 e 0 V Cnu 0.10 0.00171 d 0 VI Cnu 0,12 0.00913d 0 VII Cnu 0.11 0,00073 0.4 Upper Side Channel 11 I Cnu 0.11 0.0099 0.4 II Cnu 0.11 0.0177 0 Slough 19 I Bu f f f II Bu f f f III Bnu f f f IV Bnu f f f 3JIlo V Bnu f f f m VI Au 0.05 0.00778 b 0......VII Bu 0.06 0.00778 0 ~'VIII Au 0.05 0.00380 0 IX Bu 0.06 0.02 0 Slough 20 I Cnu 0.14 0.0741~0 II Bnu 0.11 0.0026 0 III Bnu 0.11 0.0026c 0 IV Bnu f f f V Bnu f f f VI Bnu 0.11 0.016c 0 Side Channel 21 I Bnu 0.08 0.009b 0 II Bnu 0.07 0.015b 0.8 III Bnu 0.07 0.015 1.2 IV Cnu 0.13 0.01519b 0 V Cnu 0.13 0.015A9 0 VI Bnu 0.08 0.015 b 1.2 VII Bnu 0.08 0.015 0.8 VIII Bnu 0.07 0.02 0.8 IX Bnu 0.07 0.00902 0.8 j I J J _t J )1 B t J J_J ~t )1 1 1 1 )1 1 )B 1 j )1 ))~J -1 1 Appendix Table A-3 (Continued). Study Site Slough 21 Slough 22 Substrate and Manning's Excluded Passge Channel Unifo,mity Roughness Energy Flow Reach Category Coefficient Gradient (cts) I Anu 0.01 0.00193 0 II Bu 0.06 0.00453 0 f1IR Cnu 0.10 0.00602 0 IIIL Cnu 0.10 0.00602 0 I Cnu 0.13 0.02269 1.0 II Cnu 0.13 0.00833 0.5 III Cnu 0.13 0.01642 0.5 »•t-t' 1»1-- a Substrate and channel uniformity categories are taken from Table 3 in Section 2.3.2.4. b Gradient from adjacent passage reach gradients. c Gradient from entire thalweg reach. d Average of .upstream and downstream gradient. e Minimum of upstream and downstream gradient. f No cross section data available. Appendl.lable ,1,-_.Frequency of occurrenCe of locol flow~for ~ucce~.ful IS)end un~ucCes~ful (US)posooge for 0 baseflow corrospodlng to 15,000 cf.Suoitno River discharge ot Cold Creek ond Including precipitation value.from Augu~t 20 to Septeb~er 20. Required RequIred Required Required Site Talkeetna Bue Flow local flowv Surface Woter Preclpltotlon Precipitation Percent Dutna (ds)(ch)(cta)(In)(In)E.ceedence Posnge Percent ot Precipitation Study Site Reoch Area Runoff 15,000 cfs S US S US S U Coeff I cl ent S US 5 US Slough 8,1,I 2.21 65 _.6 2.D 0.8 0.0 0.0 0 0 1.30 0 0 >SO ::0 50 II 1.91 65 1.~5.0 2.0 3.6 0.6 0.205 0.03_1.30 0.151 0.026 22 38 III 1.88 65 1.4 ••0 1.0 2.6 0.0 0.153 0 1.10 0.118 0 2_>50 IV 1.79 65 1.~6.0 2.0 ••6 0.6 0.298 0.039 1.30 0.229 0.030 16 31 V 1.1_65 1.3 6.0 2.0 ~.7 0.7 0.322 0.0118 1.30 0.2_8 0.031 15 35 VI 1.45 65 2.6 3.0 0.6 0.4 0.0 0.042 0 1.30 0.032 0 36 >50 VII 1.11 65 2.3 1.0 3.0 ~.1 0.7 0.665 0.099 1.30 0.511 0.076 1 28 VIII 1.28 65 2.1 11.0 3.0 8.9 0.9 1.359 0.137 1.30 1.045 0.105 2 25 IX 1.01 10 1.0 4.0 0.8 3.0 0.0 1.0_3 0 1.30 0.802 0 4 >50 X 0.81 10 0.8 2.0 0 ••1.6 0.4 0.135 0.183 1,30 0.565 0.141 6 22 );:.Slough 9 I 2.89 65 4.0 5.0 4.0 1.0 0.0 0.036 0 1.20 0.030 0 37 ::0 50 II 2.04 65 3.6 6.0 3.0 2.4 0.0 0.182 0 1.20 0.152 0 22 >50 I I III 1.83 65 1.3 5.0 2.0 2.7 0.0 0.28_0 1.20 0.231 0 16 >50 !l-I-"IV 1.62 65 1.9 3.0 1.0 1.1 0.0 0.189 0 1.20 0.151 0 21 >50 W'V 1.52 10 0.7 2.0 0.8 1.3 0.1 0.318 0.024 1.20 0.265 0.020 14 40 Slough 9,1,I 2.21 _0 5.7 9.0 _.0 3.3 0.0 0.135 0 1.10 0.123 0 24 >50 II 2.21 _0 4.5 3.0 2.0 0,0 0.0 0.0 0 1,10 0 0 >50 ::0 SO III 2.27 _0 4.0 4.0 2.0 0.0 0.0 0.0 0 1.10 0 0 >50 ::0 SO IV .35 _0 3.5 4.0 2.0 0.5 0.0 0.113 0 1.10 C.121 0 24 ::0 SO V .35 _0 3._4.0 3.0 0,6 0.0 0.159 0 1.10 0.144 0 22 ::0 50 VI .35 40 3.1 6.0 1.0 2.9 0.0 0.770 0 1.10 0.700 0 <4 >50 VII .21 40 2.5 4.0 1.0 1,5 0.0 0.664 0 1.10 0.6011 0 <6 >50 VIII .17 40 2.3 9.0 3.0 6,7 0.7 3.664 0.383 1,10 3.330 0.348 0 11 IX .10 40 1.8 3.0 0.8 1,2 0.0 1.116 0 1.10 1,014 0 <2 >50 X .08 40 1.7 2.0 0.6 0,1 0.0 0.3_9 0 1.10 0.317 0 13 >SO XI .02 40 1,_9.0 3.0 7.6 1.6 35.331 7.438 1,10 32.119 6.162 0 0 Slough 11 I 0 10 2.2 _.0 1.0 1,8 0.0 d d 1.07 d d <5 ::0 50 II 0 10 2.1 1.4 1.4 0.0 b d d 1.07 d d >50 ::0 50 III 0 10 1.8 9.0.3.0 7.2 1.2 d d 1.07 d d <5 <5 IV 0 10 1,4 3.0 1.0 1.6 0.0 d d 1.07 d d <5 >50 V 0 10 1.0 3.0 1.0 2.0 0.0 d d 1.07 d d <5 ::0 50 VI 0 10 0.7 2.0 0.6 1.3 0.0 d d 1.07 d d <5 >50 VII 0 10 0.2 0.5 0.4 0.3 0.2 d d 1.07 d d <5 <5 J J J .'~j I J .1 1 J D J J )J J ,5 j J 1 1 1 1 )l j j I J -J J j I l Appendix Table A-4 (ContInued). Required Required RequIred RequIred Site Telkeetna Base Flow local Flllw Surface Water Precipitation Precipitation Percent (ch)(ch)(ch)(I n)(In)bceedence Panage BUlna Percent at PrecIpitation Study Site Reach Area Runoff 15,000 ctl S US 5 US S U Coefficient S US S US Upper Side Channel 11 I 0 10 8.0c 8 2.0 0 0 d d 1.07 d d >50 >50 II 0 10 6.0c b b b b d d 1.07 d d e e Side Channel 21 I 5.03 65 7.6 5 2.0 0 0 0 0 1007 0 0 >50 >50 II 5.01 65 7.5 7 3.0 0 0 0 0 1.07 0 0 >50 >50 .11 5.03 65 7.3 7 3.0 0 0 0 0 1.07 0 0 >50 >50 IV 0.84 ItO 3.3 •1.0 0.7 0 0.122 0 1.07 0.122 0 24 >50 V 0.70 itO 3.3 "1.0 0.7 0 0.166 0 1.07 0.166 0 21 >50 VI 0.66 40 6.It 17 It.O 10.6 0 2.796 0 1.07 2.796 0 <5 >SO:J>VII 0.61t ItO 5.It 20 5.0 1/0.6 0 It.082 0 1.07 It.082 0 0 >50 I VIII 0.61 ItO 4.3 7 2.0 3.7 0 0.830 0 1.07 0.830 0 0 >50.....IX 0.53 40 ••1 5 2.0 0.9 0 0.376 0 1.07 Q.376 0 3 >50 .f:oo Slough 21 I O.ltl 10 3.3 It 1.0 0.7 0 0.635 0 1.07 0.635 0 <5 >50 II 0.32 10 2.8 2 O.It 0 0 0 0 1.07 0 0 >50 :>50 IIll 0.16 10 0.8 3 0.8 2.2 0 5.114 0 1.07 5.11'.0 5 >50 IIIR 0.16 10 1.1 b b d d d d 1.07 d d e e a Basin area evaluated from topograp~lc maps from the United States Geological Survey (Scale 1;63,3601.Talkeetna Hts e-6,0-1 and 0-6. b Cross section data not collected In fleldJ required local flow cannot be evaluated. c local flow estimated from field observations. d Precipitation does not yield a surface water contribution to local flow as no tributaries are located upstream of the passage reech and runoff Infiltrates alluvium soil. e Exceedence frequencies cannot be evaluated as local flo.data are not available. i i 6.Use the Precipitation Duration Curve at Talkeetna for August (Appendix Figure A-2)and adjust the daily precipitation by the coefficients listed in Appendix Table A-5 to obtain the frequency of occurrence. 7.Repeat steps 3 through 6 using the local flow estimated for unsuccessful passage. Base flows from groundwater contributions in the sloughs and side channels were evaluated at the average mainstem discharge during the period from August 20 to September 20.The average Susitna River discharge at Gold Creek for this period was estimated to be 15,000 cfs detennined from the flow duration curve developed in Sautner et al. (1984).The slough versus mainstem stage relationships used to evaluate the base flows at Sloughs 8A,9,and 11 (H-E 1985)are listed below: 08A =-368.211 +0.6356 Wsal at RM 127.1 09 =-171.8788 +0.28892 w at RM 129.3 011 =-335.39272 +0.49209 *~~l at RM 136.68. Rating curves were used to estimate mainstem discharges at Gold Creek from water surface elevations at specific river miles (R&M 1985).At sloughs and side channels where local flow versus mainstem stage rela- tionships have not been evaluated,base flows corresponding to a 15,000 cfs mainstem discharge at Gold Creek were estimated from local flow data.Slough flows,measured on dates when the mainstem discharge was 15,000 cfs,provided an estimate of base flows.Alternatively,local flows measured at the same site on different days were plotted and extrapo1 ated to yiel d a base flow for a mainstem di scharge of 15,000 cfs.Data collected during periods of high precipitation were excluded. Appendix Table A-6 lists the base flows evaluated at specific sites. Precipitation events were assumed to contribute rainfall for 24 hours to pennit comparison with the August Precipitation Duration Curve (R&M 1984a).The Precipitation Duration Curve (Appendix Figure A-2)was developed from daily precipitation records from 1972 to 1981.The August Precipitation Duration Curve was assumed to be applicable to the August 20 to September 20 period as the rainfall records for August and September appeared similar when compared.Talkeetna records were adjusted using precipitation coefficients for transfer of recorded data (R&M 1984b). Antecedent moisture conditions were assumed invariable and a constant surface water runoff to precipitation percentage was selected for each passage reach.Variations in soil moisture prior to rainfall events may affect the amount of precipitation which becomes surface water runoff; in the precipitation frequency analysis,these variations were assumed negligible.For Sloughs 8A,9,11 and 21,the runoff to precipitation percentages reflected known topographic and soil conditions and were selected from runoff coefficients presented in the R&M Consultants Water Balance report (R&M 1984b).Sloughs and side channels with primarily alluvial soil watersheds were assigned a runoff coefficient of 10 A-15 - .- ...... - 3.0 - PREC I PITA T ION EXCEEDENCE CURVE 2.0 -TALKEETNA,ALASKA I AUGUST,1972-81\, \ 1.0 -, .9 -, .8 -\ :7 -\ .6 -\ \ .r)-\ \ .4 -\ \ .3 -\ en \au %\uz \.2 -\z \0 ~\ ~\ ~\ u \ au .1 -\II: ~.09-\ .08-\' .07-\ \ .06-\ .De-\ \ .04-\ \ .03-\ \ \ .02-\ \ \ \ \ \ .01 \ I I I I I I I I I 160010203040'0 60 70 80 90 %OF DAYS PRECIPITATION EQUALLED OR EXCEEDED Appendix Figure A-2.August Precipitation Duration Curve for the period 1972-1981 at the Talkeetna Weather Station (Adapted from H-E 1984). A-16 !I, Appendix Table A-5.Precipitation coefficients for determining preclpl- tation values at selected sloughs using precipi- tation values recorded at the Talkeetna weather station (derived from R&M 1984).. Precipiationa Study Site River Mile Coefficient Slough SA 125.3 1.3 Slough 9 128 ..3 1.2 Slough 9A 133.2 1.1 Slough 11 135.3 1.07 Slough 21 141.8 1.0 a To obtain precipitation estimates for above sloughs,multiply precipi- tation at Talkeetna by the appropriate coefficient. A';'17 - - Appendix Table A-6.Base flows for a mainstem discharge at Gold Creek of 15,000 cfs. Local Flow Location of Study Site (cfs)Local Flow Evaluation Slough 8A 2.0 R&M Gage ,-Slough 9 2.4 R&M Gage Slough 9A 5.7 PRI Slough 11 1.8 R&M Gage Side Channel and-Slough 21 3.5 R&M Gage A-18 percent.Steep slopes in the watershed would increase runoff;a runoff coefficient of 65 percent would be used in the precipitation analysis. For sloughs and side channel s wi th,watersheds encompassi ng both steep side slopes and alluvial materials,a runoff coefficient of 40 percent was selected.Appendix Table A-4 lists the runoff coefficients used at each site. A-19 - LITERATURE CITED Chow,V.T.1959.Open-channel hydraulics.McGraw Hill,New York,New York.680 p. Harza-Ebasco (H-E).1984.Slough geohydrology studies.Volume 9, Appendix VII,Document No.1780.Alaska Power Authority Comments on the Federal Energy Regulatory COl1111ission draft environmental impact statement of May 1984.Prepared for Alaska Power Authority. Anchorage,Alaska. •1985.Prel iminary equations documented in a memorandum from--,Beaver,D.W.to Gemperline,.E.J. Quane,T.,P.Morrow,and T.W.Withrow.1984.Chapter 1:Stage and discharge investigations.In Report No.3:Aquatic Habitat and Instream Flow Investigations (May -October 1983),by C.Estes and D.Vincent-Lang,eds.Anchorage,Alaska. R&M Consultants,Inc.(R&M).1982.Slough hydrology interim report. Prepared for Acres American.Anchorage,Alaska. •1983.Water surface --'Exhibits 43,48,and 59. Alaska. profiles and discharge measurements. Prepared for Harza-Ebasco.Anchorage, •1984a.R&M memorandum report on local runoff into sloughs. --.....Prepared for Harza-Ebasco.Anchorage,Alaska. •1984b.Water balance studies of middle Susitna River sloughs. ------Draft.Prepared for Harza-Ebasco.Anchorage,Alaska. Sautner,J.,L.J.Vining,and L.A.Rundquist.1984.An evaluation of passage conditions for adult salmon in sloughs and side channels of the middle Susitna River.Chapter 6 in 1984 Report No.3:Aquatic Habitat and Instream Flow Investigations (May-October 1983). Estes,C.C.and D.S.Vincent-Lang,eds.Alaska Department of Fish and Game Susitna Hydro Aquatic Studies.Anchorage,Alaska. A-20 r -i It Passage Reach Distribution Maps 8-1 !""'" -. -- APPENDIX B:PASSAGE REACH DISTRIBUTION MAPS The maps compiled in this appendix show the locations of passage reaches at selected slough and side channel study sites of the middle Susitna River identified during the 1984 open water season (Appendix Figures 8-1 to 8-13).These maps have been revised from those appearing in Sautner et al.(1984)to show the wetted area of each site at unbreached flows. Locations of staff gages established in 1984 are designated on the appropriate site maps.These maps were derived from aerial photos of the middle Susitna River. B-2 tD I W $101.2 SIJSlrtlA ~ fll"Efl -- WHISKERS CREEK SLOUGH -PR PASSAGE REACH WATER'S EDGE - - -DEWATERED CHANNEL ED RIVER MILE o 250 •I FEET CAppro •.Scale) Appendix Figure 8-1.Locations of passage reaches at Whiskers Creek Slough during the 1984 open water season. J ]J ,~J I J ))])J ~J J J • ]i )1 ]1 j j 1 "))1 1 -----PR PASSAGE REACH WATER'S EDGE - - -DEWATEREO'CHANNEL •1984 STAFF GAGE (114.481 ) $RIVER MILE o 500 I I FEET (Approlt.Scole) OJ I -I=a /'~SUSlrNA .~ RIVER ___ ••-·.-~'-:fT·';."'-"ii.l••••~...f. MAINSTEM 2 SlOE CHANNEL ~. Appendix Figure B-2.Locations of passage reaches at Mainstem 2 Side Channel during the 1984 open water season.' 126$"" . t SLOUGH SA (LOWER) -PR PASSAGE REACH ---WATER'S EDGE - - -DEWATERED CHANNEL •1984 STAFF GAGE (125.3S I) ED RIVER MILE o 500 I ! FEET (Approll.Scale) Appendix Figure B-3.Locations of passage reaches at Slough 8A (lower)during the 1984 open water season. 8-5 -----PR PASSAGE REACH ---WATER'S EDGE ---DEWATERED CHANNEL ED RIVER MILE o SOO I I FEET (Apprall.Scale) RIVER of. .'-- ~~~,.'9(~..1 ...·.......~.,~...........~.,•'••~'",...;.1;0001 ~.-V-n.--~-~~i:M""'l""....lSI~r'...~....~~.~'..,..~~....~~I ••••-V';'~~--=.....Pf ~"~""""0~PR :XR"~.~Ii '\~~~~f 0~.~#' t~ - Appendix Figure 8-4.Locations of passage reaches at Slough SA (upper)during the 1984 open water season. 8-6 7'.'~.tIt.""...."'•.....~.". -PR PASSAGE REACH ---WATER'S EDGE - - -DEWATERED CHANNEL ...984 STAFF GAGE (128.354) ED RIVER MILE o 500 I • FEET (Approl.Scole) -.r:.~.•"r\'"~.-.-:.~....:r:...•.".fr.'-.,:";':::!-.."':.-t:::'i'''f'I$,..T-F.••.,1.,":;i r. ../,..~,~~.&;1" :'://i,',;;Ii' .?LP...{.;. \jI .1;'......;?~~:... •~./'-A 41'••."I"!.'t.•,~A."':l'~'Y 9 ~,!," /:s''~e::>"/,fI" .1 110 \: .:"5'0.~{:~~4!~l}1f',~.'.rlC•.,.'(i'i''?'""~~'::)It ..~~:"~.,...,,.1 ~~X ~"Ift:'"....~".':~(!-:..f; :1 i.~.,.~"..";l;....tj!!".~l "I~~\:4:~..:,PR:':"I SLOUGH 9..,~.,J)~'t;,.."....~.:~~.":PR lll'~ ,Iii~.,.:;':::1~'(~{~;~9 fl ':'ill~lJ (So' ~~ OJ I....... Appendix Figure B-5.Locations of passage reaches at Slough 9 during the 1984 open water season. !,J j J J 'I J 1 .J I J 1 )I J 1 1 J J 1 --j 1 ]1 1 J 1 1 J )1 1 1 SLOUGH 9A -PR PASSAGE REACH WATER'S EDGE - - -DEWATERED CHANNEL •1984 STAFF GAGE (133,251) ED RIVER MILE o 500 I 1 FEET (Approll.Scali) ............~ ,.~...---.rolo",,:,\,..... RIVER ALASKA RAILROAD -...-# ,""'W#.....,:'..~'I:"'~1•••-.w..._~ I·:.(J~ :l J/fit("... J.0'_~;§i~,~..,y " '1 /"'~'.' ":(l.-:...,•.•;i " .....:;;W.#:V' OJ I (Xl Appendix Figure 8-6.Locations of passage reaches at Slough 9A during the 1984 open water season. to ."'D .....'J::.";':-'.' -I·" ··._....9 ..~_.__• plnll ~~''Ie;\.,~~.T."l!":'tIV~.,~~rJ ....~......1ft.) 't:~"'~''''..::a:.:iI.~~\r~'~ A(SUSlrNA RIVER SIDE CHANNEL 10 $134 ,,'';~~~~~''lR.]t"r::m~~i~~·Jr:;·r':''..ml;'l'T:i1!l~'''''''-~...-oJ ...Ji,J.:t...a.u .nt.i ....i !,.t..q ,~ ------PR PASSAGE REACH WATER'S EDGE - - -DEWATERED CHANNEL $RIVER MILE o 250 I I FEET (Approk,Scali) Appendix Figure 8-7.Locations of passage reaches at Side Channel 10 as identified by the thalweg profile. I I ~J !J )I I J ,~J -~I -~J I 1 ))))J J 1 J )I .'", SLOUGH II a UPPER SIDE CHANNEL II RIVER ---- ,~~"'. •17lZ:~.F;~J~'..,t£~;d;1.i '~~"1!l~n"t!It:~~:. •.•~~:.""J':'... ~SUSlrNA OJ I....o ------PR PASSAGE REACH ----WATER'S EDGE --,-DEWATERED CHANNEL ED RIVER MILE o ~OO I I FEET (Appro •.Scale) Appendix Figure 8-8,Locations of passage reaches at Slough 11 and Upper Side Channel 11 during the 1984 open water season. SLOUGH 19 140$ -PR PASSAGE REACH ---WATER'S EDGE - - -DEWATERED CHANNEL $RIVER MILE o 250 I I FEET (Approlt.Scola) R,,,~R~ ..___SlJS'f NA #1 03 I ~ ~ Appendix Figure 8-9.Locations of passage reaches at Slough 19 during the 1984 open water season. I )I J )J 1 1 t i ~J J J 1 !J J J -1 l J ]J )J ~J }]J ) OJ I.....1',) ~~~\~ ~~~ 'J\/?~ / PRDr WOlerfol/ Creek ~ SLOUGH 20 ---PR PASSAGE REACH -WATER'S EDGE ---,.DEWATERED CHANNEL ED RIVER MILE o 250 I t FEET (Approlt.S col.) Appendix Figure 8-10.Locations of passage reaches at Slough 20 during the 1984 open water season. ~t#•.I":.,;y~..':~aI~~_•.:!."'.:'lI.~,,~C".."\1.,_':"~"-.,.....~~. SIDE CHANNEL 21 -PR PASSAGE REACH WATER'S EDGE ----OEWATERED CHANNEL •1984 STAFF GAGE (l40.6S8) ED RIVER MILE o 500 I I FEET (Approll.Seole) :l ....•..l~;\{·......•..•..~..;t\C·..:'!:1~,~\~:. ~~SlJs,rNA OJ !..... W Appendix Figure B-ll.Locations of passage reaches at Side Channel 21 during the 1984 open water seaSOn . J ~J ,•J J I J •,t ))_J ,1 t )1 1 J -..))1 .,} -~SUSlrNA RIVER--EDI42 SLOUGH 21 S 10";i//"'e ,.;:....., -1"""•••~i"~#~:Ii:I'f!k.'~A ..~j~.f.'t'·...•.~...ti:jj,...•••••~.~:...~I"'j-,~#~:''~:fJf"';-~~.". I f:';'iJf',}'..'.. ..".".."'~.J'11 .I (IiiI.•,"....-_.....;7".':"fI1 '"A••--"'""i It .•.~.'..:3~'"~:>Y-".' .',,p>V If·h{t!'''.na-~~.!..J;/"p-.1 ....•._~'P'.,'1".' -'<>0:.""_.~.4 G~~;/""~O~~~iIf&,:",f~n e;"~r,:F-'"I.~'J~{,.~~PR ~~'r>'~".J\' ,..'.....,._m .,'" "-"""""""'........~....~p:<.t".,.'.,..;li'..•••".::~r-{ ~~rei.':.""'".-~ea;·1 Chann.' A6 A4:~~~~T;V;""",~It'"';...", ;\, '\.PR Ic;::I I...... .J:o PR mR -----PR PASSAGE REACH ---WATER'S EDGE - - -DEWATERED CHANNEL EJ)RIVER MILE o 500 I I FEET (Apprall.Scale) Appendix Figure 8-12.Locations of passage reaches at Slough 21 during the 1984 open water season. SLOUGH 22 ~PR PASSAGE REACH WATER'S EDGE - - -DEWATERED CHANNEL ..1984 STAFF GAGE (144.357) ED RIVER MILE o 250 I 1 FEET «Approll.Seole) 144.5ED ';:;')'~~~'l'..... ;. ~ (i .41 l *.., RIVER ------ 4~'':'~·.V··· \~...~e.:f....:-:t!\.'\!:,~.!"o:OO ~-"'.(".";t.."':f~'.~.•,"~l1"'.'L,,1...J :•.l'l........•!".,_...~. ~SUsaNA OJ I..... U1 Appendix Figure B-13.locations of passage reaches at Slough 22 during the 1984 open water season. J .~J I J J _J .,__J )J J J J ~ - - ,~ - - - DRAFT LITERATURE CITED Sautner,J.,L.J.Vining,and L.A.Rundquist.1984.An evaluation of passage conditions for adult salmon 'in sloughs and side channels of the middle Susitna River.Chapter 6 in 1984 Report No.3:Aquatic Habitat and Instream Flow Investigations (May-October 1983). Estes,C.C.and 0.5.Vincent-Lang,eds.Alaska Department of Fish and Game Susitna Hydro Aquatic Studies.Anchorage,Alaska. 8-16 - - - APPENDIX C Thalweg Profiles of Passage Study Sites C-l - - t~ ..... APPENDIX C:THALWEG PROFILES OF PASSAGE STUDY SITES This appendix contains thalweg profiles of slough and side channel passage study sites illustrating passage.reaches identified during the 1984 open water season (Appendix Figures C-l to C-13).With the exception of Slough.19~these figures are revisions of thalweg profiles previously presented in Sautner et ale (1984).The Slough 19 thalweg, which was surveyed for the first time in 1984,is also presented here. Survey data used to complete the Slough 19 thalweg profile are summarized in Appendix Table C-l.Survey data for the other study sites are presented in Quane et ale (1984).These thalweg profiles are only intended to show approximate locations of passage reaches within each study site and due to their 1 imited accuracy,shoul d not be used for other,more detailed analyses. C-2 !!!Ie'..CUI.!LOU!!!".WHISkERS CREEk SLOUGH THALWEG PROFILE IURYIY DATE·1'0111· THALWEI GRADIENT.·'.1 'EET/MlLl! THALWU ILEYATION PROFILI'- THALWII PROFILE ([sT.I·••••• •AIUU RIAl:"'A PAIIAII REACH j:ROSI 1"I:TlON'....".....1.ClC''-' HUD OF SlOUGH 10_ AD'....... tOUtiSAD'.''.,1.10..... ..... .~....~'. ••••••0 •.....................:t •••• o ell •• ......... "00 I W !... ~... ~ ..J 1~...Id Id ::I "Nt.. Moo-0'" IlRUIiBIED STATION cr.'" Appendix Figure C-l.Thalweg profile of Whiskers Creek Slough showing approximate locations of passage reaches. ,l J 1 i •J J )J j ..~J J .~~,,, 1 »1 ))J -)J -,)1 I J })1 MAIN$TEM 2 SIDE CHANNEl THALWEG PROFILE IURIlEY IlATE.nOlu 'HALWI''BADlnT·12.8 fEU MILl TIIALWEI lLrVATlllN '_ILl'-- TIIALWEI UOfILE lUT·I'••••• 'AIIAot IIEACH·,u, 'ASSAfIt IIUCH ClIll'l IlCTlllN...1_......,.... _.. •IKeMA.... AI,••UIl II.....~. ...,....U8I U4.•11 InU..IED STAtiON 11••11 ....NOIII/'ll'GHANNEL....... AI'.e ....-....•.• "I I j j j • j j , j • ,iii iii', • , , , , • , , ,j j , , , j j ,i j ,6 , ,iii', , ,.DO 10+00 ".00 1O+OCt ••00 10+00 ...00 '$0+80 4aWlO ... ... !... I ... §... OJ....~.n ... n ... I ..... ~ NoII'HIAOT CHANNEL...........p ................. ! I~.... E ... ... ... ........"..... '-""".'•• AO','e•....... ·':100 'i ,'0100 ' ,i i ••100 ; , ,'IGloo i , , •••100 i ,i ,40100 '••i 4.lDO iii i IOlOO i i • ,..100 i 8 i i eoiGO ""EAMIED ITATlllN 11...1 Appendix Figure C-2.Thalweg profile of Mainstem 2 Side Channel showing approximate locations of passage reaches, .l•..J ........a:'.ll SLOUGH SA THALWEG PROFILE IURVEY DATE·121011/'~IOI' THALWEII GRADIENT'II.'FEET/MILE THALWEG ELEVATION PROFILE'- THALWEG PROFILE (EST."••••• PASSAGE REACHo ,til, PASSAGl REACH CRoh SECTION.•••....01.LOC.....' NORTHEAIT CHANNEL ...,,:III •lO COWUMIieI "II.~L AIIO ..CItA••L CW IUM*t ••~ ............ 'D~I~~:-i 1••r'~~I::• j 8M ... s ~...... d ...II. i I-n I 01 ....0010+00 .-0', , , ,1 ' , ,8 i , , ,g i ,ii'I •,iiI iii &ii'ii'i , ,i , , , • i • ·1.00 0 00 ....00 10+00 I'oa &V+uv a+uo ITRUM'ED STATION 11 ••11 I .. ..It..:ill .....-··8 ........."". ..lIIII 1>4 j .,0 IS ... ~II•......:. :IN II' .s+oo10+00"+00lO'OOu+oo10+0011+0010+00411...00 I..,I , , • • • • , , •i i • , , • , , i • • • • • , • , , , , , , , • i •iii iii i , i • 40...00 ITRUM.ED STATION If••" Appendix Figure C-3.Thalweg profile of Slough 8A showing approximate locations of passage reaches. J J t J ,•t J J J !J J J J J I ) 1 I 1 j 1 ))J )"))l 1 J 1 } ..... MUD 0' IlWO• .D.......I1'•••' ................1............. ... 00... SLOUGH 9 THIILW~G PROF!L~ ..... ..,......, ... IUlIVIY lI4YE.110114111011"1"011 .Y""LWE'IllAOIEIIY.'1.1 flETlIIILI YH_LWII ELEV_TIOtl ",O"L(·-- :::::::~:~I IICYIOII..._...._. ... ............... ... ........ ... •••00 ! I Ii~.......:>... ~ n I 0'1 ".U"IElI "UIOII 111111 Appendix Figure C-4.Thalweg profile of Slough 9 showing approximate lo€ations of passage reaches. ......PI ........ SLOUGH 9A TAALWEG PROFILE .....vn PAT!'110'",",LWEI '~AOltll'••1.',tIT/III\.! 'HAL."ILEVATIOlI PROfILE'- ,HAL.I'.IOfIl.I~.,.•1 fII ••~. 'ASIAGt ~EACH'- 'AIIAIl I£AtH C •KCtfON'.1 ,.......'-OUT.' .....lID ...HZ ... .. -·4. "0 "..... "4 .·0 o ""e.:••••........o 0 0 ": .....•ltDl ............... .............. II+QClI Appendix Figure C-5. "~U""D 'U'ION II.., I Thalweg profile of Slough 9A showing approximate locations of passage reaches. J J l J J )1 J ,J J ,J J J J ) 1 )1 }J -,J )1 J 1 .~J I t )l "'.....IIDE CHANNeLA.,.••U. ••I.'H. N_ n4.. AI . IU.••' N:IINl£' ..... ...,....en .. ".,.. ettoo SIDE CHANNEL 10 THALWEG PROFILE ••,••tAM !!!:'" N. ~OtOO IUlIVlY DATE'U0120 IUOln- TItAt.WU 8IIADllHT'te.S FElT MILE THALWt8 lLlVATION PIIOfILI·- PASSAGE IIlACH.'.a.. PU-... ... n jI Q)-~ >=j ... ~.......::>10: l-... CDlWLI.CNCE .,•••II.QU;....."toAftII.Ol,tIti 10 ........... ITIIUIlIEO STATION 110011 Appendix Figure C-6.Thalweg profile of Side Channel 10 showing approximate locations.of passage reaches. •....00 .AD or .LOUtN AD'.'t"l.. 10'"......_............ e..-e..-'..-"." II ,.. .-8 •••• I. ,.. ..... ...-..".- ,.. ..... SLOUGH II THAlWEG PROFILE SURYEY DATE.1110 •., THALWII IIIADIEHT-II.'nET/IIILI THALWII ILIVATION PllOfILI.-- THALWII PROflLI llln-••••• PAllAlI REACH-flJ PA"AIE IIIACH ClIO"SIemON..._ON.'00"'" ... AD'.'I&H••••••• 1''''00 ... ..+00 ,.. .... ...-... n I \0 !... z .,.~.......::a.....I- ... ••• ••••..... ITIIIAII.ID IT.\TION 11••11 Appendix Figure C-7.Thalweg profile of Slough 11 showing approximate locations of passage reaches. I J .J J !J I J ,J J J J ••I I j J ) }-~))J }1 1 j l ~J J J )} UPPER SIDE CHANNEL II THALWEG PROFILE IURVJY pATE.110720 THALWEll GRADIENT'1l.2 fEET/MILE THALWEG ELEVATION PROFILE-- PASSAGE REACH',r.a.. PASSAGE REACH CROSS SECTION-"'lAHIOI.LOCAt_ r=1.+00 HEAD Of 1101 CHANNEL AD'.''.'EIIUNa 10+00.....00 CONf,-urMCC WIfH /IUO 01'"-_" ..:II:-"'1: - n I j OIl...... 0 -~no I-~ ld.....11 ld ld :::) lIl:.,.l- ... .ll Q.j.OO .+00 STREAMBED ITATIONU.... Appendix Figure C-8.Thalweg profile of Upper Side Channel 11 showing approximate locations of passage reaches. .1lII140 """,,- SLOUGH 19 THALWEG PROFILE SURV~Y DATE'841018 THALWEG GRADIENT·10.0 fEET/MILE THALWEG EL~VATION PROFILE-- PASSAGE REACH'~ PASSAGE REACH CROSS SECTION'I'••PPIIU-LOC.IIONI 'liD s r lI' I I "lloo~ AO'.lI lIAIE 140,014 I'IIlIIIII:PIID "'111"1:11 WATEII',EOK PlIm '"'I-0+60 ~i·'9 'II OVEIIFLOW CHANNEL I • fl. TID 1'11](PIID 1I.1fI"."WATEII',.0111 OVEIIFLOW CHANNEL •I 111 '10 ("l I 1I11I H -........:::T.lI 1100 Z 0 t 'II-I PIli '''11 PIIm ;:Ii III ..J III III no ::t GI:..lI, "1114 -,0 STREAMBED STATION (fut) Appendix Figure C-9.Thalweg profile of Slough 19 showing approximate locations of passage reaches. J J J J J I J J .~J •i )t }J J J t ~}))1 ~!J l 1 J }1 '}}J j I 1 SURVU OATI.1S0ri0 THAL.U eIl.lllIe:IIT·11I.0 'UT/MILe: THALWU e:LEVATIOIt PRO,IlE.--- P"'SAGE RUCHo .a. PASSA"RUCH CROII.IECTIOIt••1 ,_........"CIIIl ....... SLOUGH 20 THALWEG PROFILE "11 ..lilt iIOU'"0#::nrlLt. 11- ITREA"'EO ITA TlOIi 11••11 •• II IIOU'"tW,.-utAlI'f ....,. Appendix Figure C-IO.Thalweg profile of Slough 20 showing approximate locations of passage reaches. 0+00 ..:II: U"'AlE 140.••7 -HOO ., .'JlIII: -10"'+00 ••:m. -10"00'11+00 SIDE CHANNEL 21 THALWEG PROFILE IURVEY DATE'12101. THALWlEa aRAOIIENT·8.1 fIElETlIlILt: THALWEG ELEVATION PROfiLE-- PASIAOIE REACH-~ PASSAGIi'REACH CROSS SECTION'.,IA_O•.lOUJ1OII1 ,.]1[ -10 AD'.•'0.11' ..s , -11+00 ,.. '40+00 '101 C:HAMlflL II II '"OI'ILI 'JUDV Aft. ..m -"+00 ,.. ~"I ...n n.., ... r.o n I.....,..w ~,.. z 0 r..j: ~.... oJ III 'II III ~-=I-no .., ,.. ·10.1.00 STREAMBED ITAlION lI..n Appendix Figure C-ll.Thalweg profile of Side Channel 21 showing approximate locations of passage reaches. J )J t ),)I I J )J J ,t J I )) 1 ~1> ¥J )))J )l J 1 J 1 i } SLOUU t. II!I'_IU .._.... / SLOUGH 21 THALWEG PROFILE IURvn DATt:'I.OIU 1110101111'10.4 'HALWEI IRADIEN"II.'fEET/MILE 'HALWEI ELEVATION PROfILE'--- PAIIAIE REACH'~ '''IAGE IlEACH CROSI IECTlONo ••I......~......_ I Ii,iii ,iii iAOr.~~::·1:141 &i 8 i i '..100"i,i i·'"eo-J.oo"R·'·~.,~lItDO JOt-GO ...... _THun ttlAD 011 'lOU'"' ADf••nil I en.oNI ....00 ...,••tAti •...,Oill "',"W(l1"_U 01 Il.OliON ..~..1••00 NORTHEAST CHANNEL NORTH.EI'CHANNEL....~ fI, r•• ... ..... ,.. n .. ... .......II/f....... 'or••IAII 141.0.' .~.. '0< .., '00 n !•••I.....--1=00 !•••5~,..w w '"~'" ,.. fl. '" "REAM'ED STATION Itttil Appendix Figure C-12.Thalweg profile of Slough 21 showing approximate locations of passage reaches. ".00 ...... IlOU'" 10'"'••1144.'NI .~oo '.,... .~. ...~oo'''00 SLOUGH 22 THALWEG PROFILE ..III IUIIVfY DATI·IIOTII THALWEI "'ADIENT·.1.0 fUTlMl1..I 'HAlWII ILEVATlOH l'tIOflll·-- '.111M.iliAC"'A . 'AIM.IIIACH C"R081 HCTlOH'.1 1"-'....,_, AD'•••All ~ ... 10 -,UI/r•••/YI.-........fUaJ:&- '00 NI '00 n ,.. I j..... U1 ,. ~ Ii 'oo)i ~......'ro::> It...... ... "I ITIlIAMIID nATION ....II Appendix Figure C-13.Thalweg profile of Slough 22 showing approximate locations of passage reaches. j J ~,~~].~I I .i J J J J J J ! 1 )J )}j \-l j 1 )l J 1 J 1 Appendix Table C-1.Sununary of survey data collected for the thalweg profile of Slough 19 during the 1984 open water field season. LOCATION OF THALWEG:Slough 19 (RM 140.0) SITE FLOW:0.1 cfs USGS DISCHARGE:5200 cfs DATE:OCTOBER 18,1984 TBM ID:ADF&G 140.0 RB 830914 Slough 19 Tha lweg Water Station Elevation Depth WSEL Substratea Habitat (ft)~ft)__lit)__(ft)__,-Code Descilltion n I,..... 0'1 -4 +79 -4 +40 -4 +24 -4 +11 -3 +95 -3 +46 -3 +29 -3 +13 -2 +83 -2 +12 -1 +60 -0 +92 -0 +66 -0 +31o+00o+36o+58o+76 1+19 1 +45 1 +70 1 +90 2 +20 2 +56 717.70 717.79 717.16 717.81 716.96 717.64 717 .09 717.95 718.01 718.86 717 .06 718.77 718.90 716.99 718.58 718.80 718.70 718.77 717.15 718.83 718.84 718.56 718.77 719.28 0.20 0.17 0.80 0.15 1.00 0.33 0.89 0.08 0.13 0.12 1.90 0.20 0.13 2.03 0.44 0.22 0.32 0.27 1.90 0.19 0.21 0.48 0.28 0.09 717.90 717.96 717.96 717.96 717.96 717.97 717.98 718.03 718.14 718.98 718.96 718.97 719.03 719.02 719.02 719.02 719.02 719.04 719.05 719.02 719.05 719.04 719.05 719.37 SASI BOSI SISA SIBO SISA SISA COSA BOSA SISA COSA SISA SISA SISA SISA SISA SISA SISA SISA SISA SISA BOCO Mid-Riffle Riffle/Pool Mid-Pool Pool Constriction Mid-Pool Pool Constriction Mid-Pool Pool/Riffle Mid-Riffle Riffle/Pool Mid-Pool Pool/Riffle ,Ri ffl e/Poo 1 Mid-Pool Mid-Pool,Mouth Pool/Run Mid-Run Run/Pool Mid-Pool Pool/Run Run/Pool Mid-Pool Pool/Riffle Riffle/Pool Appendix Table C-1 (Continued). Station (ft) Thalweg Water Elevation Depth WSEL Substratea Habitat (ft)(ft)(ft)Code Description n i...... -.....i 3 +07 3 +30 3 +60 3 +69 4 +11 4 +35 5 +30 5 +81 5 +93 6 +46 6 +67 6 +81 7 +04 Overflow Channell -4 +79 -4 +20 -3 +38 Overflow Channel 2 -0 +31o+60 1 +20 718.29 719.15 719.31 719.47 719.89 719 ..95 718.84 719.65 720.17 720.79 720.30 720.48 721.05 717.70 719.89 718.06 716.99 720.45 718.33 1.14 0.28 0.13 0.01 DRY ICE 1.03 0.18 0.00 ICE 0.35 ICE 0.00 0.20 DRY 0.00 2.03 DRY DRY 719.43 719.43 719.44 719.48 719.89 719.95 719.87 719.83 720.17 720.79 720.65 720.65 721.05 717.90 719.89 718.06 719.02 720.45 718.33 SISA SISA SGSA lGSG lGSG SALG SISA SA BOSI COBO CORU CORU CORU SASI CORU CORU SISA CORU CORU Mid-Pool Pool/Riffle Mid-Riffle Mid-Riffle Mid-Riffle Riffle/Pool Mid-Pool Pool/Riffle Mid-Riffle Riffle/Pool Mid-Pool Pool/Riffle Riffle Mid-Riffle High Point in Over- Flow Channel Mainstem Waters Edge Mid-Pool High Point in Overflow Channel Mainstem Waters Edge a Substrate code defined in Methods Section (see Table 2). J ,J J J J l )J )I l J J J J I J - - LITERATURE CITED Quane,T.,P.Morrow,"and T.W.Withrow.1984.Chapter 1:Stage and discharge investigations.In Report No.3:Aquatic Habitat and Instream Flow Investigations (May -October 1983),by C.Estes and D.Vincent-Lang,eds.Anchorage;Alaska .. Sautner,J.,L.J.Vining,and L.A.Rundquist.1984.An evaluation of passage conditions for adult salmon in sloughs and side channels of the middle Susitna River.Chapter 6 in 1984 Report No.3:Aquatic Habitat and Instream Flow Investigations (May-October 1983). Estes,C.C.and 0.5.Vincent-Lang,eds.Alaska Department of Fish and Game Susitna Hydro Aquatic Studies.Anchorage,Alaska. C-18 - -i APPENDIX D Cross Sectional Data 0-1 .r-- i ,~- - - - APPENDIX 0:CROSS SECTIONAL OATA This'appendix·contains cross sectional data collected at passage reaches within selected slough and side channel study sites of the middle Susitna River.Survey data collected at selected passage reaches are summarized in Appendix Tables 0-1 to 0-58.Abbreviations of substrate type 1 i sted in these appendix tabl es are defined in Section 2.2.3 (Table 2)of this addendum.Appendix Figures 0-1 to 0-58 present these cross sectional data in graphic form.Relative water surface elevations upstream and downstream of selected passage reach cross sections are summarized in Appendix Table 0-59. 0-2 Appendix Table D-1.Cross section profile of Passage Reach I in Whiskers Creek Slough,October 4,1984. ============================================================~, STATION <it) RELATIVE ELEVATIOI\l WSEL (ft)(ft)SUBSTRATE COMMENTS ----~------------------------------~~------,------------------~--- 0.00 0.00 7.00 9.80 12.30 14.00 15.50 1b.40 17.60 19.00 20.90 2:3.20 26.00 2'7.10 28.20 30.8t) 32.60 34.60 38.00 39.20 41.70 43.00 44.40 47.00 50.20 52.50 54.70 56.40 59.30 61.20 65.70 68.40 70.50 '72.00 76.30 78.50 81.40 83.00 86.40 87.10 90.50 95.50 98.60 100.50 102.70 100.00 99.73 99.21 98.6b 98.60 98.56 98.74 98.58 98.62 98.41 98.54 98.65 98.69 98.82 96.66 98.56 98.69 98.72 98.72 98.89 98.75 98.59 98.56 98.71 98.70 98.75 98.66 98.72 98.55 98.70 98.82 98.87 98.79 98.69 98.77 98.76 98.54 98.69 98.56 98.83 98.75 98.79 98.71 98.61 98.81 98.66 98.68 98.71 98.74 98.68 98.67 98.71 98.72 98.71 98.69 98.82 98.71 98.71 98.69 98.72 98.72 98.89 98.79 98.82 98.81 98.83 98.83 98.84 98.84 98.84 98.81 98.81 98.82 98.87 98.84 98.85 98.85 98.83 98.79 98.78 98.67 98.83 98.75 98.79 98.77 98.77 98.81 VEG VEe VEG SISA SIRU LGRU LGRU LGRU LGRU LGRU LGRU RULG RULG RULG LGRU LGRU RueD Ruea Ruea Ruea Ruea Ruea RULG RULG LGCO LGeO LGCa LGCO LGGO LGGO LGGO LGGQ LGCO LGCO LGCO LGCO LGGO LGCa LGCO LGCO L.GeO LGCO LGCO LGCO eOLG LEI HEADPIN 88 LB HEADPIN LWE F~WE ..,.. - D..3 ~-------~------------~--~*----------------------------------- Appendi :-:Table 0-1-Continued. ============================================================ RELATIVE STATION ELEVATION WSEL (f t)(ft)(f t)SUBSTRATE CO/"IMENTS r-----------_._---------------------------------------- I 108.60 99.10 CDLG 11'7.50 98.99 eOLS .....123.00 98.83 98.83 eDLG LWE 126.50 98.78 98.83 LGRU 131.00 98.73 98.82 LGRU 13:3.80 98.80 98.81 LGRU-138.00 98.66 98.81 LGRU 140 •.00 98 ..61 98.77 LGRU 142.20 98.59 98.78 LGRU 144.00 98.52 98.77 LGRU 147.00 98.54 98.78 LGRU 149.60 98.60 98.75 LGRU 153.00 98.77 98.77 LGRU 156.00 98.59 98.67 LGRU 161.40 98.76 98.76 LGeD 16'7.00 98.71 98.71 RUeD RWE~17().50 98.86 RueD 176.00 99.01 Ruea 179.00 99.08 RueD 180.50 98.88 98.88 Ruea LWE 183.50 98.81 98.88 RueD 185.80 98.'77 98.88 LGRU 187.00 98.94 98.94 LGRU 190.50 98.77 98.88 LGRU 195.00 98.84 98.88 LGRU ft<~199.0Q 98.87 98.87 LGRU 202.50 98.79 98.79 LGRU 205.50 98.70 98.79 LGRU 207.00 98.65 98.79 LGRU~208.10 98.79 98.79 LGSl RWE 209.00 99.15 SISA 211.50 99.43 SISA 216.80 99.95 VEG GB RB HEADPIN 216.80 100.19 VEG RB HEADPIN ,~ 0-4 Appendix Table D-2.Cross section profile of Passage Reach II in Whiskers Creek Slough,October 4,1984. ==========================================:=================== RELATIVE STATION ELEVATION WSEL (ft)Cft)(ft)SUBSTRATE COMMENTS 0.00 0.00 3.00 8.00 11.50 1t!:h 00 20.50 21.50 22.50 23.00 25.10 27.00 29.40 31.00 33.00 35.80 38.00 42.00 43.40 44.60 45.50 45.90 47.00 48.00 48.50 49.90 52.ell) 53.30 54.50 56.70 56.70 100.00 99.91 99.78 99.56 99.71 99.65 99.76 99.62 99.62 99.39 99.44 99.35 99.26 99.26 (19.27 99.33 99.33 99.24 99.26 99.25 98.96 99.01 99.06 99.07 99.30 99.34 99.28 99.3() 99.90 100.74 100.87 99.39 99.44 99.36 99.35 99.34 99.38 99.33 99.33 99.25 99.26 99.25 99.15 99.17 99.15 99.16 99.30 99.35 99.31 99.30 SIRU SIRU SlRU SIRURueD Ruea SIRU SIRU RULG RULG RULG RULG RULG RULG RULG eORU RU RU RU RU LGRU LGRU RULG RULG RULG RULG RULG SILG SILG VEG VEG LEi HEADPIN GB LEI HEADPIN LWE RWE GB RB HEADPIN REi HEADPIN ------------------------------------------------------------- 0-5 ~l Appendix Table 0-3.Cross section profile of Passage Reach I in Mainstem 2 Side Channel,Octob~r 5,1984. ===========:=============~=================================== F~ELATlVE STATION ELEVATION WSEL (·ft)(ft)(·ft)SUBSTRATE COMt1ENTS .... (l.O!) 0.00 5.00 12.40 18.00 20.40 24.90 28.(1) 30.00 32.40 34.50 35.10 36.60 37.60 38.40 39.00 40.20 41.10 42.30 44.0l) 45.00 45.90 46.70 48.00 49.00 50.10 51.30 53.50 57.50 58.70 61.40 64.00 64.00 100.00 99.89 99.69 99.59 99.47 99.63 99.35 99.64 99.59 99.24 99.12 98.94 98.89 98.94 99.07 98.74 98.70 98.77 99.03 99.00 98.82 98.84 98.68 99.04 98.86 98.89 98.91 99.11 99.20 99.30 99.24 99.46 99.52 98.94 98.95 98.95 99.07 98.92 98.92 98.91 99.03 99.00 98.91 98.93 98.93 99.04 98.90 98.91 98.91 SIRU SIRU SlRU SlSA SlSA SlSA SISA SISA SlSA SlSA SlSA SIRU SlRU SIRU SlRU LGRU LGRU LGRU RUSA RULG RULG RULG RULG RULG RULG SARU SASI SASI SASI SACO SA CO SAeo SACO 0-6 LE.~HEADF'I N GE LEI HEADPIN LWE RWE GE RB HEADPIN REI HEADPIN Appendix Table 0-4.Cross section profile of Passage Reach II in Mainstem 2 Side Channel,October 5,1984. ============================================================ STATION (of t) RELATIVE ELEVATION WSEL (ft) (ft)SUBSTRATE COMMENTS 0.00 0.00 1.50 4.40 7.50 11.90 15.60 18.60 19.80 22.60 23.7() 25.60 26.50 28.50 29.10 30.30 32.40 32.90 36.00 37.70 40.00 40.90 .42.00 44.20 45.50 47.20 47.80 49.70 51.90 53.10 54.70 55.80 58.60 61.00 64.20 65.40 67.00 68.20 70.50 71.50 73.90 74.80 76.10 77.80 81.50 100.00 99.64 99.81 99.69 99.56 99.55 99.18 99.17 99.17 99.06 98.85 99.09 98.71 98.91 98.75 98.83 98.92 98.78 98.79 98.93 98.60 98.87 98.66 98.52 98.82 98.74 98.80 98.70 98.61 98.73 98.78 98.61 98.83 98.80 98.74 98.59 98.64 98.75 99.19 98.82 98.80 98.76 98.99 99.t 1 99.08 98.85 99.09 98.81 98.91 98.81 98.83 98.92 98.80 98.79 98.93 98.76 98.87 98.77 98.76 98.82 98.76 98.80 98.73 98.75 98.74 98.78 98.75 98.83 98.80 98.74 98.74 98.74 98.75 99.19 98.82 98.80 98.76 Boca Boca Boca RueD Ruea Ruea SIRU Ruea RueD Ruea RueD Ruea SIca SICD SIca RULG RULG SIRU SIRU CORU eORU eORU eORU eORU CORU eORU caRU CORU eORU eDRU eDRU eORU Ruea Rueo Ruea Ruea Ruea eORU CORU eORU CORU CORU eORU eORU CORU 0-7 LEI HEADPIN GB LB HEADPIN L~JE RWE - - ~- ~----------------------------------------------_._---~-------- Appendix Table D-4.Continued. ============================================================ RELATIVE STATION ELEVATION WSEL (f t)(ft)(f t)SUBSTF:ATE --------------""""--~---------_.._--- 85.60 99.19 CORU 91.50 99.23 CORU 96.00 99.24 CORU """99.80 99.29 eORUi 99.80 99.31 eORU COI"IMENTS GB RB HEADPIN RB HEADPIN ..... 0-8 -------...----------------------------------_._-....------------------ Appendix Table 0-5.Cross section profile of Passage Reach III in Mainstem 2 Side Channel,October 5,1984. ============================================================:= STATION (ft) REU~TIVE ELEVATION I'JSEL (ft)(f't)SUBSTRATE COMMENTS 0.00 (l.OO 3.00 8.00 15.00 22.()() 29.00 37412<) 41.20 44.10 49.50 53.90 58.30 60.70 62.50 64.30 66.40 69.40 70.80 73.80 76.50 82.10 87.30 88.80 90.40 91.00 92.30 95.50 101.70 103.50 105.50 109.40 1.15.20 119.60 121.00 123.10 125.70 127.80 128.50 131.30 1.34.40 135.50 1:39.50 140.90 144.50 100.00 99.90 99.92 99.80 99.69 99.56 99.50 99.14 99.17 99.25 99.45 99.45 98.53 99.07 99.37 99.00 99.02 99.02 99.00 99.05 98.82 98.95 <7'8.97 99.07 98.90 98.81 99.03 99.06 98.90 98.91 98.95 99.01 99.00 98.99 98.85 99.01 98.83 98.88 99.17 99.10 99.30 99.13 99.11 99.16 99.41 99.07 99.37 '19.01 99.02 99.02 99.00 99.05 98.82 98.95 98.97 99.07 98.90 98.83 99.03 99.06 98.95 98.95 98.95 99.01 99.00 98.99 98.88 99.01 98.84 98.90 99.17 99.10 99.30 99.14 99.16 99.16 99.41 LGSG LGSe LeSe LGSe LGSG LeSG LGSG LGSS LGSG RUCD RueD RueD RUCD Ruea RUCD RueD Ruea RueD Ruea RUCD RUCD RUCD RUCD Ruea Ruea Ruea Ruea RUCD Ruca RueD Ruca Ruea Ruea Ruca RueD RueD RUCD Ruea RueD Ruea Rueo F~uea I=\UCD RueD RueD 0-9 LEi HEADPIN GB LB HEADF'I N L[.AJE - 1!IWit"!.\ Appendix Table D-5.Continued. ============================================================ RELATIVE STATION ELEVATION WSEL (f t)(f t)(ft)SUBSTRATE -----------------------._--------,... 146.50 99.33 99.34 RUCD 149.00 ~19.66 99.66 CaBO 150.90 99.75 99.75 COBO 151.70 99.43 99.44 caao 153.80 99.47 99.48 eORU 154.40 99.50 99.50 eORU 154.90 99.66 COF:U 157.50 99.80 eORU 160.90 99.83 eORU 163.50 99.95 eORU 167.90 99.92 eORU 173.00 100.03 eORU 177.60 100.08 eORU 177.60 100.11 ""'" - COMMENTS RWE GB F:B HEADF'!I'-~ RB HEADF'I 1'1 0-10 ----~-----_._-----------------_._------------------------------ Appendix Table D-6.Cross section profile of Passage Reach IVL in Mainstem 2 Side Channel,October 5,1984. =====================================%======================= - - STATICIN (ft) RELATIVE ELEVATION WSEL <·ft)<ft)SUBSTRATE COMMENTS c).oo O.O!) 5.80 10.30 14.00 18.40 22.30 27.60 32.00 35.60 37.60 40.80 43.40 48.70 51.10 52.50 54.20 55.10 58.90 60.00 61.60 65.80 68.40 69.70 75.(lO 78.00 82.20 86.10 88.50 90.00 92.30 95.10 99.50 105.80 113.10 118.40 126.80 134.10 144.00 148.80 152.80 157.50 163.50 166.50 170.50 173.30 173.30 100.00 99.81 9 c'J.17 98.39 98.37 98.16 98.14 97..93 98.03 97.75 97.82 97.35 97.68 97.74 97.73 97.43 97.44 97.68 97.72 97.40 97.53 97.55 97.42 97.55 97.48 97.51 97.49 97.48 97.58 97.44 97.59 97.58 97.67 97.84 97.84 97.74 97.87 97.92 98.11 98.11 98.14 98.28 98.78 98.87 99.57 99.89 100.00 97.43 97.44 97.68 97.72 97.45 97.53 97.55 97.45 97.55 97.48 97.51 97.49 97.48 97.58 97.44 SALG SALG SALG RueaRuea RUea RUea RUCa Ruea RUeD Ruea RueD Ruea Ruea F:ueo Ruea RULG RULG RULG RULG RULG RULG RULG RULG LGRU LGF<U LGRU LGF:U LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU SGRU SARU SA SA SA SA SA SA 0-11 LB HEADPIN GEl LB HEADF'IN Ur.JE RtoJE GB RB HE{~DP I N RB HEADPIN -I - - ~ i - Appendix Table D-7.Cross se~tion profile of Passage Rea~h IVR in Mainstem 2 Side Channel,October 5,1984. ===============================================::=============~=:::::: STATION (oft) RELATIVE ELEVAT:rON WSEL (oft)(ft)SUBSTRATE COMMENTS r I r 0.00 0.00 1.00 2.70 4.20 5.30 6.50 7.30 8.00 8.90 10.00 11.60 12.50 15.50 17.00 19.70 20.70 22.00 23.00 24.50 26.00 27.50 29.00 30.30 31.50 32._80 35.00 36.00 36.90 37.60 38.40 39.40 40.50 41.80 43.00 43.80 45.60 46.00 46.00 59.00 100.00 99.88 100.03 100.02 99.97 99.87 99.76 99.78 99.87 99.79 99.96 99.87 100.10 99.85 99.97 99.93 99.70 99.90 99.70 99.76 99.88 99.78 99.92 99.77 99.97 99.79 99.95 99.78 99.91 99.72 99.76 99.90 99.84 100.04 99.83 100.06 99.84 99.69 99.75 100.17 99.87 99.83 99.87 99.87 99.86 99.96 99.87 lQO.10 99.85 99.97 99.93 99.75 99.90 99.76 99.78 99.88 99.78 99.92 99.78 99.97 99.79 99.95 99.83 99.91 99.85 99.84 99.90 99.84 100.04 99.83 LGSe LGSe LeSe LGSe LGSe LGse LGSG LGSe LGSe LGCO LGCO LGCO LGCO LGCO LGCO CORU CORU CORU CORU eORU eORU eORU CORU eORU CORU eOF:U CORU CCIRU CORU CORU CORU CORU CORU eORU eORU CORU eORU CORU eORU eORU 0-12 LB HEADPIN GB LEI HEADPIN L~JE RWE GEl RB HEADPIN REI HEADPIN Appendix Table D-8.Cross section profile of Passage Reach VR in Mainstem 2 Side Channel,October 5,1984. ==================~========================================= STATION (f t) RELATIVE. ELEVATION WSEL (.ft)(ft)SUBSTRATE COMMENTS ..... 0.00 0.00 4.00 6.40 8.80 11.00 13.10 15.60 17.20 20.20 23.40 23.90 24.70 26.50 27.20 28.50 30.10 32.00 341)30 35.80 37.20 39.20 40.10 42.20 44.20 45.20 45.70 47.80 49.70 52.70 56.90 60.30 63.70 66.20 66.20 100.00 99.91 99.14 98.59 98.19 98.06 97.94 97.62 97.66 97.94 97.80 97.35 97.84 97.30 97.67 97.17 97.40 97.44 97.61 97.16 97.37 97.27 97.16 97.17 97.66 97.28 97.57 97.65 97.60 97.93 98.13 98.28 98.45 98.51 98.60 97.35 97.84 97.33 97.67 97.31 97.40 97.44 97.61 97.25 97.37 97.29 97.28 97.29 97.66 97.28 SA SA SA RULG RULG RULG RULG RULS RULG eOLS COLS COLS eDRU CORU eORU CCRU eORU eORU CORU CORU CORU eORU eORU CORU CORU eORU eORU eORU eORU CORU eORU eORU eORU Ruea Ruea n ,~ LB HEADPIN GB LEI HEADPIN LWE RWE GEl REI HEADPIN RB HEf)DF'IN ..... ..... - ~-------------------------------------------------------------- Appendix Table D-9.Cross section profile of Passage Reach VIR in Mainstem 2 Side Channel,October 5~1984. ============================================================= RELATIVE STATION ELEVATION WSEL (ft)(ft)(ft)SUBSTRATE eOMMEI\lTS ,..,.. 0.00 0.00 4.50 7.00 9.60 12.00 14.00 15.50 17.70 19.80 21.50 22.50 23.80 26.00 27.00 28.2t) 30.60 31.50 33.80 34.40 35.90 37.40 39.00 40.70 43.20 45.80 47.00 48.00 51.40 54.30 56.50 59.90 59.90 100.00 99.92 99.97 99.63 99.64 99.44 99.52 99.24 99.09 99.02 99.09 99.31 99.02 99.10 99 ..23 98.97 99.00 99.14 99.09 98.88 98.99 99.07 99.23 99.05 99.00 99.06 99.11 99.61 99.33 99.48 99.74 99.56 99.79 99.09 99.09 99.09 99.31 99.09 99.10 99.23 99.08 99.08 99.14 99.09 99.09 99.09 99.08 99 ..23 99.11 99.09 99.11 99.11 RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RUeD RueD Rueo RUCD RueD RueD RueD 0-14 LB HEADPIN GB LB HEADPIN Ll.'JE RWE GB RB HEADPIN RB HEADPIN Appendix Table 0-10.Cross section profile of Passage Reach VIIR in Mainstem 2 Side Channel,October 4,1984. =============================================================== STATION <ft) RELATIVE ELEVATION WSEL (ft)(ft)SUBSTRATE COMMENTS 0.00 0.00 4.10 8.1l) 10.30 14.20 19.60 26.30 29.40 32.00 34.50 37.10 41.30 46.20 49.30 52.80 56.50 59.90 63.60 68.70 72.00 75.QO 76.80 80.10 81.40 83.80 86.00 139.10 92.50 95.80 102.90 106.60 111.00 114.10 116.00 117.80 123.00 125.50 129.30 132.10 135.50 139.50 142.30 145.40 150.00 100.00 99.81 99.99 99.79 99.89 99.97 99.59 99.68 99.67 99.65 99.50 99.69 99.49 99.53 99.60 99.65 99.55 99.76 99.53 99.56 99.85 99.52 99.56 99.33 99.49 99.32 99.28 99.53 99.57 99.65 99.55 99.72 99.61 99.58 99.40 99.51 99.47 99.40 99.45 99.61 99.50 99.59 99.59 99.72 99.70 99.52 99.56 99.33 99.49 99.32 99.28 99.53 99.57 99.65 99.55 99.72 99.61 99.58 99.40 99.51 99.47 99.40 99.45 99.61 99.50 99.59 99.59 99.72 99.70 RULG RULe" RULG RULG RULG RULG RULG RULG RULG RULG RULG RULe RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULe RULG I::::ULG RULe F~ULG RULG F~ULG 0-15 LB HEADPIN OB LB HEADPIN LWE OF POOL ABOVE PR - - Appendix Table 0-10.Continued. ============================================================= - RELATIVE STATION ELEVATION WSEL (·f t)(f t)(f t)SUBSTRATE .,------------_.._---_..--------------- 154.30 99.73 99.73 I~ULG 157.90 99.87 99.87 RULG 161.10 99.94 99.94 RULS 163.60 99.76 99.76 RULG 164.80 99.72 99.72 RULG 167.60 100.04 SGRU 169.20 99.80 RUSS 171.60 99.91 RUSe 173.40 100.23 SISA 177.00 100.45 SISA 182.00 100.77 SISA 185.10 100.97 SISA 185.10 101.07 SISA COMMENTS RWE OF POOL ABOVE PR GB REi HEADPIN RB HEADPIN 0-16 Appendix Table D-11.Cross section profile of Passage Reach VIIIR in Mainstem 2 Side Channel,Oct.4,1984. ================================================~==~~============ RELATIVE STATION ELEVATION WSEL (ft)(ft)(ft)SUBSTRATE COMMENTS 0.00 0.(10 3.30 6.elf) 8.00 10.80 13.20 15.70 17.70 19.20 21.00 23 ..30 24.80 25.40 26.20 27.30 28.20 28.60 29.50 30.40 31.30 33~50 36.60 38.00 39.40 41.20 44.00 45.30 46.50 47.30 47.30 100.00 99.87 99.83 100.16 99.81 99.60 99.88 99.60 99.47 99.34 99.34 99.47 99.62 99.35 99.34 99.44 99.28 99.18 99.28 99.33 99.46 99.52 99.57 99.87 99.71 100.06 100.51 100.10 100.34 100.27 100.47 99.34 99 ..34 99.47 99.62 99.35 99.34 99.44 99.33 99.30 99.32 99.33 RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG RULG F~ULG RULG RULG RULG RULG RULG D-17. LEI HEADPIN GB LEt HEADPIN LWE Rli-JE GEt RB HEADPIN REI HEADPIN l __~~~~___~__________________________________________________ ?\ppendi x Table D-12.Cross section profile of Passage I:-':each II in Slough SA,October 6,1 r-.184......============================================================ RELATIVE STATION ELEVATION WSEL (ft)(f't:.)(·Ft)SUBSTR/-1TE COI'1MENTS ------------------------------------------------------ 0.00 100.(>0 SISA LEt HEADPIN 0.00 99.86 SISA GEl LEI HEADPIN l..30 99.10 SISA 2.20 98.24 SICa 6.00 97.93 SICD 8,,70 97.92 SICO 11.50 98.07 SICa 15a30 98.20 eORU 17.10 97.85 eORU 19.60 97.65 RULG .21.60 97.58 RULG ~23.20 97.31 RULG 24.40 97.13 LGRU 25.00 97.00 97.00 LGRU LWE f"""25.90 96.90 96.96 LGRU 27.10 96.79 96.97 LGRU 28.20 96.98 96.98 LGRU 30.00 97.03 97.03 LGRU 30.50 96.84 96.98 LGRU 30.90 96.82 96.96 LGRU 32.50 97.06 97.06 RULe ~33.50 96.93 97.03 RULG 34.90 97.01 97.03 RULG 35.50 97,,03 97.03 RULG RWE-36.50 97.27 RULG 37.40 97.48 RULG 39.10 97.44 RULG 41.00 97.39 RULG 43.30 97.51 RULG 44.80 97.36 8:tRU 46.10 97.73 SIRU-48.20 98.04 SIRU 51.40 98.26 SIRU 55.50 98.57 SIRU...-60.90 99.22 SIRU 65.60 99.81 SI GB REI HEADPIN 65.60 99.98 81 RB HEADPIN-- ------_._---_._-------~._--_._-------------_._--------------------- ~' 0-18 --------------------------------~----------------------~-----AppendiN Table 0-13.Crass section profile of Passage Reach IV in SlOLlgh SA,October 6,1984. ==============~============================================~""" RELATIVE STATION ELEVATION WSEL (ft)(ft)(·f t)SUBSTRATE COMl"lENTS ,."., ~--------------------------------------------------- 0.00 100.t)(l .RULG LB HEADPIN 0.00 99.95 RULG GEl LB HEADF'IN 1.00 99.99 RULG 3.00 99.86 RULG 4.00 99.48 RULG 4.60 99.38 RULG ~ 5.80 99.07 RULG 6.90 99.01 99.01 LGRU LWE 8.10 98.98 99.00 LGRU 9.40 98.93 99.01 LGRU 10.10 99.05 99.05 LGRU 11.20 98.95 99.00 LGRU ~, 12.00 98.99 99.00 LGRU 13.30 98.95 99.00 LGRU 14.40 98.89 98.99 LGRU 16.10 98.90 98.98 LGRU ~ 17.50 98.89 98.99 LGRU 18.50 98.84 98.99 LGRU 19.30 99.01 99.01 LGRU ..... 20.70 98.96 98.96 RUeD 22.00 99.02 99.02 RUea 23.90 99.1<)99.it)RueD 25.00 9.8.94 99.02 RUea 26.00 99.01 99.01 RUea 27.10 99.18 99.18 F(UCO -28.10 99.01 99.02 LGRU 29.70 99.10 99.10 LGRU 32.00 99.02 99.02 LGRU RWE RUea ~.33.10 99.28 35.00 99.11 RueD 36.50 99.34 SIRU 38.50 99.45 SISA 41.60 100.48 SISA GB RB HEADPIN 41.60 100.53 SISA RB HEADF'IN ~ ,R1iIPf, 0-19 ,....----------------------_._-_.---~._---~--------------------_._---- Apper,di :-:Table 0-14.Cross section profile of Passage r':::Each V!L in S10L.lgh SA,October 6,1984. .....============================================================= RELATIVE STATION ELEVATION WSEL (f'l:)(ft)(f t)SUBSTf:;:ATE COI'1MENTS ---_..._-------------------------------------------------- 0.00 100.00 S1 LEi HEADPIN 0.00 99.86 81 GB LB HEADPIN:-3.50 98.61 SISA 6.00 97.98 RUSI 8.90 97.79 RUCD,.,...10.80 97.59 RUeD 12.C!O 97.52 97.52 RULG U&JE 13.10 97.61 97.61 RULG 14.50 97.44 97.49 RULG 15.10 97.55 97.55 RULe 17.00 97.53 97.53 RULG-18.70 97.60 97.60 LGSG 20.40 97.59 97.59 LGSG 21.80 97.69 97.69 LeSG 23.60 97.84 97.84 LGSe 24.70 97.65 97.65 LOSG 25.80 97.60 97 ..65 LGSe 27.40 97.65 97.66 Lese-29.50 97.63 97.64 Lese 30.00 97.70 97.70 LeSG 32.30 97.61 97.61 Lese ~33 ..2t)97.51 97.54 LGSG 34.00 97.64 97.64 LGSe 35.00 97.44 97.49 Lese 35.60 97.51 97.51 LeSG 36.20 97.39 97.48 LeSG 37.00 97.30 97.48 LGSe 37.80 97.41 97.48 LGSe 38.50 97.58 97.58 LGCO 39.20 97.42 97.46 LGCO 4'0.30 97.47 97.47 Leco RWE ,~41.50 97.55 I_Geo 42.40 97.73 LGCO 44.80 97.87 COLS t~48.60 97.84 LGRU 51.30 98.02 LGRU 54.30 98.00 RUCO 57.80 98.30 RUCD 62.00 98-.25 SlSA 64.50·98.85 SlSA GEi REi HEADP I I'~ 64.50 98.92 SlSA RB HEADPIN- 0-20 -----------~-------------------------------------------------Appendi )«Table 0-15.Cross sec:tion profile of Passage Reach VIR in Slough SA,October 6,1984.....============================================================ RELATIVE STATION ELEVATION WSEL (f t)(f t)(f t)SUEISTRATE COl"lI"lENTS ------------------------------------------------------ 0.00 100.00 RUCa LB HE?iOPIN 0.00 99.87 RUea GB LB HEADPIN ~, 1.50 99.88 RUeO 2.80 99.68 99.68 Ruca LWE 4.20 99.83 99.83 RUeD ~ 4.80 99.80 99.80 RUCO 6.10 99.66 99.66 Rueo 7.00 99.73 99.73 CORU 7.50 99.33 99.5:2 eCRU ~ 8.40 99.49 99.49 CORU 9.90 99.41 99.41 eCRU 10.70 99.29 99.37 eORU 12.20 99.13 99.35 CORU 12.90 99.41 99.41 eORU 13.60 99.07 99.38 eORU ~ 14.60 99.35 99.36 eOBO 15.80 99.30 99.36 eOBO 16.40 99.44 99.44 eOBO 17.30 99 •.36 99.36 COBO 18.00 99.33 99.35 eOBO 18 ..50 99.45 99.45 eOBO 19.50 99.53 99.53 CaBO ~ :21.20 99.55 99.55 eoao 22.50 99.49 99.49 CaBO 24.20 99.45 99.45 Rueo ~ 25.20 99.58 99.58 Ruea 25.60 99.23 99.42 Ruea :26.(H)99.41 99.42 Rueo -26.90 99.59 99.59 eORU 27.90 99.64 99.64 eORU 28.70 99.81 99.81 eORU 29.70 99.63 99.63 eORU ~ 30.10 99.50 99.50 eORU RWE 30.40 99.72 eORU 31.20 99.72 eORU 31.80 99.99 SIao 34.00 99.92 SIao 36.70 99.88 SIao ~ 38.40 99.83 SIEID 39.50 99.72 RueD 40.50 100.Q2 VEG 44.00 99.95 VEG 45.60 99.94 VEG GB RB HEADPIN 45.60 100.15 VEG REI HEADPIN -------~~----~-------------~---------------------------------- 0-21 ,~ --------------------------------"-----"----------------"------- Appendh:Table,D-16.Cross section prof i 1 e of Passage Reach VIIR in 510Llgh 8A,October 6,1984. =============================================~============== RELATIVE STATION ELEVATION WSEL (ft)(ft)(of t)SUBSTRATE eOl"IMENTS -------------------..,-------_.._-------------------------- 0.00 100.00 VEG LB HEADPIN 0.00 99.82 VEG .<-GEl LB HEADPIN 1.00 f-?9.72 VEG 2.40 99.48 RUeD 4;20 99.41 RULG 6.00 99.38 RULG f""";7.~0 99.62 eORU 8.70 99.57 eORU 10.00 99.52 eORU-11.00 99.63 eORU 12.20 99.54 eORU 13.30 99.50 eORU-13.70 99.27 99.27 eORU LWE 14.90 99.21 99.26 .eORU 16.40 99.17 99.25 eOF(U 17.50 99.36 99.36 eORU 18.70 99.04 99.24 RULG 19.70 99.38 99.38 RULG 20.60 99.08 99.25 RULG r 21.30 99.27 99.27 eORU 22.40 99.13 9'9.23 eORU 23.20 99.23 99.26 eORU-24.70 99.04 99.23 eORU .25.60 99.12 99.24 eORU 26.30 99.18 99.23 eORU-28.50 99.19 99.24 CORU 30.00 99.32 99.32 CORU 31.70 99.13 99.21 eORU 32.80 99.31 99.31 eORU r-33.80 99.01 99.20 eORU 34.70 99.12 99.21 eoF'~U 35.70 99.18 99.20 eORU 36.2C)99.01 99.20 eORU 37.00 99.30 99.30 eORU 38.50 99.13 99.18 eORU ~39.70 99.18 99.19 eORU 40.50 99.17 99.18 eORU Rv.JE 41.50 99.34 eORU-43.00 99.43 eORU 45.10 99.36 eORU 47.30 99.30 eORU 49.00 99.29 Rueo 51.50 99.42 RueD 53.00 99.65 eOBO 55.40 99.76 eOBO t~57.40 99.82 caBO 59.00 100.01 COBO GB RB HEADF'IN 59.00 100.18 COBO r,B HEADF'IN ~------------------------------------------------------------f""" AppendiN Table D-17.Cross section profile of,Passage Reach VIIIR in Slough 8A,October 7,1984. ============================================================= STATION (·f t) !:'{ELATIVE ELEVATION WSEL ('ft)(ft)SUBSTRATE COMMENTS 0.00 (>.(H) 2.50 3.80 6.00 7.50 9.00 10.50 13.50 14.00 16.30 18.00 21.00 22.00 22.70 24.10 25.10 26.60 27.70 29.40 30.50 31'.10 32.00 33.80 35.20 36.00 37.30 38.70 41.0el 43.30 45.00 47.00 48.40 49.40 50.90 52.60 58.10 60.40 62.60 65.00 69.90 73.50 74.80 74.80 100.00 99.80 99.93 99.56 99.51 99.74 99.33 99.31 99.35 99.49 99.53 99.39 99.50 99.52 99.24 9 49.22 99.34 99.29 99.33 99.40 99.63 99.28 99.34 99.37 99.29 99.44 99.49 99.31 99.48 99.47 99.52 99.52 99.42 99.46 99.51 99.65 99.32 99.51 99.34 99.54 99.51 99.70 99.67 99.8(7 99.24 99.24 99.34 99.30 99.36 99.40 99.63 99.39 99.35 99.37 99.39 99.44 99.49 99.37 99.48 99.47 99.52 99.52 99.45 99.46 SIRU SIRU SIRU SIRU SIRU SISA SISA SICO SleD SICD SIca COS! COS I COS I eORU eORU eORU eORU eDRU CORU eDRU eORU eORU eORU eORU eORU CORU eORU CDRU eORU CORU eORU CORU SIca SICD SISA SIca SIca SISA SISA SISA 8ISA SISA SISA D-23 LEi HEADPIN GB LB HEADPIN LWE RWE GS RS HEADPIN J~B HEADPIN - ,~ - ._------"----------------------------------------------------- (~ppend i x Table D-18.Cross section profile of Passage Reach IXR in 81ol.lgh SA OC't:ot:H~r 7,1984., ============================================================ RELATIVE STATION ELEVATION WSEL (of t)<f t)(f t)SUBSTRATE COMMENTS ---_._------------------_._--------------------------- 0.00 100.00 SILG LB HEADPIN 0.00 99.81 SILG GB LB HEADPIN L60 99.59 LGSI 4.70 99.64 SILG r--.8.50 99.49 LGSG 11.70 99.26 LGSG 15.40 99.55 LGSe 17.50 99.57 LGSe-20.00 99.36 LGSG 22.80 99.46 LGSG 26.20 99.29 LGSG ~30.00 99.52 LGRU 31.90 99.56 LGRU 34.20 99.56 LGRU,....35.30 99.34 99.34 LGRU LWE 37.00 99.37 99.37 LGRU 38.00 99.32 99.34 LGRU-:39.00 99.46 99.46 LGRU 40.70 99.35 99 ..35 LGRU 41.90 99.43 99.43 LGRU 43.70 99.46 99.46 LGRU ~45.10 99.28 99.35 RUCa 49.00 99.32 99.34 HUCO 50.30 99.48 99.48 RUC·D-53.2()99.34 99.35 RUCD 57.30 99.42 99.42 RUCD 59.20 99.49 99.49 RUeD-62.00 99.35 99.35 RUCD RWE 63.50 99.56 RueD 67.00 99.58 RUCa 69.70 99.47 RueD 71.80 99.57 RUCa 74.00 99.66 RUCD 74.70 99.38 99.38 RUCa LWE ~76.80 99.56 99.56 RueD 78.50 99.47 99.47 RUea 81.60 99.32 99.37 RUea ~83.20 99.38 99.39 RUCD 84.30 99.53 99.53 RueD R~JE 87.00 99.65 RueD-89.50 99.66 RueD 9.2.50 99.42 Ruca 93.1)0 99.18 99.18 RUCO LWE 94.10 99.36 99.36 Ruea '1'5.10 99.05 99.18 RueD --------------------------------------------------~--------- Appendix Table 0-18.Continued. ============================================================ -. RELATIVE STf.''-lTION ELEVATION WSEL. (-f 't )<ft)(f t)SUBSTRATE -----------------,--------------- 96.:LO 99.18 99.19 RUeD 98.00 99.19 99.19 Ruea 98.70 99.18 99.18 SISA 100.(lO 99.73 SISA 101.00 10Q.18 SISA 101.90 100.51 srSA 101.90 100.78 SISA COI"WIEl'llTS RWE GB REI HEADPIN RB HEADPIN - 0-25 Appendix Table D-19.Cross section profile of Passage Reach XR in Slough SA,October 7,1984. ============================================================ - - - RELATIVE STATION ELEVATION WSEL (f t)(f t)(f t)SUBSTRf'.)TE ---------------_._---------------- 0.(1)100.(JO RUea 0.00 99.83 RUea 1.00 Sl9.87 RUea 2.00 100.01 RUeO 4.90 100.04 RUea 6.40 99.79 RUea 7.90 99.73 Ruea 9.20 99.66 RUea 10.90 99.79 RUea 14.50 C~9.82 RUea 16.70 99.67 RUeO 18.50 99.51 RUeD 19.50 99.47 RUeO 21.50 99.53 RUea 22.60 99.28 RueD 23.l ?0 99.57 Rueo 25.60 99.79 RueD 26.70 99.89 Ruea 28.70 100.12 CaBO 30.50 100.20 caBO 32.50 100.10 CaBO 33.90 99.83 caBO 33.90 100.01 CaBO COMMENTS LB HEADPIN GB LB HEADPIN BE RB HEADP I 1'.1 RB HEADPIN D-26 ---------------------------*~-------------------------------- Appendix Table 0-20.r.:,'"oss section profile of Pa.ssage Reach IV in 510Llgh 9,September 22,)1984. ============================================================ RELATIVE 5T~~TIOI\I ELEVATION WSEL (ft)(H:.)(f't)SUBSTRATE COl"'lMENTS ------------------------------------------~---------- 0.00 100.00 SlSA LB HEADPIN 0.00 99.73 SlSA GB LB HEADPIN 2.50 99.07 SlSA 10.20 99.36 srSA 42.00 99.51 SISA 57.70 99.07 SlSA 62.70 99.30 SlSA 74.90 99.33 SlSA 91.30 98.98 SlSA 94.3t)98.86 98.86 SlSA LWE 99.40 98.73 98.86 SlSA 104.80 98.74 98.87 SlSA ~ 114.30 98.76 98.87 SlSA 122.00 98.85 98.85 SlSA 124.~50 98.84 98.84 SlSA 126.60 98.69 98.86 srSA 132.60 98.72 98.88 SlSA 138.00 98.57 98.87 SlSA 141.20 98.45 98.86 SlSA 145.80 98.57 98.87 srSA 151.10 98.64 98.86 SlSA 153.50 98.62 98.87 SlSA ~ 156.70 98.68 98.86 SlSA 160.80 98.65 98.86 SlSA 163.00 98.55 98.86 SlSA ~, 165.30 98.52 98.86 SlSA 166.30 98.54 98.86 SISA 168.00 98.69 98.86 SISA ~ 169.50 98.86 98.86 SlSA RWE 170.50 99.1)4 SISA 173.20 100.49 SISA 174.20 100.79 VEG GB REI HEADPIN 1'74.20 101.10 VEG RB HEADPIN ~ ------------------------------------------------------------ 0-27 - Appendix Table D-21.Cross section profile of Passage Reach V in Slough 9,September 22,1984. ======================================================:====== RELATIVE STATION ELEVATION WSEL Cft)eft)Cft)SUBSTRATE COMMENTS 'r-' - .- 0 •.00 0.00 10.00 32.00 49.00 53.60 61.00 67.20 69.80 71.20 73.20 74.40 76.20 76.50 77.20 78.30 78.50 79.10 79.90 81.00 81.40 81.9() 82.80 83.70 84.00 84.50 85.50 86.90 88.50 90.30 92.00 95.00 97.90 101.00 109.00 119.00 136.00 138.60 140.20 141.8(1 145.00 150.50 156.00 161.00 168.20 173.20 173.20 100.00 99.84 98.57 97.16 95.74 95.10 94.74 94.42 94.20 94.06 93.94 93.83 93.86 94.01 93.82 93.72 94.29 93.73 9~~.66 93.66 93.91 93.72 93.77 93.90 94.05 93.94 94.09 94.14 94.19 94.21 94.37 94.47 94.83 95.19 95.71 95.74 94.90 94.77 94.83 94.90 95.01 95.17 95.18 96.14 (16.97 97.50 97.58 94.06 94.07 94.07 94.08 94.07 94.05 94.08 94.32 94.09 94.09 94.08 94.11 94.10 94.09 94.08 94.09 94.09 94.09 94.90 94.93 94.92 94.90 SlSA SlSA LGCO SILG SACO LGSG LGSG LGSG LGSG LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU Ruca RUCO RUCO Ruca Rueo RUCO Rueo Ruea RueD SIRU SlRU SIRU SISA SISA SILG SlLG SILS SlSA SlSA ·SlSA SISA SISA SlSA SlSA SlSA D-28 LB HEADPIN BE LB HEADPIN LWE RWE LWE SEEPAGE 14REA RWE SEEPAGE AF~EA GB RB HEADPIN RB HEf-.)DPIN Appendix Table D-22.Cross section profile of Passage Reach I in Slough9A,October 8~1984. ============================================================ RELATI\,IE STATION ELEVATION WSEL Cft)Cft)Cft)SUBSTRATE COMMENTS 0.00 0.00 3.00 6.60 9.40 10.50 11.80 12.40 13.00 14.50 15.80 16.70 18.70 20.50 22.40 24.30 25.90 26.50 27.70 29.60 31.00 32.1() :33.2tj 35.00 37.30 39.20 42.50 43.80 45.60 47.80 48.70 52.00 54.50 57.20 61.00 62.20 63.00 64.40 67.00 69.40 71.10 74.00 76.10 77.50 80.20 100.00 99.81 99.98 99.90 99.80 99.95 99.90 99.48 99.57 99.74 99.76 99.39 99.71 99.64 99.50 99.61 99.57 99.44 99.62 99.76 99.66 99.39 99.53 99.62 99.46 99.67 99.63 99.35 99.38 99.50 99.68 99.52 99.53 99.55 99.62 99.28 99.59 99.48 99.51 99.59 99.56 99.47 99.39 99.60 1:;9.53 99.48 99.57 99.74 99.76 99.48 99.71 99.64 99.50 99.61 99.57 99.50 99.62 99.76 99.66 99.49 99."53 99.62 99.46 99.67 99.63 99.41 99.42 99.50 99.68 99.52 99.53 99.55 99.62 99.47 99.59 99.49 99.51 99.59 99.56 99.47 99.44 99.60 99.53 SARU SARU RUeD RueDRuea RueD Ruea RueD Ruea RueD F~ueo RueD Ruca RUCD RueD RueD Ruea RUCD RueD Ruea RueD Ruea Ruea RueD Ruea RueD RueD Ruea RUCD RueD Ruea Ruea Ruca Ruea Ruea RueD Ruea Ruea RueD Ruea Ruea Ruea Ruea RueD RueD 0-29 LB HEADPIN GB LB HEADF'IN - - Appendix Table D-22.Continued. ======~===================================================== ...- ..... I~ RELATIVE STATION ELEVATION WSEL (f t)(·f t)(f 't)SUBSTRATE ------------------_.._------------ 82.20 99.48 99.49 RUeO 84.50 99.53 99.53 RUCa 88.00 99.55 99.55 RUea 89.50 99.48 99.49 RUea 92.50 99.42 99.49 RUeO 94.50 99.49 99.49 RUea 97.70 99.48 99.48 RUCD 99.10 99.53 99.53 RUea 101.20 99.59 99.59 RUCD 104.00 99.48 99.48 RUeO 106.10 99.76 RUea 109.50 99.62 RUea 113.(lO 100.03 RUeD 117.00 100.43 RUea 120.00 100.36 t'::UCO 122.70 1 (H).29 RUea 122.70 100.39 RueD COMMENTS RWE GB RB HE?~DF'IN RB HEADPIN 0-30 -----~--------------------~-------------------------~---------. Appelidi :~Table t)--23.Cross section profile of Passage Re.:~c:h I I in 81ol,lgh 9A,Septembel"23,1984. ============================================================= RELATIVE STATION ELEVATION WSEL (f t)(f t)(ft)SUBSTf:;:?HE COI'1MENTS -----------------------------------------------------~ 0.00 100.00 SISA LB HEADPIN c).00 99.93 SrSA GB LEt HEADPIN 14.00 96.91 SISA 22.60 96.63 SICO 38.40 96.23 SICO 45.00 93m62 SICa 50.40 95.06 SISA 52.50 94.96 SISA 56.00 94.95 SISA 61.30 95.18 SlSA 64.60 95.11 SISA 66.10 94.98 SILS 67.30 94.83 94.83 LGSG Lv.JE ~ 68.30 94.76 94.84 L.GSG 69.50 94.64 94.84 i..GSG 71.30 94.55 94.84 LGSS 73.40 94.51 94.85 LGSG 74.20 94.56 94.84 LGSG 75.40 94.47 94.85 lGSS ~ 78.00 94.42 94.83 LGSS 78.80 94.56 94.82 lGSG 81.QO 94.63 94.83 LGSG 8!.80 94.82 lGSG ~94.54 82.80 94.76 94.84 LGRU 83.60 94.83 94.83 lGRU f~WE 84."30 95.01 LGRU -85.80 95.32 lGRU 88.20 95.70 COlG 91.60 96.46 COLG ~ 94.80 96.88 COlS 100.00 97.37 SIlG 105.00 98.33 VEG -108.50 99.30 VEG 110.80 99.76 VEG GB RB HEADPIN 110.80 100.00 VEG RB HEADPIN - - - D-31 Appendi:-:Table 0-24.Cross section prof i 1 e of Passage Reach III in 810Llgh 9A,September 23,1984. ============================================================ RELATIVE STATION ELEVATIO~J WSEL (f -t)(ft)(ft)SUBSTRATE COI'1I'1EI\tTS --------------------...._----------------------------_~ 0.00 100.00 SISA LB HEADPIN 0.00 99.87 SISA G8 LB HEADPIN 3.00 99.47 SISA 14.40 97.30 SISA 20.60 97.28 SISA 30.80 97.26 SILG 35.60 97.29 LGSI 45.10 97.19 LGSI 54.10 96.99 LSSG 60.00 96.61 LGSe 65.00 96.47 LGSG 66.70 96.46 96.46 LGSG LWE 67.50 96.33 96.33 LGSG 68.50 96.23 96.33 LSSG 69.50 96.19 96.32 LSSG 70.00 96.38 96.38 LGSS 70.40 96.17 96.33 LGSG 71.90 96.15 96.33 LGSG 73.10 96.00 96.32 LGSG 74.00 95.95 96.32 LGSG 74.90 95.96 96.36 LGSG 76.00 96.01 96.35 LGSG 77.40 96.09 96.33 LGSG 78.20 96.00 96.28 LGSG 79.80 95.89 96.28 LGSG 81.00 95.96 96.26 LGRU 82.00 96.17 96.27 LGRU 82.50 96.26 96.26 LGRU Rl-JE 83.30 96.51 LGRU 86.30 96.60 LGRU 90.60 96.84 LGRU 94.40 97.24 SIRU 95.70 97.51 SISA 107.00 98.49 SISA 110.10 98.60 SISA 114.30 99.46 SISA GB RB HEADPIN 114.30 99.69 SISA RB HEADPIN 0-32· ------------------~-------------------------------~------------ Appendb:Table 0--25.Cross sec:tion pro·file of Passage r:;:eac:h IV in SloLLgh ~1A ,September 2~3,1984. ===========================================================:='"'"RELATIVE STATION ELEVATION WSEL (f t)(·f t)(f t)8UBSTF~ATE COMMENTS ---------- --------- --------_..._------------------------- 0.00 100.00 SISA LB HE?\DF'IN 0.00 99.87 SISA GEl LB HEADPIN 5.20 98.90 SISA ""'" 7.60 98.59 SISA 12.50 97.73 SILG 16.30 97.71 LGSG 24.00 97.01 LGSe 28.20 96.92 LGSG 31630 96.81 LGSG -34.60 96.47 LGSG 35.70 96.34 LGSG 38.00 96.30 LGSG 38.80 96.16 96.16 LGSG LWE -40.20 96.10 c;'6.20 LGRU 41.10 96.09 96.19 LGRU 1-1-2.30 95.98 96.15 LGRU -42.70 96.03 96.17 LGf:::U 43.40 95.94 96.16 LGRU 44.70 95.83 96.19 LGRU ~, 46.00 95.82 96.22 LGRU 47.20 95.87 96.20 LGRU 48.40 95.78 96.17 LGRU ~ 49.50 95.84 96.16 RUCO 50.40 96.06 96.16 RUCa 51.30 95.94 96.19 RUCD 51.60 96.18 96.18 RUCD 52.10 96.05 96.19 RUeD 53.90 96.17 96.17 LGCD RWE 55.20 96.21 LGCO 56.30 96.34 LGCO 60.00 96.56 LGCO 65.20 96.97 RUCa 69.50 97.29 L.GCD 75.20 97.77 SICO 77.00 97.95 SICD GE RB HEADPIN -77.00 98.12 SICO RB HEADPIN - 0-33 Appendix Table D-26.Cross section profile of Passage Reach V in Slough 9A,September 23,1984. ============================================================ REU·'TIVE STATION ELEVATION WSEL Cft)Cft) Cft)SUBSTRATE COMMENTS r < - ..... 0.00 0.00 24.00 29.10 47.20 57.40 68.20 71.00 74.30 77.70 79.00 80.90 83.10 84.50 87.00 88.20 89.30 91.00 92.50 94.00 95.40 97.00 99.70 100.80 102.90 103.60 104.50 106.00 107.00 107.90 11)9.50 111.20 113.40 114.30 115.90 116.80 117.80 118.50 118.80 120.40 121.00 121.60 122.50 123.90 126.40 100.00 99.82 98.95 96.63 98.19 97.87 97.69 97.46 97.50 97.43 97.40 97.45 97.41 97.32 97.29 97.30 97.40 97.45 97.36 97.19 97.14 97.07 97.07 97.14 97.19 97.23 97.17 97.21 97.41 97.28 97.27 97.19 97.11 97.20 97.24 97.29 97.15 97.40 97.16 97.16 97.27 97.31 97.37 97.41 97.57 97.43 97.46 97.45 97.41 97.41 97.42 97.42 97.40 97.45 97.36 97.38 97.37 97.37 97.38 97.39 97.37 97.39 97.39 97.40 97.41 97.41 97.43 97.44 97.40 97.35 97.34 97.29 97.31 97.40 97.31 97.31 97.32 97.31 VEG VEG SILG LGSG LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGRU LGSG LGSG LGSG LGSG LGSG LGSG LGSe LeSG LGSG LGSG LGSs LGSe LGSG LGSG LGSG LeSe LGSG LGSe LGSG LGSG LeSG Lese LeSG LGSG LGSG LeSG LGSG 0-34 LB HEADPIN GB LB HEADPIN LWE RWE Appendix Table D-26.Continued. ============================================================ ~, STATION (f t) RELATIVE ELEVATION ~.,jSEL (ft)(ft)SUBSTRATE COMMENTS 129.40 135.0C> 139.40 143.00 146.HI 147.90 151.20 153.60 154.90 157.20 162.00 164.80 165.40 167.00 167.00 97.63 97.62 97.36 97.43 97.25 97.20 97.18 96.80 97.09 97.26 97.07 97.35 97.42 97.60 97.81 97.25 97.26 97.18 97.10 97.09 97.26 97.32 97.35 LOSG LGSG LGSG LGCO LGCO LGCO LGCO LGCO LGCO LGCO LGCO LGCO LGCO eORU CORU 0-35 LWE SEEPAGE AREA RWE SEEPAGE AREI~ GB RB HEADPIN RB HEADPIN - - - ----~------------------------------------'-------------------- AppendiH Te."\ble D--27.Crolss section profile of Passage Reach VI in SlOl.lgh C"~A ,October'8,1984. ============================================================ RELATIVE STATION ELEVATION WSEL .'1"'"(f t)(ft)(f t)SUBSTRATE COMMENTS -------------------------------------------_.---------- 0.00 100.00 eOLG LB HEADPIN 0.00 99.82 eOLG GB LB HEADPIN 1.50 99.87 LGSe 3.00 99.82 Rueo 4.30 99.75 RUeD 5.10 99.72 Ruea 5.60 99.53 99.53 RueD LWE 6.60 99.55 99.55 Ruea 7.80 99.48 99.54 RueD 8.50 99.50 99.55 Ruea 9.00 99.52 99.53 RueD 9.70 99.38 99.54 RueD 10.50 99.28 99.54 RUCD 11.40 99.47 99.56 RueD 12.20 99.41 99.54 RueD..-12.50 99.60 99.60 BoeD 13.40 99.52 99.54 BoeD 14.30 99.53 99.53 BOCD 14.80 99.58 99.58 Emeo 15.80 9 c'.49 99.50 Baco 16.70 99.59 99.59 BOCO 18.80 99.65 99.65 Boca 19.00 99.68 99.68 Boca 20.20 99.62 99.62 BOCa 22.00 99.80 99.80 BOCO 23.3{)99.57 99.57 COBO RWE 23.50 99.74 caBO 24.30 99.90 CaBO.-25.30 99.80 caBO 26.50 100.04 COBO 29.50 100.00 Ruea 32.00 100.06 RueD 34.00 100.30 RueD 36.00 100.17 Ruea 37.80 100.36 RueD 40.30 100.29 Ruea GS RB HEADPIN 40.30 100.42 Rueo RB HEADPIN 0-36 ------------------------------------------~--------------~-- Appendi:·:T,:\ble 0-28.Cross section profile of Passage F:each VII in S10Llgh 9A,September 23,1984. =====;======================================================= RELATIVE STATION ELEVATION WSEL (ft)(f t)(f t)SUBSTRATE COMMENTS ~.---------------------------------------------------- O.ClO 100.00 SICD LB HEADPIN 0.00 99.76 SICa GB LB HEADPIN 2.40 99.03 eORU - 5.50 98.45 eORU 6.50 98.01 98.01 RULG LWE 7.40 97.95 98.00 RULG -8.50 97.63 98.04 RULG 8.90 97.95 98.06 RULG 10.00 97.71 98.05 LGF<U -10.80 97.77 98.09 LGRU 11.80 97.84 98.12 LGRU 12.80 97.90 98.10 LGRU 13.70 98.11 98.11 LGRU 14.00 97.89 98.10 LGRU 15.0(J 97.94 98.06 LGRU 16.10 97.87 98.07 LGRU 16.80 97.97 98.12 LGRU 17.60 97.87 98.12 LGRU 19.00 97.88 98.08 LGRU -20.40 98.10 98.10 LGRU RWE 22.00 98.29 LGRU 23e80 98.42 LGRU ""'"26.60 98.30 LGRU 29.90 98.29 LGRU 32.50 98.05 LGBA 35.50 97.96 97.96 SALG LWE SEEPAGE AREA 37.00 97.85 97.98 SALS 38.10 97.96 97.96 SALS RWE SEEPAGE AREA 44.20 98.21 SASI - 47.50 98.21 LGRU 51.70 98.49 LGRU 54.40 98.22 98.22 LGRU LWE SEEPAGE AREA 55.10 98.16 98.23 LGRU 57.30 98.24 98.24 SILG RWE SEEPAGE AREA 59.00 98.47 SILG -62.60 98.88 LGSG 63.60 99.25 LGSG GB RB HEADPIN 63.60 99.37 LGSG RB HEADPIN ~ D-37 Appendix Table D-29.Continued. ============================================================ RELATIVE STATION ELEVATION WSEL (f-t)(f t)(f t)SUBSTRATE------_._------------------------ 82.70 95.45 95.45 RULG 84.50 95.55 RULG 89.80 95.58 RULG 101.90 95.48 RULG 106.80 95.92 RUeD 115.60 95.81 RueD 130.30 96.02 RueD 133.30 95.75 136.5<J 97.00 140.70 99.72 145.70 98.93 145.70 99.11 COMMENTS R\.<JE -, LOG PILE LOG PILE LOG PILE LOG PILE,GB RB HEADF'II\I ~ LOG PILE,RB HEADPIN ""'" 0-39 ---------_._-----~--------------------------------------------- Appendi :"Table D-30.Cross sec:tion profile of Passage F:eac:h IX in SloLlgh 9A,September 23,1984. ============================================================ RELATIVE ST/~TION ELEVATION WSEL (ft)(f t)(f t)SUBSTF:ATE COMMENTS ----------_._---------_..---------_..----------~---~_.~-~--- 0.00 100.00 SISA LEI HEADPIN 0.00 99.87 SISA GB LB HEADPIN 3.00 99.20 SISA 7.10 99.03 SISA 10.30 98.50 SILG "i='16.10 98.17 LGSe 22.70 97.98 LGSe 27.00 97.75 LGSG rP~28.40 97.64 97.64 LGSG LWE 28.90 97.58 en.65 LGSG 30.:-;W 97.65 97.65 LGSG 31.70 97.50 97.61 LOSG 32.80 97.55 97.60 LGSG 33.50 97.60 97.60 RULG 34.50 97.78 97.78 RULG 36.00 97.58 97.58 RULG 36.80 97.52 97.57 RULG 38.20 97.47 97.57 RULG 39.90 97.56 97.56 RULG 41.70 97.58 9'7.58 RULG 43.00 97.58 97.58 RULG 44.20 97.44 97.56 RULG 45.00 971333 97.55 RULG 45.90 97.28 97.57 RULG 46.40 97.37 97.56 RULG 47.00 97.20 9'7.56 RULG 47.70 97.33 97.55 RULG 48.60 97.33 97.54 RULG 49.80 97.43 97.59 RULG 50.80 97.45 97.61 RULG 51.70 97.51 97.60 RULG 53.00 97.61 97.61 RULG 54.30 97.65 97.65 RULG 55.80 97.65 97.65 RULG 57.40 97.54 9'7.65 RULG 60.00 97.64 97.64 RULG F~WE 61.20 97.72 RULG 64.60 97.98 I=\ULG 68.60 97.96 RULG GB RB HEADPIN 68.60 98.10 RULG RB HEADPIl\I - D-40 ============================================================ Appendix Table D-31.Cross section profile of Passage Reach X in Slough 9A,October 8,1984. STATION (ft) RELATIVE ELEVATIOI\I vJSEL (ft)(ft)SUBSTRATE COMMENTS """ - 0.00 0.00 2.00 3.90 4.80 5.90 7.50 8.70 11.20 12.60 13.20 14.20 15.00 16.50 17.40 19.70 20.50 20.90 25.00 27.00 28.00 29.20 29.90 31.40 32.3() 33.at) 35.90 37.30 39.40 41.00 42.00 44.50 47.00 48.50 51.40 53.10 54.00 55.50 60.00 65.50 66.00 67.00 67.00 100.00 99.88 99.50 99.44 100.01 99.33 99.41 99.37 99.45 99.21 99.32 99.16 99.60 99.31 99.42 99.33 99.24 99.44 99.25 99.27 99.22 99.35 ·99.26 99.08 99.06 99.15 99.29 99.30 99.28 99.45 99.20 99.51 99.45 99.:34 99.64 99.39 99.47 99.88 98.95 98.87 99.19 100.10 100.47 100.60 99.33 99.41 99.37 99.45 99.31 99.33 99.26 99.60 99.31 99.42 99.33 99.27 99.44 99.25 99.27 99.22 99.35 99.26 99.14 99.15 99.15 99.29 99.30 99.28 99.45 99.20 SISA SlSA LGSG LGSG LGSe LGSe LGSG LGSG eORU eORU eORU eORU eORU eORU eORU CORU eORU eORU eORU eORU eORU eORU CORU CORU eORU eORU eORU eORU eORU eORU Boeo BOCa Eioeo BOCa Boeo Boca BOCO BOCO SlSA SISA SlSA SlSA SlBA SlSA 0-41 LEI HEADPIN GEl LB HEADPIN LWE RWE GE RB HEf~DP I N RB HEADPIN ..". "..., ------------------------------------------------------------ AppendiJ.:Table 0-32-_Cross section profile o·f P<3,ssage Reach XI in Slough 9A,October 8,1984. ============================================================ RELATIVE STATION ELEVATION WSEL (f t)(ft) (ft)SUBSTR?HE COMMENTS ----------------------------------------------------"""0.00 100.00 SASG LB HEADPIN 0.00 99.92 SASG GB LB HEI·\DF'IN 2.50 99.92 SASG "~4.70 99.72 BOLS 6.70 99.78 BOLG 8.80 99.56 BOLG 11.10 99.80 BOLG 13.50 99.63 SOLS 14.70 99.62 BOLG 16.90 99.37 RULG 17.70 99.45 RULG 19.30 99.81 RULS 20.80 99.38 RULG 21.60 99.71 RULG 23.60 99.16 RULG 26.20 99.28 RULG 28.30 99.22 RULG 29.40 99.54 BOCa 32.00 99.43 BOCD 33.70 99.46 BOeO 34.10 99.21 99.21 RueD LWE 35.00 99.28 99.28 RueD 36.00 99.07 99.20 RueD 36.60 99.25 99.25 Rueo 38.00 99.26 99.26 RueD 38.70 99.08 99.21 LGRU 39.40 99.05 99.20 "LGRU 40.30 99.10 99.20 LGRU 40.70 1..?9.26 99.26 LGRU 42.30 99.35 99.35 .COLG 43.10 99.31 99.31 COLG 44.70 99.42 99.42 eOLG 45.20 199.24 99.24 COLS RWE 46.70 99.45 COLG 48.90 99.43 RULG 50.8e)99.40 RULG 52.60 99.47 RULG 53.60 99.38 RULG 56.0t)99.45 RULG I"""59.90 99.49 RULG 63.00 99.54 RULG 65.00 99.55 RULG 67.10 99.37 RULG 69.50 99.31 SISA 72.50 99.42 SlSA 75.50 99.72 SISA 77.20 100.15 SISA GEl REl HE(~DPIN 7"7.20 100.28 SISA f~B HEADPIN --------~-------------------------------_._------------------ Appendix Table D-33.Cross section profile of Passage Reach I in Slough 11,October 18,1984. ============================================================ RELATIVE STATION ELEVATION WSEL (ft)(ft)(ft)SUBSTRATE COMMENTS 0.00 0.00 8.00 17.()() 20.60 28.00 3()B 30 32.70 34.40 35.30 36.30 37.90 39.60 41.00 42.70 44.90 45.30 47.50 48.30 50.00 51.80 53.00 56.50 59.30 63.50 65.00 66.70 68.80 71.00 72.80 74.50 76.80 79.80 85.00 86.20 90.40 92.50 94.40 94.40 100.00 99.77 98.69 98.30 98.21 98.07 97.96 97.80 97.64 97.71 97.62 97.74 97.81 97.95 97.98 97.99 97e93 97.77 97.84 97.72 97.57 lY8.03 98.10 98.07 97.55 97.49 97.37 97.55 97.65 97.55 97.46 97.66 97.68 97.71 97.79 97.87 98.14 98.09 99.43 97.80 97.80 97.81 97.81 97.76 97.81 97.95 97.98 97.99 97.93 97.91 97.90 97.91 97.57 98.03 98.10 98.07 97.55 97.58 97.57 97.64 97.65 97.68 t?7.64 97.71 97.71 97.71 SGLS SGLS SISA SlSA SISG SILG SILS LGSe LGSe Lsse LeSe LGSe LGSS Lese LGSS Lese LGSG LGSG LGSe LSSG LGSG LGSG LGSG LGSe LGSG LGSG LGSS LEse LGSS LESG LSSG LGSG SGSI 5GSI SGSI LGSe SGSI SGsr SGSI 0-43 LB HEADPIN GB LB HEADPIN LWE I::::WE GE RB HEADPIN REI HEADPIN -------------------------------------------------------_.~---- Appendi ).~Table D-34.Cross sec:tion pro'file o·f Pa.ssage F~eac:h III in 810Llgh 11,September 21,1984. ============================================================ I::;:ELATIVE STATION ELEVATION WSEL (-f t)<ft)(f t)SUBSTRATE COMMEl\ITS ..._------..._-------------------------------------------- G.O!)100.00 VEG LB HEADPIN 0.00 99.87 VE.e GE LE.~j.-j Ef'.)D F'I 1'.1 12.70 1.'79 •.95 SILG 23.00 99.86 SILG 31.00 <79.16 SILe 33.3(l 98.79 98.79 LGSS U~E 34.:30 98.71 98.80 LGSG 36.00 98.65 98.79 LGSS ~37.10 98.54 98.79 LSSG 38.2t)98.61 98.77 LGSG 38.70 98.69 98.78 LGSG 39.60 98.50 98.78 LGSS 42.00 98.63 98.83 Lsse 43.00 98.50 98.80 LGSe 44.00 98.65 98.80 LGSG 46.10 98.64 98.79 LGSG 49.40 98.64 98.83 LGSG 51.00 98.57 98.79 LGSG ""'"53.20 98.70 98.80 LGSe 57.50 98.65 98.81 LGSe 59.40 98.67 98.81 LGSS f"-60.50 98.76 98.80 LGSS 62.50 98.66.98.76 LGSe 64.40 98.59 98.72 LGSS-65.610 98.47 98.67 LGSG 66.10 98.60 98.67 LGSe 67.00 98.47 98.67 LGSS 67.70 98.56 98.64 LGRU f"-69.70 98.61 98.61 LGSG R~IJE\ 71.80 99.19 LGSe 74.'70 98.91 LGSe 75.70 98.78 LGSG 78.00 98.66 LGSG 81.80 98.85 LGSS 90.80 98.87 RUSI 100.00 98.93 RUSI 103.60 99.09 RUSI GB REi HE~\DF'IN --103.60 99.26 RUSI RB HEADF'IN :: --------~----------------------------------------------_..._--- 0-44 i I I ------------------~--------------------~---------------------~ Appendb:Tabls 0-35.Cross section prof i 1 e of Passage Reach IV in Slough 11 ,Sep"t:ember 21,1984. ============================================================ RELATIVE STATION ELEVATION WSEL (f t.)(f t)(ft)SUBSTRATE COMI"IENTS ~----------------------------------------------------- 0.00 100.00 VEG LB HEADPIN 0.00 99.74 VEG GB LB HEADPIN 6.00 99.81 VEG ~ 9.90 99.71 SILG 13.70 99.64 99.64 SILS LWE 16.80 99.53 99.63 SILG ~ 18.30 99.36 99.64 LGRU 19.80 99.27 99.67 LGRU 2L50 99.28 99.65 LGRU 22.90 99.39 99.62 LGRU 24.50 99.50 99.68 SISG 27.00 99.47 99.62 SISG 29.40 99.55 99.65 SISG 30.20 99.73 99.73 SISe 30.80 99.59 99.69 LGSO 31.90 99.62 99.68 LGSe ..... 32.50 99.75 99.75 LOSG 33.20 99.58 99.70 LGSG 35e 3()99.60 99.72 LGRU ~ 38.00 99.62 99.72 LGRU 39.70 99.72 99.72 LGRU RWE 40.80 99.80 VEG ~ 43.00 99.92 VEG 45.80 99.87 VEG 50.40 99.83 VEG GB RB HEADPIN 50.40 99.99 VEG RB HEADPIN 0-45 - ----------~---------------------~--------------------------- Appendix Table D-36.Cross section profil~of Passage Reach V in Slough 11,September 21,1984. ============================================================ I={ELATIVE STATION ELEVATION WSEL Cft)Cft)Cft)SUBSTRATE COMMENTS ..... 0.00 O.(lO 4.90 8.20 14.20 22.20 23.70 25.10 26.80 27.70 28.70 29.40 29.70 30.50 31.50 32.50 34.00 35.00 36.20 36.70 37.10 39.30 39.70 40.00 40.90 41.50 42.6() 43.40 43.70 45.50 46.10 46.60 46.90 49.80 52.20 53.30 53.70 53.90 56.00 57.00 58.00 58.50 63.80 64.60 65.50 100.00 99.78 99.93 99.69 99.70 99.80 100.06 99.86 99.72 99.87 99.89 99.78 1()0.01 99.69 100.00 99.75 99.61 99.66 99.70 99.83 99.72 99.67 99.87 99.68 99.63 99.57 99.57 99.66 99.81 99.70 99.78 100.11 99.80 99.55 99.72 99.64 100.03 99.89 99.98 99.88 99.86 100.02 100.04 99.92 99.89 99.86 99.86 99.87 99.89 99.88 100.01 99.89 100.00 99.75 99.79 99.75 99.82 99.83 99.82 99.83 99.87 99.87 99.85 99.87 99.87 99.90 99.87 99.85 99.84 100.11 99.82 99.81 99.89 99.89 100.03 99.89 99.98 99.98 99.96 100.02 100.04 100.01 100.01 LSSG' L6SG LGSG LGSG LGRU LGRU LGRU RULG RULG RULG RULG RULG RULG RULG RULG RULG RUCD RUCD RUeD Ruea Ruea Ruea RueD Ruea LGRU LGRU LGRU L6RU Ruca Ruea Ruea RueD r~uCD Ruea ~~uea RUCD Ruea RueD RueD RueD RueD RUCD RueD RueD Rueo 0-46 LEt HEADPIN GB LEt HEADF'I l\l U.JE Appendix Table D-36.Continued. ============================================================ RELATIVE STATIOI'~ELEVATION WSEL (ft)(f t)(f t)SUE1STR~4TE -------------------------------- 66.20 99.99 99.99 lGRU 67.20 100.09 LGRU 69.70 100.16 lGRU 75.00 100.16 LGRU 81.00 100.20 lGRU 81.00 99.89 LGRU COMMENTS GEl REI HEADPIN RB HEADPIN 0-47 - Appendi :.{Table 0-37.CI-OSS section proof i 1 e of F:'assage F~each VI in Slough 11,September 21,1984. ===============~-::=.:::==============:::==:===::::=============::======:::::::.:::::=- RELATIVE STATION ELEVAT 101\1 WSEL r-(f t)(f t)(of t)SUBSTHATE C01'1MENT~'3 I ------_.._---"..--------.._--------_.....--_.~-_.._~----~-..~_._~..._-- 0.00 100.00 LGCO LB HEADPIN 0.00 99.70 LGCO BE LE HEADPIN 11.80 99.16 LGCO 21.70 98.87 LGRU 24.30 98.77 98.77 LGRU L~JE 26.00 98.64 98.77 LGRU 27.00 98.59 98.77 LGRU 27.60 98.89 98.89 LGRU 28.40 98.63 98.75 LGRU 29.3<)98.55 98.74 LGRU 30.50 98.67 98.75 LGRU 31.10 98.56 98.79 LGRU 33.2()98.48 98.78 LGRU 34.30 98.37 98.76 LGRU 35.::;W 1.78.51 98.77 LGRU 37.50 .98.57 98.80 LGRU 39.30 98.62 98.79 LGRU 40.70 98.68 98.79 LGRU 41.10 98.88 98.88 LGRU 42.00 98.64 98.74 LGRU 42.80 98.86 98.86 LGRU 43.70 98.62 98.73 LGRU 44.80 98.72 98.75 RULG 45.60 98.60 98.70 RULG 46.60 98.64 98.71 RULG 47.30 98.70 98.70 RULG R~'JE 48.20 (;'8.83 I~ULG 51.70 98.93 F:ULG 54.30 98.85 RULG 69.00 99.10 RULG 82.80 98.79 VEG 84.00 99.74 VEG 85.10 99.80 VEG GEl RB HEADF'II'1 85.10 99.92 VEG F~B HEADF'IN r I -------~--------~----_.----------------~~.._._---_.__.-_._------_._-- 0-48 ~_______~__~__.'__~________~___~____•_____________•__~_"~_N_'~"__~_"_~_~...., Appendi:·:Ta.ble D--38.Cross section pl--of i 1 e of P,assage f,each VII in 810LIgh 11,S(*!p t emb f..'i'r 21 ,1984. ============================================================= RELATIVE STATION ELEVATIlJN WSEL (f t)(·H:)(f t)SUE~STRATE COl"'IMENTS -_._-------------------------------------------_.__._._------- 0.00 100.00 LGRU LB HEADP I j\.t O.(l(l 99.77 LGRU GEl LB HEi~DPIN 2.40 99.68 LGRU 9.60 99.14 LGRU 12.90 98.17 LGRU 16.90 98.93 98.93 LGSS LWE ~ 17.30 98.73 98.89 LOSG 18.00 98.71 98.90 LGSS 18.40 98.80 98.89 LGSG ~ 18.80 98.89 98.89 LGSG 19.40 99.25 99.25 HUeD 20.50 99.20 99.20 RueD 21.00 99.04 99.04 RueD 23.60 99.08 9 r7.08 RueD 27.40 99.10 99.10 RueD 28.80 98.96 98.96 RueD 30.00 98.90 98.95 Rueo 30.60 99.13 99.13 RueD 31.60 98.89 98.95 RueD 32.30 98.96 98.96 Ruea 33.50 98.80 98.80 RueD 34.00 98.65 98.84 LGRU """"34.50 98.57 98.87 LGRU 35.80 98.89 98.89 LGRU RWE 36.40 99.22 Ruea 37.50 99.07 RUCD 41.90 99.30 LGCO 49.50 99.42 LGCD 53.00 99.25 LGCO 64.00 99.63 LGCD GB REI HEADPIN 64.00 99.76 LGeO F~B HEADI::'!N ~ ~, 0-49 F'"------------------------------------------------------------- Appendi :.,Tc..~ble D-39.CI""OSS section prof i 1 e of F'assage Rec:o\ch I in Upper Side Channel 11,September 21,1984. ===============:============================================= RELATIVE STAT I 01\1 ELEVATION ~JSEL (ft)(f t)(f t)SUBSTRATE COMMENTS ---------------_.....-----------.._-----~-----------_.._------ 0.00 1(1)'.00 VEG LB HEADPIN 0.00 99.76 VEG GB LB HEI~DF'I l\l 4.00 98.95 VEG 10.00 98.39 SICa 19.50 97.68 eaao-24.20 97.66 CaBO 27.80 98.27 CaBO 38.00 97.52 caBO F 41.30 96.83 96.83 caBO LWE 43.10 96.62 96.81 CaBO 45.50 96.60 96.81 COBO I"'"47.20 96.83 96.83 caBO 48.41)96.88 96.88 Ruea 51.60 96.66 96.66 RueD 53.70 96.47 96.66 RueD 55.50 96.66 96.66 RueD 56.00 96.99 96.99 RueD 58.60 96.69 96.69 RueD 59.80 96.50 96.69 RUCO 60.80 96.69 96.69 RueD 61.70 96.96 96.96 RueD 63.30 96.69 96.69 Ruca 64.50 96.56 96.68 RueD 66.9(1 96.48 96.66 Ruca 68.80 96.45 96.67 RUCO 69.00 96.69 96.69 RueD 70.30 96.54 96.68 RueD 71.80 96.77 96.77 RUCD 72.10 96.50 96.67 RueD 74.00 96.33 96.67 RueD 76.30 96.31 96.68 RueD 78.00 96.57 96.67 RueD 79.40 96.44 96.65 RueD 80.30 96.33 96.65 RueD 81.90 96.30 96.66 Ruca 83.40 96.50 96.64 RueD 84.50 96.65 96.65 Ruea 85.80 96.45 96.67 RueD 87.70 96.38 96.68 RueD 8S.20 96.25 96.66 RueD 89.50 96.42 96.66 RueD F'"91.(II)96.47 96.66 RueD 91.30 96.69 96.69 RueD 91.80 96.51 96.66 RueD-95.50 96.62 96.62 RueD RWE ------------~--------_._-----------_._------------------~------- 0-50 ============================================================ Appendix Table D-39.Continued. RELA'rIVE STATION ELEVATION WSEL (·f t )(f t)(f t)SUBSTRATE -----_..._---------------------...,.---- 97.00 f.'16.75 96.75 RUeD 101.00 eT6.68 96.68 RueD 108.00 96.57 96.57 RUCD 109.50 97.25 97.25 RueD 110.50 96.66 96.66 RUeO 113.40 96.76 96.76 RueD 118.cio 96.58 96.77 RUeO 119.00 96.75 96.75 RueD 123.10 97.07 97.07 RueD 129.80 97.02 97.02 RueD 144.00 97.26 97.26 RueD 158.60 97.48 97.48 I~UeD 169.00 96.70 96.70 Rueo 180.00 98.82 VEG 183.40 99.43 VEG 183.40 1.,9.68 VEG COMMENTS SEEPAGE AREA SEEPAGE AHE(.-1 BB F~B HEf~DF'I N RB HEADPIN - 0-51 .....------------------------------------------------------_._----- Appendi :.(Table 0-40.Cross section pro'f i 1e of F'assage I::::each VI in 81ol.Lgh 19,October 17,1984. ~"""============================================================ RELATIVE STATION ELEVATION WSEL (ft)(ft) (ft)SUBSTR{4TE COMMENTS ---------------------------------------------------- 0.00 100.00 SASI LB HEADPIN 0.00 99.90 SASI GB LB HEADPIN 4.00 99.42 SASl 6.00 99.26 SASI 7.10 99.04 99.04 SASI LWE 8.00 98.97 99.07 SASI 9.00 98.88 99.06 SASI 10.00 98.81 99.06 SAS! 10.80 98.76 99.06 SASI 11.30 98.88 99.06 SASI 12.10 99.07 99.07 SASI F:;:WE-13.00 99.36 SASI 14.80 100.16 SISA 16.00 100.36 VEG GB RB HEADPIN 16.00 100.46 VEG RB /·-lE{4DP I N 0-52 Appendix Table D-41.Cross section profile of Passage Reach VII in Slough 19,October 17,1984. ============================================================ RELATIVE STATION ELEVATION WSEL (oft)(·f·t>(oft)SUBSTRATE COI"'Il"'IENTS ..... 0.00 0.00 8.40 11.80 121120 12.40 12.80 14.0Q 15.20 16.00 17.60 18.70 19.70 20.20 21.40 28.60 32.5() 32.50 100.00 99.87 98.48 98.35 tr8.19 98.11 98.36 98.38 98.25 <78.30 98.21 98.07 98.38 98.19 98.55 98.78 99.59 99.68 98.19 98.19 98.36 98.38 98.25 98.30 98.21 98.19 98.38 98.19 SASI SASI SASI SASI SASI SASI SASI SASI SASI SASI SASI LGRU LSnU SABO SASI SASI SASI SASI 0-53 LB HEADPIN GB LB HEADF'I N L~JE GB REI HEADPIN RB HEADPIN - - - -, Appendix Table D-42.Cross section profile of Passage Reach VIII in Slough 19,October 17,1984. ============================================================ RELATIVE STATION ELEVATION WSEL. (f t)(oft)(f t)SUBSTRATE ---------....._-_.._-------------------- 0.00 100.00 SISA 0.00 98.84 SISA 0.40 98.42 SlSA 2.00 98.32 SlSA 3.40 98.::?8 LGSA 4.20 98.62 LGSA 6.00 98.43 LGSA 7.00 98.47 LGSG .....8.00 98.46 LGSG 9.00 98.47 L.GSG 9.90 98.58 LGSe 11.30 99.11 L.GSG 11.30 99.20 LGSe - COMMENTS LB HEADPIN SE L.B HEADPIN GB RE HEADPIN R8 HE?'OPIN 0-54 Appendix Table D-43.Cross section profile of Passage Reach IX in Slough 19,October 17,1984. =========================================~=================== RELATIVE STATION ELEVf.iTION WSEL (f t)(f t)(f t)SUBSTRATE --------------------_.----_.._----- 0.00 100.00 VEG 0.(1)99.55 VEG 2.00 98.73 SlSA 6.00 98.38 SlSA 8.80 98.48 RUSA 12.00 98.44 RUSA 13.30 98.20 RUSA 14.00 98.00 COSI 14.50 98.12 COSl 15.50 98.12 COSI 16.50 98.27 COSl 17.20 98.01 COSl 18.00 98.09 COSl 19.00 98.06 SlSA 19.80 98.26 SlSA 21.50 98.36 SISA 22.'70 98.58 SlSA 22.70 99.31 SlBA COMMENTS LB HEADPIN GB LB HEADPIN GEl R8 HE(-=iDP I 1\1 RB HEADPIN ~, D-55 - Appendix Table D-44.Cross section profile of Passage Reach r in Slough 20,October 17,1984. ============;=============================================== RELATIVE STATION ELEVATION I,.JJSEL (f t).('ft)(f t)SUBSTRATE ------------_..._----.._------------- 0.00 100.00 SISA 0.00 99.92 SISA 3.00 99.14 SOSA 3.60 99.45 BOSA 4.70 98.65 BOSA 6.20 98.46 eORU 7.00 98.30 eORU 7.6Q 98.09 LGSe 8.50 98.29 LGSG 10.20 98.29 LGSG 11.10 98.34 LGSG 12.80 98.27 LGSe 14.60 98.41 LGSG 16.00 98.55 LGSG 18.20 98.72 LGSA 20.00 9 C].11 SISA 25.00 99.58 SASI 48.00 100.41 SASI 59.00 100.66 SASI 64.50 101.70 SA 64.50 101.77 SA CDt1MENTS LB HEADPIN GB LB HE(.ltDP IN GE RB HEADP Il'-..l RB HEADPIN 0-56 Appendix Table 0-45.Cross se~tion profile of Passage Reach VI in Slough 20,O~tober 17,1984. ============================================================-RELATIVE STATION ELEVATION WSEL (of t)(ft)(f t)SUBSTRATE -------------------------_._---_...... 0.00 100.00 SISA 0.00 99.84 SISA 20.00 99.25 SISA 34.00 98.88 SlSA 43.00 98.67 SALG 50.00 98.41 SALG 55.00 98.45 LGRU 58.80 98.56 LGRU 61.00 98.45 LGRU 62.00 ~i8.60 LGRU 65.00 98.50 LGRU 66.90 ~f8.56 LGRU 68.50 98.49 LGRU 70.70 98.38 LGRU 73.40 98.69 LGRU 75.50 98.61 LGRU 77.90 98.75 LGRU 79.20 98.49 LGRU 80.80 98.81 LGRU 82.50 98.80 LGRU 83.8CI 98.63 CORU 85.30 98.48 eORU 86.90 98.47 SARU 88.50 98.41 SARU 89.50 98.50 SA 91.50 100.58 SASI 92.30 100.70 VEe 92.30 100.75 VEG COMMENTS LB HEADPIN GB LB HEADPIN GB F~B HEADF'I N REI HEADPIN - - 0-57 -. ___________________________________________M ___________________ Appendi l':Table D-46.CI'"OSS section pro·f i 1 e o'f,Passage Reach I in Side Channel 21,October 16,1984. ============================================================ RELATIVE STATION ELEVATION ~IJSEL (f t)(f t)(ft)SUBSTRATE COMMENTS ---------------------------------------------------- 0.00 100.00 LGCO LB HEADPIN 0.00 99.86 LGCO GEl LS HEADPIN 2.00 99.75 LGCO 7.00 99.49 LGCO 9.20 99.33 99.33 SARU LWE 11.00 99.21 99.34 SARU 12.40 99.02 99.33 SARU 13.20 99.08 99.34 SASI-15.00 99.12 99.34 SASI 17.00 99.12 99.35 SASI 19.00 99.04 99.34 SASI 21.00 99.07 99.32 SASIr:-23.00 99.20 99.33 SASI 28.00 99.21 99.33 SASI 30.50 99.40 99.40 SABD 34.20 98.99 99.32 SABO 36.10 99.22 99.31 SABD 38.20 99.47 99.47 SABD 40.20 99.57 99.57 SABD 41.50 99.32 99.32 SABa RWE 46.30 99.67 SABO 48.00 100.31 BOSA 49.50 99.97 aaSA 51.50 100.77 aOSA 55.90 100.63 saSA GB RB HEADPIN 55.90 100.72 aaSA I='<B HEADPIN -------------------------"----------~--------~--------~----~--~-- 0-58 ------------------------------------------------------------ Appendi;{Ta.ble D-47.Cross section prof i 1 f.:?of P'a.ssage Reach II in Side Channel 21,October"16,1984. =============================================================~'fll RELATIVE STATION ELEVATION t~SEL (ft)(ft)(ft)SUBSTRATE COMMENTS -------_.-_.._.._------_._-------------------------------- 0.00 100.00 SASI LB HEADPIN 0.00 99.84 SASI GE LE HEADPIN 3.30 99.40 SASI 30.00 98.20 SASI 49.(l()97.82 SASI 60.00 97.69 SASI ,~ 63.00 97.57 SASI 64.00 97.59 SASI 64.10 97.45 97.45 LGSe LWE 65.40 97.21 97.47 LGSe 67.00 97.24 97.41 LeSG 69.20 97.30 97.48 LGSG 70.50 97.40 97.48 LGSG 72.50 97.29 97.48 LGSG 73.90 97.44 97.49 LGSG 75.50 97.47 97.48 LGSe 77.00 (,,7.54 97.54 LGSG 79.00 97.35 97.50 LGSG 80.50 97.46 97.52 LGSe -82.10 97.44 97.51 LGSG 83.80 97.18 97.50 LGSG 86.10 97.35 97.47 LGRU 88.60 97.48 97.48 LGRU" 90.10 97.44 97.44 LGRU Rl'JE 91.10 97.64 LGRU 94.00 97.61 LGRU ~ 98.90 97.83 LGRU 104.50 97.75 LGSA 111.50 97.88 LGSA ~ 120.80 98.04 SARU GE RE HEADPIN 120.80 98.23 SARU REI HEADPIN - 0-59 -------------------------------------------------_._--------- Appendi:-:Table D-48.Cross section prof i 1 e of Passage Reach III in Side Channel 21,October 16,1984. ============================================================= RELATIVE STATION ELEVATION WSEL (ft)(ft)(f t)SUBSTF::(~TE COMMENTS F""-_.._---------------------_._-------------------------- 0.00 100.00 SISA LB HEADPI"'~ 0.00 99.84 SISA GE LEI HEADPIN 2.00 99.21 SISA 4.00 99.11 SALG 5.80 98.97 LGSA 6.50 98.84 98.84 LGBA LWE 7.60 98.81 98.83 LGSA 9.10 98.81 98.81 LGRU .-..10.90 98.52 98.88 LGRU 12.40 98.49 98.83 LGRU 14.00 98.71 98.79 LGRU 15.80 98.70 98.80 LGf~U 17.30 98.62 98.83 LGF:U 19.50 98.67 98.85 LGRU 20.60 98.78 98.84 LGRU ~22.50 98.79 98.85 caSA 25.50 98.79 98.86 casA 26.70 98.86 98.86 caSA 28.00 98.77 98.85 casA 30.60 98.81 98.84 caSA 33.30 99.03 99.03 caSA-35.50 98.94 98.94 caSA 38.10 98.77 98.77 caSA 39.40 98.79 98.79 caSA RWE 40.40 99.01 SAca 41.70 99.11 SlSA GB REI HEADPIN 41.70 99.18 SASl REI HEADP I 1'·.1 - i""" I 0-60 :I!- ------------------------------------------------------------~ Appendi :.{Table D-49.Cross section profile of Passage Reach IV in Side Channel 21,October 16 ~1984. ============================================================= RELATIVE STATION ELEVATION l&JSEL (of t)(f t)(f t)SUBSTRATE COMMENTS ------_._-----_..__.._-.._---------._------------------------ 0.00 100.00 SlSA LB HEADPIN 0.00 99.85 SISA GB LB HEADPIN .4.00 99.66 SARU 10.20 99.57 99.57 LGSG LWE 12.00 99.44 99.56 LGSG 17.00 99.41 99.47 LGSG -20.50 c'9.44 99.44 LGSG 21.70 99.25 99.35 LGSG 22.4()99.48 99.48 LGSG 24.00 99.23 99.4.1 LGSG 25.70 99.41 99.41 LGSG 26.80 99.09 99.43 LGSG 29.00 99.30 99.37 COLS 31.00 99.27 99.35 COLG 32.3()99.63 99.63 COLG 35.20 99.56 99.56 COLG 36.30 99.28 (79.46 COLG 38.30 99.66 9f~.66 COLG 39.40 99.47 99.51 COLG ~ 42.00 99.61 99.61 COLG 43.00 99.38 99.58 COLG 44.00 99.63 99.63 COLG ~ 46.20 99.41 99.57 COLG 48.00 99.64 99.64 COLG 49.60 99.63 99.63 COLG 51.10 99.09 99.69 COLG 53.00 99.14 99.57 COLG 54.00 99.57 99.57 COLG 55.50 99.48 99.53 COLG -56.50 99.19 99.52 COLG 58.70 99.57 99.57 COLG 60.90 99.36 99.60 COLG 62.00 99.63 99.63 COLG 64.00 99.70 99.70 COLG 66.10 99.45 99.57 RULG ~67.20 99.77 99.77 RULG 70.20 99.40 99.51 RULG 71.70 99.52 99.52 RULG RWE 73.0()99.56 RULG GE RE HEADP-IN 73.00 99.80 RULG RB HEADPIN ------------------------.-_.._.__._---_._-------_._---_..-_._-....._..__..._----- t!-61 -Appendix Table 0-50.Cross section profile of Passage Reach VII in Side Channel 21,October 16,1984. ~============================================================ STATION (·f t) RELATIVE ELEVATION WSEL (ft) (ft)SUBSTRATE COMMENTS .... - ..... - 0.00 0.00 5.50 9.00 13.70 15.40 17.00 20.00 23.00 25.80 29.00 33.20 37.20 39.00 41.10 43.70 45.40 47.90 50.00 53.00 55.40 57.60 60.30 61.00 61.90 65.80 68.30 70.50 72.00 74.00 76.40 78.30 81.50 84.20 86.50 91.70 94.70 97.20 98.10 101.10 102.80 106.50 108.10 It)9.60 111.70 100.00 99.95 99.95 99.76 99.96 99.43 99.55 99.65 99.56 99.33 99.41 99.79 99.53 99.61 99.85 99.29 99.26 99.43 99.48 99.44 99.28 99.52 99.41 99.30 99.54 99.48 99.56· 99.30 99.53 99.62 99.32 99.3q 99.73 99.47 99.54 99.40 99.46 99.50 99.13 99.10 99.53 99.50 99.40 99.20 99.45 99.43 99.55 99.65 99.56 99.42 99.41 99.79 99.53 99.61 99.85 99.29 99.31 99.43 99.48 99.44 99.34 99.52 99.41 99.37 99.54 99.48 99.56 99.42 99.53 99.62 99.39 99.40 99.73 99.47 99.54 99.40 99.46 99.50 99.36 99.35 99.53 99.50 99.40 99.33 99.45 RUSA RUSA RULG RULG RULG RULG RUeD Rueo RueD Rueo RueD RueD RueD RueD RueD RueD RueD RueD RueD Rueo RueD RueD RueD RueD RueD RueD RueD RueD RueD Rueo Rueo Rueo RueD RueD RueD RueD RueD RueD RueD RueD RueD RueD RueD RueD RueD 0-62 LB HEADF'IN GB LB HEADPIN LWE , I I Appendix Table 0-50.Contin~ed. ============================================================ RELATIVE STATION ELEVATION WSEL (ft)(f t)(f t)SUBSTRATE --------------------_.._----------- 115.10 99.4·0 99.40 Rueo 117.70 99.22 99.32 RUeD 119.50 99.40 99.40 Ruea 122.50 99.39 99.39 RueD 125.50 99.51 99.51 RueD 126.70 99.17 99.35 RueD 128.80 99.22 99.34 Ruea 130.20 99.40 99.40 Ruea 134.50 99.52 99.52 RueD 136.20 99.70 99.70 RueD 138.80 99.42 99.42 Ruea 141.20 99.34 99.36 RueD 143.70 99.45 99.45 RueD 146.(H)99.36 99.36 Rueo 147.00 99.76 RueD 153.00 99.80 EDRU 158.00 100.15 SDRU 164.50 100.72 E:CSA 171.00 102.10 SOSA 178.50 101.57 SABD 182.30 102.03 SABO 182.30 102.67 SABD COMMENTS RWE GEt REt HEADPIN RB HEADPIN ""'" - - 0-63 f~ ----------------------~---------------------------------------- Append h:Table 0-51.Cross section profile of Passage F:eac:h 0 VIII in Side Channel 21,Oc:tober 15,1984. ~============================================================== RELATIVE STATION ELEVATION ~IoJSEL r-(of t)<ft)(ft)SUBSTRATE COMMENTS ------------------------------------------------------ 0.00 100.(l<)BORU LB HEADPIN 0.00 99.86 BORU ('3B LB HEADPIN 3.00 100.01 BORU 9.50 100.01 BOSI 16.50 99.73 BOSI 19.60 99.70 BOSI 20.50 99.37 99.37 eORU LWE 22.00 99.57 99.57 eORU 2311 3C)99.37 99.37 eORU 24.60 99.33 99.33 eORU 25.50 99.43 99.43 eORU 27.70 99.43 99.43 eORU 31.00 99.71 99.71 CORU 34.40 99.39 99.39 eORU 36.00 99.12 99.12 eORU 40.20 99.08 99.08 eORU 42.00 98.82 98.94 eORU 44.10 98.91 98.96 CORU 45.00 99.31 99.31 eORU 46.70 98.83 98.98 CORU 48.30·99.11 99.11 CORU 51.00 99.16 91.?16 eORU 52.10 98.91 98.96 eORU 53.00 99.20 99.20 eORU 56.00 99.70 99.70 BOCO 60.60 99.74 99.74 BOCO 67.50 99.67 99.67 BOCD 70.50 99.28 99.28 BOCD-100.05 BOCO74.00 100.05 77.00 99.43 99.43 BOCD 79.70 99.24 99.24 BOCO.....81.10 98.91 99.12 EORU 82.10 99.79 99.79 eORU 84.30 99.56 99.56 BORU 85.10 98.95 99.20 BORU 86.90 99.48 99.48 BORU 89.50 99.33 99.33 BORU 92.50 99.47 99.47 BORU 94.70 99.01 99.14 eoRU 97.00 99.32 99.32 BORU 100.20 99.34 99.34 eORU 102.0Q 99.38 99.38 BORU 103.20 99.Cl<)99.19 BORU 105.50 <"79.27 99.27 BORU 108.50 99.32 99.32 BORU --------------_._---------------------------------------------- 0-64 I II Appendix Table D-51.Continued. ============================================================= - RELATIVE STATION ELEVATION WSEL (·f t)eft)(ft)SUBSTRATE -------------------------------- 110.20 99.41 99.41 BORU 111.50 99.09 99.18 EORU 113.50 99.28 99.28 BORU 115.30 99.37 99.37 BORU 116.50 99.10 9(7'~18 BORU 118.50 99.28 99.28 EORU 119.50 99.19 99.19 COBO 120.00 99.45 COBO 122.00 100.03 COBO 125.00 99.73 CO EO 130.10 99.80 COBO 130.10 99.90 COBO COMMENTS f-iL'IIE GEl RB HEADPIN RB HEADPIN - - -~--------------------------------------~._---_.------._-------~- 0..65 "'""------------------------------------------------------------ Appendi:-:Table D-52.Cross sec:tion profile of Pass.;,~ge I~eac:h IX in Side Channel 21,Oc:tober 16,1984. ==================~===~===================================== RELATIVE STATION ELEVATION WSEL (f t)(ft)(of t)SUBSTHATE COl1MEI\lTS ---------------------------------------------------- 0.00 100.00 SlSA LB HEADPIN 0.00 99.92 SrSA GB LB HEADPIN 10.00 99.29 SISA 25.00 99.04 SISA 37.60 98.32 SISA 43.30 97.30 SlSA 57.00 97.34 SAL6 64.00 97.23 LGSA "....68.40 96.98 L6SA 72.30 96.97 LGSA 76.00 96.98 LGSA 78.00 96.88 LGSA 80.90 96.97 LGSA 84.30 96.96 L6SA 85.70 96.83 96.83 RUSA LWE 88.00 96.86 96.86 RUSA 89.50 96.74 96.83 RUSA 90.80 96.95 96.95 RUSA 92.80 96.92 96.92 RUSA 94.40 96.80 96.80 RUSA 95.30 96.83 96.83 RUSA 96.60 96.46 96.80 LGSG 98.00 96.61 96.81 LGSG 100.10 96.59 96.81 LGSG .-.101.20 96.88 96.88 LGSe 101.80 96.58 96.81 LGSG 104.00 96.64 96.82 LGSG 105.70 96.92 96.92 BaSI 107.90 96.87 96.87 BaSI 109.50 97.00 97.00 BaSI 111.80 96.82 96.82 BOSI RWE 113.10 97.12 BOSI 117.50 97.33 BaSI 121.00 97.79 alSA 127.50 102.47 SlSA GB I~B HEADPIN 127.50 102.56 SlSA RB HEADPIN - 0-66 I I Appendix Table 0-53.Cross section profile of Passage Reach I in Slough 21,October 15,1984. ============================================================ RELATIVE STATION ELEVATION WSEL eft)eft)Cft)SUBSTRATE COMMENTS 0.00 0.00 1.00 7.0(J 13.00 25.40 35.00 44.00 57.50 62.80 63.40 65.00 67.40 69.50 71.70 74.80 78.:::;0 78.90 80.70 81.'60 84.50 86.00 87.10 88.00 89.00 90.20 90.80 95.50 101.50 108.50 118.00 118.00 100.00 917.97 99.76 97.92 97.10 96.67 96.77 96.94 96.91 96.93 96.74 96.63 96.54 96.4'7' 96.59 96.53 96.54 96.43 96.47 96.64 96.55 96.45 96.39 96.32 96.64 96.68 97.21 97.36 97.03 97.05 102.94 102.97 97.10 96.81 96.77 96.74 96.72 96.73 96.70 96.70 96.72 96.64 96.73 96.73 96.69 96.74 96.73 96.72 96.72 96.73 96.69 SISA SlSA SISA SISA SISA SISA SISA SISA SISA SISA SISA SISA SISA SlSA SISA SISA SISA SGSI 8GSI SISA SISA SlSA SASS SAse SISA SlSA SISA SISA Sl8A SlSA VEG VEG D-67 LB HEADPIN GB LB HEADPIN LWE SEEPAGE AREA RWE SEEPAGE AREA LWE RWE GB RB HEADPIN RB HEAD I:::'IN - ".". - ------------------------------------------------------------ Appendi;.:Table D-54.Ci~OSS section profile of Passage F;:each II in Slot..lgh 21,October 15,1984. F"=======================================================:===== RELATIVE STATION ELEVATION WSEL (ft)(f t)(f t)SUBSTRATE COMMENTS -----------------------------.._----------------------- 0.00 100.00 SISA LB HEADPIN 0.00 99.92 SISA GB LB HEADPIN.-.1.80 99.34 SISA 2.70 98.77 SISA 4.50 98.93 SISA F'"8.40 98.77 SABa 9.80 98.54 SABO 11.50 98.62 SISA 14.30 98.76 SISA 16.80 98.65 SABa 18.80 98.81 SABo 21.20 98.66 SABo 22.10 98.30 98.30 SIBo LWE 24.50 98.29 98.29 BOLG 26.40 98.38 98.38 BOLG 28.00 98.62 98.62 BOLG 28.80 98.24 98.27 BOLG 29.90 98.17 98.27 BOLG 31.00 98.20 98.27 BoLG 31.50 99.00 99.00 BOLG 33.20 98.55 98.55 BOLG 33.80 98.09 98.28 BOLG 34.60 98.06 98.28 COLG 35.60 98.38 98.38 CoLG 36.50 98.27 98.28 COLG-COLG39.00 98.38 98.38 39.80 98.18 98.28 COLG 41.00 98.04 98.27 COLG 42.10 98.43 98.43 COLG 43.40 98.35 98.35 COLG 44.80 98.39 98.39 COLG-46.50 98.47 98.47 COLS 47.20 98.10 98.28 COLG 49.4(1 98.02 98.28 CoLG .....50.50 97.76 98.30 COLG 51.50 98.14 98.29 COLG 53.70 98.24 1?8.29 COLG 55.60 98.35 98.35 COLG 57.40 98.28 98.29 COLG 59.00 98.30 98.30 COLG F:l>JE 60.00 98.76 COLG .-61.30 98.53 COLG 6~3.00 98.44 COLG 65.00 98.65 COLG !'"""66.60 98.24 SGeo ________________________________R __________________•___••~__.~_____ I""" 0-68 ============================================================ Appendix Table D-54.Continued. RELATIVE STATION ELEVA"rION WSEL (f t)(f t)(f t)SUBSTRATE -------------------------------- 68.70 98.20 SISA 70.70 99.06 SlSA 71.40 99.56 SISA 71.40 99.68 SlSA COMMENTS GEl RB HEADPIN REI HEADPIN - """ - ~I ...". 0-69 Appendix Table 0-55.Cross section profile of Passage Reach IIIR in Slough 21,October 15,1984. ==========================================================:== - - .- RELATIVE STATION ELEVATION WSEL (f t)('ft)(of'(::)SUElSTRATE ------------_...._----------------- 0.00 100.(H)SISA 0.00 99.74 SISA 2.00 99.63 SISA 3.20 99.25 8ISA 5.00 99.01 SASG 7.00 98.93 LGSe 10.00 98.95 LGSG 12.00 98.72 LGRU 14.20 99.01 LGRU 16.2'0 98.69 LGRU 18.20 98.81 LGRU 20.00 98.53 SGSA 22.00 98.60 SGSA 24.00 98.65 SISA 25.60 99.12 SISA 27.Of:)98.84 SGLG 29.00 98.93 SGLG 31.00 98.94 SGLG 33.00 99.08 SGLG 34.70 99.07 SASe 36.00 99.63 SISA 36.00 99.75 8I8(4 COI"'IMENTS LB HEADPIN GB LB HE~;OF'I N GB RB HEADPIN RB HEADPIN 0-70 I I I Appendix Table D-56.Cross section profile of Passage Reach I in Slough 22,October 14,1984. ============================================================= STATION (-f t) RELATIVE ELEVATION WSEL ('ft)(ft)SUBSTRATE COMMENTS - 0.00 0.00 3.70 5.90 9.00 10.00 11.40 12.00 13.60 14.50 16.00 17.80 19.10 19.60 21.00 22.00 26.00 27.30 28.50 31.60 35.50 38.00 42.00 43.70 45.00 48.00 52.00 55.50 58.30 61.00 64.20 66.50 68.00 69.70 71.90 72.70 74.00 74.50 75.50 75.50 76.50 78.10 80.10 82.50 82.50 100.0Q 98.72 98.82 98.51 98.32 98.39 98.40 98.16 98.07 98.29 98.15 98.24 97.80 98.20 97.97 98.30 98.22 98.07 98.15 98.36 98.41 98.67 98.47 98.77 98.44 98.75 98.95 98.88 98.86 98.79 98.56 98.46 98.47 98.55 98.49 98.32 98.01 98.10 98.25 97.95 98.23 97.75 98.14 98.31 98.24 98.39 99.54 98.16 98.15 98.29 98.15 98.24 98.16 98.20 98.16 98.30 98.22 98.15 98.15 98.10 98.25 9'7.95 98.23 97.75 98.14 CaBO CaBO eOBO eOEO CaBO eOBO CaBO eORU eORU eORU eORU eORU eORU eORU eORU Boca BOCa Boeo BOCa Boca BOCa eORU eORU eORU eORU BOCa BOCa BOCa BOCO CORU eORU eORU eORU eORU eORU eORU eORU BOCO BOCO BOCO BOCO Boeo Boeo BOCa BOCO BORU EORU D-71 LB HEADPIN G13 LB HEADPIN LWE RWE U~E RWE GEl REI HEADF'I N RB HEADPIN - - ------------------------------------------------------------ Appendi :.(Table 0--57.Cross section pro·fi 1 e of Passage l~each II in SlOLlgh r~,":\October 14,1 1;>84 •..::.~, ============================================================ RELATIVE STATION ELEVATION WSEL <f t)<ft)(ft)SUBSTRATE COMMENTS --------------_.._----------------------------------_.~ 0.00 100.00 SISA LB HEADPIN 0.00 99.92 SISI~SB LEi HEADPIN 3.10 99.25 SlSA 5.10 98.40 SISA 7.30 98.27 SISA 8.00 97.86 SISA 9.40 98.15 SIBO 10m60 97.78 97.78 SIBO LWE 11.00 97.79 97.80 SIEIO 12.60 97.73 97.78 SIBO 13.20 97.81 97.81 5180 14.40 97.99 97.99 SI1:30 15.90 97.80 97.80 SIEIO 18.00 97.97 97.97 SI80 18.90 97.71 97.79 SIEIO 20.00 97.99 97.99 SlBO 20.50 97.54 97.79 RUeD 21.30 97.45 97.77 RUCD 22.QO 97.85 97.85 RueD ~25.~$O 97.80 97.80 RueD 26.80 98.06 98.06 RUea 27.80 97.66 ·97.75 Ruea 28.70 97.51 97.74 RUCa 30;30 98.07 98.07 Boca 33.50 97.98 97.98 BOCO ....36.90 97.87 97.87 BOCO 38.50 97.78 97.83 BOCO 39.50 97.84 97.84 BOCO Rl-tJE 41.10 98.06 BOeO ".....44.20 98.34 BOCO 48.00 98.11 BOCO 50.00 98.29 BOCO 54.40 98.37 BOeO 58.30 98.12 Boca 64.60 98.17 Boca 67.70 98.13 BOCa 71.20 98.26 BOCa 76.50 98.69 BOCO 94.50 98.48 BOCO-108.50 98.53 BaeD 115.50 98.77 BOCO 127.70 98.28 SICa 132.50 98.55 SISA 136.70 10'0.28 SISA GB RB HEADPIN 136.70 100.42 S:[SA l~B HEADPIN_________________________________________~_________________N ••___ 0-72 ,~ ,I I -------------------------------------------------------------AppendiJ.:Table D-58.Cross section profile of Passage F:each III in Slough 22,October 14,1984. ============================================================ RELATIVE STATION ELEVATION WSEL (ft)(ft)(ft)SUBSTRATE COMMENTS ~-_-.0_------------------------------------------------ 0.00 10Q.OO SISA LEi HEADPIN 0.00 99.89 SISA GB LB HEADPIN 4.30 99.30 SIBO 9.00 98.91 CaBO 13.00 98.85 CaBO 15.90 98.55 98.55 CaBO LWE ~ 17.50 98.50 98.62 LGRU 17.80 98.51 98.60 LGRU 18.80 98.74 98.74 BOCD """"19.70 98.80 98.80 BOCa 20.60 98.51 98.63 BOCa 21.60 98.66 98.66 caBO 22.60 98.69 98.69 CaBO "'" 24.20 98.58 98.68 COB a 25.70 98.68 98.68 RueD 26.50 98.64 98.70 RueD - 27.10 98.70 98.70 Ruea RWE 28.40 98.98 RUSA 28.90 98.97 RUSA GEl RB HEADPIN 28.90 99.35 RUSA RB HE{-\DP I 1\1 - ~, 0-73 )--1 -J 1 -j )]J J 1 1 1 ] \jV~·-lI~;~<E.r~S CREE~"<SL_OlJGI-i PASSAGE REACH I ---,--- 200 I---r- 160 I Ir---I 120804-0 "'1 100.2 10001 100 09 9.......t 99.8 >•.--.....-G~9.7W ll.J c.c 6I.L ..._.}..J........,... :z 99.5 1-'-~99.4-I-..a: 99.3 -c ...... _?I t.l..J...... ~....J 99.2 -t.LJ LJ.,J 99.1:,>. t-::99 -:3 S~8.91l..J 0:: 98.8 -i I\~~'h98.7 ~ 98.61 98.5 98.4- 0 Appendix Figure D-1. STATION (FEET) Cross sectional profile of Passage Reach I in Whiskers Creek Slough,October 4,1984. VVr·~IS~'<E~J~~S (=:RE~Er<SL(JU(;~-l PASSAGE F~EACH II ,~\",.//~/~-, '-..'-v//~.~,.... /'...............................~_......- 60 '100.S~ '100.8 100.7 100.6 100.5 ...--.,1 00.4-..-w 100.311...1 LL.'100.2",,"-R~ "7 1 00.1.,,- I~I 1--"100 c ..q:: I ::.~99.9 -..J IlJ U'l _J 99.8 -,ltJ lJJ 99.7."../99.6i=.«'SH;~.5-J tl.Jcr:9~).4-- 99.3 - 99.2 99.1 99 98.9 0 ---.-'.---r--------~. 20 STATION (FEET) I I --------, 4-0 Appendix Figure 0-2.Cross sectional profile of Passage Reach II in Whiskers Creek Slough,October 4,1984. J .~1 I J !••~J J !~J J 1 t J ).J 1 )1 )J }1 )J )1 j ]1 r\1/~\I"jSTE~l1 2 :-;IDE (~HAr"~NEL, PASSAGE REACH Appendix Figure D-3.Cross sectional profile of Passage Reach I in Maiostem 2 Side Chanoel,October 5,1984_ -. 60 ) ;J r--- }V\ .-' ..... T ~1·0 STATION (FEET) ----T---- 20 -r 100 99.9 - 99.8 99.7 ..'-'... 1-'99.6W l1J Lt- 99.5 -"',-f -7.....- 1-'99.4--) 1-- 0 -.:;( 99.3-~~ I ~-,r .......W0\_J W 99.2 lJJ ::~'99.1i--,q _J 99LLJ [1" 98.9 9t1.8 98.7 98.6 -. 0 ~v1 /\I[,I C"'TE t\1 r)C"I C"'"E~(----LJ I~r··'\.I r'I t LIr\'!,,-)_IV'L-,-_J,)\..-t I I r\.~'\J -- PASSAGE REACH II Appendix Figure D-4. ./. ~--,,-----'" J -.-"---,---- 80 100 '......\ftIv -,-----~---I..-'-----I 40 60 STATION (FEET) Cross sectional profile of Passage Reach II in Mainstem 2 Side Channel,October 5,19848 'L_._. .-~ 20 100 99.9 99.8 - 99.7 ...-, 99.6~w W LL 99.5..._,; z 09 4- 0 -.J.• I-99.3.O;!c ..... I ,./.....lLJ 99 r,.....---.J ..L 1.lJ I..U 99.1 :::~ t-::99 -'''1..-.1 W 98.9 -cr: 98.8 (8 ....,~- .I - 98.6 98.5 0 1 J j J J I J ).J ~.]J I )~t J J 1 -]1 1 1 1 ]J )J ]1 J t\/l /~~\I f'\J ::~;'1-E t\/l 2 ~::;ID E~(~H /1\I\J f'·J 1---L 1 00 .2 PA.S SA.r:;E F~EAC H III_____________________........•..-....•__........I '-..-.~:~i~tS .d -,-··-·'---T-·-'----r·-.,--·--r---l--·I .-T--··-r---···r----r--·T""-~-r--·--·r---·I-- o 20 40 60 ao '100 1 20 14-0 1 60 180 $.-.... ........ liJ W LL.....__/ -7.,,- ~-,1_,..' 1--: 4. '""'-.-. -,~ Lt..! CJ ._J I W.......co 1.1.1:-);. i=::...:.l ..~ 11.J Q:" 100.1 -- '100 99.9 99.8 - 99.7 - "q 6 -~::;~..... 99.5 00 4--....1 ...l'. (-~(~'i -...~rf ....7 ....... ",0 'L-'-~;:I .._"I.• °9 1oJ_.• 99 - °S-q -..j ."J' 9tL8 - af~7 ..-'_0'J. 9t1.6 - -\ \\ ',,- \\ \....~ "'\~. \/ \// ~~/'\.\r-"~-~\,.--..,;-'\,--.... I ..,~"lI.J : V Ai ) <". /I' /"./......·...4' ,I (j Appendix Figure D-5. STIl,.TION (FEET) Cross sectional profile of Passage Reach III in Mainstem 2 Side Channel,October 5,1984. hit /~\I r\·~~::;T E~r\/l (-;1 (-'"I [-'E-".--'0L._'-_))__(~~:H p.\r'\j r'~.E=L PAS SAGE F~E.AC H IVL 98 -- 99 - C -1 ,-'.dl.tl - ·------·------r- j / / / /.'....---_.-"'- / 1"""''''''-'r'"t ./-/...-......,•..,,_,,,r"""- /..,"/' I l J ·_-Y·......"V-"//v"~_'-_..........J-- l ,\ '--, \\..lr, \l ---------------~----------------_._--_._----100 99.8 - ("!tC)6 "\y ..... CH)4--I..../..-I .....0 ?_08..].--. 98.8 ('8 .-1 -~•."T 98.6 97.6 - 97.4-- c.SO",->..;,'.L. Co :z: i=<f._J tLln::: 1-- .<]""' .........w.......:.- W .-1 W I,u '".~..... '<' .•...-.... ~- l.d 1J.1 lL 0) •"-J 0.0 9 "7 ,2 --r---r-.------.--·,'---,.-----,----,--T----'r---r--T----...,-,I o 20 4-0 60 aD '100 120 14-0 STi\TION (FEET) "---r-·-----,--- 160 1ao Appendix Figure D-6.Cross sectional profile of Passage Reach IVL in Mainstem 2 Side Channel,October 5,19848 J ]I J J ,_J I ]1 I J )•J I ~ I j J -I ])J )J J )j J 1 1 1 100.2 - t A .6 I f\I (:::.~..-T-E f\/1 '~)(:..--:-I [--"1 E---(-,.LJ i\f'"\,j "'\,j ELVII\...J -.,_)__\}"-'-_,»)'-,./I l~"\I PASSAGE REACH NR ;1 /.II / / / / / J /.1 \. ''-...r "\ 100-1 '\ 99.8 - 99.9 _. 99.7 -- '100.1 $~"'"1-. W lJ....1 lJ.....,---,' Z () i=4:::::-. W c ._1 I LrJco 0 LLJ ~::>: 1--' .4- ._1 u.J n:::: 99.6 -r--·-----·---r---------------r-------------r---------, o 20 4-0 -1-----··---·-~3 0 Appendix Figure D-7. c-"1-.'-r I .~)t··I "f:'tEl'\._>.A.c.....l -_.) Cross sectional profile of Passage Reach IVR in Mainstem 2 Side Channel,October 5,1984~ t'v1 is,II"··,···,J ~;-T'E=f'v1 f"'; L C:""DE':-'-~)-(~H i~..f'··J ("',..,J E~L~ ...-~,I", 1- W W LL ........._/ '7'.~. I:) I-::: 4. '~i:- Lu C ._J I l1J00.....l1J....... ~<t,....] 1.1,J 11"" '100 99.8 99,6 lit (::..-1 ._..:.1 ....,.0..,... 9~).2 99 -, 9ELS _. 9B.6 - Ct·~A _,~·b.""t" 9a.2 - ~)a 97.8 97,6 - 97.4-- s:.-.,("/> .1 ......_....... ~ \ \ \,,, \, '\I~ PASSAGE REACH VR----_._------_._------------------------, I .-',........ /~.. /'.',,/ ",•.t'" //' ,;r",'lt'~ ./,,- /1 '1 /\t /._.....~.........._/l ~...Ivl ~V ~~Vv'/\__...1 9 7 ·-r--·------·r··---'---------r---···---··---·-l-..-'·'--..----T·--····-·-·--·---r-------T-·------- ()20 4-0 150 STATION (FEET) Appendix Figure 0-8.Cross sectional profile of Passage Reach VR in Mainstem 2 Side Channel,October 5,1984m )J l J ).~)a J I I I J ))J _l J ) i 1 J ]j J 1 1 ) r\/ll~\I f\··J :==;;TE ~,/1 0'.......,r'l [-E"....-")--L_,--).A~...(~~:rl /\f\.]~\J E=L_ 'r------------ I~\ .\ \, \, \ I l .I\,/ \ .I / I f A f"\i"7 \~'r--!.'\--~ \/~~.I '''.// ;/"t"'/..- .I P ,',c:'r:.::--At""E'RE AC~'H '/1 c·/"'1,-.'",).:;>,_I,'r'.----_._._------ \L.~_.-\ \/\ \ \, \ \,\,I \:---j '\..' \.../ ,..-............ .......-...-'" '100 99.8 - 99.9 - ,r•........-....99.7-.-1-. W lLl 99.6 -11.. ...._.-1' 7, etC).5 --1-"-;-'---'._. /-.: .:::( CI (:~4.......:1...;..,...........-0' I..LI_-I "9 ';- 0 WI ..J .........CD LUN ~:=. oq .~>-~:..~;.......L.·:::t_J I.1J (::,q 1 -11::'';:'i ..._ • 99 .. ...-~q -C~I (...... ~::j e .8 --t-----·---·------..--,.-·--------·------T-------·-.-----------1'------- o 20 4-0 60 App~ndix Figure D-9. STATIC)N (FEET) Cross sectional profile of Passage Reach VIR in Mainstem 2 Side Channel,October 5,1984~ t\/l /\\I r'''',...,J ~:::;-T-F-~/1 (~') ..".....-(~"I [-'E r-".~~/'r'J f ~E'-L---)~I --f.\".....-.,__J j _\.......-/.\.... _ PASSAGE REACH ~IR I:=~w 1..1.1 I..L....-......~ :z: I~',..-1 i= 0:1.:'.- :=::~ CI W I _J 0)I.J.J w b;lJ .~...)I. 1--_: -.(.( _J 1..1.1 11: 1 01 .'1 - 101 - 1 00.9 - 100.S 1 00.7 100.6 - 100.5 - 100.4--" 100.3 - O l-l ''/-1 ...~ 1 OC),'1 - '1 00 -~r /\\99~-I\;\I J 99.8 -\ . /\....,,/"._.......11 j \,I ~\.a .••.~..Icqb-..:~....... 99.5 - 99.4-- 99.~3 -- .\/\,,11 JV 'n f/I V'" .1 / / I I 99 .2 -t-..--l-·-,..----'-....--r--r---·-l-···-T----'·--T--·l----T-----T---r--T--,---y----·T-·---r--- o 2 [)+0 6 [)eo '1 00 1 20 1 4-0 1 60 1 a 0 Appendix Figure D-10. STl,TION (FEET) Cross sectional profile of Passage Reach VIIR in Majnstem 2 Side Channel,October 4.1984. .~1 g J I I ]]J J 1 J I I J 1 ! --1 1 1 ....-1 ]J J 1 J »J ) t'v~/J.,I r"'~~;1-E ~/1 r) L ~:)IDE (~H A r'".]~"..JE l- PASSAGE REACH VIIIR /",....----,.,.-. /1 I \j\ '-J' ,-,.-_.._----,-T r r--··--.-- 20 30 40 50 STATION (FEET) /~ V ,- 10 I100.6 100.5 '100.4 '100.3 ,-... 100.2l-ww 100.1LL "'~f Z 100 -0 ~.99.9.•.:(a :::-.I CO L.LI 99.8.J:a -'W ltJ 99.7 > 1-'99.6 -~ LJJ 99.5a::: 99.4 99.3 9£~.2 99.1 T -r0 0 Appendix Figure D-11.Cross sectional profile of Patisage Reach VIIIR in Hainstem 2 Side Channel,October 4,1984. 99 -''.".6 - 09 4-,;t-.'.-.. ....--....S,~).L~- 1-" 1..0 99 -1..0 lL...._~/9ELS - --;? .L..~.98.(3 -,-'~-....' 1--4::98.4-.... .>. l..1J 98.2 _. c --l I W \ co U1 98 -\ U.J "/:~~~~.97.e _~_'-.I.,r i=: ....:( ._J 0-1 E" 1..0 ••j.J • ) 11::97,4 _.. c.-.,'}v·J •.L-- 97- 9f'Q'".),U -' -----_._--_.._------------_.._.._-------_.~-..------_.100 99,8 C~:~l (-"L J (-:~I-J >:~/\......._~._.,._)._'-"'I 1.._)I \ P I)c~c·\(>E'DE-:\I~'H II.Pt.,_J ,.)/"\•.;0 I "I .....~---'--r-- ""/ / /l l / / / / /I .......'"'\/ _..,,~\//\/ \/\/,( '-_I'\;' \-/I ~../II I /1 ~...'\~~....../\. \I' ~A'-j\I'l"""l \,/".I \#'... ...."1•.,/ 9 6 .6 --t·------·--"..r-·-·--··-·--,-----··---T-·..·-------..·,-·--··---·----r--..---·---I-··--··----·----- o 20 4-0 60 Appendix Figure 0-12. STATION (FEET) Cross sectional profile of Passage Reach II in Slough BA,October 6,1984m !J I J J J ~~I I I }j I B j ]J J ,J 1 j J J ]1 J 1 I 1 S L.OlJ C-;l-i SA PASSAGE REACH IV r 4-0 "'! J-- 30 -.--,. 20 -. 10 ~""!'Jf\( --J ~~\7 V"'--V 100.6 100.5 100.4- 100.3 100.2 ...-,1-.'100.1llJw I.L 100....---/ 99.9 _r~"z () i=99.8 0 .4: I '-...90.7./ (»Wen..-J LLJ 99.6 - w 90.5 -> \-99.4--~w 99.3 -r.t:: 99.2 9S).1 99 - 9B.9 - 98.8 -,-, 0 Appendix Figure D-13. STATION (FEET) Cross sectional profile of Passage Reach IV in Slough BA,October 6,1984. SL(JlJGf~8l-\ PASSAGE REACH VIL ,'-----I 60 !/ /F /--~/;/ 7'/ ~I 4-0 5TATION (FEET) Cross sectional profile of Passage Reach VIL in Slough 8A,October 6,1984. .". \ \/\/,-J.~";? Appendix Figure 0-14_ -+--I --r -r- 20 1 00 . 99.8 - 99.6 99.4- ,.---" l--99.2lJJw LL'--,.99 z 0 98.8 -i=.~ 98.6 -c :>I Wen -.....J -1 W 98.4 lJ.J '-~ ,.....~98.2l---<:{' .-1 98W 0::: 97.8 97.6 97.4- 97,2 [) J i I 1 J J J !.J il I ~•• 5 I )I J i 1 )1 j 1 J 1 )I J l 'J i SLOljC;~~8i\ PASSAGE REACH VIR ---------------- .--I .---"l 40 50 '-.,..'-..~ .- 30 -I 20 -1----. 10 100.2 100.1 - 100 ~............9S).91-w W ('9 8u....~..'-; z:9S),7 _.1-"....... I--: 0 -<f.. 99.6I>00 w00.~ 1..L1 99.5 - lJ.J:> l-::99.4--:3 I..l.J 993-·0:::...... 9",~.}.£..- 99.1 - 9S~ 0 STATION (FEET) Appendix Figure 0-15.Cross sectional profile of Passage Reach VIR in Slough BA,October 6,1984. SL()lJGH SA PASSAGE REACH ~IR III 100.2 100.1 100 .....--....99.9I-w lou l.L 99.8.....--J. z 99.70 I-<1:c ......99.6I.-....... co W \0 -'LLJ 99.5w:> r·99.4--.q _1 W Il::99.3 99.2 99.1 99 0 20 -.----------------1'---- 4-0 .,/ "-,,-_;1 r 60 Appendix Figure 0-16. STATION (FEET) Cross sectional profile of Passage Reach VIIR in Slough SA,October 6,1984. )1 J J J ~))B 1 J J I I )1 )-,I i 1 1 1 )--1 1 1 "J ))1 J 1 00 --.-,------ S L.O LI C;J"-l 8l~\ PASSAGE REACH V'IIIR -------------------------- agv,,9 -j;' ...~'-99.8 II I-w W l.L .'I ."--.... z 99.7 _. 0 .- c .« I ..--../99.6 \0 w 0 ....J LlJ r w>99.5 i-(\11 /J .:;:( _J W I\rY 11::99.4- I I I l ~/1 99 -'r • ................/. .J - I o r- 60 99.2 t I r-' 2:0 Appendix Figure D-17. T----·' 40 STATION (FEET) Cross sectional profile of Passage Reach VIIIR in Slough SA,October 7,1984. 80 ~;LOUG~~SA PASSAGE REACH IXR I I I I --I 4-0 60 STATION (FEET) 100 ~f""" I -~--I 80 vJ1# 20 100.8 - 100.7 100.6 100.5 '100.4- .'--'"I--1 00.3W 1J.J 100.2 -IL '~--' Z 1 00.1 - 0 1001-' '<e!99.9 -c '-., I ,/ Ul W....._J 99.8W w 99.7.............. r:99.6:3 99.5 -1.1.Ju:: 99.4- 99.3 99.2 - 99.1 99 I -r 0 Appendix Figure D-180 Cross sectional profile of Passage Reach IXR in Slough 8A~October 7,1984~ 1 D J •!J ),)J J •.1 j ))J ) J )1 )1 ))1 1 ---1 1 J )J -i C'L"-)LJGH 8 '\~).(--/~ PASSAGE REACH XR 100.2 100.1 100 ...~'"1-.w 99.9W l1.- 0,-/ Z 99.8c· /--.« 99.70:>I w1.0 N ._J llJ 1.t..J 99.6 - >.-:5 99.5 LL!n::: Q9 4-.......~ 99.3 _. 99.2 0 I '10 r~ \ \ \/ "'v/ r----- 20 \' '7,,----..-.--. /\..''\, "0" \ 1 30 Appendix Figure D-19. STATION (FEET) Cross sectional profile of Passage Reach XR in Slough BA,October 7,1984. SLOUGH 9 PASSAGE REACH N .-------r 160 180 I I r----r--r-I I r---. 80 1 00 1 20 1 4-0 STATlON (FEET) ---------------------- Y--r--r 4-0 60 .--. 20 ---'\--------\-~---....,r ·\/",'V ~ "-J 101 .2 - 101 100.8 100.6 ....-...... I-'100.4-ww LL 100.2'-.-" Za 100 1-- .~-:( 99.8>w .-Jw 99.6 LJ-J:>99.4-~.<[ ...J 99.2 -LtJu:: 99 98.8 98.6 98.4- 0 Appendix Figure 0-20.Cross sectional profile of Passage Reach IV in Slough 9,September 22,1984. B J J ,.1 l I i J ]1 J ~1 }1 _I J 1 )J j OJ -1 ]j 1 1---1 ---1 0-j ) SL(JLJG~-1 9 PASSAGE REACH V 1 00 -.-,------------.--- l--" LLJ L.1.J LL "'-J0 Za l- T' 0« :> 1.0 w -1=00 _J W \;J.J ....'::::. I-<f o-.J Wa::: 99 -f \98~\ "'"97 ~\ \. 96 -i \\ 95 94- \'I' ~/r-~ .\./'y -;-.h /''J.jlJl/ / 93 I I I 180o20 ..I I r I I I I I I I "'I I 1--1 4-0 60 80 01 00 1 20 1 4-0 1 60 Appendix Figure D-21a STATION (FEET) Cross sectional profile of Passage Reach V in Slough 9,September 22,1984. 100.4-.-r\~ I J/\1\A.~)\\V~---~J \ \\/ \/\-,., .-./'" ,.... " -- (........l '--)l I ,-~,l ~-----~:)__(_~-j (.__::;1-'-1 ~)/~\ 1 00.5 _.___________PAS SAG E R E.AC H I_..H _ 1 00.,3 _. ,1 •...--..... 100.2 - I-- IJ..J W 100.1 - LL,_/ :z::-100 - 0 j::-99.9Y\/<f::; LLI 99.8 '1::1 __-I R W 1O U1 LLI (.~>.99.7 --Ir-\ 4-__J 99.6 -\tllJ [t::9S).5 - 99.4-- ~)~).I~) 99 ,'2 -t------r-----·---r--------T-----r-----T--·---,-------r-----T----,-------l-----r---l"----- o 20 4-0 ~:lO 80 100 1 21] Appendix Figure D-22. STA.TI()N (FEET) Cross 5ectional profile of Passage Reach I in Slough 9A,October 8,1984. ]]J J )J )J J I J J J .~.1 l ~~..) -~l -)J 1 )1 -J -1 ~--)I J J )1 ,'---"L ,.-....l I ....-...,~1,..~.()I -I -...,.:)'.--''-.....c:::~f'~ .....j \ ...----,....-w W LL.1,.--.... :Z~ C) !"-: .o<j-. -......-.../" 1..iJ C ._J I 1..iJ1.0en U.J.......-.:::::. 1-: <t._.I L.LJ 11::: 100 99 - 98 - .-"-r~I - 96 - g r.:'.LJ - ('4.)-- PA c·(~('0 E·F·J E ("H II.-..)::>1 ..,;;>,I _~ \\---- \ -..---- \ -----1---"---"- I \I . \I\I\/~I~I -I ......_-._-/./'~'\!' \ I .I I .~ \ / ........__......;.-.;.....----'\...I\,~-/ / ....---- V ~ 9::';-t----·--,----·-·,.------·,-----r-·---r-----.----···--r---..--r------r--.....--·--:--..-r··-·--- l)20 40 60 80 '1 00 1 20 STATION (FEET) '." Appendix Figure D-23.Cross sectional profile of Passage Reach II in Slough 9A,September 23,1984. C'-'L()ll·...--.·L J (-A,..::)_."-._~\....7 1-I -::1 l~ PAS O;;:'•"-~E RE'i (.....H III,-_iAC",_f\.' 1 -,[....LJ J ----.-----...---.---------------.--------'-------,----------.- .•..--.w-.... 1-. W 1..L1 I..L. "..--.,," 2-::r::1 i=·<i "-.._...;t: c ltJ I -' \.0 W ...... LtJ...............,::.. i= .~~" ._J I..1J Q" 99.5 - 99 O~5 ....'.......I 98 - 97.5 - 97 c~[;'"(:::..._.'\,J •...,J -- 96 .... \ \I\ )\~ / .// \.----./.........w __._--_.......i ~~I"'"-. .........,. \/'/,-,\,...//'~"("~.."-\.t-~..../-·......t'r-,,__... \~ "/\)1\..../. c....,-......)=:).~)-t--·-·---,-·----·,.--------··r------r-·---··-'----·T------.----·--.---,--·--,----·---r---··..--' o 20 40 60 ao '100 1 20 Appendix Figure D-24. (,~'T 'TIO N ("FEE1''--..l l\..._) Cross sectional profile of Passage Reach III in Slough 9A,September 23,1984. J J I J J )I )J )J J J J 1 l J J )----1 J }l -l 1 1 1 J 1 l ) C::'l """')I I ('-'~L.J"__)__.C_~.....j \.......I I C'-',1\l~~..-.i I'I• ....~......l"-'\ .,'''1.,.1-, LLI IJ..J I.L - :Z: () 1-- <C ,~i ....J0LlJI lO Lu<Xl '-~.:=:-. 1-'-:::J IJ..J Ct:: -100 99.5 - 99 - 9B.5 - 9ti - S)~l.E)- 9'7 - Q6 5 --~.". 96 -- PA'(,,':;'0;;::'1$--"1::R E'i\l..••H 1"/.__~.........r ..:?_.._f.."./_'I \ \ \ \\, \\\ "j\/\I \"\/\/\,'---"/~/'~~/'~,/./~,-._--"\/ \....,/,,/ .\.,,j"'" \--,-./\~::::=:-.--.--~-----·-~-..------~:..,-,..7--· "'~'\If',) ""I ••~._•~I 9 5 .::;:,'-r'---'~--'----'I-'--'-'-'--'--'"T--'-'--------I--'-'------,--.-,-·r------------·.-r------,---i----·-------.r-----------------..-..-" iJ 20 40 60 eo Appendix Figure 0-25. ST/\TIO~~(F[ET) Cross sectional profile of Passage Reach IV in Slough 9A,September 23,1984. C::-l (--'l I ("'~LJ (=1 ~..._)__.,._)-''-_.~I I ....~I \ PA.SSAGE REAC:H \/ ----_._----------------_._-----~~----------_._-------------.._._---_.....~-_._--- \... \\ \ \, \ \, \. \...., ",\ \.... \ \ \\ '.", \, ........ .......... 1."........... ~, ""\..--\ "•....~,-'/"\ ..<.·;;r"...--t·~\........~.......,....,t'\.......,_____----"""'4 \..,,..\ ''-.....,.J \.~.,l \-. ..........$'\/I \-"...../\\/'l \,'\ ',-..1 1 9 (:).8 -f---r--l--·----r--·-·r·--·--T·--·..--T-·-·-r-T--·T--......T---l·---·T-,·!-_-T~L__,-- [)20 4-0 60 80 '1 [)0 1 2 0 1 4-0 1 60 100 99.8 - 99.6 Cd)4-~........ ..r.-.....09 21---...'.. W lLl 99 -LL...._..... z 9a.8 -,-,.......'98.6 _..i=: j".~::;::(~8 4- lLi ...1 ~ 0 ..-.1 I I..JJ 9EL2 -~ ID ~;I 98 j=: .•::J'"97.8.-J LlJ C1:::9"7.f) C-'4...."'1 l .-0.-- 97.2 - 97 - Appendix Figure D-26. STATION (FEET).. Cross sectional proiile of Passage Reach V in Slough 9A,September 23,1984. 1 J J .J )J •J !)I c J J I I I J )I -1 ,)1 '-1 )]1 j )l ))J c-'I "-')l j ,"--".r-i (.....1\"--'I·...~~~........)__(_._\.J ,j /-\ P 6,c::c:I.['::;E R EAC'H \/1I....)......Ir\,,;_...."..V 1 (~...) 5Jl....-----------------------.------ 100.4-- ~ 1-· lJ..J W I.L...._~~ :z 1~'1--" 1-... '<1::::::=. liJc_.IIlJ..J...... 0 0 ILl.""'- .-.P .--.« ._.J I..lJ Q~' 100.3 - 1 00.2 - 1 00.1 - '100 - 99.9 -1 $J"••,........... 99 .8 ,(""II::.~-1 '"j\!'v '..'.J .0 -l /\'V ..~.........J -•....-\'\- oc.j ~)•4--..I (..J1/QC 7 \ ._.,...}...J -~\ I·'·'....~...,'/\\j/'--'" ./\ '-)..-..........."./"'" 99 .2 -t-·--··---.-----·--·-----·,-·---·,--·---I--·----,-·-·--~-----'---T------r·----- o 10 20 .30 4-0 STATION (FEET) ~'.." Appendix Figure D-27.Cross sectional profile of Passage Reach VI in Slough 9A,October 8,1984. j-~ 1--- W W L.L.-"_.J'" :Z: C=:a i=: :":( .::--'")1- L.U c ._1sW&-" 0.......L.LI:>. 1--- ·<f_J W Lr.::: 100 99.8 - og f-.'..) I \ 99.4-~\ 99?---'-.•.L. 99 98.8 - 98.6 - 98.4- 98.2 - 98 gl~?.8 '::::'L i'~"\l I (-....H (-}6-._J ~._)_'\...7 :::J I \ PASSAGE I~EACH VII \) \) \ Il~/ \ /....,'-I~I r-I ~/\ _.,/'__/-A...."-J.....,'-(\/1 \ / ,\\J\/_J I \11'\)~1\'-.,,/\:7.;~,-',/I ~''\'Y I " 97 .6 -1-------,---------.·----------r---··-----·-r--------r--------1-·-----..--- o 20 4-0 60 STATION (FEET),. Appendix Figure D-28.Cross sectional profile of Passage Reach VII in Slough 9A,September 23,1984m t .~).,J '.J I J .~J D I j J J !J ~,.~ l 1 1 I )])1 J 1 "1 J 1 J }J C·"l r',l I·("-::LJ -,._)_.(_)~,j '.....7 I I (:=~L~___)I \ 100 - 99 '~.'-qQ W .~u W LL ..•.._...... PASSAGE REACH VIII._-----------, f\I o I.....o N z: I=:) 1-..;j:: :=:::~. W ._J I.iJ 1..i..1 :=:-;=, i= -<i___J IJJ 11:'" Q -r....I 96 - 95 - 94-- ~~t j~/"...1 .....-."~-""'-;"'(Ji-'-'-J -~!\-------..__I ~.'-/\),\_...r~~---//\ -/y ~V-V -~-- \r\/ 9'::i -t'---,--'--r----J----T----·I---.--'·--r·-~--'~·T·-·-'-_r 0 2:0 4.0 60 80 1 00 ~I-~-'----'l LiG .-··----1----.. 14-0 Appendix Figure 0-29. ~~T l TIC)N(FEfT"-.,.\..'---,.) Cross sectional profile of Passage Reach VIII in Slough 9A,September 23,1984~ 10 0 .-------------. .-...l ..-.t I ,--~-l ('''~''&&''\8 !..,I 1'\ .......-I,)I ······Jl-. •__.~_..__...'-....~I V ',--~i \ P ~'::::-~::;I'C"'E RE'AC'H I...···?I..J "'1"'\:;>••"~1\------------------------_..., 99.8 - 99 - 98 .- 9f.L2 ('.Q Ii·.}u ,"T - 98.8 - qs 6,~. 97.8 -- 97.tl .-- 99.6 -I \ \c~C'4-_I \,_,.}.1 oq ?_I ~..-,..~~.",--1 """ \"< '\ \ \., "'""'....... "',.......... ....... '~............"J ""-........... '...,r--......_,I ,t,/,A I\/'r-,;>~-.,...' \........,_/\--~---/...../ \J';;::----;;,..-.-.,~.....~.........---.__/II .."'.......'""....'./.'V ... ('7 4--I \,.~.,J..I I\../\-' 9"7 .2 -+-··-··------r·----------··,..--·------l--·---·--T---------·-·-~--r-----·-I·-···__···-_·-··--,,·· c)?(")4·-rJ '~("I.__'.I(.).' ..-_.... J- LLJ lLi lL.....~.--...... •~-:J". L. 0 1-....j:::::-. I..LIc.-JIW..... 0w L.lJ 2:1--.. « ._J liJ 11.:: Appendix Figure D-30. ST;\TION (FEET) Cross sectional profile of Passage Reach IX in Slough 9A.,Septembe....23,1984. )J J i ,J ~j )oJ I J )))J _I i 1 ~-l ))]J 1 J )I 1 J )j 1 Sl_(JlJC;ri 9A PASSAGE REACH X ~I~·_·---- 60 J l' ~-,- j' i -_._-'----, 40 STATION (FEET) Cross sectional profile of Pas5ags Reach X in Slough 9A~October 8,1984. 'r-" 20 ~~ Appendix Figure D-31. 100.6 100.5 100.4-- 100.':'1 '100.2 ...-.... I-'100.1W I..1..J I.l....100 -...._" '7 99.9 -..:..- 0 99.8 -I-~ 0 .« I >99.7...... 0 I..1..J .j:lo ....J 9~).6W LJJ 99.5 -:>I " I-99.4-.<i' .-:1 99.3 -w rt:: 99.2 99.1 - 99 - 98.9 98.8 - 0 SLOUC;H 9i\ PASSAGE REACH XI J I,,/ .,./~ / / '100.3 100.2 _. 100.1 100....-..... I-w 99 q -l.tJ ••'V lL...._.... z 99.8 a l--99.7c«!>~w0 99.6U1-.J LLJ W 99.5> I-:5 99.4- w 0:::99.3 99.2 99.1 Appendix Figure D-32. 60 •99 -r o ~~'-'l '">0L. ---,--,-I I 4-0 STATION (FEET) Cross sectional profile of Passage Reach XI in Slough 9A v October 8,1984. 80 1 t J J J J I J )J -}J ).~J J J ]J J )J 1 J )1 J ~t '1~--.L C)LJr--'L-J...J '._01 I PASSAGE REACH I ~f'~~~\/~(./' '.---..~ ..T'.........·r~--./7\'V' ,I' 10t] --r 80 ·r--r-.._-......- 60 --I 4-0 r---. 20 100 99.8 - 99.6 99.4- ...-.... I-9S).2 -w I..LI LL 99 -",,_... :z1::1 98.8i-:: c '''1.. 98.6I>......w0.-J0'1 w 98.4- w ~,.9tL2i=: -<e' ._1 98wu::: 97.8 - 97.6 - 97.4- 97.2 0 Appendix Figure D-33. STATION (FEET) Cross sectional profile of Passage Reach I in Slough 11,October 18,1984. 2;LC)lJ G ~i ~''1 .~) PASSAGE HEACH III 100 l -_.-I' ;--~. / -I~-----' 8060 -r---. 40 ----.....J"\-.....~ 'Wv--.ry l~ 'iO~ I ---100 99.9 99.8 99.7 ..........99.6I-ww 99.5l.l. '-./ Z 99.4- 0 99.3l- t::)~I 99.2&-'Wa......-l W 99.1 - LI.J 99'.........,.- ~-.«98.9 --l IJJu::98.8 98.7 _. 98.6 _. 98.5 - 98.4- 0 STATION (FEET) Appendix Figure D-34.Cross sectional profile of Passage Reach III in Slough 11 9 September 21,1984. ~J }J J 1 J ~,J J J .J )t )..J J ~ --~·l 1 J )J 1 )-1 .-1 1 )1 l SLOLJC;H 1 '1 PASSAGE REACH IV 604-0 I I) 1 00 -,------------------ I99.2 --I I 20 99.9 'i-"99 .'..8 - w LtJ LL"_Y ,..(.:.9 7 ~ v .... () I-~) c -<C........ I •.r'=-99 .-, ......w '..(j 0 _J 00 ~.../ W LLJ......99.5 -../ I-o::f__1 W D::::99.4--; 99.3 -I \)\. STATION (FEET) Appendix Figure D-35.Cross sectional profile of Passage Reach IV in Slough 11,September 21,1984. '-' 80 .- //j/ r--~" 60 SLOLJC;H 1'1 PASSAGE REACH V 40 STATION (FEET) Cross sectional profile of Passage Reach V in Slough 11,September 21,1984m -----.-------r-'I 20 Appendix Figure D-36. o 99.5 S~9.6 1 00.2 --rr-----' 100.1 ./-,. ~100 W t..L..........- Z a 99 .~) 1-- <:I"'I I ,I \""-'111 \fv'., CJ ......~ •.J"'~.. 1-1 ll.J 0 .-.J '-0 W 99.8 1.t..1 99.7 j \~J/......~ .-" I-'<.1-' _J llJa:: J ,..~)J J ~J )I )}J J J J ) ]"-1 )1 1 J J J J j 1 ') 98.6 - 08 t::............J- 80 ~''"...... ......, "I' --r-----I I 60 ~3l_l)lJ (~H ~1'1 PA.SSAGE REAC:H VI 1----,.. 40 r--...',,/- ,----j -.......,; r- 20 99 - c:~C)i:- .....""I .. 99.7 - cs"C~.v~ 98.8 99.1 1 00 -...-,----. 99.9 - 99.8 99.4- 99.3 \99.6 -I \ 99.5~\ \", ""'"" \-J\98.7 98 .3 -t-----..,-·-- o 98.4- ........-., 1--' 1..tJ I1.J 1.1- "-../ :2: I""'.'..... i-.« c "-"./I 11..1t-' t-'..-1 0 1"L1 1..t.J ~u. 1--'.....l ._J I1.J Q::~ Appendix Figure D-37m STATION (FEET) Cross sectional p~ofile of Passage R~aLh VI in Slough 11,September 21,1984m --- J ,../ /" ~//~V / --_._----------- Sl_.C)UC;H -'1-1 PASSAGE REACH VII 100 _.. 99.9 - 99.8 99 ."7 -1',"", 99.6 ...-..,1\.."99.5~w 99.4--I.L...-./99.3 -z: 99.2 J \0 I-99.1c4'".. I ..........LLI 99.....--.J.....L.Li 98.9 flLl......98.8"..;.". i-..·....:r 98.7.-.J LLJ 98.6LX: 98.5 -- I98.4- 98.3 98.2 -~ Appendix Figure D-38. iJJ -----T 60 -T J J J I J )I •• ,--'---T 4-0 STATION (FEET) Cross sectional profile of Passage Reach VII in Slough 11 9 September 21,1984., --~-r 20 JJij qQ 1.....lJ I JJ 1 J 1 I 1 J )»J 1-1 J 1 1 00 -,- LJPPER SIDE (_,:HA~~NEL 1 ~1 PASSAGE REACH I C I--N ...--.... ~ W I..L '''-'' za ~/' W_J W Ld---../ r::.<{ ....1 IJ.J et.:: 99.5 -U !1 J II 99 ..I 98.5 - 98 97.5 97 96.5 Appendi~Figure 0-39. 96 -t--r--Y--I I I I.I I - I 1 I.I.I J I 1.---. [)L~O 40 60 80 1 00 1 20 1 4-0 1 60 STATION (FEET) Cross sectional profile of Passage Reach I in Upper Side Channel 11,September 21,1984. 180 ~3LOUGJ-l 19 PASSAGE REACH VI J J j i ))~J ~!),"~j , .. ,,/ ( 1612 1 4- r--,--------,I 1r1,--r I I 6 8 10 STATION (FEET) Cross sectional profile of Passage Reach VI in Slough 19,October 17,1984. -r- 4- "1 ..------- ?...- ..,." ~~, '-........"......~,- '"----j.~/-....-.../ o Appendix Figure 0-40. , 100.5 100.4- 100.3 100.2 100.1 J-'I-100I..LJ W lL 9~).9 ."-~; z 99 8..;-f a 99.7~ CJ «--..~99.6•-~.....l1J......-Jwl1J 99.5 1.tJ 99.4-....... ../"" "...::99.34' .-l 99.2lLia::: Qg 1....,..... 99 98.9 _. 9EL8 98.7 ]-1 1 ;1 J 1 1 J 1 SLOUGH 19 PASSAGE REACH ~I i \'1 ~~ .-......~ ~~-1V\; I I I I !!--.I I J I I I I I I I 8 12 16 20 24 28 32 STATION (FEET) 100 99.9 99.8 99.7 99.6 ...-.-...,99.5I- llJ 99.4-W 1.L 99.3 -'-'" z 99.20 I-99.1 0 .« I ......99..,..,......w..... ~-1 98.9W I..l..J 98.8 >98.7I-.«98.6...J IJ.J ll:::98.5 98.4- 98.3 98.2 Q -1oJ(j . 98,--,, 0 4 Appendix Figure D-41.Cross sectional profile of Passage Reach VII in Slough 19,October 17,1984.I ~;L_(J LJ G 1-1 ~1 9 PAS SAGE R E.AC H VIII '1 2 -T--- 10 r -, 8 ) / // I // .-------/ 4 6 STATION (FEET) Cross sectional profile of Passage Reach VIII in Slough 19~October 17,1984. I ---r , ,,- .. -----r 2 //~~ 1 /"-~-----~-..........._-~-----"---- Appendix Figure D-42. 100 99.9 ('9 8 -~.. ('97-~.. 99.6'p 99.5 -w W LL 99.4--...._.;' z 99.3 -0 I-99.2.0::(0 :~>I 99.1 -I--'WI-'_Ien W 99w 98.9> j 98,8w 98,70::: 98.6 98.5 - 98.4- 98.~3 -'. 0 J J I )!.J ..~)J J I t )I J ",CC_--J 1 )"])----J ]J C J )J --"-j -~ ~ ::;LOUC-;H ~1 9 PASSAGE REACH 1)( r---. 24- .,---------------- 4- \.....'"".~/ ........~----.-------~\/ \~/ \ /\J//~"" r'v-- 1 I r -,---r--I I I 8 12 16 20 100 - 99.9 99.8 99.7 99.6 ..-...('9 5 -1-....... w 99.4-w LL 99.3'---/ z q9 2Co...... I-99.1 0 .« I '"'-.99.......7.....1.Ll O'l ..-1 98.91.Ll IjJ 98.8>.98.7.-.<t:' 98.6..--.Jw 0:::98.5 - 98.4- 98.3 98 ,-,...t.. 98.1 98 0 Appendix Figure D-43D 5TATIO N (FEET) Cross sectional profile of Passage Reach IX in Slough 19,October 17,1984. SLOLJGH 2() PASSAGE·REACH I 1 02 -.-,---- 98.5 - ) / /~ .,/".------- ~.// /~_..,... ./~./"~/-/ ./'",.,/'" .// ./( y/ o 60 -'-1-~'-'I 4-0 STATION (FEET) Cross sectional profile of Passage Rsach I in Slough 20,October 17,1984. Appendix Figure D-44. .J--I ------r- 20 98 99 1 01 100 99.5 101 .5 100.5 /--... l- lJJ W LL'_r Z 0 1- 0 .C« I ...... ...........-'"....W ""-I -J 1l..J ItJ>- l- :3 l1Jn:. J I ••J J i J I J J J )••J J J J 1 1 1 )J i I 1 OJ 1 j SL ()lJ C;~-l 2 (=) PA.sSAG~REACH VI 100 \---'\.1 80604-0 ~"," "",,- "~ "'-"" ~ "'L t .....,-v/'"/\J"---/.....~- I I I I -I I·--IT---.----.----20 I I ,'--_. 100.8 100.6 100.4 /--.... 100.2 I-w 100uJu....._;. z 99.8 - 0 .......99.6c.4: I ............./......W 99.4Q)_.J W W 99.2 -> 1-.. <f 99-l llJu.::98.8 98.6 98.4 98.2 0 Appendix Figure D-45. STATION (FEET) Cross sectional profile of Passage Reach VI in Slough 20,October 17,1984. SIDE C~-t~\f'Jr~EL 21 PASSAGE REACH I 60 ",J"............. r------.---- 40 ./~JI / " 20 -----.98,9 -r" o 99.1 99 99.2 100.8 , 100.7 '100.6 100.5 - '100.4- 100.3 '100.2 100.1 100 99.9 - "99.8 ." 99.5 99.4-~__-......-__ -'9 "7 \\\f_.J r .~~"".--I '! ......_, I- W W LL ...-.-..Ii' ZI::' I- 0 4:I >I-'......W \0 ,_I W ll.J '"'.......--:-«.--1 Wa::: Appendix Figure D-46. STATION (FEET) Cr05S sectional profile of Pas5age Reach I in Side Channel 21,October 16,1984._ I J I J I I )1 , -~t J l J I _J I 1 -]}"J 1 J }J ._-]1 1 SIDE c~-~/~r'J~~EL PASSAGE REACH II r)1L 120 ~~ I I r 100 I I--r- 60 aD STATION (FEET) Cross sectional profile of Passage Reach II in Side Channel 21,October 16,19B4~ 4-0 . -r-'Ir---'1 20 \ \ \~." ..................,---- ---"-~ ~~r-7V\';V .."." Appendix Figure D-47. 100 99.8 99.6 99.4- ,,-.... 99.2I-ww 99LL...._/ Z 98.8() i--98.6 -c .4:I................ .'"N w 98.4-a .-1 1.lJ (,8 r,w ~.L- "-.""i--98~ I..u 97.8Il::: 0.7 f -""..J 97.4-- ('7 .-,~.L- 97 . 0 r""1 C'E--,~-CHA~~f'~EL 21 PASSAGE REACH III 4·0 ) "'"IV I I I 1 20 30 ,/....... ./"-~~ ~ 10 .•1- 100 99.9 99.8 99.7 ~..........99.6I- lJ.J lLl 99.5LL"-" z 99.4- 0 99.3~-CI .q:I......"'-99.2../ N W -, I-'~''\w 99.1 llJ 99 \ " ./\I- ::3 98.9 wu::98.8 98.7 98.6 98.5 913.4- 0 Appendi~Figure D-48. STATION (FEET) Cross sectional profile of Passage Reach III in Side Channel 21,October 16,1984D,I )»)I J )J ).-I ,,J J •__.J !J 1 )J .'-J }].~"'1 1 'S J '1 ')]i ~;IDE C~~ii~f',JNEL 21 PASSAGE REACH IV 100 99,9 l' ....-... I- LLJ lJJ LL "--/ '7."'-- 0 l-e <iI>....... N llJN-I l.LJ LJ.J> ~.' lLl 0::: 99.8 99.7 99.6 99.5 99.4-- 99.3 QQ.2 _."-'.... 99.1 \~\~,G / ,f Appendix Figure D-49. 60 99 o --,...,.- 20 IT',' 40 STATION (FEET) Cross sectional profile of Passage Reach IV in Side Channel 21,October 16,1984~ 80 ~::)I [)E~C ~-1 ~\r'j \.,.j E L_2 1 PASSAGE REACH VII ). //' 160 -..----I -r-" 1 20 '1 4-0100 /Ij r I~ I r I ---r'-'--""- 4-0 60 80 t -+--I -.- 20 -.--.100.2 100.1 100 ...-......-99.9W ltJ LL...._...~.99.8 -"........r\~. ~99.7c I :::~..... N W(,oJ ....J 99.6W U...J:>99.5 1-"": <t._J W 99.4 -c:r: 99.3 99.2 99.1 0 Appendix Figure D-50~ STATION (FEET) Cross sectional profile of Passage Reach VII in Side Channel 21,October 15,1984u •t t ,)1 J J •J J J J J I J ,t J 1 J ]J 1 )J )-t ~__c )1 J SIDE-C~-·~i~J\·Jr\JEL ?1 PASSAGE REACH \fIll r---.--..........~----._ 60 80 100 j r'., I I --,- 120 1+0 I l ./.1 ------._----- iv ,/"-._,- ...,.---.....- +020 \....... o 98.8 _.- 100,1 _. '100 - 99.9 (.'9 8 -...........,.........I 1-' 1..1J 99.7llJ LL·.._.r Z 99.6 1-'" --' 1-.99.5 -t:l .<t::I '-..,......-~; N llJ.$:>0 ._1 99.4--- LLJ I-!oJ 99.':'5........::::r:.•;:1 99.2.-J L.L1u::99.1 99 - 98,9 Appendix Figure D-51. STATION (FEET) Cross sectional profile of Passage Reach VIII in Side Channel 21,October 15,1984. SI [)E C-~-lAf'~~,J E L-2 1 PASSAGE REACH IX 103 -t'i--- '102 .............-w W LL '''--'' Za 0 ~I '--.......,J"'" N WU1,-I W W .........0,:..- i--5 liJ ~ 101 100 ., -........., '.'-----~ '"99 -1 "'" 98 97 l ,./--~~~~ I~-------.~---I96_. [) ---r 20 4-0 1 I I 60 r- 80 r-~--r----l 100 ....- 120 Appendix Figure D-52. STATION (FEET) Cross ~ectional profile of Pas5age Reach IX in Side Channel 21,October 15~19B4. J J J I )]J ;)I J )t J .1 ,J !J ,1 J J -,1 ,-1 'j 1 1 )I.., ::;L_()LJ G ~~2 '~1 PASSAGE REACH I 1 03 -.---~-----.-------- 102 j~'- lLJ 101 W LL ~. 1 00 -- zo I-.,q: o '~:;:.- ~fl.J N __.J en W I..J..J>F ::5 ilJ Ll:: 99 98 97 "'~---.--............:-.-J -...............,' -~--.. \::------......_~.................-------\.-..1". 9 6 -I I I f r I -.-I ---,-- o 20 4-0 60 80 f I 100 120 Appendix Figure D-53s STATION (FEET) Cross sectional profile of Pa5sage Reach I in Slough 21,October 15,1984. SLOUGH 2 '1 PASSAGE REACH II J)],).J I ··-r·---- 60 80 ,II,~J -,-r-- 4-0 STATIO N (FEET) Cross sectional profile of Passage Rea~h II in Slough 21~October 15,1984. lJJJ Appendix Figure D-54. JJ, 100 99.8 99.6 ...-....99.4--I-W W LL 99.2 '-J' z 0 99 - 1-' c ,.::( I >98.8e-o lLJN ""-I .-1 IJ.J 98.6 l1.J;"::A. ~98.4--'<.t,-.J W [r':98.2 - 98 97.8 97.6 -T I 0 20 g 1 J ;J 1 1 ]1 1 ~3LC)lJG~--1 2'1 PASSAGE REACH III R 40 "I' /r r ~---I~"-'''-'''-~~'J .30 ",'" /' I 20 r I 1 [) ~\/ \. 1'- 100 99.9 - 99.8 99.7 ~ ...-...99.6~ lJJ 99 CoLL...,,) '''--,' .L 99.4-a ~99.3 0 >I.......w 99.2N~00 llJ W 99.1 > I--99-<1-_J W 98.9 -IX 98.8 98.7 98.6 - ("-5,:)ts.~ 0 Appendix Figure D-55. STATION (FEET) Cross sectional profile of Passage Reach IIIR in Slaugh 21,October 15,1984. C'LUlJ('H ')(),-).....:J L'-../ PASSAGE REACH I / ~ 100 99.8 - 99.6 - ..--...99.+-.-w W I..L 99.2 - '--./ Z 0 9S~ l- e ,<( I :>9f.L8 //\......w N ....JI,Q llJ W 98.6 -~> 1--98.4-.j 4' ...J .,..r.... Wa::98.2 -- 98 97.8 - +0 I---'--I97.6 --r--I 20 o I ~~_.I I l--t 60 80 Appendix Figure D-56. STATION (FEET) Cross sectional profile of Passage Reach I in Slough 22,October 14 7 1984. I J .J t J I )),_J J }J J ,•J t .1 A·····l 1 ))])-,}]1 ~3LOlJC;H 22 PASSAGE REACH II f '....-.-/ ./V/'\~'".~---/V I --.----r--.----r-I I I I I I I I 20 4-0 60 80 1 00 1 20 1 4-0 STATION (FEET) •I100.6 - 1 00.4- 100.2 100 ...-.....99.8 _.I-uJ W 99.6I.L...._",.. :z 99.4- a 99.2i--: c .<t:. 99 -...."".D. I ..... ~ww.-J0W 98.8 I..J...J 98.6........ / 1-...q 98.4-...JuJ 98.2 -cr.: 98 9"1 8 -I • _ 97.f) 97.4- 0 AppendiK Figure D-57~Cross sectional profile of Passage Reach II in Slough 22,October 14,1984. '100 99 .S~ 99.8 99.7 "........, I-99.6 _. l.JJ W LL 99.5-"·ft_or" ._/99.4-.........a I-99.3<:I'"c .' I :->.......w LLJ 99.2......_-..I W IJJ 99.1 - :~:~. 1-99 -.0::( ...-1 W 98.90.::: 98,8 - 98.7 _. 08 f-v'.) Ci8 .....;.'.::J 0 t __•L(.)U (--\H t-)f) ~_'-7 L-...__ PASSAGE REACH III \ \."'."'-, "-'\. \ '--....-----..... ----~/ \(\."~/:L-'/"""~ ................. -,I·-r----'-,---'--1----r,-r---r--~--r 4-8 12 16 20 24- STATION (FEET) r~----I 28 Appendix Figure D-58~Cross sectional profile of Passage Reach III in Slough 22,October 14,1984. _J !J t ;J -,J m J J J t I 1 1 J J - 0-132 APPENDIX E Stage and Discharge Data E-l -I ,.... APPENDIX E:STAGE AND DISCHARGE DATA This appendix contains stage and discharge data collected at selected slough and side channel passage study sites in the middle Susitna River. Appendix Table E-l is a summary of the stage data collected during the 1984 open water season.The rating curves developed for these stage data are presented in Appendix Figures E-l to E-6.A summary of local flow measurements collected at selected passage study sites is given in Appendix Table E-2. E-2 ~~ Appendix Table E-1.Comparison of water surface elevations to the mean daily mainstem discharge (cfs)obtained at the USGS gaging station at Gold Creek (USGS 15292000)~during the 1984 open water season. -WSEL Discharge Location Date Time (ft)(cfs) Mainstem 2 841005.1145 475.99 7,080 (114.4S1 at RM 114.4)840926 1330 476.08 7,680 840920 1355 476.08 "0,400 Slough 8A Mouth 841006 1128 560.74 6,780 ~ (125.351 at RM 125.3)840925 1500 561.11 7,890 840919 1520 561.51 9,390 840910 1609 561.58 9,890 840922 1415 561.70 10,300 840920 1630 561.72 10,400 Slough 9 Mouth 841013 1230 588.00 6,150 (128.3S4 at RM 128.3)840927 1030 588.36 7,470 -840930 1030 588.31 7,500 840926 0950 588.43 7,680 841001 1000 588.42 7,830 840925 1525 588.47 7,890 840915 1330 588.61 8,520 ~ 840911 1020 588.75 9,330 840911 1513 588.76 9,330 840910 1803 588.86 9,890 840906 1454 588.95 10,300 ~" 840922 1000 589.01 10,300 840920 1645 589.01 10,400 840909 1050 589.01 10,600 840907 1015 588.98 10,700 -840908 0945 589.05 10,900 Slough 9A Mouth 841008 1010 639.69 6,810 (133.2S1 at RM 133.2)841003 1643 639.71 7,680 840925 1610 639.72 7,890 ~ 840923 1020 639.74 9,010 840911 1018 639.75 9,330 840919 1600 639.78 9,390 840910 1821 639.79 9,890 840922 1550 639.87 10,300 840920 1715 639.96 10,400 840907 1020 639.96 10,700 840907 1505 640.00 10,700 Side Channel 21 Mouth 840924 1730 731.61 8,290 (140.658 at RM 140.6)840910 0950 731.96 9,890 840909 1650 732.13 10,600 840909 1110 732..14 10,600 840921 0930 732.39 11,400 Slough 22 Mouth 841001 ;335 778.92 7,830 (144.357 at RM 144.3)840924 1345 778.89 8,290 840908 1515 779.26 10,900 840921 0945 779.40 11,400 ~, E-3 i I~ r -I -~-=l'o..•+- i - tlUHSmt 2 Rtf 114.4 IIHE 114.451 u e • NOT CONTROLLED 7080.s Q ~10.400 cfs WSEL a 10.6713 Q.0282 +470 r 2 '"'0.44 1DI1AIMSIErtDISCHARQ£At G1I1.O CREEl<(1000Cf'S] Appendix Figure E-l.Mainstem discharge (Provisional USGS 1984) versus the water surface elevation at Mainstem 2 Side Channel. E-4 - SLOUGH 8ft "DUnt Rr1 125.3 SACE 125.3S1 - i BACKWATER 6780 So Q S.10.400 cfs WSEl •10-.6309 Q.3631 +555 r 2 '"'.0.99 10I1AINSt'Dt IJISCHflRQ£AT lD.O CREEl<(lor:D:fSl lID - Appendix Figure E-2.Mainstem discharge (Provisional USGS 1984) versus the water surface elevation at Slo~gh 8A mouth. E-5 """I f'" I SL.OUtilH 9 MOUTH RI1 128.3 SAGE 128.354 BACKWATER 6150 S 0 ~10.900 cfs WSEL •10-1.4996 0.5226 +585 r 2 •0.99 10ttflINS'I'DS DISCHARGE AT aLa CREEK (100CEf'S) liD Appenqix Figure E-3.Mainstem discharge (Provisional US~S 1984) versus the water surface elevation at Slough 9 mouth. E-6 'II SI..OtJGlH SA MOunt RI1 133.2 liRE 133.251 1ftn ~- NO BACKWATER 6810 S Q ~9890 cfs WSEl •10.4637 Q"0540 +635 ,,2 •0.90 ../ BACKWATER 9890 <0 S.10,700 cfs WSEl z 10-1"3290 0"5030 +635 ,.2 z 0.89 ..... i UIMINSTD!OISCHARQt AT l;(]IJJ CREEK (1000Cf'S1 UII Appendix Figure E-4.,Mainstem discharge (Provisional USGS 1984) versus the \>later surface elevation at S'lough 9A mouth. E-7 ..... i SID£CHANNEl.21 rumt 1m 140.8 SAfiE !-to.SSS BAOOIATER 8290 5.Q So 11.400 cfs "SEl •10-4·5407 Ql.Zl07 +730 ,.2 •0.99 lD f1fIINSm'I OISCHARIilE:fit lD.O CREEJ<(lOlXlCfSl lQJ Appendix Figure E-5.Mainstem discharge (Provisional USGS 1984) versus the water surface elevation at Side Channel 21 mouth. E-8 - BACKWATER 7830 ~Q i 11.400 cfs WSEL •10-.6376 Q.3147 +775 r 2 •0.96 - - - i 10 JIIIINSmt OISCHfIRQE AT lDJJ CR£EX (lOOCCf'SJ lID - Appendix Figure E-6.t1ainstem discharge (Provisional USGS 1984) versus the water surface elevation at Slough 22 mouth. E-9 Appendh Table E-2.Comparison of local flow measurements collected at selected slough, side channel and tributary study sites in the middle Susitna River to the mean dai ly mainstem discharge at Gold Creek (USGS 15292000) during the 1984 open water season. Measured Mainstem Flow Discharge Location Date Time (cfs) (cfs) Whiskers Creek Slough (Downstream of PR I)841004 1245 11.0 7,380 Whiskers Creek (Upstream of Slough Confluence)841004 1320 8.1 7,380 Hainstem 2 Side Channel (PR I)841005 1530 0.5 7,080 Slough 8A (PR VIIR)841007 1420 0.7 6,630 (PR IV)841007 1610 0.4 6,630 Slough 9 (PR II)840911 1550 2.9 9,330 (PR V)840911 1645 1 .1 9,330 Slough 9A 4.0(PR II)840911 1030 9,330 841008 1420 2.7 6,600 (PR V)840911 1150 3.2 9,330 (PR VI J)840911 1350 2.3 9,330 841008 1510 1.4 6,600 Slough 11 1005 4.3 31,700(PR III)840826 (PR IV)840826 1115 3.1 31,700 r (PR VI)840826 1220 2.1 31,700 Ii I Slough .19 (PR VI)841017 1515 0.1 5,400 Side Channel 21 (PR IX)841015 1325 2.0 5,800 (PR III)841016 1630 4.5 5,600 Slough 21 I)841015 1430 1.6 5,800(Upstream of PR Slough 22 841014 1610 0.7 6,090.(PR II) E-10 --------------------