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003249 for feasibility study authorization. Some measures with separate imple- mentation potential will be reported on in fiscal year 1982. A final report is scheduled for fiscal year 1983. Lower Colorado River Water Conservation and Efficient Use Program. The purpose of this special investigation is to examine potential water con- servation measures and develop efficient use programs along the main stream of the Colorado River between the Grand Canyon and t,e Mexican boundary. A number of individual elements have been identified for study: (1) conservation of Gila River floodflows; (2) urban water conservation; (3) irrigation water conservation; (4) vegetation management; (5) water banking; (6) evaporation reduction at Lake Mead; (7) legal and insti- tutional implications; and (8) interrelationship with water quality. Reports will be prepared on separate study elements with the initial report on conservation of Gila River floodflows scheduled for completion in fiscal year 1982. Works for Others Headgate Rock Hydroelectric Project. Headgate Rock Dam is the diversion structure for Colorado River Indian Reservation irrigation and is located on the Colorado River 14 miles downstream from Parker Dam. This low-head hydroelectric project would develop 19.5 MW of new generation. Three 6,500-kW tube-turbine generating units would produce an average of 86,511,000 kWh annually to replace Arizona Public Service power being used on the reservation. Construction funds appropriated for the Bureau of Indian Affairs in fiscal years 1980 and 1981 were sufficient for Reclamation to complete the specification designs . rne environmental "Finding of No Significant Impact" has been approved. The Fish and Wildlife Service Coordination Act Report was completed in April 1981. A lterna ti ve approaches for conti nui ng deve I opment are bei ng cons i dered. Funding is not currently identified in the fiscal year 1982 budget. Yellowhouse Dam and Reservoir, Zuni Project, New Mexico~ The Bureau of Indian Affairs requested the Bureau of Reclamation to prepare a feasi- bi 1 ity report on the Yellowhouse Dam and Reservoi r located on the Zuni Indian Reservation in order to correct dam safety and flood control deficiencies as identified in the Reclamation report dated January 1969. Reclamation has completed the investigations and has prepared a draft feasibility report which is under review by the Bureau of Indian Affairs and the Zuni Tri ba 1 Counci 1 . Investigations in Progress--Advance Planning Las Vegas Wash Unit. A bypass pipeline verification program to convey low salinity industrial cooling water past an area of highly saline soil, curtailing ground-water infiltration and salt pickup, is being 3