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HomeMy WebLinkAboutSUS493. :"'" TO Aquatic Study Team Members FROM Stephen Bredthauer MEMORANDUM SUBJECT Eklutna Lake suspe~ded sediment, turbidity, and temperature da~a 1982-1984 OATE PROJECT 1110. 5-1-85 452418 Enclosed are summary data sheets and plots from the data collection program at Eklutna Lake. These plots summarize the temperature, turbidity, suspended sediment, and light penetration patterns observed at Eklutna Lake from 1982-1984. The complete data report will be submitted later this month. If there are any questions, please contact Jeff Coffin or Bill Ashton at 561-1733 I I II II u [) 0 n 0 I I I I I I I I I -Alii CONSULTANTS, INC. BKLUTNA LAKE STATION LOCATIONS FIG. 3.1 FOR • .._ E -:z: ... a. w eo &0 40 Q 30 w ¥ c _, 20 10 START MEASUREMENTS -- 7.0 5.0 6.0 o-JAN~~~~~~~~~~~~~~~·~~~~~--~--~ JAN FEB MARCH APRIL: MAY JUNE JULy AUG SEPT OCT NOV DEC PREPARED BY: PREPARED FOR : 8&0 800 ,... > ~ '" 7&0 '" ,... '" < > ~ 0 z .... -.. .._ 700 ~r.------------------ISOTHERM DEPTH vs. TIME EKLUTNA LAKE at STATION 9 1982 [}:{]£00~£c§(ID£®©@ R&M CONSULTANTS1 INC •. .......... ............ MY--....eTa ~-~··---SUSITNA JOINT VENTURE .... E ::r:: 1- CL w so Q 30 w ~ ~ ...J 20 10 ~3 -0 3 -5 ___ / 7.0 6.0 s.o 4 .0 I I ! n , ~. --··. 850 \ 4 .0 800 ,... > ~ m 750 m ,... m < > ... 0 z ---.... 700 OCT NOV 0 ~WN~FEI~MA.~~~~~~~~~~~~~~--~_L~l_--__ _j JAN FEB MARCH APRIL MAY JUNE JULY AUG SEPT DEC PREPARED BY : ~~------------------ R&M CONSULTANTS, INC • ........... •etkD .. a't'• MY-CM.Dei•Te ~U·~·Yo•• ISOTHERM DEPTH vs. TIME EKLUTNA LAKE at STATION 9 1983 PREPARED FOR : lMJ&[ru~& c ~00&®©@ SU SIT NA JOIN T V EN T U RE 50 40 .... E :J: 1-a. w Q 30 w laC c ~ 20 10 ) 4.0 I ~·: .r . • • PREPARED BY: ~r.------------------ R&M CONSULTANTS, INC • • NOINa .... O.D .. OOiaTa MYDJIIOLDOieTe eu .. ~•vo .. e -~ 5 .0 6.0 \ ' ' ~--..___, -. \ \ \ \ \ \ _,/ ISOTHERM DEPTH vs. TIME EKLUTNA LAKE at STATION 9 1984 ~~ \ . 6 .0 NOV PREPARED FOR : LAST LAKE SAMPLE TRIP ON NOV. 26 DEC 850 800 r-,. ~ m 750 m r- m < > .... 0 z --.... 700 [}{]£~~& c ~00&~©© SUSITNA JOINT V ENTIJRE II eo 4 3 .2 4 6 7 I SAMPLE fREQUENCY, TJP .I_} 50 40 ... E .... :z: ~ a. w Q 30 w ~ 10 c ~ 20 10 r . '• -,-~ ... " . \ ..... . I • / • • ' . . . . . ... PREPARED BY : ~~------------------ISO-TURBIDITY vs. TIME EKLUT"A LAKE at STATION 9 1982 R&M CONSULTANTS, INC • ......... _ .. ~ .... .,. ... , ......... ,.. ~-~·y-- 4 NOV DEC PREPARED FOR : 850 800 .... ~ ,.. ..... 750 ..... .... ..... < ~ -1 0 z 700 (}{]£00~& c §00£®©@ SUSITNA JOINT VENTURE j· I i I ! -E -::z:: ~ a. w Q w ¥ -< .J 50 40 30 20 10 10 . .... .. ·--·: r; .. \ ' . . 10 0~~~~~~~~~~~~~~~~~~==~--~------_j JAN FEB MARCH APRIL MAY JUNE JULy AUG SEPT OCT NOV DEC PREPARED FOR : 850 800 r- )> :lll: ,., 750 ,., r-,., < )> ~ 0 z 700 PREPARED BY: ~r.------------------ISO-TURBIDITY vs. TIME EKLUTNA LAKE at STATION 9 1983 [}{]£00~& c ~00&®©@ SUSITNA JOINT VENTURE R&M CDNSULTANTS1 INC. ........... eeOL.-IeT• M'Y_DL .... Te ~Ua'!!e'YIHie ' .. eo 2 2 (SAMPLE FRf.OUf.NCY~TJP .)J 3 3 2 19 5 4 \ LAKE SURFACE 50 40 " E ..... :z: ... 5 D. w Q 30 20 10 w :w: I < ...J 20 10 0-JW~~"'·~·M·~·~:~: ·~· .. ~:~,~·~:~\ ~~~~··~~~~~~~wr~~1\·\~~l_~ __ _j :. ,! • . J,. \ ·.': .I ' • JAN FEB MARCH APRIL· MAY JUNE JULY AUO SEPT OCT NOV DEC PREPARED BY: PREPARED FOR: 850 800 750 700 1'1 r 1'1 < J> ..... 0 z ~ - ~~------------------ISO-TURBIDITY vs. TIME EKLUTNA LAKE at STA '~:'ION 9 1984 (}{]£00~& c §[ID£®©@ R&M CONSULTANTS1 INC •. aNOIHeallle ··OL-Ia'l'a MVD.-.DelaTa ~U·~·'f/-· •• SUSITNA JOINT VENTURE ., •. M14/56 MONTHLY SUMMARY Of FIELD OBSERVATIONS -EKLUTNA LAKE 1. LAKE DATA-GENERAL Lake Lake Date llevation Depth Sampled (ft.msll _iml_ 3/23 837.9 54 .2 Q in (Mean Daily) 3 3 ( 10 m /daY I Q in (Mean Daily) {cfsl 2. LAKE DATA SUMMARY -TURBIDITY/SEDIMENT Time Depth Temp. Cond. (@ 25°C) Date AST Stat iQn _iml_ ~ {umhoLcm) 3/23 1315 5 20 4 .0 N/A 40 3.9 N/A 1030 9 20 4 .0 N/A 40 4 . 1 N/A 0920 15 5 4. 1 N/A NOTE: N/A = Not Available . ... :-·\:~·--........ : ~·: ;"':.,..~ ... -:~~ ~l r\; .... , .. . j : ...... o • o . I • J \ ,, .. '.~ 0 •• ·, ,, i :;_.~; '_;!i!:-L .. ·, L,~ Q out Q out (Mean Daily) ( Mean Da I I y) Stat ions 3 3 {10mLda~l {cfsl Profiled 1261 516 2,5,9,15 Quantum Depth Secchi Disk Extinction for 99% at surface Coefficient Extinct ion ! ft l {Lml {ml N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Month: March, 1984 Weather Remarks Clear 8c calm. Turbidity TSS {NTUl l!!!9.LU Remarks 3.2 3 .7 Ice thickness= 6 . 1 2.7 16". 4.2 2. 1 Ice thickness= 4.2 2.3 18". 3. 1 2.8 Ice thickness= 1811 • M14/56 1 . LAKE DATA -GENERAL Lake Lake Q in Date Elevation Depth (Mean Daily) 3 3 Samgled ( ft,ms II .im.L ( 10 m Lda:z:l 4/20/84 830.8 51 .1m 120 (est .) 2 . LAKE DATA SUMMARY -TURBIDITY/SEDIMENT Time Date AST Sta~ion 4/20 1110 15 1330 11 NOTE: N/A Not Available. Depth .im.L 1 5 2 24 Temp. ~ 3.0 3 .4 3.6 3.3 MONTHLY SUMMARY OF FIELD OBSERVATIONS -EKLUTNA LAKE Q in (Mean D~t i ly) (cfsl 49 (est .) Cond . (Q 25°C) (umhoLcm) N/A 131 129 N/A Q out (Mean Da i I y) 3 3 ( 1Q m Lda:z:l 1164 Secc h i Disk at surface ! ft I 7.5 6.8 Q OUt (Mean Daily) Stations (cfsl Profi I ed 476 15 &: 11 Quantum Depth Ex tinction for 99% Coefficient Extinct i on (Lml (ml 0.66 6.2 0 .60 7.05 Month: Apri I, 1984 wea ther Overcast, I ight breeze Turb id ity (NTUI 2. 1 1 . 8 2 .6 1.8 TSS .l!!!.9.L!.l 1. 3 0.47 1 • 1 0.55 Remarks Ice Thickness= 13.5-1411 Remarks Ice = 14' Sccchi and quantum done through ice. Ice = 13.5" s ecc h i and quantum done through ice . M14/56 MONTHLY SUMMARY OF FIELD OBSERVATIONS -EKLUTNA LAKE Month: May, 1984 1. LAKE DATA -GENERAL Lake Lake Q in Q in Q out Q out Date E tevat ion Depth (Mean Da i ty) ( Mean Da i I y) ( Mean Da i I y) (Mean Da i I y) Stat ions 3 3 3 3 Sam11ted ( ft,mst) _tmj_ ( 1Q m Lda~l (cfs) ( 1Q m Lda~l (cfs) Profited Weather Remarks 5/17/84 826 .1 50.6m 245 (est .) 100 (est.) 1102 450 5,9&15 Sunny, clear 2. LAKE DATA SUMMARY -TURBIDITY/SEDIMENT Quantum Depth Secchi Disk Ex tinction for 99% Time Depth Temp. Conr'. (@ 25°C) at surface Coefficient Extinction Turbidity TSS Date AST Station _tmj_ ~ (umhoLcm) ! ft I (Lm) (m) 'NTU I .l!!l9..LLl Remarks 5/17/84 1415 5 4 5 . 1 127 6.7 0.38 9 m 2.5 1.0 Var. sun- 20 4.2 127 2. 1 2.0 shine during quantum. 1050 9 4 6 .3 130 6 .4 0 .43 9 m 3 .8 1. 7 20 4.7 130 3.5 2 .0 1245 15 4 6.9 130 7.0 0 .47 6.4 m 3.0 1. 5 bottom -6.4m 3. INFLOW/OUTFLOW DATA Gage Water Height Instant. Mean Da i ty Temp. Conductivity Secchi Turbidity TSS Date Time AST Site ....li1L g (cfs) g (cfs) ~ t 2~0 C(umhoLcm) Disk (ftl _j'WU_ .l!!l9..LLl Remarks 5/18 1200 EF 2.43 77 65 5 .7 153 N/A 2.9 3.7 Gaging 1700 GF 2.00 16 N/A 7.4 77 N/A 38 48 stations installed Q's from measurements 5/22 N/A H 2 .118 73 73 5.6 140 N/A 3.2 2.2 \\ ;; N/A GF 2.07 20 20 2.2 93 N/A 45 18 .9 N/A TR N/A 6.7 129 N/A 4.2 2.5 5/25 N/A EF 2.49 74 74 4 .4 N/A N/A N/A 2.3 N/A GF 2 .03 18 18 3.9 N/A N/A N/A 11 N/A TR N/A 6 . 1 N/A N/A N/A 2.4 5/29 N/A H 2.47 71 71 2.0 132 N/A 2 .7 0.8 N/A GF 1. 93 14 14 0 .0 113 N/A 22 6.4 N/A TR N/A 7 .2 148 N/A 3.7 1.6 NOTE: Abbreviations used -N/A Not Available, EF = East Fork, GF = Glacier Fork, TR Ta i I race, TSS = Tota I Suspended Sol ids. Cl p· !;, ? r'\. r'l r\ rr." ~ r • ' • • ' l I \ ~-·; .•. , : ' . '.:,.> . ' .... :·. :. . \ 1'.{' . "' ! ,,, '-;·-· ~-·-\_\ 1-J M14/56 1 . LAKE DATA-GENERAL Lake Lake Date Elevation Depth Sampled (ft,msl l _iml_ 6/6/84 824.4 50.1 6/21/84 823 .1 49.7 Q in ( Mean Da i I y) 3 3 110 m /day) 784 1634 2. LAKE DATA SUMMARY -TURBIDITY/SEDIMENT Time AST 6/6/84 N/A N/A N/A N/A 1(, N/A 6/21/84 1725 1620 1510 1250 Depth Station _iml_ 2 5 9 11 15 1 2 3 9 15 0 13.5 0 9 0 13 0 3 0 11 10 14 20 2 7 12 20 2 6 20 4 Temp. ~ 11. 1 6.6 10 .7 8 . 1 10 .0 7.5 9.8 8.2 9.3 8.0 10.0 6.9 6 .0 13.9 12 .4 8 .7 5.6 12 .9 11.4 5 .6 11. 1 MONTHLY SUMMARY OF FIELD OBSERVATIONS-EKLUTNA LAKE Q in ( Mean Da i I y) lcfsl 320 668 Cond . (@ 25°C) (umho/cml 140 1110 1111 145 141 141 135 138 132 120 108 109 115 104 107 112 N/A 107 116 119 116 Q out ( Mean Da i I y) 3 3 110m /day) 937 1075 Secchi Disk at surface ( ftl 7.5 9 .0 8.0 8.5 8.5 3 .2 3.6 3.8 6 .0 4.5 Q out (Mean Daily) (cfsl 383 439 Quantum Ex tinction Coefficient 1/ml N/A N/A N/A N/A N/A 1. 76 1.04 1. 33 0. 73 0.71 Stat ions Profiled 2,5,9,11, 15 1,2,3,9, 15 Depth for 99% Month : June, 1984 Weather 100% overcast light rain, moderate wind from North. r~o s t 1 y c 1 ear, I ight wind from NW Remarks Q in only for EF and GF Q includes EF, GF, and est . Q for 3 stre ams on the north shore. Extinction Turbidity TSS (ml (NTUI l!!!.9.LU Remarks N/A N/A N/A N/A N/A 2.8 4.8 3.7 6.4 6.3 ,.. ..... r .. i .. t.; t • •••• -•• 3.3 4 .4 2 .1 11. 3 2 . 1 2.3 2. 1 2.2 5.2 71 30 15 6.4 7 .2 14 28 6 .2 4 .8 6 .2 3 .4 5.0 2.0 N/A 1.3 3 . 1 1.9 N/A 1. 4 N/A 2.5 134 25 13 14 4.8 10 24 8 . 1 3 .0 3 .3 1.3 3. 1 'I r..... r~ ,.., ....,. 1"11 ~ r.-.,. "' I 1 • , • • ,\ , ; ! \ {'} ~) '1 ~t/ . . ' . . .. ~ l:. \'1 !·: ·:'; .. ;: _f . ' \ fi· 1 I 1 \• : '• I, •,' : • • ,.. • o .. f • J \ 4> ._J \. l L ) "' .. 3. INFLOW/OUTFLOW OATA Month: June, 1984 Gage Water Height Instant. Mean Daily Temp. Conduct i vi ty Secchi Tu r bidity TSS Date Time AST Site __lltl_ g (cfsl g (cfsl ~ i 2:2°C(umhoLcml Disk (ftl (NTUI i!!J.gL!J. Re marks 6/1 1200 EF 2 .43 83 87 7 . 1 N/A N/A IL8 3 .2 1100 GF 1. 90 13 17 5.9 N/A N/A 32 7.6 N/A TR N/A N/A 375 7.8 N/A N/A 4.3 0.9 6/5 11 28 EF 2.73 162 162 6.4 120 N/A 12 12 1025 GF N/A N/A 5 8 2.6 71 N/A 77 77 N/A TR N/A N/A 345 N/A 128 ti/A 4.0 1 . 5 6/8 1245 EF 2 . 71 155 165 5 .6 123 N/A 12 4 .0 12 20 GF 3 .05 113 10 2 1. 9 81 ti/A 120 30 1 1444 TR N/A N/A 392 8.5 150 N/A 3 .0 0.5 6/12 11 30 [f 2.80 187 187 5 . 1 11 0 1.5 2 .4 12 1250 GF 3 .08 118 118 1.9 64 0.4 120 128 N/A TR N/A N/A 405 11 . 3 144 4 .0+ 4.6 2 6/15 1255 [f 2.78 179 179 4.8 10 8 1.5 21 6 1335 GF 3 .07 116 111 1.6 6 0 0 .4 1110 135 1547 TR N/A N/A 480 11.6 144 4.0+ 5 .6 2 6/19 1050 EF 2.92 237 261 6.2 104 1 . 1 34 26 1130 GF 3. 37 177 194 2.4 77 0.2 ' 500 526 1410 TR N/A N/A 460 11.2 143 4.0 8 4.0 6/22 10 50 [f 2 .91 261 304 5.9 91 0 .5 78 77 1050 GF 3.66 256 2 5 6 2.3 59 0.3 180 15'• II 1355 TR N/A N/A 430 12 .8 1119 3. 3 8 .0 2 .4 6l?6 1045 [F 3.09 327 3116 4. 1 86 0 .3 290 257 1130 GF 3.84 317 252 1 . 4 66 0 .25 4 20 3111 N/A TR N/A 0 0 Power pl an t shut down . 6/29 1000 (f 2 .99 271 310 5.5 80 0 .5 130 83 1025 GF 3 .90 340 356 2 .4 55 0 .25 3 5C 297 N/A TR N/A N/A 184 N/A N/A N/A N/A N/A No s am ple t ake n . NOTE: Abbreviations used -N/A Not Available, EF = East Fork, GF = Glacier Fork, TR Ta i 1 race, TSS =Total Su s pended So I i ds. .• r r \ ,·--..,-,.. ,; ' I ! . ' -..... MONTHLY SUMMARY OF PROVISIONAL FIELD OBSERVATIONS -EKLUTNA LAKE 1. LAKE DAlA-GENERAL Lake Lake Date Elevation Depth Sa mp I e d .l[.t ....!!!§..!L --.l!!!l._ 7/5/84 826.4 5D.7 7/19/84 835.1 53 .4 Q in (Mean Daily) 3 3 (10m /day) 2,560 1 '956 2. LAKE DATA SUMMARY -TURBIDITY/SEDIMENT 7/05/84 II ·! 7/19/84 Depth Time AST Station --.l!!!l._ 1730 1600 1445 1330 1220 1515 11100 1300 1 2 3 9 15 2 3 20 4.0 9.0 20 2.0 8.0 16 24 2.0 14 32 4.0 2.0 6.0 6.0 10 16 28 2 .0 8.0 16 28 Temp. ~ 9.6 15. 1 12.4 5.8 15.0 11. 3 8 .0 5.4 14.0 7.9 5.4 11.9 14.2 7 .0 13.9 10.5 8.3 5 .6 14 .0 11.6 8.3 5.3 Q in (Mean Daily) ( cfs l 1,046 799 Cond. (@ 25°C) (umho/cm) 111 71 110 131 145 75 116 126 154 106 127 153 128 112 125 113 119 132 128 125 116 125 Q out (Mean Daily) 3 3 ( 10 m /day) 1 '074 406 Secchi Disk at surface ( ft) 2 .5 2.0 2.0 1 . 9 1.6 1. 2 1.3 1.3 Q out (Mean Daily) (cfsl 439 166 Quantum Extinction Coefficient (Jm) 1. 96 1. 45 1.43 1. 51 1. 59 2.18 2 . 13 1.99 Month: July 1984 Stat ions Profiled Weather 1,2,3,9,15 Clear to overcast, winds first Ollt of WSW, then NNW 1,2,3,9,15 Overcast, som e drizzle winds frorn calm to strong, from the NW. Depth for 99% Extinction 2 .5 3. 1 3 . 1 3 . 1 2.8 2.0 2 .1 2.2 '·' Turbidity TSS (NTU) .l!!!.9.L!l 128 6.4 80 6.8 6.6 22 18 3.5 13 26 3.4 14 26 64 28 61 56 18 26 58 58 16 I ' •• -":'"., 202 5.0 115 8.0 6.0 13 22 5.0 9 .0 15 3.0 8 .0 3.0 29 2.0 25 7 .7 3.6 2 . 1 4.9 12.4 5.0 Remarks Qin does not include streams on the north shore Lake elevation is that given for 7/20 in the AP Admin monthly summary. Qin in- cludes the two major streilms d ra in i ng the north shore. Remarks r MONTHLY SUMMARY Of PROVIS I ONAL FIELD OBSERVATIONS -EKLUTNA LAKE Month : July 1984 2. LAKE OA 1 A SUM11ARY -TURBIDITY/SEDIMENT (Cont i nued) Quantum Secchi Disk Extinction Depth Depth Temp . Cond . (@ 2 5 °C) at surface Coefficient for 99% Turbidity TS S !>~ Ti me AST Stat i on _1_&_ ~~ (umhoLcm) I ft l (Lm) Ex tinct i on (NTU) 1..!r!9L.L1 Re marks 7/19/84 1050 9 4 .0 12 .9 125 1.2 2 .24 2.02 5 2 3 .3 Th n li g ht e x- 16.0 8 .6 12 5 2 .25 1. 98 37 IL 6 t i nc ti on me a- 36 .0 5.5 125 . 35 3.8 s11rements were run twice yielding d i f- ferent value s. 0950 15 4 .0 11.8 125 1. 3 2.43 1.89 56 4 .4 3 . INfLOW/OUTFLOW DATA Gage Water Height Instant . Me a n Da i ly Te mp. Conductivity Secchi Turb i dity TSS Da te Time AST Site ....1..f.1.L Q (cfs) Q (cfs) ~ @ 22 °C( umhoLcm) Disk (ftl (NTU) 1..!r!9L.L1 Re marks 7/U84 1045 u 2.90 2 28 22 8 ll .9 8 5 0 .5 88 ll8 1120 Gf 3.94 356 356 1.4 34 0 .2 580 514 N/A TR 1.84 N/A 434 11 .9 144 1 . 8 18 6.0 Ga ge height from staff n ea r the right edge of water 7/6/84 0 920 H 3.26 41l4 519 6 .4 N/A 0 .2 lllO 156 Tempat1110 ,,, 1610 Gf 4 .54 674 597 1. 6 N/A 0.2 430 568 AST Se cchi 2014 TR 1.90 N/A 355 12 .2 N/A 1.8 17 4.7 from LB d/s of bridge 7/10/84 1119 H 3.27 ll52 460 6 .0 78 0.5 88 72.5 Te mp , turb, 1226 Gf 4. '16 622 603 N/A 55 0.2 500 • 572 TSS , Cond & 1518 TR 1. 73 N/A 156 N/A 142 1 . 4 2 2 9 .0 Secch i from LB 10m d/s of b ri dge 7/13/84 1056 H 3 . 11 340 359 5.0 75 0.5 6lj 53 T=Tryan + 1207 Gf 4.23 490 ll80 N/A 49 0.2 lj J O 417 0 .5 °C 1425 TR 1 . 19 N/A 160 N/A 143 1 . 1 2 8 18 7/17/84 0953 H 3.0 6 310 321 4.6 76 0.5 66 50 1050 Gf 4.07 412 417 0.9 44 0 .3 220 248 1319 TR 0 .91 N/A 156 10.0 134 1.3 31 9.0 N0TE: Abbeviations used -N/A = Not Ava i I able, H = East Fork, GF = Glacier Fork, TR Ta II race, TSS =Total suspended So I ids. ,..., ... :\~ ,~, ~;?.~ . ' ~ l. •• •.s . \ i ·i .• u MONTHLY SUMMARY OF PROVISIONAL FIELD OBSERVATIONS -EKLUTNA LAKE Month: July 1984 3 . INFLOW/OUfFLOW DATA (Continued) Gage Water Height Instant. Mean Daily Temp. Conductivity Secchi Turbidity TSS Date Time AST Site _j__[U_ a (cfs) a (cfs) ~ @ 25 °C( umho/cm l Disk lftl I NTUl lliL.U Remarks 7/20/84 1600 [F 3.08 321 304 6 . 1 75 0.8 96 45 1640 GF 4.16 1155 431 0 .8 35 0 .4 216 264 1800 EF 3.09 327 5.6 74 0.7 110 61 1830 GF 4.10 426 1. 6 34 0.4 224 246 2000 EF 3 .09 327 5.6 73 0.7 11 0 64 20 30 GF 4 . 15 450 1. 6 34 0 .4 232 216 2200 EF 3.08 321 5.6 73 0.6 108 50 2230 GF 4. 11 431 1.6 38 0 .4 224 216 2 400 [F 3.07 316 5.0 74 N/A 108 50 7/21/84 0030 GF 4. 11 431 511 1 . 6 38 N/A 230 226 0200 EF 3.06 310 372 5.0 74 N/A 105 45 0230 GF 4.10 426 1. 6 38 N/A 250 213 01100 [F 3.06 310 4.4 78 0.7 107 42 0430 GF 4 . 11 431 1 . 6 38 0.4 240 259 0545 [F 3.06 310 4 .4 78 0 .7 83 38 0610 GF 4 . 12 436 1. 6 41 0.4 210 263 0830 EF 3.05 304 5.3 82 0.8 66 46 0900 GF 4.14 445 1.4 37 0.3 250 247 1030 EF 3.07 316 6.4 71 0 .7 73 45 1100 GF 4.21 480 1. 9 39 0.3 260 293 1230 EF 3. 12 346 8 .3 69 0.5 102 73 1300 GF 4. 32 539 2 .5 32 0.3 250 271 1430 EF 3 .1 6 372 8.9 69 0.5 1211 102 1500 GF 4 . 35 556 2.5 30 0.3 260 313 '\l·. 1630 H 3.21 407 8.9 61 0.4 160 188 1700 GF 4.39 579 1 .6 27 0.3 310 493 1 2000 TR 0.72 N/A 144 11.9 135 1.2 31 6. 1 1 7/24/84 1010 EF 3.20 400 444 5 .8 62 N/A 196 132 1120 GF 4 .39 579 591 1. 8 34 0.3 370 228 1440 TR 1.49 N/A 164 11 .7 130 1. 4 36 6.8 7/27/84 1010 EF 3 .11 340 379 5.6 67 0.5 411 53 All cond & 1050 GF 4 .31 533 533 1. 7 36 0.3 144 297 tu r b values 1320 TR 1 . 21 N/A 144 11.4 130 1.4 20 36 for these dates are 7/31/84 1025 EF 3. 16 372 400 6. 1 56 0.6 50 58 from 1105 GF 4.33 545 550 1.7 34 0.2 146 373 Chem/Geo. 1410 TR 1. 41 N/A 147 11.4 120 1.4 18 3 .3 NOTE: Abb e viations used-N/A =Not Available, EF = East Fork, GF = Glacier Fork, TR = Ta i I race, TSS =Total Suspended Solids. Chem/Geo =Chemicals & Geological Laboratories of Alaska, Inc., d/S = Downstream, LB = Left Bank, RB = Right Bank ·-.. " L 1 . LAKE DATA-GENERAL Lake Lake Date Elevati o n De p t h Sampled (ft.msl l _iml_ 8/3 840.6 55.0 Q in (Mean Daily) 3 3 1 10 m /day ) 3040 8/16- 8/20 8 1l5.2- 849 .8 56.4-2790-4360 57 .9 Qm=3575 2. LAKE DATA SUMMARY " Time De p th Te mp. D11te AST Stat ion _iml_ ~ ~/03 1130 1 . 0 15 .0 3.0 9 .0 1300 2 4 .0 14.5 8 .0 1 1 . 1 16 10.2 32 6.0 1500 3 2.0 15.7 8 .0 1 1 . 1 16 9.5 28 6.3 1700 9 6 .0 , . 7 MONTHLY SUMMARY OF FIELD OBSERVAT IO NS -EK LUTNA LAKE Q in ( Mean Da i I y) (cfs l 1243 1140-1782 Qm = 146 1 Cond.(@ 25°C ) (umhoLcm) 137 116 133 125 106 138 135 12 1 103 132 120 Q out (Mean Daily) 3 3 1 10 m /d ay ) 329 340-347 Qm=345 Secchi Disk at surface 'ft l 1. 9 1.7 2.0 1 . 8 Month: August, 19811 Q out ( Mean Da i I y) S tations (cfs l 134 139-1 42 Qm=141 Quantum Extinction Coefficient (Lm) 2.75 1. 78 1 .85 2.0 5 Profiled Weather 1,2 ,3,9,15 Overcast. Calm in the morn- ing, strong-wind out the W in the afternoon, abating 1-15 Depth f or 99% Extinctio n (m) 1.9 2.7 2 .5 2 . 1 ': in the evening. 8/16. Mostly sunny with a I ight wind from the east. waves approx. 0.2ft . 8/17. Mostly cloudy to overcast. Light to strong wind moving from SSE early to WNW in the afternoon, to NNW in the evening . NW later. 8/18 . Overcast. Strong wind first from NNW, then shifting at 1050 to b low f r om SSE . Waves 1-2 ft. 8/19. Light rain in the morning, ending after noon. Winds from NNW cal m early building in the afternoon raising the wave hei g ht from 0.1 to 1 ft. 8/20. Mostly cloudy. Wind shifted from SSE in the morning to NW after noon. Turbidity TSS (NTU) .lm9L!l Remarks 9.5 3. 7 29 111 9.8 2.6 20 1 14 118 66 5.6 11 11 2 .4 22 22 43 56 8.7 9.5 22 8 .0 , ....., r-1 !"""'~ ~ n r.1"\~~ •• • • ' • ~ : • • ~ •• ~ ; • ••• ,i . . . ; . ! \ . \ ···.! · ·. · ~-J·u tJ MONTHLY SUMMARY OF FIELD OBSERVATIONS -EKLUTNA LAKE Month: August 19811 2. LAKE OA1A SUMMARY Quantum Depth Secchi Disk Extinction for 99% Time Depth Temp. Cond. (@ 25 °C) at surface Coefficient Ext i net ion Turbidity TS S Date AST Stat ion ___l!!!L ~ (umho/cml ( ft) I! in) lml I NTU I 1.!!!9L!J. Remarks 8/0J 28 6.4 136 7 .4 3.5 2100 15 4 .0 11.9 131 1.5 2.47 1. 8 13 2.3 8/16 1740 15 6.0 11. 1 105 1 . II 2.58 1 . 8 116 11 8/17 0910 14 2.0 13.8 137 1.3 2.28 2 . 1 38 4 .2 10 9 .7 13 9 47 8 .7 20 8 .4 126 58 11 1150 13 2.0 14 .2 118 1. 4 2.29 1.8 30 4 .2 12 9.4 130 44 5.5 28 7 .2 127 25 6 .4 1330 12 2.0 13.6 133 1.3 N/A N/A 32 3.9 16 8 .6 109 117 4.4 1600 11 6 .0 11.7 126 1.4 2. 11 2.1 42 13 16 9.2 113 35 3.9 36 5.6 130 9.0 1.2 1900 10 30 6 . 1 122 1 . 6 2.17 2 .0 10.2 2.0 8/18 0910 9 6.0 10.2 129 1 . 5 2.34 1.9 30 5.9 16 8 .7 116 75 31 44 5 .4 136 5.5 1.1 8/19 1250 8 6.0 11.0 128 1 . 5 N/A N/A 56 2 6 24 7.9 125 56 2 7 II 44 5 .4 147 4.7 1.9 1000 7 6.0 11.5 131 1.1 N/A N/A 35 3 .9 I 20 8.7 1 32 48 21 40 5.4 149 5.3 2.3 1500 6 2.0 10.6 131 1 . 0 N/A N/A 118 23 20 9 .2 1 20 70 35 44 6.4 143 25 21 1750 5 4 .0 11 .5 130 1 . 1 N/A N/A 40 13 24 8.7 12 1 65 30 44 5.8 154 10.5 4.0 8/20 1020 4 8.0 12 .1 133 1.6 N/A N/A 37 7.8 24 8.0 1 36 50 28 44 5.4 160 8 .5 3 .0 1240 3 6 12.2 121 1. 4 N/A N/A 40 6.8 20 8 .4 11 3 72 40 30 6 .0 148 11.5 10 1430 2 2 12 .8 132 1.4 N/A N/A 36 8.0 16 9.4 109 115 61 36 5.8 14 0 12.5 11 1630 1 12 .8 134 1.5 N/A N/A 36 9.4 6 12.8 136 35 4.0 12 12.0 127 100 47 -.-·. -· :-... -~ !'"'1'""1 ,., ,., ~ n '1 ITrn ~-~ • I ' :' ',',? 't .. '·' ~·. I ,. :. ~:. ~· '1/'1 . . . '\ LJ . •'. ~--l ~ MONTHLY SUMMARY OF FIELD OBSERVATIONS -EKLUTNA LAKE 3. INFLOW/OUTFLOW DATA MONTH: August, 1984 Gage Water Height Instant. Mean Daily Temp. Conduct i vity Secchi Turbidity TSS Date Time AST Site ..J..llL Q (CfS) a (cfsl ~ @ 25°C( umho/cml Disk ( ft) INTUl 1JngLU Remarks 8/3 1134 EF N/A N/A 476 7.0 N/A N/A 70 126 l~ean Daily Q 1237 GF 4.61 722 687 2.7 N/A N/A 130 380 is estimated 1520 TR 1. 57 N/A 134 11.5 N/A N/A 16 4.2 for EF 8/7 1030 EF 3.36 527 483 6.5 50 0.3 85 143 Mean daily 1300 GF 4.74 818 772 2.7 20 0.2 156 470 Q estmiated 1530 TR 1. 80 N/A 146 11.4 121 1 . 3 20 5. 1 for EF 8/10 1121 EF 3.28 460 493 5.1 N/A 0.6 55 75 1210 GF 4.55 680 694 1.4 N/A 0.2 140 370 1410 TR 1.67 N/A 143 10.8 N/A 1.4 19 3 .2 8/14 1015 EF 3 . 10 333 365 4.7 65 0.6 76 44 1100 GF 4.29 522 562 1. 6 27 0 .3 196 262 1200 EF 3. 13 352 6.2 61 0.6 84 89 1230 GF 4 .41 591 1.9 24 0.2 220 217 1400 EF 3.17 379 7.5 60 0.6 104 56 1500 cr 4.4~ 616 1.7 24 0.2 228 31.19 1600 EF 3.20 400 7.5 57 0.6 96 82 1700 GF 4.49 641 1.4 2 1 0.4 220 336 1800 EF 3.24 429 6.8 55 0.5 132 123 1900 GF 4 .45 616 1.3 19 0. 3· 204 290 1930 EF 3.25 436 5.9 58 0.4 120 110 20 15 GF 4 .46 622 1 . 2 21 0.4 180 235 2300 EF 3 .24 429 11.5 64 N/A 116 N/A 2330 GF 4.35 556 1.1 26 N/A 188 N/A '·· 2400 EF 3.22 414 4.4 61 N/A 108 78 I 8/1.5 0030 GF 4.34 550 562 1.0 26 N/A 160 215 S taff gage 0200 EF 3. 18 385 392 4. 1 64 N/A 120 96 removed 0230 GF 4.28 517 1 .0 31 N/A 180 228 from TR. 0430 H 3. 16 372 11.0 61 N/A 96 66 0500 cr 4 .26 506 0.9 N/A N/A 180 2114 0600 EF 3. 14 359 3.9 64 0.5 80 51 0630 GF 4.22 485 1. 0 31 0.3 188 226 01100 EF 3.12 3116 3.9 64 0.5 88 1t8 011311 cr 4.?0 4 '/5 1.0 2 6 0 .3 192 216 1000 EF 3. 12 346 IL6 72 0.6 66 5 1 1030 GF 4.22 1185 1.3 42 0.2 196 2 2 5 1200 EF 3. 14 359 6.5 113 0.6 72 48 1230 GF 4.38 573 1.8 89 0.2 180 331 N/A TR N/A N/A 146 10.0 N/A 1 . 1 26 3.0 8/17 1130 EF N/A N/A 421 5.8 N/A N/A 100 64 1215 GF 4.47 628 609 1. 5 N/A N/A 205 247 1440 TR N/A N/A 143 9.5 N/A N/A 38 26 NOTE: AbbrevIatIons used -N/A = Not Available, EF East Fork, GF Glacier Fork, TR Ta i I race, TSS = Tota I Suspended Sol ids. ,.. ··., :---_,, r~ .. ;;--: r'i ~ f?i. ~ ~ ~ ,., f1b. ~ ~ • ' ·! " 1 . f •• ,, , 1\ p . . . -. . . . .' . i I.':~.'·.;--~ ;~·i !,:. ':.~~ /if'\~ ~t:f! li I '• ;'I ' :'I ~·; :''• .';! .. ·, .. , ~~·.::_:;~, )•~'r ' . . • .. .. . ..• .. ..... l • .• t!l ~ c:\ .... \.l MONTHLY SUMMARY OF FIELD OBSERVATIONS-EKLUTNA LAKE Month: August, 1984 3 . INFLOW/OUTfLOW DATA (Continued) Gage Water Height Instant. Mean Daily Temp . Conductivity Secchi Turbidity TSS D<lte Time AST Site __ifll_ g I cfs l g (cfs) ~ @ 2:!0 C( umhoLcm) Di sk I ft l (NTU) .LJngL.U Remarks 8/21 1035 EF 3. 12 346 392 4.8 N/A 0 .7 110 91 1111 GF 4.41 591 597 1.5 N/A 0.3 370 429 1307 TR N/A N/A 1113 11.4 N/A 1.4 46 19 8/24 1110 EF 3.06 310 519 5.0 N/A 1.0 53 76 1200 GF 4.55 680 707 2.0 N/A 0 .5 170 270 1410 TR N/A N/A 139 10.5 N/A 1 . 1 1 2 15 8/28 10 30 EF 2.86 211 219 3.7 N/A 0.9 27 18 Q lnst. From 1300 GF 4.01 386 381 1.4 N/A 0.2 220 280 discharge 1930 TR N/A N/A 146 10 .3 N/A 1. 3 26 5.0 measurements on EF & GF NOTE: Abbreviations used-N/A =Not Available , EF =East Fork, GF =G lacie r Fork, TR =Tailrace, TSS =Total Suspended Solids. Chem/Geo =Chemica l & Geological Laborator ies of Alaska, Inc., d/s =Downstream, LB =Left Bank, RB =Right Bank ·-,""i r: . . '. I M14/30 MONTHLY SUMMARY OF FIELD OBSER~ATIONS-EKLUTNA LAKE Month : September, 1984 1 . LAKE DATA -GENERAL Lake Lake Q in Q in Q out Q out Date Elevation Depth (Mean Da i I y) (Mean Daily) (Mean Daily) (Mean Daily) Stat ions 3 3 3 3 Sam~ led 1 ft,msll __li!l_L I1Q m Lda~l jcfsl I 10 m Lda~l jcfsl Profiled Weather 9/3 858.4 60.5 947 387 350 143 1,2,3,9,15 Clear, calm. 9/17 860 .2 61.0 819 335 390 159 1,2,3,9,15 Overcast, calm . 2. LAKE DATA SUMMARY Quantum Depth Se cchi Disk Ex tinc tion for 99% Time Depth Temp . Cond . (@ 2~°C) at s urface Coefficient Ex tinction Tu r b i dity TSS Date AST Station __li!l_L ~ jumhoLcm) 'ftl ILml lml I NIU l .l!!!.9L.!1 Remarks 9/03 1620 6.0 10.5 129 1 . 6 N/A N/A 55 2.6 12 9 .6 122 35 13 24 7.6 12 6 33 12 1510 2 4 .0 10 .6 12 5 1 . 5 N/A N/A 23 6.1 24 7 .7 112 35 15 40 6.0 127 13.2 II, 7 1730 3 0.0 12 .5 138 1. 6 N/A N/A 22 4.2 20 8.2 126 16.0 8 .5 44 5.5 155 7 .6 3 .4 9 4.0 10.5 114 1 . 4 N/A N/A 22 3.2 20 8.3 114 50 21 44 5.8 139 13. 1 1. 9 1100 15 4.0 10 . 1 113 1.4 N/A N/A 25 3.4 9~,17 1730 1 1 . 0 9.0 138 1.4 2 .24 2 . 1 14.5 7 . 1 1630 2 2 10.4 130 1.5 1.57 2.9 16 .0 3 .4 10 9 .8 124 17.5 3 .2 20 8. 1 129 25 8 . 1 40 6. 1 148 10 .5 2.9 1500 3 1 10 .4 127 1. 5 1 . 60 2.9 15.5 3 . 1 10 10.0 121 17.0 1.9 28 6.7 135 17.8 3. 1 40 5.9 144 9.5 3.0 1245 9 6.0 10 . 1 126 1.7 1. 64 2 .79 2 3 2 .0 20 8 .2 122 2 9 3.6 56 5 .2 151 18 2.0 1000 15 6.0 10.0 121 1.6 1 . 54 2 .97 30 1.6 -, ......... .,...., r-r"' .., n ~ i'!'\ ,_ ; ,: \ ~ ',' _,' I ' j: t • \ , I ..... -~ ( l MONTHLY SUMMARY OF FIELD OBSERVATIONS-EKLUTNA LAKE 3. INFLOW/OUTFLOW DATA I~ONHI : September, 1984 Gage Water lieight Instant. Mean Oa i ly Temp. Conduct i vi lY Secchi Turbidity TSS Date Time AST Site ...1.ll.L a I cfsl a lcfs) ~ 0 25°C( umho/cm l Disk lftl IN TU ! .l!!!9.LU Remarks 9/1 1100 EF 2.65 137 140 4.2 104 1. II 7.0 7 .4 1145 GF 3.41 166 194 1.1 40 0.4 120 203 1500 TR N/A N/A 147 9. 1 92 1 . 1 36 1 1 9/4 1315 EF 2.61 96 102 5.5 105 1 . 4 9 .0 4.6 1420 GF 3.30 161 161 1. 4 29 0.5 65 67 2055 TR N/A N/A 149 9.5 102 1.1 32 2.6 9/6 1030 EF 2 .59 120 13 1 3 .9 104 1 . 4 10 .5 5.4 1115 GF 3 . 19 136 1116 1.5 116 0.6 95 107 1330 lR N/A N/A 1111 9.5 116 1 . ,, 25 9.3 9/11 1010 EF 2.56 117 125 3.6 1011 1.4 10 .6 0.6 1050 GF 3.02 106 123 1.1 °C 1~3 0.5 90 102 1314 TR N/A N/A 161 9. 1 111 1. 4 24 4 .4 9/14 1023 EF 2.69 1 1~9 167 4.7 1011 1 . II 17.5 16 11 06 GF 3 .29 159 199 1 .1 35 0.11 57 163 1310 TR N/A N/A 141 9 .9 116 1.7 19 .7 4.5 9/18 1030 [F 2.56 112 112 4.5 112 1 . 4 11 . 5 4 .4 111 7 GF 3 . 13 127 129 1. 4 116 0. 5· 127 126 1300 TR N/A N/A 159 9. 1 113 1 . 6 24 5 .6 9/21 10115 [F 2.47 92 92 2 .7 108 1 . 4 2.9 3.8 GH & r~ean 1120 GF 2.32 79 7 9 0.7 70 0.5 100 72 Oa i I y a est It, 1310 TR N/A N/A 169 8.9 98 1. 6 13.4 5.2 for EF. I 9/2.5 1100 H 2.42 61 83 4.6 131 1.4 2.2 1.7 GH &: Mean 1130 GF 2 .70 65 69 1.6 54 0.8 49 45 Daily Q est 1345 TR N/A N/A 168 8.9 129 1 . 7 13. 3 2 .5 for EF 9/28 1115 EF 2 .40 78 83 4.3 N/A 1.3 1. 95 1 . 1 1145 GF 2.61 56 62 1.3 52 N/A 31 36 1310 TR N/A N/A 150 8 . 1 112 2.0 12.0 5 .0 NOTE: Abbreviations used: N/A =Not Available, EF = Ea st Fork, GF Glacier Fork, TR=Tailrace, TSS = Tota I susp ended Sol ids. Chem/Geo =Chemical &: Geological Laboratories of Alaska, Inc ., d/s = Downstream, LB = Left Bank, RB = Right Bank. .......... M14/56 MONTHLY SUMMARY OF FIELD OBSERVATIONS-EKLUTNA LAKE Month: October, 1984 1 . LAKE DATA -GENERAL Lake Lake Q in Q in Q out Q out Date Elevation Depth (Mean Daily) (Mean Daily) (Mean Daily) (Mean Daily) Stat ions 3 3 3 3 Silm~led ( ft,ms ll .i!!lL (1Q m Lda:il (cfsl ( 1Q m Lda;i) (cfs) Profiled Weather 10/01 861.9 61.5 1350 552 459 187 1,2,3,9,15 C;~lm i n a.m. Light ext i nction Wind picking me asurement and lip to 18 mph turbidity pro- in p.m . in-file were not termittent run at Sta. 15 rain. because of darkness . 10/15 862 .7 61.8 349 143 401 164 1,2,3,9,15 Cloudy, cold Turbidity pro- mostly calm. file not run; pump not rune- tioning . 10/29 862.4 1)1.7 216 88 912 373 1,2,3,9,15 clear, calm, Turbidity pro- cold. file was not run beca use of a pump malfunction. 2 . LAKE DATA SUMMARY Quantum Depth Secchi Disk Ex t i net on fo r 99% Time Depth Temp. Cond . (@ 25 °C) at surface Coeffic ent Extinction Turbidity TSS ~ AST Station .i!!lL ~ (umhoLcm) I ft I (Lm (ml (NTUI 1..!!!9.L.U Remarks I 1~f.01 1130 1 2.0 4 .0 132 0 .6 13. 1 0 .3 220 95 1330 2 4.0 8.7 131 2 .2 1. 30 3 .4 13 .0 3 .7 20 8 .2 132 18 .2 1.1 46 6.3 147 18 4.8 1515 3 4 .0 8.8 125 2.3 1 . 24 3.5 12 1.6 16 8.4 123 16 3. 1 28 7.4 131 16 1.7 1730 9 4 .0 8 .8 135 2.3 1.30 3.4 19 2 .9 24 7 .6 143 15 2 .0 48 5.7 157 26 14 56 6.3 154 75 39 1930 15 4.0 8.8 143 N/A N/A N/A 11.3 If. 6 Too dark for I i ght ex t i nc- tion and secchi mea- surements. 10/15 11 30 1 1. 0 1.3 161 3.9 1.00 4.6 6 .5 0.86 1210 2 4.0 7.3 129 2.6 1. 19 3.6 11.2 1.5 12 7.3 118 11.2 0.22 24 7 .2 122 11.2 0 .46 44 6.2 134 17 .8 3 .9 ,.-....... !-·· .... --~· '1 r ~ 'i ,.., !"'. r'l "~~t: I ! ., i; f ... ': ' . :. '\ ·~ .. ' I .. .· •·l ' • • • .~ L . 2. LAKE DATA SUMMARY (continued) 10/15 10/29 Time AST 0940 11120 1550 1400 1300 1100 1600 1700 Depth Station --'...m.L 3 9 15 1 2 3 9 15 1 . 0 6.0 16 36 2 10 20 40 56 2 12 1 4 12 28 40 4 16 32 44 6 20 36 56 2 12 Temp. ~ 7.3 7.3 7.3 6 .3 7.4 7 .4 7.4 6.3 5 .8 7.2 7.2 4 .7 6 .0 5 .9 5.9 5.9 5.8 5.8 5.7 5.6 5.8 5.9 5 .9 5.9 5 .2 5 .3 3. INFLOW/OUTFLOW DATA 10/2 10/5 Time AST 1330 1430 1630 1000 1200 1620 Gage Height Instant. S i te _Lf!l_ Q (cfsl EF GF TR EF GF TR 2.75 3.23 2.57 2 .86 168 146 129 85 MONTHLY SUMMARY OF FIELD OBSERVATIONS -EKLUTNA LAKE Cond. (@ 25°C) (umho/cml 121 94 111 134 120 119 120 130 132 122 121 123 120 96 101 107 129 102 112 117 127 110 111 1111 128 120 Me a n Da i ly a lcfsl 183 144 177 120 85 190 Secchi Disk at surface ( ft) 2.5 2.7 2.7 2.5 2. 1 2. 1 2. 1 2 .6 Water Quantum Ex tinction Coefficient (fml 1.27 1 . 21 1 . 21 1 .112 1. 40 1. 34 1. 36 2 .04 Temp. Conductivity ~ @ 25 °C(umho/cml 4.9 1 . 7 8.9 3.5 1.7 9 106 77 115 125 90 119 Month: October , 1984 Depth for 99% Extinction Turbidity TSS ( m l ( NTU l 1..!!!gL.ll 3.6 3 .7 3.8 3.2 3.0 3.2 3.3 2 .3 Secchi Disk lftl 1. 3 0 .3 2.3 3.0 0 .3 1 . 8 11.6 11.8 12 .6 17.2 11.4 11.7 12.4 18.11 21 10.6 11. 1 8 .4 11.0 10 .9 11.3 11 .2 11 .0 11 .0 10.8 10.9 11.3 11.5 11.0 11.2 10 .2 11.0 0.96 0.41 0 .27 4.0 2 .6 1.5 2.0 5.9 8.3 0.33 1.8 5. 1 6.4 6.5 6.0 5.4 4.3 5.7 5.5 5.7 6.6 4.6 5 .3 6.1 5 .4 6 .7 Tu r bidity TSS INTUI 1.rlliiL!..l 30 338 10.5 7.4 160 12.0 35 190 3.2 7 .9 107 3 .5 Remarks Conductivity measure ments for 10/29 performed in the labora- tory. Remarks Sccchi at EF indi c ates clear view to bottom at a deep scour a rea d/s of gage . Q inst at EF is from a d i sella rge measurement. " " indicates that the secchi disc was visible to the bottom. ;--.. ~-:!'··· ·--· .. _.., t ! "\, ' ! I I ; -~ •' 3. INfLOW/OUTFLOW DATA (Continued) Gage 10/9 10/12 10/16 10 /19 10/23 \P/26 II· 10/30 Time AST 1215 1300 1450 1250 1030 1530 1030 1115 1400 1130 1200 11100 1130 1330 0900 1030 1250 1440 1217 1317 1440 Height Instant . Site _if!l_ Q (cfsl EF GF TR EF Cf TR EF Gf TR EF GF TR EF GF TR EF GF TR EF GF TR 2.54 2.59 2 .44 2.42 2. 37 N/A 2. 33 N/A 2.38 N/A 2 .26 N/A 2.18 N/A 107 54 85 40 72 28 66 25 74 25 55 24 45 20 MONTIILY SUMMARY OF FIELD OBSERVATIONS -EKLUTNA LAKE Me<~n Daily Q (cfs I 103 54 155 8 5 38 155 71 2 8 159 66 211 209 711 26 309 45 2 0 3% Water Temp. Conductivity ~ @ 25°C(umho/cml 3 .3 1.3 8.0 2.9 0 .5 6.0 1. 3 0.3 7.4 2 .2 0.0 7. 1 2.2 0 .7 6.9 N/A 0.0 6.2 1 . 7 0 .0 5 .7 130 65 115 1 2 8 89 105 14 2 61~ 117 1112 8 5 111 145 95 113 15 2 102 123 151 109 12 8 Secchi Disk (ftl ) 3.0 0.5 2. 1 >3 .0 0 .7 2.1 > 3.0 0.9 2.7 '3. 0 0.4 2.6 >3 .0 1 . 0 2 .7 ~3.0 1.0 2 .3 73.0 1.0 2 .3 II 11 indicates that the secchi disc was visible to the bottom. MONTI!: October, 1984 Turbidity TSS ( NTU I l!!J.gLlJ 3.2 95 15.5 2.1 63 8 .6 1. 6 511 11 .11 1 • 1 50 10 .5 1 . 6 45 11.3 0.9 50 11 .5 1.3 47 12.2 3.3 78 6 .0 1.1 41 2 .4 0 .15 16 0.56 2. 1 40 6 .9 1.1 30 4.4 1 . 6 23 3.4 4 . 1 14 4 .0 Remarks Q inst at Gf is from a d i sella rge measurement . St i I I i n g we I I fro ze n at GF from this date on Q estimated for GF. Q inst at GF is from a discharge me asurement Q ~ID for GF is e stimated. Q inst at Ef is from a discharge me11 s u r ement . ar-m a nd Q i nst e sti- mated for cr . Gil e s timated for £F, water s urf :~c e is below orifi ce in S li I I ing we I I . Q i nst & QI·1D est i- ma t e d for cr. ...... I I ~.~/."'!! • ' 1 .. I ; ' ' \ : . M14/87 1. LAKE OAfA -GENERAL Lake Lake Date Elevat•on Depth S<~mRied I ft,,ms II __l!!!l_ 11/12 859.6 61.0 11/26 859.0 60.8 2. LAKE DAlA SUMMARY Tim e Da e AST Stat ion 11/12 1000 1130 2 1300 3 1,, 1500 9 1630 15 11/26 0930 11 20 2 1220 3 * Estimate NOTE: Abbreviations used a in (Mean Daily) 3 3 I 10 m Lda,ll) 159* 159* Depth Temp. __l!!!l_ ~ 3.8 4 4.6 16 4 .6 28 4.6 110 4.6 4 4.4 16 4.'> 28 4.4 40 4.3 4 ... 6 16 4.6 32 II. 6 48 4.6 1 3.8 12 3.9 2 .6 4 3.6 12 3.7 40 3 .7 4 3.0 20 3.2 110 3.4 MONTHLY SUMMARY OF FIELD OBSERVATIONS-EKLUTNA LAKE a i n (Mean Daily) (cfsl 65* 65* Cond. (@ 25°C) (umhoLcm) 117 112 126 126 127 110 115 117 116 133 121 1211 126 141 128 122 117 113 114 120 117 117 a out ( t~ean Daily) 3 3 I 10 m Lda.l£) 868 783 secchi Disk at surface I ft I 2.6 2.7 2.6 2.8 2.6 2.7 3.0 3.0 a out (Mean Daily) Stations (cfsl Profiled 355 1,2,3,9,15 320 "1,2,3,9, 15 Quantum Depth Ex tinction for 99% Coefficient Extinct ion (Lm) (ml 1.32 3.5 1.25 3.6 1. 21 3.7 1. 19 3.8 1.17 3.8 1.07 4.23 1. 211 3.9 1. 01 4.5 Month: November, 1984 Weather -10° F, foggy calm. 5 °F' clear I ight breeze variable. Turbidity TSS (NTUI 1..!!!.9.L!J. Remarks 11.0 4.2 Cond from field YSI 11. 3 3.4 11.0 3.3 10.0 N/A 9.4 3. 1 8 .4 2.5 9 .6 5.4 9.6 N/A 9.7 2.4 10.6 3 .3 10.8 3.2 11 . 0 N/A 9.8 3.0 10.8 2.4 10 .II N/A 9.0 3.3 8.8 3.0 9.6 3.4 8.6 3.3 8.2 3.8 7 .9 3.6 8.4 3.4 -N/A Not Available, EF East Fork, GF Glacier Fork, TR Ta II race, TSS = Tota I Suspended So I ids. ... ...... . ! ... -, ~.., :-;.._ ,., t\ ~~~~~ . ' ! . I : . .' . L __ , J: .• ·-. ·~·· --l !·I