WSP12636 - Laserfiche WebLink

Home Browse Search

I I I I I I I I I I I I I I I I I I I 002553 constructed in 1941 as a diversion structure to provide irrigation water to the CRIT. A 3-unit, low-head powerplant was added to the structure in 1992. The water retained by the dam is named Lake Moovalya which extends upstream approximately 10 miles and contributes a stable water surface to the recreational area referred to as the Parker Strip. The dam raises the river water level approximately 15 feet but develops no useable storage. The water releases below Headgate Rock Dam mirror the releases from Parker Dam. The existing spillway capacity through all 7 gates is 140,000 cfs. The maximum powerplant discharge is 20,000 cfs. The maximum generating capacity of the powerplant is 19.5 MW. Palo Verde Diversion Dam - The Palo Verde Diversion Dam consists of a concrete, gated structure with an adjacent embankment. It was constructed by Reclamation in 1956 and 1957, as a permanent replacement for the old Palo Verde rock weir. The dam raises the water levels approximately 12 feet, which is sufficient for the gravity flow to provide the water supply to the Palo Verde Valley including the city of Blythe. The dam has no useable storage even though the backwater from the dam reflects approximately 15 miles upstream. The dam is operated. and maintained by the PVID. . Senator Wash Pumping/Generating Plant and Regulating Reservoir - Senator Wash is a pumped, offstream storage facility located approximately 2 miles upstream from Imperial Dam. It was constructed to supplement limited storage behind Imperial Dam and Laguna Dam. When sufficient storage is not available at Imperial and Laguna Dams, Senator Wash is used to regulate excess flows arriving at Imperial Dam to prevent over deliveries to Mexico, and to ensure demands can be met when flows arriving at Imperial Dam are less than water user demand. Construction of Senator Wash began in 1964, with operation beginning January 30, 1966. The reservoir has a capacity of 13,836 acre-feet at elevation 251 feet msl. Senator Wash water surface elevation varies between 210 feet and 240 feet (current reservoir restrictions prevent raising the reservoir to elevation 251 feet due to concerns with seepage and high hydraulic pressure under the toe of Senator Wash Dam and along Squaw Lake Dike). The reservoir elevation fluctuates according to water user demand and flows arriving at Imperial Dam. Glen Canyon Dam - Glen Canyon Dam, which formed Lake Powell, was completed in 1963 as a principle part of the Colorado River Storage Project. It is a concrete, arch dam 710 feet high and 1,560 feet wide. The maximum generating discharge capacity is 33,200 cfs which may be augmented by an additional 15,000 cfs through the river outlet works. The active capacity of Lake Powell is 20,876,000 acre-feet. Lake Powell has no legislated flood control space. The required system flood control space is allocated among selected project reservoirs including Lake Powell, to augment the 1.5 maf required to be available in Lake Mead. Appendix D - 4