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New construction for the unit would consi~t of the potential Narrows Dam and Reservoir to serve the functions of irrigation, flood control, recreation, and fish-wildlife enhancement. The fish hatchery would be located approximately 1,000 feet downstream from the dam. Specific lands and facilities, including the existing Jackson Lake, would be acquired for recreation and fish and wildlife purposes. No Federal construction of irrigation distribution facilities would be involved. . Storage water would be released as necessary from the reservoir to supplement irrigation within the l66,370-acre service area of the Lower South Platte Water Conservancy District. Project Water stored in Narrows Reservoir would be released either into the South Platte River through a river outlet for delivery to existing downstream diversion works or through a canal outlet works directly into the Fort Morgan Canal. Minimum down- stream flows for fishery requirements would be met by reservoir seepage, stream accretions, and return flows. Flows for operating the fish hatchery would be obtained from seepage. . COSTS AND CONSTRUCTION Project Costs The total project cost of the Narrows Unit, based on January 1969 prices, is estimated at $68,050,000 which is an increase of $6,230,000 from the earlier estimate based on October 1965 price levels. This increased cost reflects rising construction and rights-of-way costs and the cost of the added fish hatchery. The comparative project costs are as follows: Item Dam'and reservoir including general property Fish hatchery Fish and wildlife management area Recreation development, initial Jackson Lake rehabilitation (dual recreation & fish and wildlife) Subtotal - initial development Future recreation faci1ities--undiscounted Total project cost 2 , H.D. 320 $57,110,000 o 2,265,000 1,180,000 125,000 60,680,000 1,140,000 $61,820,000 Present $61,825,000 815,000 2,635,000 2,415,000 125,000 67,815,500 235,000 $68,050,000