DIVERSION DAM


The Boise River Diversion Dam, on the Boise River about 7 miles southeast of Boise, Idaho, is a rubble-concrete, weir-type structure with a hydraulic height of 39 feet. The dam diverts water into the New York Canal which serves distribution laterals and feeds Lake Lowell. A small canal known as the Penitentiary Canal, also originating at the diversion dam, distributes water on the north side of the Boise River to a small area of land east of Boise. The powerplant consists of three 500-kilowatt units that began operation in 1912.
Due to the deteriorated condition of the equipment and high operating costs resulting from full-attended operation, the powerplant was placed in ready reserve status in 1982. The plant was reconstructed from 2002 to 2004 and returned to service in June 2004. The nameplate rating for the plant was increased from the original 1500 kW to 3300 kW. The existing double turbine configuration was retained, but refurbished with new materials and technology. Modern generators were installed inside the original generator housings.






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Boise Project Board of Control  
2465 Overland Rd  
Boise, Idaho 83705-3155  
Tel: 208-344-1141  
Fax: 208-344-1437