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0033 '"'- ,...... . ~ ,..:- i'f i.,\ t i 2.5 The first-round water sales of 7,850 acre-feet included 1,850 acre-feet of augmented water sales for municipal and domestic uses and 6,000 acre-feet of augmented water sales for industrial use. The sales level of 7,850 acre- feet represents the maximum amount of water whi'ch would be sold from Ruedi Reservoir during an extremely dry year. Operatiional modeling conducted during this study indicated a maximum augmented sale of 7,200 acre-feet during the period of study 1948 to 1980. Figure 2.2 shows a graph typical of reservoir levels and instream flow in the Fryingpan River below Rocky Fork for dry, average and wet years. These correspond to years in the record to 1977, 1974 and 1957, respectively, A discussion of the impacts of ,the No Action Alternative is not presented like a normal impact evaluation because the No Action Alternative essentially constitutes the baseline against which all other alternatives are judged. The No Action Alternative has a maximum sales level of 7,200 acre-feet, and Ruedi Reservoir usually has over 100,000 acre-feet of: volume each year on September 1, and the drawdown during the summer averages only four feet. There is only a three percent chance that the reservoir will be below 85,000' acre-feet on September 1 of any year. " The No Action Alternative was not chosen as the preferred alternative for two reasons: one, the low level of sales is not in accordance with the Operating principles in that revenues are not being generated to repay construction costs; and two, present operations! do not meet the terms of the authorizing legislation requiring the water to ~e used for replacement pur- poses and other purposes. 2.1.2 Alternatives Considered in Detail in the Environmental Assessment Alternative 2. Municipal/lndustria~ Water Sales, Supplemental Supply' This alternative developed the maximum amo~nt of water which could be delivered by Ruedi Reservoir to augffient junior ~ater rights. The maximum level of water sales which could be achieved under this alternative was 74,300 acre-feet in a dry year. The level of sales in an average year would be 34,600 acre-feet. Sales of water from Ruedi Reservoir would occur primarily in late summer and early fall when flows in the,Colorado River are lowest. Alternative 2 was judged to have significa~t environmental impacts. Chief among them were nine months out of each average year when flow rates in the Fryingpan River would be more than 10 percent greater or less than current , , +