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<br />MfJ:50 <br /> <br />;Streamflow:Forec8sts <br /> <br />,Streamflow .forecast ,data :are prepared by the Soil Conservation Service and the <br />National Weather :Ser:vice, Forecast data 'are compiled ,as of the first day of each <br />month during the ,winter and spring months, Forecasts are important to reservoir <br />operators because ,they provide .another indicator of reservoir inflow to be used in <br />,determining how the spring runoff is likely to ,occur and how reservoirs should be <br />,operated, <br /> <br />The maps on the following pages ;showaSllmmary of streamflow predictions that <br />>were available during the late Winter and .spring of 1990. It was apparent, based <br />upon these forecasts, that much below average streamflow was likely over a large <br />portion of the West. <br /> <br />In February,streamflow forecasts showed less than 70 percent of average flows <br />anticipated for the Colorado River Basin, the Sierra Nevada streams that feed <br />reservoirs of the Central Valley Project in California, and the upper Snake River <br />basin, Above average streamflow forecasts were largely limited to the upper Missouri <br />River basin and portions of the Columbia River Basin. <br /> <br />As the season progressed, forecast conditions did not improve; in many areas, the <br />predicted percentage of average flow became less and less, By April, it was clear that <br />many reservoirs would not refill from the low levels of the end of the last season. <br /> <br />17 <br />