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<br />YAMPA, WHITE, NORTH PLATTE AND LARAMIE RIVER BASINS <br />as of April 1, 2003 <br /> <br />Mountain Snowpack* (Inches) <br /> <br />~Current ---"'-Average <br />___Maximum -+-Minimum <br /> <br />35 <br /> <br /> <br />30 <br /> <br />25 <br />.E <br />oJ <br />c <br />~ 20 <br />" <br />, <br />0- <br />w 15 <br />" <br />. <br />- <br />. <br />;: 10 <br /> <br />5 <br /> <br />o <br />Jan Fob Mar Apt May Jun <br /> <br />-Based on sel~cled slalions <br /> <br />Preclpltation* (% of average) <br /> <br />I_Monthly DYear-lo-dale I <br /> <br /> 120. <br /> 100 <br />. <br />'" 80 <br />~ <br />. <br />~ <br />- 60 <br />0 <br />- <br />c <br />. <br />u <br />" <br />. <br />a. <br /> 20 <br /> <br /> <br /> <br /> <br />Oct Nov Dee Jan Feb Mar Apt May <br /> <br />All of these basins have received good snowfall amounts during March, but some basins were far <br />more fortunate than others. Measurements have ranged from slight increases in pcrcent of <br />avcrage, to some of the largest monthly increases in the state. Thc largest increase was in the <br />Laramie Basin, which received enough snow during March to boost the measurements from only <br />66% of average on March I, to 100% of average on April I. Measurements in the other basins <br />range from 85% of average in the White River Basin, to 100% of average in the North Plalte <br />Basin. Precipitation measurements during March were 105% of average. The water year total is <br />now 92% of average. There has been 131% of the precipitation there was last water year by this <br />time. Reservoirs in the basin have 92% of their average storage for this time of year. There is <br />91 % of last year's storage amount. Streamflow forecasts remain nearly the same as last month at <br />well below average for most of the sites. They range from 62% of average on the White River <br />near Meeker. to 90% of average on the Yampa River at Steamboat Springs. <br />