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<br />UPPER RIO GRANDE RIVER BASIN <br />as of March 1, 1999 <br /> <br />Mountain Snow pack" (inches) <br /> <br />Precipitation" (% of average) <br /> <br />__Current __Average <br />__Meximum __Minimum <br /> <br />I_MonthlY IlJVear-to-date I <br /> <br />40 <br /> <br />5 <br /> <br /> <br />300 <br /> <br />35 <br /> <br />50 <br /> <br /> <br />250 <br /> <br />30 <br /> <br />,5 <br />i 25 <br />.!! <br />II <br />> <br />':; 20 <br />M <br />.. <br />.. 15 <br />1ii <br />~ <br /> <br />8. 200 <br />I! <br />~ <br />c( <br />.... <br />o <br />- <br />c <br />.. <br />l:! <br />.. 100 <br />Q. <br /> <br />150 <br /> <br />10 <br /> <br />o <br /> <br />o <br /> <br />Oct Nov Dee Jan Feb Mar Apr May <br /> <br />Jan <br /> <br />Feb <br /> <br />Mar <br /> <br />Apr <br /> <br />May <br /> <br />.Based OD selected statioDS <br /> <br />The Rio Grande basin's snowpack continued to lose ground during February. The amount of snow <br />in the Basin is only 79% of average on March 1, which is 10% of average less than last month, <br />Most of the watersheds in the Basin have snowpack amounts of about 74% of average, with the <br />exception of the Rio Grande Basin above Del NoTte, which is at 90% of average, There is 2% more <br />snow now than there was last year at this time, There was only 73% of average precipitation during <br />the month of February, and the wateryear total is now 138% of average, The combined reservoir <br />storage level in the basin is at 144% of average, which is 12% more than last year at this time, As <br />expected due to lower than average precipitation and snowpack, the streamflow forecasts for this <br />runoff season are down from last month, The forecasts vary throughout the basin, depending mostly <br />on location and existing snowpack conditions, Forecasts range from only 46% of average at <br />Costilla Creek near Costilla, to 72% of average at the inflow to Rio Grande Reservoir, <br />