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Table S-5.-Upper Limit <br />Drawdown Levels <br />Unregulated Inflow May l Upper <br />Percentage Limit Drawdown <br />Exceedance Range Level <br />1 to 10 6023 <br />10.1 to 30 6024 <br />30.1 to 40 6025 <br />40.1 to 59.9 6027 <br />Reclamation would determine the appropriate reservoir drawdown based on the <br />percentage exceedance of the forecasted inflow volume during the spring (April through <br />July). The forecast is issued twice during March and twice during April. Under normal <br />operations during the transition period, releases would be limited to a range from 800 cfs <br />to powerplant capacity (4,600 cfs). <br />Hourly releases during the transition period would be patterned so that they are consistent <br />with the hourly release patterns established during the preceding base flow period. The <br />2000 Flow and Temperature Recommendations do not address hourly patterns during the <br />transition period. During the transition period, Reclamation would maintain the same <br />fluctuation constraints as in the preceding base flow period to provide operational <br />consistency as has been done historically. <br />S.14 ENVIRONMENTAL CONSEQUENCES <br />This section summarizes the DEIS analyses and comparisons of predicted environmental <br />effects under both the Action and No Action Alternatives. <br />S.14.1 Hydrology <br />Tables S-6, S-7, and S-8 present the key flow parameters and ranges described in both the <br />1992 Biological Opinion (No Action Alternative) and the 2000 Flow and Temperature <br />Recommendations (Action Alternative) under dry, average, and wet hydrological <br />conditions. The 2000 Flow and Temperature Recommendations report also provides <br />recommended flow regimes for moderately wet and moderately dry hydrologic <br />conditions; however, because the 1992 Biological Opinion does not address these <br />conditions, they have been omitted from this comparative analysis. <br />The 1992 Biological Opinion does not specifically define the differences between wet, <br />average, and dry hydrological conditions but rather, suggests that Reclamation and the <br />U.S. Fish and Wildlife Service consult each year to make this determination. The <br />2000 Flow and Temperature Recommendations are more specific about how the <br />hydrology of the upper Green River Basin is to be characterized. <br />S-28 A Operation of Flaming Gorge Dam Draft EIS