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<br />SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS <br />as of June 1,2001 <br /> <br />Mountain Snowpack* (inches) <br /> <br />Precipitation' (% of average) <br /> <br />I~ current.-.-. AVerage] <br />___Maximum -+-Minimum <br /> <br />I_MonthlY DYear-to-da~ <br /> <br />45 <br /> <br /> <br />140 <br /> <br /> 40 <br /> 35 <br />.5 30 <br />.. <br />c:: <br />G> <br />'iii 25 <br />.:!: <br />::I <br />.,. 20 <br />w <br />.. <br />G> <br />- <br />~ 15 <br /> 10 <br /> 5 <br /> 0 <br /> Jan Feb Mar Apr May Jun <br /> <br />G> <br />Cl 120 <br />co <br />.. <br />G> <br />~ 100 <br />... <br />o <br />- <br />c:: <br />G> <br />l:! <br />~ 60 <br /> <br /> <br />160 <br /> <br />20 <br /> <br />o <br /> <br />Oet Nov Dee Jan Feb Mar Apr May <br /> <br />*Based on selected stations <br /> <br />Warm temperatures and below average precipitation have caused the snow at most of the snow <br />measuring sites in these basins to melt away by June I. Only 5 out of 16 SNOTEL sites have <br />snow remaining on them, and those measurements make a basinwide percent of average of only <br />32%. Most of the remaining snow is in the San Juan Basin, which has 45% of average snow <br />accumulation left. There is no measurable snow left in the Dolores and San Miguel basins. <br />Precipitation during May was 86% of average, and the water year total is now 106% of average <br />on June I. The combined reservoir storage level for 6 major reservoirs in these basins has <br />improved significantly since last month, and is 95% of average for this time of year. There is 87% <br />of the storage there was last year at this time. The streamflow forecasts for the remaining runoff <br />season are extremely variable depending on location and snowpack conditions. Forecasts range <br />from only 29% of average at the Inlet to Gurley Reservoir, to 125% of average at the Inflow to <br />Vallecito Reservoir. <br />