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================================================================================================================================== UPPER COLORADO RIVER BASIN Streamflow Forecasts - January 1, 2003 ================================================================================================================================== I <<====== Drier ====== Future Conditions Wetter =====>> 1 Forecast Point Forecast I ==================== Chance Of Exceeding * ====================== Period 1 90% 70% 50% (Most Probable) 30% 10% 30-Yr Avg. I (1000AF) (1000AF) 1 (1000AF) (% AVG.) 1 (1000AF) (1000AF) I (1000AF) =================~==================================================1=======================1===================================== Lake Granby Inflow . -.-...-. --- APR-JUL 127 159 1 185 82 I 215 269 225 1 1 Willow Creek Reservoir Inflow APR-JUL 26 37 1 45 88 I 54 70 51 1 1 Williams Fork Reservoir inflow APR-JUL 54 69 1 80 84 1 92 111 95 1 1 Dillon Reservoir Inflow APR-JUL 72 111 1 140 84 I 169 212 167 1 I Green Mountain Reservoir inflow APR-JUL 185 217 1 240 86 I 264 302 280 I I Muddy Creek blw Wolford Mtn. Resv. APR-JUL 30 40 I 50 83 I 62 85 60 I I Eagle River blw Gypsum APR-JUL 189 244 I 290 87 1 345 446 335 I I Colorado River nr Dotsero APR-JUL 576 893 I 1150 80 1 1407 1785 1440 I I Ruedi Reservoir Inflow APR-JUL 85 107 1 125 89 1 146 184 141 1 1 Roaring Fork at Glenwood Springs APR-JUL 417 536 1 625 88 1 721 874 710 1 - 1 Colorado River nr Cameo APR-JUL 1004 1597 I 2000 83 I 2403 2996 2420 I 1 UPPER COLORADO RIVER BASIN Reservoir Storage (1000 AF) - End of December ================================================================================================================================== UPPER COLORADO RIVER BASIN Watershed Snowpack Analysis - January 1, 2003 I I =========================_=======================_====================================================a=========================== Usable 1 *** Usable Storage *** 1 Number This Year as % of Capacity 1 This Last 1 Watershed of ================= 1 Year Year Avg I Data Sites Last Yr Average ==============~===-========================~=~=========3================1============_====__=_==================================== 224.8 I I 322.1 I I 90.3 I I 28.4 I I 79.7 I 1 11,0 1 I 62,9 I I 6.1 I I Reservoir , DILLON 250.8 140.8 214.1 LAKE GRANBY 465.6 243.3 70,4 GREEN MOUNTAIN 139.0 71.8 35.7 HOMESTAKE 43.0 28.5 17.0 RUED I 102.0 66.3 46.8 VEGA 32.0 3.6 WILLIAMS FORK 96.8 58,6 8,9 WILLOW CREEK 9.0 6.6 =============================~===================-=.=======-========-============================================================= 8.7 6.3 BLUE RIVER BASIN 94 5 133 UPPER COLORADO RIVER BASI 132 92 18 MUDDY CREEK BASIN 134 91 2 PLATEAU CREEK BASIN 132 86 2 ROARING FORK BASIN 120 98 6 WILLIAMS FORK BASIN 78 2 104 WILLOW CREEK BASIN 111 2 185 TOTAL COLORADO RIVER BASI 93 26 129 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 listed under the 10% and 90% Chance of Exceeding are actually 5% and 95% exceedance levels. (2) - Th~ value is natural volume - actual volume may be affected by upstream water management.