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1 t 1 F 1 CHAPTER 2 - ALTERNATIVES ----------------------- -------------- -------------------------------- ------------------- 2.1 Alternative Descriptions 2.1.1 Assumptions Common to All Alternatives First, the contract with the CWCB to provide 5,000 of annually and 5,000 of in 4 out of 5 years for the 15 Mile Reach will remain in full force and effect under each of the alternatives. Second, none of the alternatives considered in detail contain measures that involve the Fryingpan-Arkansas Project yield, and none of these alternatives would impact the Fryingpan- Arkansas Project yield (i.e. water available for east slope diversions). Third, the Colorado River Water Conservation District's CRWCD Wolford Mountain Reservoir currently contributes up to 11,412 of to the 15 Mile Reach, which is composed of the west slope water users' 5,412 of as identified in the PBO and up to 6,000 of through a previous commitment that is continued in the PBO. The west slope water users' 5,412 of commitment does have shortage provisions, however, for the purposes of this analysis, if it is part of an alternative it was considered to be wholly available. The alternative descriptions following this section indicate whether the 5,412 of is included in a particular alternative. Fourth, 6,000 of of space in Wolford was made available to the Fish and Wildlife Service as part of the environmental permitting for the construction of that reservoir. The space fills using a portion of total inflow to the reservoir pro-rated amongst all the pools in the reservoir and the volume in those pools. The formulas for the fill proportions are set out in the reservoir's permit. Thus, depending upon inflow and the amounts in the other pools, the 6,000 of of space may or may not fill and be available to the Recovery Program in any one year. In the modeling for the 2012 Agreement, CRWCD provided Reclamation with an estimate of how much of the 6,000 of 1