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<br />SAN MIGUEL, DOLORES, ANIMAS, AND SAN JUAN RIVER BASINS <br />as of March 1, 1999 <br /> <br />Mountain Snowpack. (inches) <br /> <br />__Current __Averege <br />__Maximum __Minimum <br /> <br />40 <br /> <br /> <br />35 <br /> <br />30 <br /> <br />,5 <br />'i 25 <br />.. <br />ii <br />> <br />.S 20 <br />cr <br />W <br />... <br />.. 15 <br />'Ii <br />~ <br /> <br />10 <br /> <br />5 <br /> <br />o <br /> <br />Jan Feb Mar Apr May Jun <br /> <br />.Based on selected stations <br /> <br />Precipitation. (% of average) <br /> <br />I_Monthly [!Year-to.date I <br /> <br />250 <br /> <br />200 <br /> <br /> <br />.. <br />Dl <br />~ 150 <br />< <br />o <br />c <br />.. 100 <br />~ <br />.. <br />IL <br /> <br />50 <br /> <br />o <br /> <br />Oct Nov Dee Jan Feb Mar Apr May <br /> <br />The snowpack amounts in these basins have the lowest percentage of average in the State at only <br />74% of average, Even with the low amounts of snow, there is still 4% more than last year at this <br />time, The snowpack percentages of average range from only 66% in the Dolores Watershed, to <br />90% in the San Juan Watershed, Dry conditions persist in these basins as only 48% of the average <br />precipitation fell during February, The water year total is now only 97% of average, which is the <br />first time it has been below average this wateryear, Combined reservoir storage levels in these <br />basins is 100% of average for this time of year, which is only 83% of the level last year at this time, <br />Below average precipitation and snowpack through February have driven the streamflow forecasts <br />for this runoff season down from last month, The forecasts are highly variable depending on <br />location and snowpack conditions, Forecasts range from only 60% of average on the La Plata River <br />at Hesperus, to 82% of average on the San Miguel River near Placerville, <br />