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............~.................._.................................................................................................. <<...... Drier ...... UPPER COLORADO RIVER SASIN Streamflow Forecasts - April 1, 2004 Future Conditions .................................................................................................................................. Wetter .....>> I I Chance O~ Exceeding * .............a........ 1 50% (Most Probable) 30% 10% I 30-Yr Avg. (1000AP) (% AVG.) I (lOOOAF) (1000AF) I (1000AF) .......................1..................................... I I I I I I I I I I I I I I I I I I I I I I Forecast Point Porecast Period 90% (1000AF) 70% (1000AF) .................... ..............................................................~..... Lake Granby Inflow APR-JUL 99 117 Willow Creek Reservoir Inflow APR-JUL 15.5 22 Williams Pork Reservoir inflow APR-JUL 46 55 Dillon Reservoir Inflow APR-JUL 51 80 Green Mountain Reservoir inflow APR-JUL 145 165 Muddy Creek blw Wolford Mtn. Resv. APR-JUL 19.7 25 Eagle River blw Gypsum APR-JUL 145 176 Colorado River nr Dotsero APR-JUL 355 635 Ruedi Reservoir Inflow APR-JUL 59 71 Roaring Pork at Glenwood Springs APR-JUL 302 373 Colorado River nr Cameo APR-JUL 595 1035 130 27 62 100 180 30 200 825 80. 425 1330 58 53 65 60 64 50 60 57 57 60 55 145 170 225 33 42 51 69 81 95 120 149 167 195 219 280 36 46 60 228 275 335 1015 1295 1440 91 109 141 481 710 569 UPPER COLORADO RIVER BASIN Reservoir Storage (1000 AF) - End of March .................................................................................................................................. 1630 2060 2420 Reservoir LAKE GRANBY 465.6 174.0 15.4 GREEN MOUNTAIN 139.0 61.4 29.4 HOMESTAXE 43.0 21.9 17.0 RUEDI 102.0 61.2 46.1 VEGA 32.0 12.1' 5.1 WILLIAMS PORK 96.8 58.2 7.7 WILLOW CREEK 9.0 6.6 7.5 .................................................................................................................................. UPPER COLORADO RIVER SASIN Watershed snowpack Analysis - April r. 2004 37 57 60 MUDDY CREEK BASIN UPPER COLORADO RIVER BASI 4 64 59 3 99 82 I I .................................................................................................................................. Usable I *** Usable Storage *** I Number This Year as % of Capacity I This' Last l Watershed of ................. I Year Year Avg I Data Sites Last Yr Average ........................................................................1..................................................=...... DILLON 250.8 212.1 120.8 214.5 I BLUE RIVER BASIN 9 60 66 I 263.7 I I 59.8 I 22.5 I I 61.9 I I 13.1 I I 54.8 I I 6.8 I I PLATEAU CREEK BASIN ROARING PORK BASIN WILLIAMS FORK BASIN WILLOW CREEK BASIN 8 75 61 4 58 66 4 39 47 TOTAL COLORADO RIVER SASI 48 63 62 * 90%. 70%. 30%. and 10% chances of exceeding are the probabilities that the actual volume will exceed the volumes in the table. The average is computed for the 1971-2000 base period. (1) _ The values listed 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.