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<br />., ., <br /> <br />2 <br /> <br />GREEN RIVER BASIN: Water supply forecasts above Flaming Gorge dropped 5 to 10% <br />from those issued last month. Below the dam, forecasts changed very little. <br />The outlook still appears good throughout the Green River Basin with forecasts <br />ranging 90 to 215% of normal. Flood potential for the Green River Basin varies <br />but 'is highest in the Huntington, Price, San Rafael and Blacks Fork drainages. <br /> <br />March precipitation above Flaming Gorge was greater than 120 percent of average <br />on the east side of the basin and generally 60 percent on the west side. The <br />Uintas averaged 70 to 90 percent and along the Wasatch Range 100 to 115 percent. <br />Seasonal precipitation, October through March, is greater than 150 percent of <br />average above Flaming Gorge. Below the reservoir, seasonal precipitation was <br />120 to 200 percent at the higher elevation and near normal in the valleys. <br /> <br />Soil Conservation Service measurements at the end of March indicate the follow- <br />ing basin averages: White - 122%, Yampa - 122%, Strawberry - 117%, Green River <br />above Flaming Gorge - 8J%, and above Fontenelle Reservoir - 78%. <br /> <br />Streamflows are still above normal throughout the Green River Basin. Flow <br />during March on the Green River at Green River, Utah was J59,000 acre-feet, <br />141%; Yampa at Steamboat Springs was 8,800 acre-feet, 102%; Whiterocks near <br />Whiterocks was 2,JOO acre-feet, 15J%; inflow to Fontenelle Reservoir was <br />55,000 acre-feet, IJl% and inflow to Flaming Gorge Reservoir was IJJ,OOO acre- <br />feet, 146%. <br /> <br />Streamflow, for October through March, on the <br />was 1.66 million acre-feet, 186% of average. <br />record for this period, dating back to 1911. <br /> <br />Green River at Green River, Utah <br />This is the highest flow of <br /> <br />Reservoir storage in Fontenelle Reservoir was 167,000 acre-feet, 90% of average <br />and 48% of capacity. Flaming Gorge end-of-month storage was J.055 million acre- <br />feet, IJJ% of average and 81% of capacity. <br /> <br />SAN JUAN RIVER BASIN: The water supply outlook for the San Juan Basin is for <br />near normal flows or slightly above. Streamflow forecasts decreased for the <br />third consecutive month with declines ranging from zero to 10 pervent from those <br />issued last month. Forecast flows range from 107 percent for Vallecito Reservoir <br />Inflow to 130% on the La Plata at Hesperus. <br /> <br />March precipitation was near normal around the rim of the basin but decreased <br />significantly at lower elevations with several reports less than 50% of average. <br /> <br />Seasonal precipitation, October through March, is near normal ranging from 85 to <br />110% of average. Since January 1 precipitation over the basin has averaged 60% <br />of normal, <br /> <br />Snow surveys on April 1 indicate an average basin snowpack of 105% on the Animas <br />drainage and lll% for the entire San Juan Basin. This compares to a January 1 <br />average for -Lhe San Juan drainage of 184% of normal. <br />