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Let us now turn to an examination of the terms of the agreement. First of all, the plaintiffs withdrew their objections to the Corps of Engineers 404 Permit and the REA loan guarantee and agreed not to challenge the adequacy of the revised Environmental Impact Statement then in preparation. Second, the agreement established a limitation on consumptive use of water at the power plant of 23 250 acre ft/yr. Third, MBPP agreed to operate the reservoir so as to deliver certain minimum streamflows at the mouth of the Laramie. These minimum streamflow requirements are given in Table V. Fourth, a trust fund dedicated to the preservation of the Platte River Whooping Crane Habitat Main- tenance Trust was established with $7.5 million from MBPP. Fifth, Basin Elec- tric and the other power companies involved agreed to lobby the Wyoming State Legislature for an amendment to state water laws that would make it more dif- ficult to transfer water rights or change the point of diversion. Finally, it was stipulated that the agreement would take effect only if the Grayrocks Dam and Reservoir were granted an exemption from the Endangered Species Act by the newly created Endangered Species Committee. Effects of the Agreement on the Flow Qf the Laramie Two parts of the agreement--the maximum power plant consumption and the minimum flow requirements of Table V--directly affect the flow of water at the mouth of the Laramie. In this section we attempt a quantification of these effects by simulating the operation of the Grayrocks Reservoir with and without the agreement. The incoming flows for this simulation were provided by the historical record of average monthly flows for 1927 to 1978 as reported by the United States Geological Survey. In other words, this simulation estimates the effects of the dam and power plant on the Laramie under flow conditions that exactly duplicate the historical record. The "without agreement" simulation assmnes tht the MBPP had been completed according to the original plan. Under this scheme, the average net depletions would be about 45 000 acre-ft/yr: about 14 000 in power plant consumption, 9000 1n reservoir evaporation (for a full reservoir), and 22 500 net consmnp- tion by the Corn Creek Irrigation Project. Return flows from Corn Creek would deliver perhaps 7500 acre-ft/yr into the North Platte, assuming a net consump- tion of 1.0 acre-ft/ acre. This is about what was reported by the Special Master in Nebraska v. Wyoming. If the conveyance loss rate were 0.16% per mile, the operation "without agreement" of Grayrocks Dam would reduce the flow in the Platte at Overton, Nebraska, by an average of 2.5%. 48