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April 21, 2011 Bureau of Reclamation - Wyoming Area Office Page 1 of 4 <br />Table 1. North Platte River System Monthly Operating Plan data for Water Year 2011 <br />Prniartarl Tntal SSrcfam Infl -, f... IA /�f... v,.-,. � A. <br />Prniartari Tntal Cvctam Fn.l_nf_KA . +k Qf­ ....* f... Inr-, _. v„_- ten. A. <br />Oct <br />Novi <br />Decl <br />Jan <br />Feb <br />Mar <br />Apr <br />Mayl <br />Jun <br />Jul <br />-1- <br />Aug <br />Sep <br />Total <br />Reasonable Minimum <br />Reasonable <br />Expected <br />Reasonabl <br />W. Yr. <br />W. Yr. <br />2177.1 <br />318.5 <br />487.8 <br />451.0 <br />130.0 <br />32.3 <br />30.1 <br />2059.0 <br />Expected # <br />44.7 <br />49.2 <br />63.3 <br />54.8 <br />51.3 <br />93.4 <br />321.7 <br />585.4 <br />654.0 <br />192.7 <br />73.1 <br />55.5 <br />2239.1 <br />Reasonable Maximum <br />956 <br />425 <br />Sweetwater River <br />2132.5 <br />2538.4 <br />3002.6 <br />273.2 <br />725.4 <br />810.1 <br />288.4 <br />173.4 <br />134.3 <br />1830.7 <br />Water Year 2010 <br />Average 1981 -2010 <br />53.5 <br />50.4 <br />54.1 <br />47.9 <br />33.7 <br />39.2 <br />46.8 <br />43.0 <br />41.5 <br />47.1 <br />80.3 <br />88.1 <br />280.0 <br />163.6 <br />478.7 <br />330.3 <br />780.3 <br />342.3 <br />146.8 <br />110.5 <br />47.9 <br />44.1 <br />33.4 <br />39.6 <br />2077.0 <br />1346.1 <br />Prniartari Tntal Cvctam Fn.l_nf_KA . +k Qf­ ....* f... Inr-, _. v„_- ten. A. <br />Octl <br />Novi <br />Decl <br />-- __ -_- <br />Jan <br />Feb[- <br />Mar <br />Apr <br />Mayl <br />Junj <br />Jul <br />-cci <br />Aug <br />Se <br />Total <br />Reasonable Minimum <br />Reasonable <br />Expected <br />Reasonabl <br />W. Yr. <br />W. Yr. <br />2177.1 <br />265.0 <br />172.8 <br />150.0 <br />383.0 <br />281.6 <br />124.0 <br />2059.0 <br />Expected # <br />0.5 <br />0.4 <br />0.5 <br />1.1 <br />1.3 <br />186.6 <br />265.0 <br />273.6 <br />230.0 <br />426.0 <br />425.0 <br />184.0 <br />1994.0 <br />Reasonable Maximum <br />956 <br />425 <br />Sweetwater River <br />2132.5 <br />2538.4 <br />3002.6 <br />265.0 <br />290.0 <br />300.0 <br />456.0 <br />405.0 <br />261.8 <br />1830.7 <br />Water Year 2010 <br />0.1 <br />0.1 <br />0.5 <br />0.7 <br />0.9 <br />0.9 <br />27.9 <br />179.2 <br />230.5 <br />432.2 <br />426.8 <br />224.4 <br />1524.2 <br />Average 1981 -2010 <br />8.2 <br />2.7 <br />0.8 <br />0.5 <br />1.8 <br />17.0 <br />50.6 <br />124.2 <br />168.2 <br />327.4 <br />292.1 <br />135.1 <br />1128.9 <br />Prniartari Tntal Cvctam Fn.l_nf_KA . +k Qf­ ....* f... Inr-, _. v„_- ten. A. <br />•­­ - ­..... -­ '- v '� 11- - - ai- Vlay f =I RCLCI VVII i.Urnent of I.b KaT <br /># Actual data from October through March <br />Table 2. North Platte Estimated April-July Runoff <br />The April 1, 2011, water supply forecast indicates above average April - July runoff for Seminoe <br />Reservoir and above 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 />Novi <br />Dec <br />Jan <br />Febl <br />Mar <br />^ Apr <br />Mayl <br />Jun <br />V ^ July <br />y Aug <br />Se <br />Reasonable Minimum <br />April -July Runoff <br />Reasonable <br />Expected <br />Reasonabl <br />W. Yr. <br />W. Yr. <br />2177.1 <br />2460.6 <br />2718.5 <br />2414.2 <br />2122.0 <br />2001.0 <br />Expected # <br />2059.0 <br />2101.4 <br />2161.7 <br />2212.5 <br />2258.8 <br />2138.1 <br />2180.4 <br />2460.5 <br />2840.6 <br />2554.2 <br />2158.5 <br />2002.9 <br />Reasonable Maximum <br />203 <br />1242 <br />964 <br />956 <br />425 <br />Sweetwater River <br />2132.5 <br />2538.4 <br />3002.6 <br />2777.6 <br />2498.8 <br />2342.7 <br />Water Year 2010 <br />1751.8 <br />1800.5 <br />1830.7 <br />1874.4 <br />1913.2 <br />1986.0 <br />2225.7 <br />2487.7 <br />2985.9 <br />2660.7 <br />2242.3 <br />2024.1 <br />Average 1981 -2010 <br />1447.6 <br />1489.8 <br />1525.7 <br />1564.8 <br />1606.5 <br />1670.7 <br />1770.6 <br />1947.0 <br />2079.9 <br />1819.2 <br />1535.0 <br />1420.6 <br />•­­ - ­..... -­ '- v '� 11- - - ai- Vlay f =I RCLCI VVII i.Urnent of I.b KaT <br /># Actual data from October through March <br />Table 2. North Platte Estimated April-July Runoff <br />The April 1, 2011, water supply forecast indicates above average April - July runoff for Seminoe <br />Reservoir and above average for the rest of the system. The forecast for the North Platte River <br />system is shown in the two tables below. <br />av vvti loo IoJ/ 1 1/13 lZil bbl <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 />Average is based on the 1981 -2010 period. <br />AOP1104 <br />. �., <br />April 1, 2011 Forecast <br />30 Yr. <br />Comparative Actual <br />Forecast <br />of AEEil :July Runoff <br />April -July <br />Expected <br />April -July Runoff <br />Reasonable <br />Expected <br />Reasonabl <br />W. Yr. <br />W. Yr. <br />W. Yr. <br />W. Yr. <br />Points <br />Runoff <br />% of Avg. <br />Maximum' <br />Minimum <br />Avg. z <br />2010 <br />2009 <br />2008 <br />2007 <br />Seminoe Reservoir <br />1600 <br />1,450 <br />1200 <br />714 <br />203 <br />1242 <br />964 <br />956 <br />425 <br />Sweetwater River <br />Above Pathfinder <br />Reservoir <br />95 <br />65 <br />45 <br />59 <br />110 <br />91 <br />48 <br />52 <br />24 <br />Alcovato Glendo <br />280 <br />180 <br />100 <br />131 <br />137 <br />304 <br />161 <br />209 <br />102 <br />av vvti loo IoJ/ 1 1/13 lZil bbl <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 />Average is based on the 1981 -2010 period. <br />AOP1104 <br />