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.................................................................................................................................. SAN MJ:GUlilL, DOLORES, ANJ:MAS, AND SAN JUAN RJ:VER BASJ:NS Streamflow Forecasts - January 1, 2004 ........................................................................................................-......................~.. <<...... Drier ...... Future Conditions Wetter .....>> I I Forecast Point Forecast .................... Chance Of Exceeding * ...................... I Period 90% 70% 50% (Most Probable) 30% 10% I 30-Yr Avg. (1000AF) (1000AF) I (1000AF) ('ll AVG.) I (1000AP) (1000AF) I (1000AP) .................................................................... .......................1..................................... Dolores River at Dolores APR-JUL 161 220 260 98 I 300 360 265 McPhee Reservoir inflow APR-JUL 200 270 315 98 I 360 430 320 San Miguel River nr Placerville APR-JUL 88 116 135 102 I 154 182 132 Gurley Reservoir Inlet APR-JUL 7.2 13.0 17.0 103 I 21 27 16.5 APRIL 1.70 102 I 1.66 MAY 9.00 102 I 8.83 JUNE 5.00 107 I 4.67 JULY 1.30 99 I 1.32 Cone Reservoir Inlet APR-JUL 1.42 2.70 3.60 102 I 4.50 5.80 3.53 APRIL 0.45 98 I 0.46 MAY 1.65 101 I 1.64 JUNE 1.10 106 I 1.04 JULY 0.40 105 I 0.38 Lilylands Reservoir J:nlet APR-JUL 0.68 2.06 3.00 105 I 3.90 5.30 2.86 APRIL 0.40 100 I 0.40 MAY 1.40 106 I 1.32 JUNE 0.90 103 I 0.87 JULY 0.30 111 I 0.27 Rio.Blanco at Blanco Diversion APR-JUL 37 51 60 113 I 69 83 53 Navajo River at Oso Diversion APR-JUL 41 61 75 109 I 89 109 69 San Juan River nr Carracus APR-JUL 294 383 450 111 I 522 639 405 Piedra River nr Arboles APR-JUL 154 215 260 113 I 305 365 230 Vallecito Reservoir Inflow APR-JUL 131 187 225 110 I 265 320 205 Navajo Reservoir Inflow APR-JUL 565 770 910 114 I 1050 1260 800 Animas River at Durango APR-JUL 255 375 460 105 I 545 665 440 '~emon Reservoir Inflow APR-JUL 32 49 60 103 I 71 88 58 La Plata River at Hesperus APR-JUL 12.6 20 25 100 I 30 37 25 Mancos River nr Mancos APR-JUL 12.1 29 40 100 I 51 68 40 APRJ:L 5.80 100 I 5.80 MAY 15.9 100 I 15.9 JUNE 13.7 100 I 13.7 JULY 4.60 100 I 4.60 .................................................................................................................................. SAN MJ:GUlilL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS I SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS Reservoir Storage (1000 AP) - End of December I Watershed Snowpack Analysis - January 1, 2004 ......................................................................................................~........................... Usable I *** Usable Storage *** I Number This Year as % of Reservoir Capacity I This Last I Watershed of ................. I Year Year Avg I Data Sites Last Yr Average ........................................................................1.......................................~................~ GROUNDHOG 21.7 7.0 3.8 12.0 I ANIMAS RIVER BASIN 7 117 94 I JACKSON GULCH 10.0 2.9 2.5 4.6 I DOLORES RIVER BASIN 4 85 88 I LEMON 40.0 9.2 5.8 20.1 I SAN MIGUEL RIVER BASIN 3 96 90 I MCPHEE 381.2 172.0 159.1 271.1 I SAN JUAN RIVER BASIN 3 159 121 I NARRAGUINNEP 19.0 8.1 7.8 12.7 I TOTAL SAN MIGUlilL, DOLORES 16 118 99 I VALLBCITO 126.0 47.8 32.5 58.6 I AN JUAN RIVER BASINS I .................................................................................................................................. * 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.