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<br />. <br />The April 1, 1991. water Bupply forecast indicates below average runoff for all watersheds <br />of the Baein. For the past three years the actual April through July snowmelt has been <br />closer to the minimum April f6recast than to the most probable forecast. The most <br />probable forecast is based on the assumption that normal weather conditions will OCCur <br />after April 1. For the past three years weather conditions have produced les8 than normal <br />runoff and BO far this year that trend closely resembles recent years <br /> <br />\~d60.i, <br /> <br />WATER SUPPLY FORECAST <br /> <br />. <br /> <br />.. <br /> <br /> Kay 1, " forecast of Comparative Actual <br /> May-Ju1 vol + actual Apr April-July volumes <br /> Most <br /> Prob- <br /> Reason- Most Reason- 30- able <br />Forecast able Prob able WY WY WY WY Year , <br />Points Min 11 able 11 Max 11 1990 1989 1988 19B7 Avq. 2J Avg. <br />Seminoe . <br />Reservoir 345 555 765 417 27' 73. 351 7B7 71\ <br />Sweetwater River <br />above Pathfinder <br />Reservoir 40 60 .5 26 18 33 57 6. 87\ <br />Alcova to <br />Glendo il 40 .0 140 31 0 116 .2 16. 53' <br /> <br />-, <br /> <br />(1,000 acre-feet) <br /> <br />liThe probability is estimated to be 8 chances in 10 that the actual volume will fall <br />between the reasonable minimum and reasonable maximum. <br />2/1961-1990 average. <br />lIThe most probable forecast assumes average precipitation will occur during May through <br />July. <br />~/River gain between Alcova and Glendo Reservoirs. <br /> <br />COOPERATORS <br /> <br />Many organizations and individuals furnish information for the Water supply and <br />Utilization Report. Their cooperation is gratefully appreciated, especially: <br /> <br />Soil Conservation Service <br />Snow Survey Units <br />Denver, Colorado <br />and <br />casper, Wyoming <br /> <br />Department of Commerce <br />NOAA, National Weather Service <br />Denver, Colorado <br />Cheyenne, Wyoming <br /> <br />BUreau of Reclamation <br />Joint Operations Center <br />Water and Power Control Division <br />Loveland, Colorado <br />