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April 21, 2009 Bureau of Reclamation - Wyoming Area Office Page 1 of 4 <br />Table 1. North Platte River System Monthly Operating Plan data for Water Year 2009 <br />Prniarfarl Tnfal Cvcfam Infl -, fns W,f- vex. -ionnn- <br />P- ;.,+.A Decn...n:. n"441... -. f... 111/..x... ---- nnnn. <br />Oct <br />Nov <br />Decl <br />Jan <br />I Feb <br />I Marl <br />Apri <br />Mayl <br />Jun <br />v v July <br />y� Augl <br />Se <br />Total <br />Reasonable Minimum <br />W. Yr. <br />W. Yr. <br />Points <br />Runoff <br />% of Avg. <br />1561.2 <br />132.3 <br />225.8 <br />189.0 <br />33.0 <br />28.3 <br />24.2 <br />1233.0 <br />Expected # <br />41.7 <br />38.7 <br />33.5 <br />41.9 <br />49.0 <br />77.6 <br />168.1 <br />291.3 <br />311.2 <br />92.6 <br />37.6 <br />33.4 <br />1216.6 <br />Reasonable Maximum <br />1638.3 <br />1899.6 <br />2155.2 <br />216.1 <br />438.4 <br />458.9 <br />155.8 <br />56.1 <br />51.1 <br />806.4 <br />Water Year 2008 <br />39.7 <br />32.5 <br />32.5 <br />32.0 <br />35.3 <br />59.1 <br />127.6 <br />547.1 <br />472.0 <br />125.9 <br />39.2 <br />42.7 <br />1585.6 <br />Average 1979 -2008 <br />50.0 <br />47.5 <br />39.3 <br />42.4 <br />47.7 <br />88.1 <br />162.4 <br />331.4 <br />326.4 <br />109.3 <br />44.4 <br />39.8 <br />1328.8 <br />P- ;.,+.A Decn...n:. n"441... -. f... 111/..x... ---- nnnn. <br />Prniarfari Tnfal I-fam FnA- of -Mnnfh Z +...e... - fn. mt-4- v,..,. qnnn. <br />Octl <br />Nov <br />Decl <br />Janj <br />Febj <br />Marl <br />Aprj <br />Mayl <br />Jun <br />V V July <br />vv Aug <br />Se <br />Total <br />Reasonable Minimum <br />W. Yr. <br />W. Yr. <br />Points <br />Runoff <br />% of Avg. <br />1561.2 <br />15.0 <br />160.8 <br />160.0 <br />316.0 <br />281.0 <br />49.9 <br />1233.0 <br />Expected # <br />0.2 <br />0.1 <br />0.4 <br />0.5 <br />0.6 <br />0.8 <br />20.5 <br />170.3 <br />172.0 <br />306.0 <br />313.0 <br />70.0 <br />1054.4 <br />Reasonable Maximum <br />1638.3 <br />1899.6 <br />2155.2 <br />22.3 <br />142.9 <br />157.0 <br />311.0 <br />303.0 <br />70.0 <br />806.4 <br />Water Year 2008 <br />0.2 <br />0.2 <br />0.1 <br />0.3 <br />0.5 <br />0.6 <br />16.6 <br />165.3 <br />111.1 <br />303.3 <br />269.1 <br />71.7 <br />939.0 <br />Average 1979 -2008 <br />9.4 <br />2.7 <br />0.8 <br />0.5 <br />1.8 <br />17.0 <br />53.0 <br />124.5 <br />171.2 <br />325.0 <br />288.1 <br />136.0 <br />1130.0 <br />Prniarfari Tnfal I-fam FnA- of -Mnnfh Z +...e... - fn. mt-4- v,..,. qnnn. <br />111 i va nVI L IA- VVII l Ul IICI Il UI 9.0 rdI HIIU Uldy ReeT Ke5ervoir uonTenT OT 1.25 KaT <br /># Actual data from October through March <br />Table 2. North Platte Estimated April -July Runoff <br />The April 1, 2009, water supply forecast indicates average April - July runoff for Seminoe <br />Reservoir and below average for the rest of the system. The forecast for the North Platte River <br />system is shown in the two tables below. <br />Oct <br />Novj <br />Decl <br />Jan <br />I Feb <br />Mar <br />Apri <br />Mayl <br />Junj <br />July <br />v Augl <br />Se <br />Reasonable Minimum <br />W. Yr. <br />W. Yr. <br />W. Yr. <br />Points <br />Runoff <br />% of Avg. <br />1561.2 <br />1598.7 <br />1590.2 <br />1268.9 <br />992.2 <br />949.3 <br />Expected # <br />1233.0 <br />1271.8 <br />1301.1 <br />1340.2 <br />1385.1 <br />1453.2 <br />1590.5 <br />1682.8 <br />1784.6 <br />1529.2 <br />1227.5 <br />1172.0 <br />Reasonable Maximum <br />Sweetwater River <br />1638.3 <br />1899.6 <br />2155.2 <br />1953.9 <br />1667.7 <br />1626.7 <br />Water Year 2008 <br />743.5 <br />775.1 <br />806.4 <br />835.3 <br />868.3 <br />924.1 <br />1018.6 <br />1398.9 <br />1721.6 <br />1501.9 <br />1241.0 <br />1195.8 <br />Average 1979 -2008 <br />1454.0 <br />1495.7 <br />1531.6 <br />1570.2 <br />1612.5 <br />1676.7 <br />1772.9 <br />1951.0 <br />2064.2 <br />1803.8 <br />1523.6 <br />1408.7 <br />111 i va nVI L IA- VVII l Ul IICI Il UI 9.0 rdI HIIU Uldy ReeT Ke5ervoir uonTenT OT 1.25 KaT <br /># Actual data from October through March <br />Table 2. North Platte Estimated April -July Runoff <br />The April 1, 2009, water supply forecast indicates average April - July runoff for Seminoe <br />Reservoir and below average for the rest of the system. The forecast for the North Platte River <br />system is shown in the two tables below. <br />0JU 001 J4 -IL "I / 551 bL3 tS325 <br />' The probability is estimated to be 9 chances in 10 that the actual volume will fall between the reasonable minimum and reasonable maximum. <br />2 Average is based on the 1979 -2008 period. <br />AOP0904,xls <br />April 1, 2009 Forecast <br />30 Yr. <br />Comparative Actual <br />Forecast <br />ofApril-July Runoff <br />April-July <br />Expected <br />April - July Runoff <br />Reasonable <br />easonabl <br />W. Yr. <br />W. Yr. <br />W. Yr. <br />W. Yr. <br />Points <br />Runoff <br />% of Avg. <br />Maximum' <br />Expected <br />Minimum' <br />Av 9• <br />2008 <br />2007 <br />2006 <br />2005 <br />Seminoe Reservoir <br />950 <br />700 <br />500 <br />704 <br />99 <br />956 <br />425 <br />546 <br />733 <br />Sweetwater River <br />Above Pathfinder <br />Reservoir <br />70 <br />30 <br />20 <br />61 <br />49 <br />52 <br />24 <br />32 <br />66 <br />Alcovato Glendo <br />150 <br />100 <br />50 <br />122 <br />82 <br />209 <br />102 <br />45 <br />39 <br />0JU 001 J4 -IL "I / 551 bL3 tS325 <br />' The probability is estimated to be 9 chances in 10 that the actual volume will fall between the reasonable minimum and reasonable maximum. <br />2 Average is based on the 1979 -2008 period. <br />AOP0904,xls <br />