RECLAMATION _Afanaging ffi1ter in the H1est 2019 Idaho Water Supply Committee Meeting April 11, 2019 Ryan Hedrick Middle Snake Field Office – Water Operations Boise Reservoir System PROVISIONAL DATA - Subject to change Boise Riv,er system (Anderson Ranch, Arrowrock, Lucky P,eak) is at 616 %, of capacity. Total spaoe available: 319384 AF To tall storage capadty: 949700 AF Natural Flow: 13582 CFS Volume (ac-ft) 1,000,000 1,500,000 2,000,000 2,500,000 500,000 0 1997 2017 1983 2006 ac- 1981 1984 ft - - 1996 2010 Average Actual Apr-Jul Forecast Apr-Jul 2011 1995 1986 1999 Apr- 1998 System Boise Reservoir Jul Water SupplyForecast Jul Water 1993 WY1983 to WY2019 2012 Apr - 2019 - - 2008 Jul Runoff Average Actual Apr-Jul Runoff 1989 Water Year Water 2009 2016 2018 = 1,261,000 2003 2010 2002 2014 2000 1985 119% of 1981 2004 WY2019 Apr 2005 1,500,000 1990 1988 Forecast - 2007 - 2010 average Jul Adopted 2015 ac- 1991 ft 2013 I 1994 I 1987 I 2001 1992 MOORES CREEK SUMMIT Elevaaon:6100.000 ~ 2019 ~ 2018 ~ 2017 ~- avg 40------+------+----------------11-------+---n--n~---------+----- 38 364---------'------'-----j____ _jl_ ___ ~ _,__ __l( ~--=.a------------:----- 34 32t-------+------+-------t----------jr---jr4r-i----------:i==-- , ------ 30 28+-----'------'-----~-------!~ r----l---~=----!------P ;....,,,_ ____ 26 24 +-------+----------...----------:~1--- __,.,_,.r_________ +----- -----1- ---- 22 ·-C: 2QL__ ________._ ____-'- ____...L_ _ _.jr--,C.::::::....___J.__ _L_ __ ~ __~ ~~---'--'-4--- 18 16 +------------------------Y-----------1-----,------..------1----+---1---\-- 14 12+-----'------'----~=.,L--:Jr- -,==,;::-----+-------!------1f---"---l----\-- 10 8+-------+------+---T" "- l--~ '+---l '------!i-----+-----+-----~ ---\~-----\- 6 and +ark +luc +low Bevatlon:O.OOOOOOOE+OO rt] • 2019 1]• 2018 rt] • 20 17 ~- avg 1,050,000 1,000,000 ' 950,000 1 900,000 : 850,000 ' .u QJ 800,000 : ~ I QJ 750,000 I L u f1J 700,000 , ' Jun 1 Jul 1 12019-04-08 9194.94 Lucky Peak Lake near Boise, ID Elevation:3060.000 I 17,000 16,000 15,000 - 14,000 13,000 12,000 CalculatedCalculat ed InflowInflow 11,000 10,000 9,000 ~u 8,000 7,000 r 6,000 5,000 4,000 ,}'~ 3,000 2,000 ,..._ jvJ 1,000 A - ,..,. - ~ - : ~ v- ,_,.,.,, ' - i - -- ·- - -- ....... -- I - --- - ! ! ! I Oct 1 Nov 1 Dec 1 Jan 1 Feb 1 Mar 1 Apr 1 - 2019 Required~ - 2019 Actual 950,000 900,000 850,000 800,000 --- ----------------,---------------- ■ 750,000 700,000 650,000 600,000 ' • .µ 550,000 I■ a C 2 500,000 C o 450,000 u 400,000 350,000 300,000 250,000 I 200,000 150,000 I\ ■ 100,000 Represents current targets, SUBJECT TO CHANGE 50,000 0 * I I Oct0l Nov0l DecOl Jan0lI •11 . I 11 I . I I I Anderson Operations • Currently discharging 600 cfs • Increases likely to occur as inflows rise to meet flood control rule curves • Expecting increases in the next few weeks but could possibly change depending upon runoff and reservoir conditions downstream Anderson Ranch Dam and Reservoir Bevation:3880.000 ~- 2019 ~- 2018 • 20 17 ~- avg 410,000 400,000 390,000 380,000 370,000 ' 360,000 350,000 I 340,000 330,000 ,I.I ~ 320,000 ~ 310,000 ~ 300,000 I u f1J 290,000 280,000 270,000 ' 260,000 250,000 240,000 230,000 , 220,000 I 210,000 Oct 1 Nov 1 Dec 1 Jan 1 Feb 1 Mar 1 Aprl May 1 Jun 1 Jul 1 Aug 1 Sep 1 South Fork Boise River at Anderson Ranch Dam PNRO - Bo ise I I I 4,200 I I I l hr- I -- 4,000 I 3,800 3,600 \ 3,400 3,200 CalculatedCalculated InflowInflow 3,000 2,800 2,600 ~ - I 2,000 I- 1,800 I I 1,600 1,400 I I 1,200 1,000 ~ 800 / 600 ~ r - I 400 ~ I J - , - I I I I 3/2/2019' 3/9/2019 3/16/2019 3/23/2019 3/30/2019 4/6/2019 AND - Anderson [fl - 2019 Required [fl - 2019 ctual 400,000 I - I 380,000 360,000 • .. -. 11 I 340,000 320,000 ······ - - - 300,000 - " 280,000 • 260,000 ..i 240,000 ■ _g [ QJ 220,000 ■ .µ - - 5200,000 U 180,000 160,000 - ■• - - 140,000 120,000 100,000 • 80,000 • . II 60,000 Represents current targets, SUBJECT TO CHANGE 40,000 11 • 20,000 0 I I ■ ------- -------- -■ -------------------------1 I t • I . I • 1 I . I -------------• 1 I . I I I OctOl NovOl DecOl lanOl Arrowrock Operations • Currently discharging 2,900 cfs • Increases likely as Lucky Peak increases occur • Operated as needed to slow the fill at Lucky Peak or to keep Lucky Peak from drafting. Arrowrock Dam and Reservoir Elevation:3216.000 ~ 2019 ~ 2018 ~ 2017 ~- avg 240,000 200,000 180,000-'-, -------------'------1-'--........&'""------ --------'------'='._,,...._____ "'"4- __'I; __------'---- ~ I QJ ~ 160,000 ~ M140,000 t---,~ ----+---~,T-- ~ "r--'------+----+--l- ~ r-t-__,__--=-=l----+-----+--~ ----\-,____~ ---- 120,000 I 60,000 .;...1 __..c:'------i-----------------------1-----------------.--''\c-'""-- I--- Oct 1 Nov 1 Dec 1 Jan 1 Feb 1 Mar 1 Aprl May 1 Jun 1 Jul 1 ug 1 Payette Reservoir System W'· lann Cr e 377110 0 Cascade Full 441510 '646460 168 Full Q I 34-9 cfs PRLI 2104 cfs Payette River system (Cascade, Deadwood) is at 67 % of capacity. Total space available: 264339 AF Total storage capacity: 800452 AF Natural Flow: 16514 CFS Volume (ac-ft) 1,000,000 1,500,000 2,000,000 2,500,000 3,000,000 500,000 0 1997 2017 1996 1983 ac- 1981 2006 ft - - 1984 2010 Average Actual Apr-Jul Forecast Apr-Jul 2011 1999 1995 @ Horseshoe Bend System Payette 1993 Apr- 2012 Jul Water SupplyForecast Jul Water 1986 WY1983 to WY2019 1998 Apr - 2019 - 2008 Jul Runoff - Average Actual Apr-Jul Runoff 2003 Water Year Water 2009 2010 2018 = 1,485,000 2016 2014 1989 2002 1985 WY2019 Apr 2000 117% of 1981 2004 2005 1,736,000 1990 - 2013 Jul Adopted Forecast - 2007 2010 average 1988 ac- 1991 ft 1994 2015 1992 I 1987 2001 Payette River near Horseshoe Bend, ID PNRO - Bo ise 16,000 I 15,500 r i 15,000 14,500 Flood Stage 12,000 cfs 14,000 13,500 13,000 -----+------+-~ -----+-------------+----~ ---+-- 12,500 12,000 11,500 11,000 10,500 J!! 10,000 u 9,500 9,000 8 ,500 8,000 --------i 7,500 7,000 6,500 6,000 5,500 5,000 4,500 4,000 3,500 Black canyon Dam and Reservoir near Emmett, ID 4/ 3/2019 PNRO - Bo ise 21,000 ... .. 20,000 19,000 Flood Stage 16,000 cfs 18,000 17,000 16,000 --~ 15,000 14,000 J!! 13,000 ... + ~·-- I- ... u 12,000 11,000 .. .. .. .. 10,000 9,000 8,000 7,000 6,000 5,000-- -; 4,000 =='-------------------'------------'-------------''--- 4/ 3/2019 4/ 4/2019 4/ 6/ 2019 4/s 12019 4/ 9tio19 4/ 1012019 4/ 11h o19 Cascade Dam and Lake Cascade at Cascade, Idaho Elevation:4828.000 ~ 2019 ~ 2018 ~• 2017 [t- avg 640,000 620,000 600,000 ' I 580,000 560,000 540,000 520,000 -1-J ~ 500,000 ~ OJ 480,000 L ~ 460,000 440,000 420,000 400,000 380,000 360,000 340,000 Oct 1 Nov 1 Dec 1 Jan 1 North Fork Payette River a Cascade, Idaho PNRO • Boise 7,000 ~--------------'-------+---------+---------+-- - -- 6,500 6,000 _______________._ _______________________ _ _ _ 5,500 Calculated Inflow 5,000 ----.--------+--------------------+--------+-----------+-j- - -ll 4,500 4,000 -----,-------+---------+-------+--------+---------+_..---- J!! u 3,500 3,000-----------_.______ __._ ______....__ ___________________._ ______ 2,500 2,000 -------........---------,-------..-----------,--------•----- 1,500 I I 3/9/2019 3/23/2019 3/30/2019 4/6/2019 CSC - Cascade ~ 2019 Guide Curve~ - 2019 Actual 0.00 , 640,000 ~~~~,~ ______j__ ___ _L ___ _j_ ___ _j_ ___ ___J_ = :___ _:_____,_ ____L ___L ~t=== 620,000 • 600,000 -----1----------------,-----t-----t---=:c==:::t' I 580,000 ~ ---------,.------_J 560,000-----1-----~------+-----------+------t-----~----. I B, I 540,000 I 520,000--------¼-------------+------+-------+--------.---Fr,ir!,--------i-----f--------i---IIll ~-.. 500,000 480,000 -----+---------------+-----+-----Ii.:"~ ........- 460,000 c 440,000------+-------------+------+-------+------i--\-1. ----'',-------------------1--------i---• 2 420,000 11a.i § 400,000 ----+-------l-----~-----k=--,.-~~~~----~----~ ----L~ •- . u 380,000 360,000 ~~~~~~::::~~t::::::=:::::::r= __ l ____1~i_ J~,.,__ __ l_L_J__ 340,000 320,000 -----+-----..,__________ -+-----+--------+-- ~;..:..----"<---!---f-----!---- 300,000 280,000------+--------------------+-----~---------...,.___--+------ 260,000 ·1111 . Represents current targets, 220,000 200,000------+---------------+---------~-----~----------+--SUBJECT TO CHANGE 180,000 I I OctOl NovOl DecOl lanOl FebOl MarOl AprOl Cascade Operations • Flows were at 600 cfs – Evening of April 8, flows reduced to minimum flows of 200 cfs as Emmett flows began to rise (Target flood flows: 16,000) • Increased flows to 1,200 cfs yesterday, April 10th • Increased flows today to 2,200 cfs, anticipate increase to 3,000 tomorrow to hold space in reservoir • System inflows will determine the rate and timing of releases North Fork Payette River at Cascade, Idaho PNRO - Boise I I 1,750 I I I I I I 1,700 1,650 V 1,600 1,550 1,500 1,450 1,400 1,350 1,300 1,250 1,200 1,150 M 1,100 1,050 1,000 J!! u 950 I I 900 I I ~ I I 850 800 750 700 ~ 650 1~1/li'~ ;'I. h . .t.;~~ 600 ~ • •· ·• . I I I I 550 I I ' 500 450 i\ 400 350 300 250 I ' I • •• A A l I I VI~,~,.~ vv,,T"- I 200 I I I v11v•.. : C'V • -~ I I I I I I I I I I 4/ 6/ 2019 4/ 6/2019 4/7/2019 4/7/2019 4/ 8/2019 4/ 8/2019 4/ 9/2019 4/ 9/2019 4/ 10/2019 4/ 10/ 2019 4/ 11/2019 Deadwood Dam, Idaho Bevation:5334.000 ~ 20 19 ~ 2018 ~• 20 17~ - avg 155,000 150,000 ' 145,000 140,000 135,000 130,000 ' 125,000 .LJ I' I QJ I Q.l 120,000 , I II:, I I I I QJ 115,000 uL ' 10 110,000 105,000 1 I I I I I 100,000 : I 95,000 ' ' 90,000 ' 85,000 : 80,000 : I I I ,~ ~ Oct 1 Nov 1 Dec 1 Jan 1 Feb 1 Mar 1 Apr 1 Mayl Jun 1 Jul 1 Aug 1 Sep 1 Deadwood Rive below Deadwood Dam PNRO • Bo ise 700 650 600 550 Calculated Inflow 500 450 J!! 400 u 350 300 250 200 150 100 3/2/2019 DED