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==='==~==~==~==a====================~=======D================~=====D:~===============~==================================a========== <<====== Drier ====== UPPER COLORADO RIVER BASIN Streamflow Forecasts - March 1, 2003 Future Conditions ===============================';=====================~============================================================================ Forecast Point Forecast Period =====--============= 90% (1000AF) 70% (1000AF) ==================================================================== Lake Granby Inflow APR-JUL 132 159 Willow Creek Reservoir Inflow APR-JUL 27 35. WilliamsF6rk Reservoir inflow APR-JUL 60 72 Dillon Reservoir Inflow APR-JUL 86 118 Green Mountain Reservoir inflow APR-JUL 189 219 Muddy Creek blw Wolford Mtn. Resv. APR-JUL 26 38 Eagle River blw Gypsum APR-JUL 187 235 Colorado River nr Dotsero APR-JUL 685 990 Ruedi Reservoir Inflow APR-JUL 79 99 Roaring Fork at Glenwood Springs APR-JUL 375 475 Colorado River nr Cameo APR-JUL 1100 1590 Wetter =====>> I , Chance Of Exceeding * ====================== , 50% (Most Probable) 30% 10%' 30-Yr Avg. (1000AF) (% AVG.) , (1000AF) (1000AF)' (1000AF) =======================1===================================== 180 80' 204 245 225 , I I , , I I I I , I I , , , , , , , I I 42 80 140 240 48 275 1200 115 550 1930 82 84 84 86 80 82 83 82 78 80 49 51 61 89 103 95 162 194 167 262 297 280 61 88 60 322 405 335 1410 1720 1440 134 168 141 630 759 710 2270 2760 2420 UPPER COLORADO RIVER BASIN Reservoir Storage (1000 AF) - End of February ==========================================================================================-=======================================~ I I ==='=":i::i:"= =':S III = = =': =::11== == ==='= == = = == = == = = = == ==== = = ==== = = == === == == = === c=c= == == == == = = == = = == == = = = == = == == = === === = === =m= === == c'= == == = = E:1lI1ll m= == == = === = = = = = *** Usable Storage *** I This Last , 'Year Year Avg I Data Sites Last Yr Average ========================================================================1========================================================= DILLON 250.8 126.0 201.0 216,8 I BLUE RIVER BASIN 8 132 96 1 Reservoir Usable , Capacity' LAKE GRANBY GREEN MOUNTAIN .. HOMESTAKE RUEDI VEGA WILLIAMS FORK WILLOW CREEK UPPER COLORADO RIVER BASIN Watershed Snowpack Analysis - March 1, 2003 Watershed Number of This Year as % of ==~==================================================================================================~==============~=========="=== 465.6 23.6 192.2 281.1 UPPER COLORADO RIVER BASI 34 137 95 139.0 30.9 66.8 70.0 MUDDY CREEK BASIN 4 137 90 43.0 17.0 28.4 26.6 PLATEAU CREEK BASIN 2 161 85 102.0 46.3 63.7 68.0 ROARING FORK BASIN 7 129 86 32.0 4.4 9.6 12.2 WILLIAMS FORK BASIN 4 130 97 96.8 7.7 55.2 57.3 WILLOW CREEK BASIN 4 165 107 9.0 7.1 8.3 6.7 TOTAL COLORADO RIVER BASI 43 137 93 The average is computed for the 1971-2000 base period. * 90%, 70%, 30%, and 10% chances of exceeding are the probabilities that the actual volume will exceed the volumes in the table. (1) - The values .1isted under the 10% and 90% Chance of Exceeding are actually 5% and 95% exceedance levels. (2) - The value is natural volume - actual volume may be affected by upstream water management.