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<br />SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS <br />as of April 1, 2003 <br /> <br />Mountain Snowpack* (Inches) <br /> <br />-X-Current -.-Average <br />_Maximum -+-Minimum <br /> <br /> 45 <br /> 40 <br /> 35 <br />0 30 <br />- <br />0 <br />.!! 25 <br />. <br />.~ <br />, <br />IT 20 <br />w <br />. <br />. <br />- <br />. 15 <br />;: <br /> 10 <br /> 5 <br /> 0 <br /> Jan Feb Mar Apr May Jun <br /> <br /> <br />*Bast'd on seleeled stations <br /> <br />Precipitation. ('to of average) <br /> <br />I_Monthly OYear-lo-dale I <br /> <br /> <br /> <br /> 120 <br /> 100 <br />. <br />0> <br />e <br />. <br />> <br />'" <br />- 60 <br />0 <br />- <br />0 <br />. <br />u <br />. <br />. 40 <br />0. <br /> 20 <br /> 0 <br /> Ocl No, Dec Jan Feb Mar Apr May <br /> <br /> <br />These basins have missed out on nearly all of the stom1 activity that much of the rest of the state <br />has benefited from. Basin-wide snowpack measurements for thcse basins combincd are only 75% <br />of avcragc on April I, which is 2% of average lower than last month. It is the only basin-wide <br />measurement in the state that is lower this month compared to last month's measurement. All of <br />the basins are much below average, ranging from only 70% of average in the Animas Basin. to <br />85% of average in the San Miguel Basin. Precipitation during March was only 72% of average, <br />and the water year total is only 80% of average. There has been 160% of the amount of <br />precipitation last water year by this time. Reservoirs in these basins have only 60% of their <br />average storage amount for this time of year, which is only 75% of last year's storage. Most of the <br />streamflow forecasts remain similar to last months', and are still well below average. They range <br />from only 48% of average on the Piedra River near Arboles, to 72% of average on the San Miguel <br />River near Placerville. <br />