2020 Swan Falls Technical Working Group Presented by Ethan Geisler May 20, 2020
Swan Falls Agreement Flows 16,000 Minimum Streamflow - Snake at Murphy Minimum of Record (1981- 2018) - Snake Rive r at Murphy Median of Record (1981 - 2018) 14,000 - Snake River at Murphy Gage - AADF - 3 Day Average Snake River at Milner Gage 12,000 10,000 V) U 8,000 6,000 4,000 2,000 0
~ • D' ep a rtm e nt of Water Resources Wat:er Rig h ts We lll s St rna rns I Dams/ Ho ods Forms Water Da ta Maps/ Spa ti a l Dat a L ega l Actions Water Res oum e B oard Home Legal Actions Settlements Swan Falls MDF Calculations Ext ernal link Swan Falls Settlement Po icy Group MID F Calcul at i on s Set Uement Aire hive T ech ni ca W orking G rou p Technic al Archive Mecl ia ADJUSTED A VE RA GE DA I LY FLOW , ( AADF ) CA L.: CU LAT I ONS fl S wan Falls Adjlusted Average Daily Flow Cakulation fl!: 3 -D ay A erage MDF v, fl!: AADf Graphs - W ee kly I.J pd a te https://idwr.idaho.gov/legal-actions/settlements/swan- , o falls/AADF-calculations.html
~ ~ C Kllr".;i I ·+ lc-·,rik. ..,., ,.,,._.,.,., e,r.1 ltlOfJ N T llNltE'T t'I L li!! C.:11 1 .s n11-'1.,,1 ',olloc~ill :o Ef-. ,r,,,,...., \ I CJ Stri k~ R l' sen o ir I ,,...,,, ,., 3ooc hn ;» l:ln, ,...._ OIJ, .. , E, 1, i,i.l'.afti Wend e ll ~o111.> 1 :::, c-~ I. -11..i U Ln~ "'"Y P.,rq• Legend A Id a ho Po we r ; ..&. USGS C ' 10 20 Miles 0 5 I
V!.'\'x:- b yl, lotd USGS Gage: 131725001 IN cw lJ SGS Gage: 131 725001 ~PC Gage: 131724541 l.br1-t, ... l•.::n J dl o 't $f&o•F-:-r(;•,.., o ' ~u,,1.-.,..1 wan Falls Dam Reservoir I IS CGr--, •• •11 i,Jrit;til BIG F'OOT B4J ' TTC ~5Jl rt S I NKER C .,; .,, 0 0.5 ,f Z ., MHes I I I I I I I
Conceptual Q Milner Flow Past Milner Model 48-72 hour lag Lower Swan Salmon Falls CJ Strike Bliss Falls Reservoir Reservoir Reservoir Reservoir 2 hour lag 10 hour lag 31 hour lag 33 hour lag Q AADF = Q Murphy + ∆ S SF + ∆ S CJ + ∆ S Bliss + ∆ S LSF If Idaho Power releases storage past Milner Q AADF = Q Murphy + ∆ S SF + ∆ S CJ + ∆ S Bliss + ∆ S LSF - Q Milner
•A LIQ JD Travel Department of Date Flow time '/ \I 1 Water Resources 1 (min) 4/20/2006 27500 45 Swan Falls Dam Lag 5/11/2011 30000 45 Time 10/1/2013 8900 45 10/2/2013 6200 45 1/9/2014 7000 45 • Idaho Power analyzed Travel 4/4/2014 6000 45 different seasons and flow Date Flow time 4/1/2014 5000 45 (min) rates for comparison between 7/9/2014 9000 45 Swan Falls Dam Outlet and 4/11/2015 5600 45 7/24/2014 4700 45 the old Snake River nr 5/26/2015 12000 45 10/4/2014 9250 45 Murphy gage 7/4/2015 4550 45 10/4/2014 6600 45 9/18/2015 9000 45 1/24/2015 8600 45 9/29/2015 5500 45 • Current lag time is 2 hours 1/25/2015 6900 45 1/2/2016 6500 45 (based on old analysis) 4/11/2015 5600 45 2/16/2016 10000 45 5/26/2015 12000 45 7/4/2015 4550 45 9/18/2015 9000 45 9/29/2015 5500 45 1/2/2016 6500 45 2/16/2016 10000 45
Swan Falls Dam Outlet to USGS Gage Preliminary Results 8500 - Snake _ l3 1 72454 _IPCo Snake _ l 31 72500 _ USGS No lag time 8000 ' ...-.. {/) 4- u .._..7500 OJ Cl !r..... ro ..c u 7000 {/) ·- 0 6500 Date
~ ,A LIQ JD Department of '/ \I 1 Water Resources 1 Next Steps • Lag Time – Verify 0 hour lag for Swan Falls Dam – Change lag in Excel AADF calculation for this year • Or next year?
~ ,A LIQ JD Department of '/ \I 1 Water Resources 1 Aquarius Time-series Calculation • IDWR and Idaho Power both utilize Aquarius (AQ) • Last meeting: proposed exploring calculation in AQ • Status: – Idaho Power: Developed the calculation in AQ (with 15 minute time series) • 15 minute data is necessary – IDWR: Import USGS and Idaho Power Data • Have the capability to reproduce the calculation in AQ
~ ,A LIQ JD Department of '/ \I 1 Water Resources 1 Current Swan Falls CJ Strike Bliss Dam Lower Salmon Falls Time-steps 15 min stage 60 min stage 15 min stage 15 min stage ∆ Storage Discharge Hourly to D D D Daily Daily Daily Daily Mean Value Mean Mean - = + Snake River Snake River Reservoir AADF at Milner Adjustment nr Murphy * If flow is IPCo Storage
~ ,A LIQ JD Department of '/ \I 1 Water Resources 1 Proposed Swan Falls CJ Strike Bliss Dam Lower Salmon Falls Time-steps 15 min stage 15 min stage 15 min stage 15 min stage I ∆ Storage Discharge 15 min to D D D Daily Daily Daily Daily Mean Value Mean Mean + - - - + Snake River Snake River Reservoir AADF at Milner Adjustment nr Murphy * If flow is IPCo Storage
~ ~ ~ 2019 AADF vs 15 minute calculation 1 Day AADF Comparison Pl ot - 2019 Calendar Year Data (Preliminary Results) 30000 ,-----------------------------------------------------------------, - IOYIR_MOF - AQ.MOF _Without Mrlner -AQ.MOI" _W11h_Mrloer 25000 20000 u.. Q 15000 ,. > ... Q 10000 5000 0 1/1/2019 2/1/2019 3/1/2019 4/1/2019 5/1/2019 6/1/2019 7/1/2019 8/1/2019 9/1/2019 10/1/2019 l 1/1/2019 12/ 1 /20 19
~ ,A LIQ JD Department of '/ \I 1 Water Resources 1 Discussion • Official AADF: Excel, Aquarius, R, or other – Currently Excel – Datasets posted online • Any concern with 15 minute datasets?
~ ,A LIQ JD Department of '/ \I 1 Water Resources 1 Next Steps • Lag Time – Verify 0 hour lag for Swan Falls Dam
~ ,A LIQ JD Department of '/ \I 1 Water Resources 1 Next Steps • Lag Time – Verify 0 hour lag for Swan Falls Dam • Aquarius Calculation – Refine 15 minute time step calculation in Aquarius and work on 15 minute Excel calculation? – Verify 15 minute calculation: QA/QC – Analyze reservoir lag times?
Swan Falls Forecast Tool May 20, 2020
~ Swan Falls Forecast Tool - January 2020 Forecast 10,000 9,000 8,000 - 7,000 V) ........ ("I') 6,000 QJ f.O • SF FT Uncertainty Range n, 5,000 Swan Falls Minimum Streamflow ~ u ·- V) - S FFT Forecast c 4,000 3,000 2,000 1,000 0
~ ~ Swan Falls Forecast Tool - May 2020 Forecast 10,000 9,000 8,000 - 7,000 ~ M 6,000 QJ SFFT Uncertainty Range ns 5,000 Swan Falls Minimum Streamf low ~ u .!!? - SFFT Forecast C 4,000 3 ,0 00 2,000 1,000 0
Manual for the Milner to Murphy Reach Gain Forecast T ool Version 1.0 Final Report Comments? May 2020 or Discussion? Idaho Department of Water Resources Ad apted fr om CH 2M Hill's Final Sign ed Document {May 31, 2017)
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