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ARKANSAS RIVER BASIN <br />as of April 1, 2003 <br />Mountain Snowpack* (inches) <br />--X Current A Average <br />—a-- Maximum —0 Minimum <br />18 <br />16 <br />14 <br />12 <br />c <br />m <br />10 <br />W 8 <br />d <br />{° 6 <br />4 <br />2 <br />0 <br />Jan Feb Mar Apr May <br />*Based on selected stations <br />The Arkansas Basin received a huge amount of snow during March, thanks mostly to a large <br />storm that dropped record amounts of snow on the Colordo Front Range during three days in the <br />middle of the month. The basin -wide snowpack measurements are 100% of average on April l; <br />which is 209% of the amount of snow there was last year at this time. The measurements range <br />from 93% of average in the Upper Arkansas Watershed, to 110% of average in the Purgatoire <br />Watershed. Precipitation measurements for the month of March were 139% of average, and the <br />water year total is now 94% of average: There has been about 151 % of the precipitation there was <br />last water year by this time. Reservoirs in the basin have only 46% of their average storage <br />amount for the end of March. There is only 60% of the storage there was last year at the end of <br />March. Streamflow forecasts have improved significantly from last month and are approaching <br />average volumes on many of the forecast points. They range from 85% of average at the inflow to <br />Pueblo Reservoir, to 96% of average on the Huerfano River near Redwing. <br />