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State Basin Outlook Reports <br />UPPER RIO GRANDE BASIN <br />Reservoir Storage (1000AF) End of December <br /> Usable ********** Usable Storage ********* <br />Reservoir Capacity This Year Last Year Average <br />CONTINENTAL 27.0 2.9 3.1 4.9 <br />PLATORO 60.0 12.6 9.3 24.3 <br />RIO GRANDE 51.0 24.0 19.2 15.1 <br />SANCHEZ 103.0 30.0 13.3 23.9 <br />SANTA MARIA 45.0 6.1 6.4 10.1 <br />TERRACE 18.0 3.7 4.6 5.6 <br />UPPER RIO GRANDE BASIN <br />Watershed Snowpack Analysis - January 1, 2008 <br />Page 13 of 15 <br /> Number of This Year as Percent of <br />Watershed Data Sites Last Year Average <br />------------------------------- <br />ALAMOSA CREEK BASIN -- <br />1 <br />145 <br />137 <br />CONEJOS & RIO SAN ANTONIO BA 2 172 146 <br />CULEBRA & TRINCHERA CREEK BA 3 128 133 <br />UPPER RIO GRANDE BASIN 4 143 132 <br />TOTAL UPPER RIO GRANDE BASIN 10 145 137 <br />? SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS as of January 1, 2008 <br />Snowpacks in the San Miguel, Dolores, Animas and San Juan basins were <br />almost non-existent through most of November. Then, during the last <br />week of November and the first two weeks of December, snowpacks went <br />from near-record lows to near-record highs. SNOTEL data indicates <br />that from November 23 to December 12 the basin accumulated 430 percent <br />of the average snow water equivalent for that time period. Even <br />though snow accumulation since then has been below average, January 1 <br />snowpacks are 129 percent of average. This is the highest January 1 <br />snowpack percentage since 1997 and the second highest figure since <br />1988. Sub-basin snowpacks range from 115 percent of average in the <br />San Miguel Watershed to 145 percent of average in the San Juan. <br />Mountain precipitation was well below average during October and <br />November at 68 percent of average and 59 percent of average, <br />respectively. Oddly enough, the November precipitation percentage in <br />the combined basins was the highest in the state. December <br />precipitation was 223 percent of average and helped to bring the total <br />precipitation for the water year up to 118 percent of average. <br />Reservoir storage was 110 percent of average at the end of December. <br />Near average runoff is forecast for the Dolores and San Miguel basins <br />while the Animas and San Juan basins can expect above to well above <br />streamflows. Volumes are forecast to range from 102 percent of <br />average for the Lilylands Reservoir Inlet to 138 percent of average <br />for the Rio Blanco at Blanco Diversion. <br />SAN MIGLTEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS <br />Streamflow Forecasts - JanuaYy 1, 2008 <br />-------------------------------------------------------------------------------- <br />Drier =_= Future Conditions =_= Wetter <br />Forecast Pt IChance of Exceeding *I <br />Forecast I 90% 70% 1 50% 1 30% 10% 1 30 Yr Avg <br />Period 1(1000AF) (1000AF)1(1000AF) (% AVG.)1(1000AF) (1000AF)l (1000AF) <br />Dolores River at Dolores <br />APR-NL 172 242 300 113 366 480 265 <br />http://www.wcc.nres.usda.gov/cgibin/bor2.p1?state=co&year=2008&month=l&format=text 4/14/2008