Castaic Dam is a dam located on Castaic Creek and forms Castaic Lake. It is an earth-fill dam, though its surfaces are covered with boulders and cobble-sized rocks to prevent erosion. It is near the city of Castaic, California. However, Castaic Creek provides little of its water. The lake is the terminus of the West Branch of the California Aqueduct, part of the State Water Project. The dam was built by the California Department of Water Resources and construction was completed in 1973. The lake has a capacity of 325,000 acre-feet and stores drinking water for the western portion of the Greater Los Angeles Area. Scrivener Dam, Canberra Australia, was engineered to withstand a once-in-5000-years flood event A dam is a barrier across flowing water that obstructs, directs or retards the flow, often creating a reservoir, lake or impoundment. ... This article is about the large rocks known as boulders. ... Cobble is a geologic term for a rock or rock fragment with a grain size with dimensions between 64–256 mm (2. ... Look up Erosion on Wiktionary, the free dictionary Severe soil erosion in a wheat field near Washington State University, USA. Erosion is the displacement of solids (soil, mud, rock, and so forth) by the agents of wind, water, ice, movement in response to gravity, or living organisms (in the case... Castaic, California (2000 Census population 22,173 in the 91384 ZIP Code) is a Los Angeles County, USA unincorporated community north of Santa Clarita in Castaic Canyon a few miles north of the Santa Clarita Valley and Six Flags Magic Mountain amusement park. ... The California Aqueduct is the concrete-lined aqueduct that transports water from Northern California to Southern California. ... The California Department of Water Resources is responsible for the management of water resources in California. ... An acre foot is a unit of volume commonly used in the United States in reference to large-scale water resources, such as reservoirs, aqueducts, canals, and river flows. ... Jump to: navigation, search Drinking water is water that is intended to be drunk by humans. ... Los Angeles, Orange, Ventura, Riverside and San Bernardino counties in Southern California The Greater Los Angeles Area is the agglomeration around the city of Los Angeles, California. ...

The 11-MW Foothill Feeder hydroelectric power plant is located at the base of the dam and generates electricity when water is needed in Los Angeles. The 1,495-MW Castaic pumped-storage hydroelectric power plant is located other end of the lake. Castaic Lake serves as the lower reservoir, while Pyramid Lake serves as the upper. When demand for electricity is high, usually during the afternoon, water is withdrawn from Pyramid Lake and released into Castaic Lake. At night, when demand is low, water is pumped back into Pyramid Lake. The sale of peak electricity reduces the Department of Water Resources' overall electric costs for operating the California Aqueduct. Hydroelectric dam diagram The waters of Llyn Stwlan, the upper reservoir of the Ffestiniog Pumped-Storage Scheme in north Wales, can just be glimpsed on the right. ... A power station (also power plant) is a facility for the generation of electric power. ... Jump to: navigation, search Electricity is a general term applied to phenomena involving a fundamental property of matter called an electric charge. ... This article is about the largest city in California. ... Diagram of the TVA pumped storage facility at Racoon Mountain Pumped storage hydroelectricity is a method of storing and producing electricity to supply high peak demands by moving water between reservoirs at different elevations. ... Pyramid Dam with Pyramid Lake is a part of the California Aqueduct, as is its neighboring Castaic Lake and dam which lies seven miles (10 km) south. ...