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<br />Water Year 1990 <br /> <br />Since the mean annual inflow for Fontenelle Reservoir of 1.2 <br />mof far exceeds the reservoir storage capacity of 345,000 <br />acre-feet, the chances of the reservoir not filling in any given <br />year are minimal, In order to minimize the powerplant <br />bypasses that occur in the spring, the reservoir will be drawn <br />down to the minimum operating pool, elevation 6463 feet, <br />which corresponds to 27 percent of reservoir capacity, by the <br />end of March, <br /> <br />Releases are projected to remain relatively constant this <br />winter with the level of the releases dependent primarily on <br />fall rainstorms. Based on a reasonable maximum inflow, <br />releases will average about 1,250 cfs until the spring runoff <br />when releases would peak betwcen 4,500 and 5,000 cfs, <br />Assuming average inflows, releases will range from 900 cfs to <br />peak flows of2,800 cfs during the spring runoff, Minimum flow <br />commitments of 300 cfs are expected to be exceeded by an <br />additional 500 to 700 cfs throughout the summe' and fall of <br />1990 as releases are made to draw down the reservoir for the <br />following year. These releases not only provide greater <br />benefits to the fishery but also improve the water quality of the <br />river for downstream municipal and industrial uses. Under all <br />but the most adverse inflow assumptions, the reservoir is <br />expected to fill in the spring or summer of 1990, <br /> <br />FONTENELLE STORAGE <br /> <br />1000 ACRE-FEET <br />'00 <br /> <br /> <br />.00 <br /> <br />200 <br /> <br />.00 <br /> <br />"0 <br /> <br />'00 <br /> <br />J F MAN ~ J A 8 0 N D J F N A W J J A . 0 <br />ACTUA~ 1969 AND PROJECTED 1990 <br /> <br />PROJECTED OPERATION 1990 <br />REASONABLE MAXIMUM RELEASES <br /> <br />1000 en <br />. <br /> <br />. <br /> <br /> <br />. <br /> <br />2 <br /> <br />o <br /> <br />MOST PROBABLE RELEASES <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br /> <br />2 <br /> <br />o <br /> <br />REASONABLE MINIMUM RELEASES <br /> <br />. <br /> <br />- - - . - - - - <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />o <br />ONDJFMAMJJASO <br /> <br />6 <br />