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<br />GUNNISON RIVER BASIN <br />as of June 1, 2004 <br /> <br />Mountain Snow pack- (inches) <br /> <br />Precipitation- (% of average) <br /> <br />-*-Current -'-Average <br />___Maximum -"-Mlnimum <br /> <br />j_Monthly DYear.lo-dale I <br /> <br />30 <br /> <br /> <br /> 160 <br /> 140 <br /> 120 <br />. <br />'" <br />. 100 <br />" <br />. <br />> <br /><( <br />- 60 <br />0 <br />C <br />. <br />u 60 <br />" <br />. <br />0. <br /> <br /> <br /> <br /> 25 <br />C 20 <br />- <br />c <br />~ <br />. <br />,> '5 <br />, <br />CT <br />W <br />" <br />. <br />- <br />. 10 <br />;: <br /> 5 <br /> <br />o <br /> <br /> <br />Oct No... Dee Jan Feb Mar Apr May <br /> <br />Jan Feb Mar Apr May Jun <br /> <br />-Based on selcch:d stations <br /> <br />Very rapid melting of the snowpack in the Gunnison Basin has driven the snow measurements <br />from 77% of avcrage on May I, to only 26% of avcrage on June I, There is about 23% more <br />snow in the basin this year than at the same time last year. Measurements range from 43% of <br />average in the Surface Creek Watershed, to 23% of avcrage in the Uncompahgre Watershed, <br />Most of the measuring sites in the basin have completely meltcd oul. The amount of precipitation <br />during May was thc lowest monthly accumulation this water year, TIlere was only 32% of the <br />average monthly amount, and the total water year accumulation up to June I is only 87% of <br />average, Fortunately thc rcservoir storage in the basin continues to be above averagc, which is <br />more than can be said for reservoir storage in the other basins in the state, The combined storage <br />of the eight major rescrvoirs is 107% of average, which is 23% more than last year at this timc, <br />Streamflow forecasts throughout the basin have dropped signilicantiy from last month, Flows at <br />Grand Junction are now only 58% ofavcrage. <br />