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<br />101 904 <br /> <br />UPPER RIO GRANDE BASIN <br />as of June 1, 2002 <br /> <br />"I <br /> <br />Mountain Snowpack* (inches) <br /> <br />Preclpltation* (% of average) <br /> <br />I__Current --*-Average I <br />__Maximum __Minimum I <br /> <br />I_Monthly IIlIYe.ar-!():~ate I <br /> <br />25 <br /> <br /> <br />80 <br /> <br />70 <br /> <br /> <br /> 20 <br />.!: <br />-oJ <br />c 15 <br />~ <br />co <br />> <br />':; <br />C" <br />w <br />.. 10 <br />.l!l <br />~ <br /> 5 <br /> <br />60 <br /> <br />.. <br />Cl <br />f! 50 <br />.. <br />> <br />cI: <br />'0 40 <br />... <br />c <br />.. <br />l:! 30 <br />.. <br />D.. <br /> <br />20 <br /> <br />10 <br /> <br />o <br /> <br />o <br /> <br />Oct Nov Dec Jan Feb Mar Apr May <br /> <br />Jan <br /> <br />Feb <br /> <br />Mar <br /> <br />Apr <br /> <br />May <br /> <br />'Based on selected stations <br /> <br />It is no surprise that the June 1 snowpack measurements are a big fat zero at all ofthe SNOTEL <br />snow measuring locations in the Rio Grande Basin. After the record setting, low snow <br />measurements last month, the continued warm temperatures and dry conditions made sure that all <br />of the measurable snow was melted by mid-May leaving dry slopes nearly two months ahead of <br />the average melt out date. The precipitation during May was only 18% of the average monthly <br />amount, which is the lowest monthly accumulation this water year. The water year total is now <br />only 48% of average, which is only 45% of last year's amount on June I. Reservoirs in the basin <br />have a storage level of only 64% of average on June 1. There is about 45% less storage than there <br />was last year at this time. The continued dry and warm conditions through May have caused the <br />streamflow forecasts to be lowered even further from last month. Now the forecasts range from <br />only 4% of average flow on the San Antonio River at Ortiz, to 25% of average at the Inflow to <br />Rio Grande Reservoir. <br />