The funds requested for fiscal year 1965 are needed for continuation of a coordinated construction program which will insure placing of the power units on the line as scheduled. Non-Federal costs.-Costs allocable to power, presently estimated $106,050,000, are reimbursable. at Status of local cooperation.-None required for construction. Responsibility for repayment of power costs rests with the marketing agency of the Department of the Interior. Comparison of Federal cost estimates.-The current Federal cost estimate of $107 million is a decrease of $5 million from the latest estimate of ($112 million) submitted to Congress. Lands and damages decreased $745,000 due to reduction of contingencies. Construction items decreased $3,685,000 due primarily to reduction in contingencies and analysis of future work requirements. Supervision and administration decreased $570,000 based on current experience and reduced construction costs. Summary construction program (PB-1), fiscal years 1964 and 1965 Location. FORT RANDALL DAM-LAKE FRANCIS CASE, S. Dak. (Continuing) On the Missouri River, 880 miles above the mouth, about 150 miles above Sioux City, Iowa, and 6 miles south of Lake Andes, S. Dak. Authorization.-1944 and 1960 Flood Control Acts. Benefit-cost ratio.-2.6 to 1. Spillway: Type: Concrete-lined chute with gated overflow weir. Initial and ultimate: 8 units at 40,000 kilowatts; 320,000 kilowatts. The project is being operated as a unit of the comprehensive plan for flood control, power, navigation, and other purposes in the Missouri River Basin. The comprehensive plan provides protection for the urban and rural areas in the Missouri Valley downstream from the dams from severe floods such as the great floods of 1844 and 1881, the record-breaking flood of 1952, numerous other floods in the first half of the 20th century and the many small floods originating upstream and occurring practically every year. Flood damages along the main stem of the Missouri River between Fort Randall Dam and the mouth amounted to about $550 million in the period from 1942 through 1953, inclusive. The project pro duces a large amount of hydroelectric power. Navigation on the Inland Water ways below Sioux City will benefit from release of its stored waters. The project will also provide recreation and fish and wildlife benefits. Fiscal year 1965.-The requested amount of $1,270,000 will be applied to: The funds requested for fiscal year 1965 are required to complete the PlatteWinner Bridge; continue reservoir access roads and recreation facilities; initiate centralization of powerhouse controls and miscellaneous work and raising of Gregory County roads; and continue engineering and design and supervision and administration. Non-Federal costs. In connection with the construction of the new PlatteWinner Bridge over the reservoir, local interests are required to pay all costs in excess of $4,500,000, construct all necessary approaches to the bridge site, and provide without cost to the United States all lands, easements, and rights-of-way necessary for construction of the bridge. These costs are estimated at $720,000. In addition, costs allocable to power, presently estimated at $126 million, are reimbursable. Status of local cooperation. A contract was negotiated on August 15, 1961, with the State of South Dakota for the design and construction of the PlatteWinner Bridge. The substructure is complete and the superstructure is under construction. Responsibility for repayment of power costs rests with the marketing agency of the Department of Interior, pursuant to Federal law. Comparison of Federal cost estimates.-The current Federal cost estimate of $195,600,000 is an increase of $700,000 over the latest estimate ($194,900,000) submitted to Congress. The powerplant estimate increased $255,200 mainly due to the provision for centralization of controls in the powerhouse. Additional requirements for reservoir access and recreation facilities increased the estimate $330,000. Engineering and design increased $125,000 based on a reanalysis of requirements. Minor adjustments in other items resulted in a decrease of $10,200. Summary construction program (PB-1), fiscal years 1964 and 1965 Location. Mile 1,072.3 Missouri River; in Hughes and Stanley Counties, S. Dak.; about 6 miles northwest of Pierre, S. Dak. Type: Gated with concrete control structure with unlined channel. Initial and ultimate: 7 units at 85,000 kilowatts; 595,000 kilowatts. JUSTIFICATION The reservoir will be operated as a unit in the plan for flood control; navigation, power, and other purposes in the Missouri River Basin. The comprehensive plan will protect Sioux City and Council Bluffs, Iowa; Omaha, Nebr.; and the Kansas Citys, Kans. and Mo.; as well as other urban and rural areas in the valley below the dams from severe floods such as those of 1844, 1881, 1903, 1909, 1915 1935, 1942, 1943, 1944, 1945, 1947, 1950, 1951, and the recordbreaking flood of 1952, and from smaller floods originating upstream and occurring practically every year. Flood damages along the main stem of the Missouri River between the damsite and the mouth, from 1942 through 1953, inclusive, amounted to approximately $550 million. The plan will provide flood protection to 1,875,000 acres of land subject to flooding between Fort Randall Dam and the mouth of the river. The Oahe Reservoir has one of the largest storage capacities of the proposed multiple-purpose reservoirs on the Missouri River. The capacity is sufficient to effect substantial reduction in flood discharges from the 59,600 square miles of drainage area between Oahe Dam and Garrison Dam. The Fort Randall spillway capacity was established with consideration of the protection by the Oahe Reservoir against major floods of unprecedented magnitude. Oahe provides the necessary_storage capacity for sediment which would otherwise be deposited in the Big Bend and Fort Randall Reservoirs to cause depletion of the limited storage available in those reservoirs and is essential to the full realization of the benefits from Big Bend, Fort Randall, and Gavins Point. The project will produce a large amount of hydroelectric power to supply a growing market in the adjacent area and navigation below Sioux City will greatly benefit from the release of its stored water. Irrigation water from the reservoir will be supplied to a distribution system serving irrigators primarily in eastern South Dakota. Additional important benefits will result from a greater degree of system flood control, other beneficial downstream uses, increased power generation at Fort Randall and Garrison due to reduction of flood control requirements at those projects, and fish and wildlife and recreational developments. Fiscal year 1965.-The requested amount of $4 million will be applied to: Continue acquisition of land in reservoir area_ Continue relocations. Continue service roads and surfacing Continue switchyard and accessory electrical equipment- Continue procurement of permanent operating equipment. 0. & M. during construction, construction facilities, and other distrib- Engineering and design.. $800,000 150, 000 Supervision and administration___ Total... The funds requested are required to maintain an orderly construction schedule. Non-Federal costs.-Costs allocable to power and irrigation are reimbursable. The reimbursement for power is presently estimated at $185,800,000. The reimbursement for irrigation is presently estimated at $67,400,000. Status of local cooperation.-None required for construction. Responsibility for repayment of irrigation and power costs rests with the Department of Interior pursuant to Federal laws. Comparison of Federal cost estimates.-The current Federal cost estimate of $340 million is a decrease of $5 million from the latest estimate ($345 million) submitted to Contress. Lands and damages increased $1,500,000 based on recent experience. Construction items decreased $5,500,000 due primarily to reduction in contingencies and future work requirements. Supervision and administration decreased $1 million based on current experience and reduced construction costs. |