![<span class="mw-page-title-main">Los Angeles Aqueduct</span> Water conveyance system in California, United States](https://upload.wikimedia.org/wikipedia/commons/thumb/3/32/Second_Los_Angeles_Aqueduct_Cascades%2C_Sylmar.jpg/320px-Second_Los_Angeles_Aqueduct_Cascades%2C_Sylmar.jpg)
The Los Angeles Aqueduct system, comprising the Los Angeles Aqueduct and the Second Los Angeles Aqueduct, is a water conveyance system, built and operated by the Los Angeles Department of Water and Power. The Owens Valley aqueduct was designed and built by the city's water department, at the time named The Bureau of Los Angeles Aqueduct, under the supervision of the department's Chief Engineer William Mulholland. The system delivers water from the Owens River in the Eastern Sierra Nevada Mountains to Los Angeles.
![<span class="mw-page-title-main">East Bay Municipal Utility District</span>](https://upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Ebmudheadquarters.jpg/320px-Ebmudheadquarters.jpg)
East Bay Municipal Utility District (EBMUD), colloquially referred to as "East Bay Mud", is a public utility district which provides water and sewage treatment services for an area of approximately 331 square miles (860 km2) in the eastern side of the San Francisco Bay. As of 2018, EBMUD provides drinking water for approximately 1.4 million people in portions of Alameda County and Contra Costa County in California, including the cities of Richmond, El Cerrito, Hercules, San Pablo, Pinole, Lafayette, Moraga, Orinda, Danville, Oakland, Piedmont, Emeryville, Berkeley, Albany, Alameda, San Leandro, neighboring unincorporated regions, and portions of cities such as Hayward and San Ramon. Sewage treatment services are provided for 685,000 people in an 88-square-mile area (as of 2018). EBMUD currently has an average annual growth rate of 0.8% and is projected to serve 1.6 million people by 2030. Headquartered in Oakland, EBMUD owns and maintains 2 water storage reservoirs on the Mokelumne River, 5 terminal reservoirs, 91 miles (146 km) of water transmission aqueducts, 4,100 miles (6,600 km) of water mains, 6 water treatment plants (WTPs), 29 miles (47 km) of wastewater interceptor sewer lines and a regional wastewater treatment facility (WWTF) rated at a maximum treatment capacity of 320 MGD.
![<span class="mw-page-title-main">Pyramid Lake (Los Angeles County, California)</span> Reservoir in Los Angeles County, California, United States](https://upload.wikimedia.org/wikipedia/commons/thumb/1/12/Pyramid_Lake_December_2014.jpg/320px-Pyramid_Lake_December_2014.jpg)
Pyramid Lake is a reservoir formed by Pyramid Dam on Piru Creek in the eastern San Emigdio Mountains, near Castaic, Southern California. It is a part of the West Branch California Aqueduct, which is a part of the California State Water Project. Its water is fed by the system after being pumped up from the San Joaquin Valley and through the Tehachapi Mountains.
![<span class="mw-page-title-main">Diamond Valley Lake</span> Reservoir in Riverside County, California, United States](https://upload.wikimedia.org/wikipedia/commons/thumb/2/24/DVLlake.JPG/320px-DVLlake.JPG)
Diamond Valley Lake is a man-made off-stream reservoir located near Hemet, California, United States. It is one of the largest reservoirs in Southern California and one of the newest. It has a capacity of 800,000 acre-feet (990,000,000 m3). The lake nearly doubled the area's surface water storage capacity and provides additional water supplies for drought, peak summer, and emergency needs.
![<span class="mw-page-title-main">Parker Dam</span> Colorado River dam between Arizona and California](https://upload.wikimedia.org/wikipedia/commons/thumb/1/18/Parker_Dam.jpg/320px-Parker_Dam.jpg)
Parker Dam is a concrete arch-gravity dam that crosses the Colorado River 155 miles (249 km) downstream of Hoover Dam. Built between 1934 and 1938 by the Bureau of Reclamation, it is 320 feet (98 m) high, 235 feet (72 m) of which are below the riverbed (the deep excavation was necessary in order to reach the bedrock on which the foundation of the dam was built), making it the deepest dam in the world. The portion of the dam above the foundation stands 85 feet (25.9 m) tall, making it the only dam in the world that stands more underground than above ground. The dam's primary functions are to create a reservoir, and to generate hydroelectric power. The reservoir behind the dam is called Lake Havasu and can store 647,000 acre⋅ft (798,000,000 m3; 2.11×1011 US gal; 1.76×1011 imp gal). The dam straddles the Arizona-California state border at the narrows the river passes through between the Whipple Mountains in San Bernardino County, California and the Buckskin Mountains in La Paz County, Arizona.
![<span class="mw-page-title-main">Metropolitan Water District of Southern California</span> Regional wholesaler of water in Southern California](https://upload.wikimedia.org/wikipedia/commons/thumb/c/cc/Metropolitan_Water_District_Seal.jpg/320px-Metropolitan_Water_District_Seal.jpg)
The Metropolitan Water District of Southern California is a regional wholesaler and the largest supplier of treated water in the United States. The name is usually shortened to "Met," "Metropolitan," or "MWD." It is a cooperative of fourteen cities, eleven municipal water districts, and one county water authority, that provides water to 19 million people in a 5,200-square-mile (13,000 km2) service area. It was created by an act of the California State Legislature in 1928, primarily to build and operate the Colorado River Aqueduct. Metropolitan became the first contractor to the State Water Project in 1960.
![<span class="mw-page-title-main">History of California (1900–present)</span> Overview of the history of California from 1900 to today](https://upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Bear_of_California.svg/320px-Bear_of_California.svg.png)
After 1900, California continued to grow rapidly and soon became an agricultural and industrial power. The economy was widely based on specialty agriculture, oil, tourism, shipping, film, and after 1940 advanced technology such as aerospace and electronics industries – along with a significant military presence. The films and stars of Hollywood helped make the state the "center" of worldwide attention. California became an American cultural phenomenon; the idea of the "California Dream" as a portion of the larger American Dream of finding a better life drew 35 million new residents from the start to the end of the 20th century (1900–2010). Silicon Valley became the world's center for computer innovation.
![<span class="mw-page-title-main">San Luis Dam</span> Dam in Merced County, California](https://upload.wikimedia.org/wikipedia/commons/thumb/9/9c/San_Luis_Reservoir_2018.jpg/320px-San_Luis_Reservoir_2018.jpg)
San Luis Dam is a major earth-filled dam in Merced County, California, which forms San Luis Reservoir, the largest off-stream reservoir in the United States. The dam and reservoir are located in the Diablo Range to the east of Pacheco Pass and about 10 miles (16 km) west of Los Banos. San Luis Dam, a jointly-owned state and federal facility, stores more than 2 million acre feet (2.5 km3) of water for the California State Water Project and the federal Central Valley Project. Although the dam is located in the valley of San Luis Creek, the majority of its water comes from man-made aqueducts which are supplied from other rivers in Northern California.
![<span class="mw-page-title-main">Lake Murray (California)</span> Reservoir in San Diego, California](https://upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Lake-Murray---San-Diego.jpg/320px-Lake-Murray---San-Diego.jpg)
Lake Murray is a reservoir in San Diego, California, operated by the City of San Diego's Public Utilities Department. Although thinly divided by a few housing communities and select roadways, it is technically considered to be part of the jurisdiction which makes up Mission Trails Regional Park. When full, the reservoir covers 171.1 acres (69.2 ha), has a maximum water depth of 95 feet (29 m), and a shoreline of 3.2 miles (5.1 km). The asphalt-paved service road lining roughly two-thirds of the lake's perimeter is a popular recreation site for the Navajo community as well as residents of the northernmost neighborhoods in La Mesa. It lies south of Cowles Mountain and a small golf course. It also functions as an important aeronautical reporting point for aircraft inbound to land at Montgomery-Gibbs Executive Airport.
![<span class="mw-page-title-main">California State Water Project</span> Flood control, energy production, and water conveyance infrastructure](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e5/California_State_Water_Project.png/320px-California_State_Water_Project.png)
The California State Water Project, commonly known as the SWP, is a state water management project in the U.S. state of California under the supervision of the California Department of Water Resources. The SWP is one of the largest public water and power utilities in the world, providing drinking water for more than 27 million people and generating an average of 6,500 GWh of hydroelectricity annually. However, as it is the largest single consumer of power in the state itself, it has a net usage of 5,100 GWh.
![<span class="mw-page-title-main">El Capitan Reservoir</span> Reservoir in San Diego County, California](https://upload.wikimedia.org/wikipedia/commons/thumb/5/57/El_Capitan_Reseviour_3.jpg/320px-El_Capitan_Reseviour_3.jpg)
El Capitan Reservoir is a reservoir in central San Diego County, California. It is in the Cuyamaca Mountains, about 30 miles (48 km) northeast of the city of San Diego and two miles northwest of the town of Alpine.
![<span class="mw-page-title-main">Briones Reservoir</span> Reservoir in Contra Costa County, California](https://upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Aerial_view_of_Briones_Reservoir_in_California.jpg/320px-Aerial_view_of_Briones_Reservoir_in_California.jpg)
Briones Reservoir is an open cut terminal water storage reservoir located in western Contra Costa County, in the East Bay region of the San Francisco Bay Area, California.
The Central Utah Project is a US federal water project that was authorized for construction under the Colorado River Storage Project Act of April 11, 1956, as a participating project. In general, the Central Utah Project develops a portion of Utah's share of the yield of the Colorado River, as set out in the Colorado River Compact of 1922.
![<span class="mw-page-title-main">Los Vaqueros Reservoir</span> Reservoir in Contra Costa County, California](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Los_Vaqueros_Reservoir_aerial.jpg/320px-Los_Vaqueros_Reservoir_aerial.jpg)
The Los Vaqueros Reservoir and watershed is located in the northern Diablo Range, within northeastern Contra Costa County, northern California. It was completed by the Contra Costa Water District (CCWD) in 1998 to improve the quality of drinking water for its 550,000 customers in Central and Eastern Contra Costa County. The reservoir is accessible via Vasco Road, a road which connects Brentwood and Livermore.
![<span class="mw-page-title-main">Lake Hodges</span> A reservoir in San Diego, California.](https://upload.wikimedia.org/wikipedia/commons/thumb/6/67/LakeHodgesI15ByPhilKonstantin.jpg/320px-LakeHodgesI15ByPhilKonstantin.jpg)
Lake Hodges is a lake and reservoir located within the city limits of San Diego, California. It is about 31 miles (50 km) north of Downtown San Diego, just north of the Rancho Bernardo community, and just south of the city's border with Escondido. When full, the reservoir has 1,234 acres (4.99 km2), a maximum water depth of 115 feet (35 m), and 27 miles (43 km) of shoreline. Lake Hodges has a total capacity of 30,251 acre-feet of water. Lake Hodges is owned by the city of San Diego, supplies water to the San Dieguito Water District and Santa Fe Irrigation District, and its mailing city address is Escondido.
![<span class="mw-page-title-main">San Vicente Reservoir</span> Reservoir in San Diego County, California](https://upload.wikimedia.org/wikipedia/commons/thumb/4/4b/SanVicenteReservoirByPhilKonstantin.jpg/320px-SanVicenteReservoirByPhilKonstantin.jpg)
San Vicente Reservoir is a reservoir created by the San Vicente Dam in San Diego County, California. It is located in the Cuyamaca Mountains, approximately 4.3 miles (6.9 km) north of Lakeside off California State Route 67.
![<span class="mw-page-title-main">Mokelumne Aqueduct</span> Bridge](https://upload.wikimedia.org/wikipedia/commons/thumb/7/75/Mokelumne-aqueduct.jpg/320px-Mokelumne-aqueduct.jpg)
The Mokelumne Aqueduct is a 95-mile (153 km) water conveyance system in central California, United States. The aqueduct is supplied by the Mokelumne River and provides water to 35 municipalities in the East Bay in the San Francisco Bay Area. The aqueduct and the associated dams, pipelines, treatment plants and hydroelectric system are owned and operated by the East Bay Municipal Utility District (EBMUD) and provide over 90 percent of the water used by the agency.
![<span class="mw-page-title-main">Barrett Dam</span> Dam in San Diego County, California](https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Barrett_Dam.jpg/320px-Barrett_Dam.jpg)
Barrett Dam is a concrete arch-gravity dam in southern San Diego County, California in the United States, forming Barrett Lake on Cottonwood Creek. The dam is part of the city of San Diego's local water supply system.
![<span class="mw-page-title-main">Lake Poway</span> Dam in Poway, California, US](https://upload.wikimedia.org/wikipedia/commons/thumb/b/b6/Lake_Poway.jpg/320px-Lake_Poway.jpg)
Lake Poway is a dam and reservoir in Poway, California, United States. The dam is owned by the City of Poway and was constructed between 1970 and 1972 with the purpose of storing and supplying water, and providing recreational facilities to the community. A $3.2-million bond issue for construction of the dam was rejected by voters in 1964 and 1966, but passed with 87 percent in favor in 1969. Year-round fishing for trout, bass, catfish, sunfish and bluegill is available at the lake.