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April 16, 2008 Bureau of Reclamation - Wyoming Area Office Page 1 of 4 <br />Table 1. North Platte River System Monthly Operating Plan data for Water Year 2008 <br />Projected Total System Inflow for Water Year 2008: 1000 x acre-feet <br /> Oct Nov Dec Jan Feb Mar A r Ma Jun Jul Au Se Total <br />Reasonable Minimum 153.8 209.5 186.8 45.3 13.3 18.0 <br />Expected # 39.7 32.5 32.5 32.3 35.3 57.9 178.3 320.7 338.8 102.8 43.3 36.9 1251.0 <br />Reasonable Maximum 167.8 441.2 513.2 182.0 80.6 65.2 <br />Water Year 2007 49.2 46.1 35.4 31.5 42.8 129.8 128.9 270.2 118.9 39.0 29.2 28.2 949.2 <br />Average 1978-2007 49.9 47.6 39.2 42.4 47.9 88.9 162.2 329.4 327.6 111.9 44.9 39.5 1331.4 <br />Projected Guernsey Reservoir Outflow for Water Year 2008: 1000 x acre-feet <br /> Oct Nov Dec Jan Feb Mar A r Ma Jun Jul Au Sepl l Total <br />Reasonable Minimum 0.4 10.0 103.8 306.0 280.0 33.0 <br />Expected # 0.2 0.2 0.1 0.3 0.5 0.6 20.0 162.1 150.0 307.0 282.0 33.0 956.0 <br />Reasonable Maximum 20.0 162.1 170.0 307.0 282.0 33.0 <br />Water Year 2007 0.1 0.1 0.1 0.3 0.3 0.5 17.0 44.1 189.8 320.8 283.2 36.3 892.6 <br />Average 1978-2007 9.4 2.7 0.8 0.5 1.8 17.0 54.0 123.0 172.2 325.3 288.5 139.8 1135.0 <br />Projected Total System End-of-Month Storage* for Water Year 2008: 1000 x acre-feet <br /> Oct Nov Dec Jan Feb Mar A r Ma Jun Jul Au Se <br />Reasonable Minimum 1070.2 1244.1 1297.8 1001.4 712.5 683.0 <br />Expected # 743.5 775.0 806.4 835.3 868.4 923.9 1075.0 1208.0 1365.9 1125.7 863.7 851.3 <br />Reasonable Maximum 1064.7 1312.8 1618.7 1453.6 1218.0 1231.3 <br />Water Year 2007 852.6 896.4 929.5 958.6 999.3 1124.9 1223.8 1428.5 1320.3 1001.1 716.9 706.3 <br />Average 1978-2007 1468.7 1510.2 1546.0 1584.6 1627.1 1692.0 1787.0 1963.5 2077.3 1819.1 1538.7 1419.2 <br />' includes Kortes Reservoir Content of 4.8 kaf and Gray Reef Reservoir Content of 1.8 kaf <br /># Actual data from October through March <br />Table 2. NORTH PLATTE ESTIMATED APRIL-IULY RUNOFF <br />The April 7, 2008, water supply forecast indicates near or below average Aprii - July runoff can be expected as shown below. <br />(1000 acre-feet) <br /> April 7, 2008 Forecast 30 Yr. Comparative Actual <br />Forecast of A ril-Jul Runoff April-luly Expected April - July Runoff <br />Points Reasonable Expected Reasonable Runoff % of Avg. W. Yr. W. Yr. <br />1 W. Yr. <br />1 W. Yr. <br /> Maximum' Minimum' Avg. = 2007 2006 2005 2004 <br />Seminoe Reservoir 1000 750 500 704 107 425 546 733 277 <br />Sweetwater River <br />Above Pathfinder <br />Reservoir 70 50 30 62 81 24 32 66 34 <br />Alcovato Glendo 140 100 60 121 83 102 45 39 34 <br />900 887 101 551 623 838 345 <br />' The probability is estimated to be 9 chances in 10 that the actual volume will fatl between the reasonable minimum and reasonable maximum. <br />' Average is based on the 19784007 period. <br />AOP0804.x1s