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Description of Alternatives <br />The nine alternatives considered in detail are described below, beginning <br />with the No Action Alternative (historical operations) to provide a baseline <br />for comparison. Figure 3 summarizes the alternatives and their <br />descriptions. <br />UNRESTRICTED FLUCTUATING FLOWS <br />No Action Maintain fluctuating releases and provide a baseline for impact <br />comparison <br />Maximum Power- Permit use of full powerplant capacity <br />plant Capacity <br />RESTRICTED FLUCTUATING FLOWS <br />High Slightly reduce daily fluctuations from historic no action levels <br />Moderate Moderately reduce daily fluctuations from historic no action levels; <br />includes habitat maintenance flows <br />Modified Low Substantially reduce daily fluctuations from historic no action levels; <br />(Preferred Alternative) includes habitat maintenance flows <br />Interim Low Substantially reduce daily fluctuations from historic no action levels; <br />same as interim operations <br />STEADY FLOWS <br />Existing Monthly Provide steady flows that use historic monthly release strategies <br />Volume <br />Seasonally Provide steady flows on a seasonal or monthly basis; includes <br />Adjusted habitat maintenance flows I <br />Year-Round Provide steady flows throughout the year <br />_ <br />Figure 3.-Glen Canyon Dam EIS alternatives. <br />8 Glen Canyon Dam EIS Summary