San Luis Dam
Encyclopedia
San Luis Dam is a dam
that creates San Luis Reservoir
, which serves as an off-stream reservoir for the California State Water Project
and the Central Valley Project
. It is also known as the B.F. Sisk Dam, after Bernie Sisk. The earth-fill gravity embankment dam
is 305 feet (93 m) tall and was completed in 1967. It is located between Los Banos, California
and Gilroy, California
along Pacheco Pass
. San Luis Reservoir is the largest off-stream reservoir in the United States, with a capacity of 2041000 acre.ft. San Luis Creek is a small stream that flows through the area and it is sometimes listed as the dam's watershed, even though it is an off-stream reservoir. The dam is owned by the U.S. Bureau of Reclamation, but is operated by the California Department of Water Resources
to store water for its State Water Project.
San Luis Reservoir and O'Neill Forebay serve as the upper and lower reservoirs for the William R. Gianelli pumped storage hydroelectric plant, which began operating in 1968. The plant's eight Francis turbine
s produce a combined 424 MW. The sale of peak electricity
lowers the overall cost of operating the State Water Project, particularly the California Aqueduct
. A short 230 kV
power line
heads eastward to deliver this electricity to Northern California
's electricity backbone, Path 15
.
The dam was dedicated by President John F. Kennedy
on August 18, 1962.
Dam
A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are...
that creates San Luis Reservoir
San Luis Reservoir
The San Luis Reservoir is an off-stream artificial lake in the eastern slopes of the Diablo Range of Merced County, California, approximately west of Los Banos on State Route 152, which crosses Pacheco Pass and runs along its north shore. The reservoir stores water taken from the San...
, which serves as an off-stream reservoir for the California State Water Project
California State Water Project
The California State Water Project, commonly known as the SWP , is the world's largest publicly built and operated water and power development and conveyance system. The SWP was designed and is operated by the California Department of Water Resources...
and the Central Valley Project
Central Valley Project
The Central Valley Project is a Bureau of Reclamation federal water project in the U.S. state of California. It was devised in 1933 in order to provide irrigation and municipal water to much of California's Central Valley—by regulating and storing water in reservoirs in the water-rich northern...
. It is also known as the B.F. Sisk Dam, after Bernie Sisk. The earth-fill gravity embankment dam
Embankment dam
An embankment dam is a massive artificial water barrier. It is typically created by the emplacement and compaction of a complex semi-plastic mound of various compositions of soil, sand, clay and/or rock. It has a semi-permanent waterproof natural covering for its surface, and a dense, waterproof...
is 305 feet (93 m) tall and was completed in 1967. It is located between Los Banos, California
Los Banos, California
Los Banos is a city in Merced County, California, near the junction of State Route 152 and Interstate 5. Los Banos is located southwest of Merced, at an elevation of 118 feet . The population was 35,972 at the 2010 census, up from 25,869 at the 2000 census...
and Gilroy, California
Gilroy, California
Gilroy is the southernmost city in Santa Clara County, California, United States. The population was 48,821 at the 2010 census. Gilroy is well-known for its garlic crop and for the annual Gilroy Garlic Festival, featuring various garlicky foods, including garlic ice cream. Gilroy also produces...
along Pacheco Pass
Pacheco Pass
Pacheco Pass, elevation , is a mountain pass located in the Diablo Range in southeastern Santa Clara County, California. It is the main road over the hills separating the Santa Clara Valley and the Central Valley....
. San Luis Reservoir is the largest off-stream reservoir in the United States, with a capacity of 2041000 acre.ft. San Luis Creek is a small stream that flows through the area and it is sometimes listed as the dam's watershed, even though it is an off-stream reservoir. The dam is owned by the U.S. Bureau of Reclamation, but is operated by the California Department of Water Resources
California Department of Water Resources
The California Department of Water Resources , is a department within the California Natural Resources Agency. The Department of Water Resources is responsible for the State of California's management and regulation of water usage...
to store water for its State Water Project.
San Luis Reservoir and O'Neill Forebay serve as the upper and lower reservoirs for the William R. Gianelli pumped storage hydroelectric plant, which began operating in 1968. The plant's eight Francis turbine
Francis turbine
The Francis turbine is a type of water turbine that was developed by James B. Francis in Lowell, Massachusetts. It is an inward-flow reaction turbine that combines radial and axial flow concepts....
s produce a combined 424 MW. The sale of peak electricity
Electricity
Electricity is a general term encompassing a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena, such as lightning, static electricity, and the flow of electrical current in an electrical wire...
lowers the overall cost of operating the State Water Project, particularly the California Aqueduct
California Aqueduct
The Governor Edmund G. Brown California Aqueduct is a system of canals, tunnels, and pipelines that conveys water collected from the Sierra Nevada Mountains and valleys of Northern- and Central California to Southern California. The Department of Water Resources operates and maintains the...
. A short 230 kV
Volt
The volt is the SI derived unit for electric potential, electric potential difference, and electromotive force. The volt is named in honor of the Italian physicist Alessandro Volta , who invented the voltaic pile, possibly the first chemical battery.- Definition :A single volt is defined as the...
power line
Electric power transmission
Electric-power transmission is the bulk transfer of electrical energy, from generating power plants to Electrical substations located near demand centers...
heads eastward to deliver this electricity to Northern California
Northern California
Northern California is the northern portion of the U.S. state of California. The San Francisco Bay Area , and Sacramento as well as its metropolitan area are the main population centers...
's electricity backbone, Path 15
Path 15
Path 15 is an portion of the north-south power transmission corridor in California, U.S. It forms a part of the Pacific AC Intertie and the California-Oregon Transmission Project....
.
The dam was dedicated by President John F. Kennedy
John F. Kennedy
John Fitzgerald "Jack" Kennedy , often referred to by his initials JFK, was the 35th President of the United States, serving from 1961 until his assassination in 1963....
on August 18, 1962.