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April 20, 2010 Bureau of Reclamation - Wyoming Area Office Page 1 of 4 <br />Table 1. North Platte River System Monthly Operating Plan data for Water Year 2010 <br />Proierted Tntal Svctam Inflnw fnr Wafar Vanr 9n9 n• 9 nnn . ,- ;__ <br />Prniarfarl (Znarn¢m, 0--i, (l..ffl -.. fnr W- +M Vn Ind n. <br />Octi <br />Novi <br />Decl <br />Janj <br />Feb <br />Mar <br />Aprj <br />MaVI <br />Junj <br />Jul <br />Augj <br />Sepll <br />Total <br />Reasonable Minimum <br />W. Yr. <br />W. Yr. <br />Points <br />Runoff <br />% of Avg. <br />2071.8 <br />121.4 <br />162.3 <br />134.8 <br />26.7 <br />8.0 <br />12.9 <br />1751.8 <br />Expected # <br />53.5 <br />54.1 <br />33.7 <br />46.8 <br />41.5 <br />80.3 <br />166.1 <br />2931 <br />299.6 <br />89.7 <br />37.9 <br />34.2 <br />1230.6 <br />Reasonable Maximum <br />2126.8 <br />2437.2 <br />2707.3 <br />175.5 <br />472.4 <br />501.9 <br />174.2 <br />102.1 <br />79.9 <br />1301.1 <br />Water Year 2009 <br />41.7 <br />38.7 <br />33.5 <br />42.9 <br />49.0 <br />77.6 <br />201.0 <br />417.9 <br />450.4 <br />137.5 <br />37.8 <br />26.7 <br />1554.7 <br />Average 1980 -2009 <br />50.0 <br />47.6 <br />39.5 <br />42.7 <br />48.1 <br />88.1 <br />163.0 <br />334.1 <br />328.1 <br />109.2 <br />43.4 <br />39.6 <br />1333.4 <br />Prniarfarl (Znarn¢m, 0--i, (l..ffl -.. fnr W- +M Vn Ind n. <br />Proip_ctP_d TntaI Svctam Furl - of -Mnnth Stnrana* fnr Wnfar Va r 9nd n• 1 nnn ., ­ ., f...,t <br />Octl <br />Novj <br />Decl <br />Janj <br />Febj <br />Marl <br />Aprj <br />Mayl <br />Jun <br />Jul <br />Aug <br />Sep1l <br />Total <br />Reasonable Minimum <br />W. Yr. <br />W. Yr. <br />Points <br />Runoff <br />% of Avg. <br />2071.8 <br />21.8 <br />153.9 <br />100.0 <br />306.0 <br />280.0 <br />75.0 <br />1751.8 <br />Expected # <br />0.1 <br />0.1 <br />0.5 <br />0.7 <br />0.9 <br />0.9 <br />21.0 <br />154.7 <br />100.0 <br />306.0 <br />280.0 <br />124.0 <br />988.9 <br />Reasonable Maximum <br />2126.8 <br />2437.2 <br />2707.3 <br />22.3 <br />133.4 <br />187.0 <br />311.0 <br />280.0 <br />124.0 <br />1301.1 <br />Water Year 2009 <br />0.2 <br />0.1 <br />0.4 <br />0.5 <br />0.6 <br />0.8 <br />21.5 <br />161.1 <br />25.0 <br />262.5 <br />271.6 <br />120.3 <br />864.6 <br />Average 1980 -2009 <br />8.8 <br />2.7 <br />0.8 <br />0.5 <br />1.8 <br />17.0 <br />52.8 <br />125.7 <br />167.9 <br />323.7 <br />287.5 <br />133.9 <br />1123.1 <br />Proip_ctP_d TntaI Svctam Furl - of -Mnnth Stnrana* fnr Wnfar Va r 9nd n• 1 nnn ., ­ ., f...,t <br />u R.iuucJ rwi tca IAV=I vvu %-,vrncnt vi •r.o rtdi di ill vi dy Reei MUCS [Vull Uoritent OT I.Z5 KaT <br /># Actual data from October through March <br />Table 2. North Platte Estimated April -July Runoff <br />The April 1, 2010, water supply forecast indicates below average April - July runoff for Seminoe <br />Reservoir, Sweetwater River and Alcova to Glendo gain. The forecast for the North Platte River <br />system is shown in the two tables below. <br />Oct <br />I Novj <br />Decl <br />Janj <br />Feb <br />I Marl <br />Aprj <br />Ma <br />Junj <br />Jull <br />Aug <br />Se <br />Reasonable Minimum <br />W. Yr. <br />W. Yr. <br />W. Yr. <br />Points <br />Runoff <br />% of Avg. <br />2071.8 <br />2050.8 <br />2047.0 <br />1723.4 <br />1417.6 <br />1335.2 <br />Expected # <br />1751.8 <br />1800.5 <br />1830.6 <br />1874.3 <br />1913.2 <br />1986.0 <br />2117.2 <br />2225.1 <br />2382.9 <br />2118.3 <br />1837.9 <br />1723.3 <br />Reasonable Maximum <br />Sweetwater River <br />_ <br />2126.8 <br />2437.2 <br />2707.3 <br />2517.7 <br />Above Pathfinder <br />2226.1 <br />Water Year 2009 <br />1233.0 <br />1271.8 <br />1301.1 <br />1340.2 <br />1385.1 <br />1453.2 <br />1623.0 <br />1846.2 <br />2245.4 <br />2077.5 <br />_2297.5 <br />1815.0 <br />1700.4 <br />Average 1980 -2009 <br />1444.3 <br />1486.2 <br />1522.3 <br />1561.2 <br />1603.8 <br />1668.0 <br />1765.0 <br />1944.1 <br />2063.0 <br />1804.1 <br />1523.7 <br />1410.6 <br />u R.iuucJ rwi tca IAV=I vvu %-,vrncnt vi •r.o rtdi di ill vi dy Reei MUCS [Vull Uoritent OT I.Z5 KaT <br /># Actual data from October through March <br />Table 2. North Platte Estimated April -July Runoff <br />The April 1, 2010, water supply forecast indicates below average April - July runoff for Seminoe <br />Reservoir, Sweetwater River and Alcova to Glendo gain. The forecast for the North Platte River <br />system is shown in the two tables below. <br />69 V OW y7% 9,9 /3 9,211 551 5Z3 <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 1980 -2009 period. <br />AOP1004 <br />April 1, 2010 Forecast <br />30 Yr. <br />Comparative Actual <br />Forecast <br />of April-July Runoff <br />April -July <br />Expected <br />April -July Runoff <br />Reasonable <br />Reasonabl <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 />Avg. z <br />2009 <br />2008 <br />2007 <br />2006 <br />Seminoe Reservoir <br />950 <br />650 <br />350 <br />706 <br />92 <br />964 <br />956 <br />425 <br />546 <br />Sweetwater River <br />Above Pathfinder <br />1 <br />Reservoir <br />60 <br />40 <br />30 <br />61 <br />66 <br />48 <br />52 <br />24 <br />32 <br />Alcova to Glendo <br />200 <br />120 <br />60 <br />125 <br />96 <br />161 <br />209 <br />102 <br />45 <br />69 V OW y7% 9,9 /3 9,211 551 5Z3 <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 1980 -2009 period. <br />AOP1004 <br />