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<br />Upper Basin Reservoirs <br />Fontenelle Reservoir <br />(Green River) <br /> <br /> <br />On shore 0' Fonlenelle Reservoir looking downstream <br /> <br />Water Vear 1981 <br />Fontanelle Reservoir is operated for power <br />generation, water supply. flood control. fish <br />and wildlife enhancement, and recreation. <br />The water surface was gradually lowered <br />from an elavation of 6.500 feet at lhe <br />beginning of the water year to a low of 6.482 <br />feet in May 1981, By mid-July the reservoir <br />elevation came within two-tenths of a foot of <br />filling, <br /> <br />The minimum release during the fall and <br />winter was 700 fPl5. The maximum release for <br />the water year was 1.775 fl'ls, The maximum <br />inflow of 7,937 fPls occurred on June 11, The <br />minimum release tOT power generation is 500 <br />tPls; the maximum reiease through the <br />powerplant is 1,750 fP/s at rated head, A total <br />of 792,000 acre-feet was released from the <br />reservoir with only 3,000 acre-feet by-passing <br />the powerplanL <br /> <br />6 <br /> <br />Water Yeer 1982 <br />At the beginning of water year 1982, the <br />elevation at Fontenelle Reservoir was 6.493 <br />feet with a content of 245,000 acre-feel. <br />Releases from the reservoir, assuming <br />average runoff conditions. will be scheduled <br />to draw the water down to 6.4 79 feet prior to <br />the spring runoff, <br /> <br />The reservoir Is scheduled to fill in June 1982 <br />unless the inflow Is considerably less than <br />average. After the spring runoff, the reservoir <br />level will be controlled by adjusting the <br />reieases through the powerplant to gradually <br />reduce the elevation to 6,504 feet by the end <br />of the summer at 1982, <br /> <br />The maximum release \s dependent primarily <br />on the magnitude of the infiow, If the inflow is <br />in the upper quartile, peak outflow is expected <br />to be less than 10,000 fI'ls, With an average <br />inflow, the anticipated peak outflow is less <br />than 5.000 fl'ls, Assuming a lower quartile <br />infiow, the outflow will probably be no greater <br />than 3,000 fP/s, <br /> <br />Reservoir <br /> <br />Fontenelle Activa Storage" <br /> <br />Maximum Storaga <br />Rated Head <br />Minimum Power <br />Surface Area (Full) <br />Resarvolr Length <br />(Full) <br />Power Plant <br /> <br />Number of Units <br />Total Capacity <br /> <br />(Acre. Feet) <br /> <br />344,834 <br />233,789 <br />194,962 <br />8058 Acres <br /> <br />18 Miles <br /> <br />Chart 1 <br />EI.(Fl.) <br />6506 <br />6491 <br />6485 <br /> <br />"doea nol Include 563 acre.leet or dead storage <br />below 6408 leel <br /> <br />1 <br />10,000 Kilowatts <br />