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<br />UPPER RIO GRANDE BASIN <br />as of April 1, 2002 <br /> <br />" <br /> <br />, <br /> <br />Mountain Snowpack* (inches) <br /> <br />Preclpitatlon* (% of average) <br /> <br />i ~ Current ---.-Average <br />_Maximum -+-Minimum <br /> <br />I_Monthly Ii!IYear-to-date I <br /> <br />25 <br /> <br /> <br />80- <br /> <br /> <br /> <br />o <br />Jan <br /> <br />Oct Nov Dec Jan Feb Mar Apr May <br /> <br />Feb <br /> <br />Mar <br /> <br />Apr <br /> <br />May <br /> <br />.Based on selected stations <br /> <br />,I <br /> <br />Although there-was some additional snowfaltduringMarch, early snowmelt has reduced the <br />amount of snow in the Rio Grande Basin to just slightly less than the amount on March I. The <br />measurements are only 38% of average on April I, which is only 35% of the amount there was <br />last year at this time. The snowpack measurements range from only 25% of average in the <br />Alamosa Creek Watershed, to 45% of average in the Culebra and Trinchera Creek watersheds. If <br />the warm temperatures and lack of snowfall continue this spring many of the snow measuring <br />sites may melt out as much as 60 days ahead of the normal melt out date. The precipitation during <br />March was only 56% of the average monthly amount. The water year total is now only 52% of <br />average. Reservoirs in the basin have a storage level of only 76% of average on April 1. There is <br />about 12% less storage than there was last year at this time. Streamflow forecasts for the runoff <br />season are below 50% of average at all of the forecast points. They range from only 16% of <br />average at San Antonio River at Ortiz, to 43% of average at the Inflow to Rio Grande Reservoir. <br /> <br />" <br />