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<br />UPPER RIO GRANDE RIVER BASIN <br />as of April I, 2000 <br /> <br />Mountain snowpack* (inches) <br /> <br />~Currenl -'-Average <br />___Maximum ---+-Minimum <br /> <br />r <br /> <br />25 <br /> <br /> <br />40 <br /> <br />200 <br /> <br />1 <br />I <br />i <br /> <br />180 <br /> <br />20 <br /> <br />160- <br /> <br />.. 140 <br />Dl <br />co <br />~ <br />.. 120 <br />> <br />C( <br />'0 100 <br /> <br />.5 <br />.- <br />c 15 <br />.. <br />OJ <br />.~ <br />::l <br />CT <br />W <br />.. 10 <br />.. <br />- <br />.. <br />== <br /> 5 <br /> <br />- <br />c <br />.. <br />u <br />~ <br />.. <br />ll. <br /> <br />80 <br /> <br />o <br /> <br />Jan <br /> <br />Feb <br /> <br />May <br /> <br />Mar <br /> <br />Apr <br /> <br />*Based on selected stations <br /> <br />Precipitation* (% of average) <br /> <br />r-Monthly DYear-to-dal~ <br /> <br />60 <br /> <br /> <br />20 <br /> <br />o <br /> <br />Oct Nov Dee Jan Feb Mar Apr May <br /> <br />It will take an extremely wet spring to bring seasonal water supplies to adequate levels in the Rio <br />Grande Basin. Above average snowfall during March was a good start in the right direction, but <br />the overall accumulation still falls well below average, at only 61 % of average. On a positive <br />note, there is 17% more snow in the basin than last year at this time. Snowpack percentages are <br />extremely variable, ranging from only 36% of average in the Alamosa Watershed, to 86% of <br />average in the Culebra and Trinchera watersheds. Precipitation in the basin was 200% of average <br />during March, but the water year total is only 75% of average. The combined reservoir storage in <br />the basin is at 151 % of average, which is 7% more than last year. The Rio Grande Reservoir <br />however, contains only 28% of average storage for this time of year. All of the streamflow <br />forecasts have improved due to the additional snow accumulation during March. The forecasts <br />are extremely variable depending on location, ranging from only 34% of average on the San <br />Antonio River near Ortiz, to 105% of average on Culebra Creek at San Luis. <br /> <br />\ <br />I.. <br /> <br />" <br />