List of reservoirs and dams in California
Encyclopedia
Dams and reservoirs in California in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, in alphabetical order of the reservoir's name.
Height1 Volume
Reservoir Dam River County Owner Completed Type (ft) (m) (acre ft) (1,000 m³)
Almaden Reservoir
Almaden Reservoir
Almaden Reservoir is an artificial lake in the hills south of San Jose, California, U.S.A.. It borders on Almaden Quicksilver County Park.The lake is formed by Almaden Dam, built in 1936 across Los Alamitos Creek. and its waters reach the San Francisco Bay by way of the Guadalupe River.- Almaden...

 
Almaden Dam  Alamitos Creek  Santa Clara
Santa Clara County, California
Santa Clara County is a county located at the southern end of the San Francisco Bay Area in the U.S. state of California. As of 2010 it had a population of 1,781,642. The county seat is San Jose. The highly urbanized Santa Clara Valley within Santa Clara County is also known as Silicon Valley...

 
Santa Clara Valley Water District
Santa Clara Valley Water District
The Santa Clara Valley Water District provides stream stewardship, wholesale water supply and flood protection for Santa Clara County, California, in the southern San Francisco Bay Area. The district encompasses all of the county’s and serves the area’s 15 cities, 1.7 million residents and more...

 
1935 Earth  108 33 1,586 1,956
Lake Amador
Lake Amador
Lake Amador is a reservoir located in Amador County, California. It lies at an elevation of 325 feet.The lake's water is impounded by the Jackson Creek Dam, a tall earth-and-rock dam, built in 1965 across Jackson Creek. The dam is long and wide and contains of material. Its crest is about...

 
Jackson Creek Dam  Jackson Creek
Jackson Creek
Jackson Creek is a stream in Amador County, California, which feeds into Dry Creek southwest of Ione. It was linked to gold mining during the California Gold Rush era....

 
Amador
Amador County, California
Amador County is a county located in the Sierra Nevada of the U.S. state of California. As of the 2010 census, the population was 38,091. The county seat is Jackson.Amador County bills itself as "The Heart of the Mother Lode" and lies within the Gold Country...

 
Jackson Valley Irrigation District  1965 Earth and rock
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...

 
193 59 22,000 27,000
Anderson Reservoir
Anderson Reservoir
Anderson Reservoir is a man-made lake along Coyote Creek in Santa Clara County, California, near Morgan Hill. Anderson Dam was built in 1950 to provide drinking water for Santa Clara county; the lake has also become a source of recreation to nearby residents. Anderson Reservoir is the largest...

 
Leroy Anderson Dam Coyote Creek
Coyote Creek
Coyote Creek is a river that flows through the Santa Clara Valley in California, United States.-History:Coyote Creek was originally named Arroyo del Coyote by Padre Pedro Font when the de Anza Expedition reached it on Sunday, March 31, 1776....

 
Santa Clara
Santa Clara County, California
Santa Clara County is a county located at the southern end of the San Francisco Bay Area in the U.S. state of California. As of 2010 it had a population of 1,781,642. The county seat is San Jose. The highly urbanized Santa Clara Valley within Santa Clara County is also known as Silicon Valley...

 
Santa Clara Valley Water District
Santa Clara Valley Water District
The Santa Clara Valley Water District provides stream stewardship, wholesale water supply and flood protection for Santa Clara County, California, in the southern San Francisco Bay Area. The district encompasses all of the county’s and serves the area’s 15 cities, 1.7 million residents and more...

 
1950 Earth  235 72 91,280 112,590
Antelope Lake  Antelope Dam Upper Indian Creek  Plumas
Plumas County, California
Plumas County is a county located in the Sierra Nevada of the U.S. state of California. The county gets its name from the Spanish words for the Feather River , which flows through the county. As of the 2010 census, the population 20,007, down from 20,824 at the 2000 census...

 
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...

 
1965 Earth  120 37 22,566 639
Bear River Reservoir  Bear River Dam Bear River
Bear River (Mokelumne River tributary)
The Bear River is a river in the Sierra Nevada in California. It is a tributary of the Mokelumne River. The river and its watershed are entirely in El Dorado National Forest. The river begins as two forks several miles south of Kirkwood. The forks travel roughly southwest and merge just before the...

 
Amador
Amador County, California
Amador County is a county located in the Sierra Nevada of the U.S. state of California. As of the 2010 census, the population was 38,091. The county seat is Jackson.Amador County bills itself as "The Heart of the Mother Lode" and lies within the Gold Country...

 
Pacific Gas and Electric  1900 Rock  83 25 56000 1586
Beardsley Lake  Beardsley Dam Stanislaus River
Stanislaus River
The Stanislaus River in California is one of the largest tributaries of the San Joaquin River. The river is long and has north, middle and south forks...

, Middle Fork
Tuolumne
Tuolumne County, California
Tuolumne County is a county in the Sierra Nevada of the U.S. state of California. The northern half of Yosemite National Park is located in the eastern part of the county. As of the 2010 census, the population was 55,365, up from 54,501 at the 2000 census...

 
Oakdale & South San Joaquin Irrigation Districts  1957 Earth and rock  278 85 70,600 87,000
Big Bear Lake
Big Bear Lake
Big Bear Lake is a reservoir in the San Bernardino Mountains, in San Bernardino County, California, United States. At a surface elevation of , it has an east-west length of approximately 7 miles and is approximately 2.5 miles at its widest measurement, though the lake's width mostly averages a...

 
Big Bear Dam  Bear Creek  San Bernardino
San Bernardino County, California
San Bernardino County is a county in the U.S. state of California. As of the 2010 census, the population was 2,035,210, up from 1,709,434 as of the 2000 census...

 
Big Bear Municipal Water District  1912 Variable radius arch  72 22 73,000 90,000
Big Tujunga Reservoir  Big Tujunga Dam
Big Tujunga Dam
Big Tujunga Dam is a concrete arch dam in Los Angeles County, California, spanning Big Tujunga Creek northeast of Sunland. Completed in 1931 by the Los Angeles Department of Water and Power, it serves mainly for flood control. The dam was originally planned as one of several similar flood-control...

 
Big Tujunga Creek
Big Tujunga Creek
Big Tujunga Creek is a major stream in Los Angeles County in the U.S. state of California. From its headwaters high in the San Gabriel Mountains, it flows generally southwest for , joining Little Tujunga Creek to form the Tujunga Wash near Pacoima...

 
Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
Los Angeles County Department of Public Works
Los Angeles County Department of Public Works
The Los Angeles County Department of Public Works is responsible for the construction and operation of Los Angeles County's roads, building safety, sewerage, and flood control...

 
1931 Variable radius arch  208 63 5,750 7,090
Black Butte Reservoir  Black Butte Dam  Stony Creek  Tehama
Tehama County, California
Tehama County is a county located in the northern part of the U.S. state of California. It is bisected by the Sacramento River. As of 2010 its population was 63,463, up from 56,039 as of 2000. The county seat is Red Bluff.-History:...

 
U.S. Army Corps of Engineers  1963 Earth  156 48 143,700 177,300
Boca Reservoir
Boca Reservoir
Boca Reservoir is an artificial lake in the Tahoe National Forest of Nevada County, California, created by the construction of Boca Dam across Little Truckee River, approximately 10 km northeast of Truckee.-External links:...

 
Boca Dam
Boca Dam
Boca Dam is an earthfill dam and a part of the Truckee Storage Project that encompasses Nevada County, California and Washoe County, Nevada in the United States...

 
Little Truckee River
Little Truckee River
The Little Truckee River is a river that is a tributary to its larger counterpart, the Truckee River, located in Nevada County in eastern California.-Description:...

 
Nevada
Nevada County, California
Nevada County is a county located in the Sierra Nevada of California, in the Mother Lode country. As of 2010 its population was 98,764. The county seat is Nevada City.-History:Nevada County was created in 1851 from parts of Yuba County....

 
Washoe County Water Conservancy District  1937 Earth  ? ? ? ?
Bouquet Reservoir
Bouquet Reservoir
Bouquet Reservoir is an artificial lake in the Angeles National Forest of Los Angeles County, California about from Palmdale.At elevation of in the Sierra Pelona Mountains, the reservoir capacity is and is formed by Bouquet Canyon Dam on Bouquet Creek, which is a tributary of the Santa Clara River...

 
Bouquet Canyon Dam  Bouquet Creek  Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
Los Angeles Department of Water and Power
Los Angeles Department of Water and Power
The Los Angeles Department of Water and Power is the largest municipal utility in the United States, serving over four million residents. It was founded in 1902 to supply water and electricity to residents and businesses in Los Angeles and surrounding communities...

 
1934 Earth  190 58 36,505 45,028
Brea Reservoir  Brea Dam  Brea Creek
Brea Creek
Brea Creek is one of four principal tributaries of Coyote Creek, which is a lower tributary of the San Gabriel River. It drains parts of Orange, Riverside and San Bernardino counties in the southern part of the U.S. state of California...

 
Orange
Orange County, California
Orange County is a county in the U.S. state of California. Its county seat is Santa Ana. As of the 2010 census, its population was 3,010,232, up from 2,846,293 at the 2000 census, making it the third most populous county in California, behind Los Angeles County and San Diego County...

 
U.S. Army Corps of Engineers  1942 Earth  87 27 4,009 4945
Briones Lake  Briones Dam Bear Creek  Contra Costa
Contra Costa County, California
Contra Costa County is a primarily suburban county in the San Francisco Bay Area of the U.S. state of California. As of the 2010 census, it had a population of 1,049,025...

 
East Bay Municipal Utility District
East Bay Municipal Utility District
East Bay Municipal Utility District , colloquially referred to as "East Bay Mud", provides water and sewage treatment for customers in portions of Alameda County and Contra Costa County in California, on the eastern side of San Francisco Bay, including the cities of Richmond, El Cerrito, Hercules,...

 
1956 Earth  273 83 67,520 83,280
Brush Creek Reservoir  Brush Creek Dam  Brush Creek  El Dorado
El Dorado County, California
El Dorado County is a county located in the historic Gold Country in the Sierra Nevada Mountains and foothills of the U.S. state of California. The 2010 population was 181,058. The El Dorado county seat is in Placerville....

 
Sacramento Municipal Utility District  1970 Variable radius arch  213 65 1,530 1,890
Bucks Lake  Bucks Dam  Bucks Creek  Plumas
Plumas County, California
Plumas County is a county located in the Sierra Nevada of the U.S. state of California. The county gets its name from the Spanish words for the Feather River , which flows through the county. As of the 2010 census, the population 20,007, down from 20,824 at the 2000 census...

 
Pacific Gas and Electric  1928 Rock-fill  122 37 103,000 127,000
Buena Vista Lake  Buena Vista Dam  Off-stream
Off-stream
Off-stream refers to a water body or system that is not located in a streambed or does not receive significant natural flows from the surrounding watershed. For example, instead of moving water between lakes, an offstream pumped-storage hydroelectric system could use two large tanks of water...

 
Kern
Kern County, California
Spreading across the southern end of the California Central Valley, Kern County is the fifth-largest county by population in California. Its economy is heavily linked to agriculture and to petroleum extraction, and there is a strong aviation and space presence. Politically, it has generally...

 
J. Boswell & Tenneco West  1890 Earth  20 6 205,000 253,000
Calaveras Reservoir
Calaveras Reservoir
Calaveras Reservoir is a lake located primarily in Santa Clara County, California with a small portion and its dam in Alameda County, California. The reservoir has a capacity of . In Spanish, Calaveras means "skulls."...

 
Calaveras Dam  Calaveras Creek
Calaveras Creek
Calaveras Creek is a waterway that starts near Martinez, Texas and runs for fifteen miles to its mouth at the San Antonio River. It is the source of Calaveras Lake where it is dammed near Elmendorf. Calaveras means skulls in Spanish....

 
Alameda
Alameda County, California
Alameda County is a county in the U.S. state of California. It occupies most of the East Bay region of the San Francisco Bay Area. As of the 2010 census it had a population of 1,510,271, making it the 7th most populous county in the state...

 
City and County of San Francisco
San Francisco, California
San Francisco , officially the City and County of San Francisco, is the financial, cultural, and transportation center of the San Francisco Bay Area, a region of 7.15 million people which includes San Jose and Oakland...

1925 Hydraulic fill
Hydraulic fill
A hydraulic fill is an embankment or other fill in which the materials are deposited in place by a flowing stream of water, with the deposition being selective...

 
210 64 100,000 123,000
Calero Reservoir
Calero Reservoir
Calero Reservoir is an artificial lake in the Santa Teresa Hills south of San Jose, California, U.S.A..The lake is formed by Calero Dam, built in 1935 across Calero Creek. Its waters reach the San Francisco Bay by way of Los Alamitos Creek and the Guadalupe River.- Calero Dam :Calero Dam is an...

 
Calero Dam Calero Creek  Santa Clara
Santa Clara County, California
Santa Clara County is a county located at the southern end of the San Francisco Bay Area in the U.S. state of California. As of 2010 it had a population of 1,781,642. The county seat is San Jose. The highly urbanized Santa Clara Valley within Santa Clara County is also known as Silicon Valley...

 
Santa Clara Valley Water District
Santa Clara Valley Water District
The Santa Clara Valley Water District provides stream stewardship, wholesale water supply and flood protection for Santa Clara County, California, in the southern San Francisco Bay Area. The district encompasses all of the county’s and serves the area’s 15 cities, 1.7 million residents and more...

 
1935 Earth  98 30 10,050 12,400
Camanche Reservoir  Camanche Dam
Camanche Dam
Camanche Dam is a dam on the Mokelumne River in central California, about east of Lodi. The dam lies in the Sierra Nevada foothills in San Joaquin County and forms Camanche Lake, which serves mainly for flood control. It also has a power station capable of generating 10.7 megawatts....

 
Mokelumne River
Mokelumne River
The Mokelumne River is a river in Northern California. The Upper Mokelumne River originates in the Sierra Nevada mountain range and flows into Pardee Reservoir and then Camanche Reservoir in the Sierra foothills. The Lower Mokelumne River refers to the portion of the river below Camanche Dam...

 
San Joaquin
San Joaquin County, California
San Joaquin County is a county located in Central Valley of the U.S. state of California, just east of the San Francisco Bay Area. As of the 2010 census, the population was 685,306. The county seat is Stockton.-History:...

 and Calaveras
Calaveras County, California
Calaveras County is a county located in the Gold Country of the U.S. state of California. Calaveras is the Spanish word for skulls; the county was reportedly named for the remains of Native Americans discovered by the Spanish explorer Captain Gabriel Moraga. As of the 2010 census, the county had a...

 
East Bay Municipal Utility District
East Bay Municipal Utility District
East Bay Municipal Utility District , colloquially referred to as "East Bay Mud", provides water and sewage treatment for customers in portions of Alameda County and Contra Costa County in California, on the eastern side of San Francisco Bay, including the cities of Richmond, El Cerrito, Hercules,...

 
1963 Earth  171 52 417,120 514,510
Camp Far West Reservoir
Camp Far West Reservoir
Camp Far West Reservoir is a medium-sized lake in the foothills of Northern California located approximately 8 miles east of Wheatland, California. The lake is formed by Camp Far West Dam, which holds back the waters of the Bear River and Rock Creek, near what was formerly the confluence of the...

 
Camp Far West Dam  Bear River
Bear River (Feather River tributary)
The Bear River is a tributary of the Feather River in the Sierra Nevada, winding through four California counties: Yuba, Sutter, Placer, and Nevada....

 
Yuba
Yuba County, California
Yuba County is a county located in the U.S. state of California's Central Valley, north of Sacramento, along the Feather River. As of the 2010 census, its population was 72,155. The county seat is Marysville. Yuba County is part of the Greater Sacramento area.-History:Yuba County was one of the...

 
South Sutter Water District  1963 Earth and rock  185 56 104,500 128,900
Canyon Lake
Canyon Lake, California
Canyon Lake is a gated community in Riverside County, California, United States. One of only five gated cities in California, Canyon Lake began as a master-planned community developed by Corona Land Company in 1968. The “City of Canyon Lake” was incorporated on December 1, 1990. It geographically...

 
Railroad Canyon Dam  San Jacinto River
San Jacinto River (California)
The San Jacinto River is a river in Riverside County, California. The river's headwaters are in San Bernardino National Forest, but the lower portion of the watershed is urban and agricultural land....

 
Riverside
Riverside County, California
Riverside County is a county in the U.S. state of California. One of 58 California counties, it covers in the southern part of the state, and stretches from Orange County to the Colorado River, which forms the state border with Arizona. The county derives its name from the city of Riverside,...

 
Elsinore Valley Municipal Water District  1928 Variable radius arch  94 29 11,900 14,600
Carbon Canyon Reservoir  Carbon Canyon Dam
Carbon Canyon Dam
Carbon Canyon Dam is a dam at the northern edge of Orange County, California. The dam is approximately east of the city of Brea and approximately north of the city of Santa Ana . The drainage area above the dam is and is encompassed entirely within the Puente and Chino Hills...

 
Carbon Canyon Creek  Orange
Orange County, California
Orange County is a county in the U.S. state of California. Its county seat is Santa Ana. As of the 2010 census, its population was 3,010,232, up from 2,846,293 at the 2000 census, making it the third most populous county in California, behind Los Angeles County and San Diego County...

 
U.S. Army Corps of Engineers  1961 Earth  99 30 6,615 8,160
Castaic Lake
Castaic Lake
Castaic Lake is an artificial lake on Castaic Creek formed by Castaic Dam, in northwestern Los Angeles County, California, near the town of Castaic. The lake with a surface elevation of approximately above sea level is the terminus of the West Branch of the California Aqueduct, though some comes...

 
Castaic Dam
Castaic Dam
Castaic Dam is a dam near the city of Castaic, California. It is an earth-fill dam, though its surfaces are covered with boulders and cobble-sized rocks to prevent erosion. Although located on Castaic Creek and forming Castaic Lake, Castaic Creek provides little of its water. The lake is the...

 
Castaic Creek
Castaic Creek
Castaic Creek is a stream in northern Los Angeles County, California. It is a tributary of the Santa Clara River.-Castaic Lake:Castaic Dam on the creek forms Castaic Lake, but most of the water comes from the West Branch of the California Aqueduct, also called the State Water Project. The lake is...

 
Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
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...

 
1973 Earth  340 104 323,700 399,300
Cedar Lake
Cedar Lake (California)
Cedar Lake is a small artificial lake in the San Bernardino Mountains of California, U.S.A. which has appeared in dozens of Western films. It is the centerpiece of Cedar Lake Camp, a private retreat center owned and operated by the First Congregational Church of Los Angeles.Located south of the...

 
Cedar Lake Dam  Talmadge Creek
Talmadge Creek
Talmadge Creek is a tributary of the Kalamazoo River. It is located in Calhoun County, Michigan, near the county seat of Marshall.-2010 crude oil spill:...

 
San Bernardino
San Bernardino County, California
San Bernardino County is a county in the U.S. state of California. As of the 2010 census, the population was 2,035,210, up from 1,709,434 as of the 2000 census...

 
First Congregational Church of Los Angeles  1928 Arch dam
Arch dam
An arch dam is a type of dam that is curved and commonly built with concrete. The arch dam is a structure that is designed to curve upstream so that the force of the water against it, known as hydrostatic pressure, presses against the arch, compressing and strengthening the structure as it pushes...

 
28 8.5 30 37
Cherry Lake
Cherry Lake
Cherry Lake is an artificial lake in the Stanislaus National Forest of Tuolumne County, California about east of the city of Sonora. It is at an elevation of on the western side of the Sierra Nevada, and lies just outside the western boundary of Yosemite National Park...

 
Cherry Valley Dam  Cherry Creek  Tuolumne
Tuolumne County, California
Tuolumne County is a county in the Sierra Nevada of the U.S. state of California. The northern half of Yosemite National Park is located in the eastern part of the county. As of the 2010 census, the population was 55,365, up from 54,501 at the 2000 census...

 
City and County of San Francisco
San Francisco, California
San Francisco , officially the City and County of San Francisco, is the financial, cultural, and transportation center of the San Francisco Bay Area, a region of 7.15 million people which includes San Jose and Oakland...

 
1956 Earth and rock 315 96 273,500 337,400
Chesbro Reservoir
Chesbro Reservoir
Chesbro Reservoir is located on Llagas Creek, three miles west of Morgan Hill, California, United States. The reservoir can store 7,945 acre-feet of water, and its surface area is ....

 
Elmer Chesbro Dam  Llagas Creek  Santa Clara
Santa Clara County, California
Santa Clara County is a county located at the southern end of the San Francisco Bay Area in the U.S. state of California. As of 2010 it had a population of 1,781,642. The county seat is San Jose. The highly urbanized Santa Clara Valley within Santa Clara County is also known as Silicon Valley...

 
Santa Clara Valley Water District
Santa Clara Valley Water District
The Santa Clara Valley Water District provides stream stewardship, wholesale water supply and flood protection for Santa Clara County, California, in the southern San Francisco Bay Area. The district encompasses all of the county’s and serves the area’s 15 cities, 1.7 million residents and more...

 
1955 Earth and rock 95 29 8,952 11,042
Clear Lake  Clear Lake Impounding Dam  Cache Creek
Cache Creek (Yolo County, California)
Cache Creek is an stream in Lake County, California, Colusa County, California and Yolo County, California. The South Fork begins at Clear Lake in Lake County, roughly parallels State Route 20, and turns south at the junction with State Route 16 in Colusa County...

 
Lake
Lake County, California
Lake County is a county located in the north central portion of the U.S. state of California, north of the San Francisco Bay Area. It takes its name from Clear Lake, the dominant geographic feature in the county and the largest natural lake wholly within California...

 
Yolo County Flood Control and Water Conservation District  1914 Gravity  30 9 315,000 389,000
Clear Lake Reservoir
Clear Lake Reservoir
Clear Lake Reservoir is a reservoir in northwestern Modoc County, California in the Modoc National Forest about northwest of Alturas. It is formed by Clear Lake Dam on the Lost River and has a capacity of...

 
Clear Lake Dam  Lost River
Lost River (California)
Lost River begins and ends in a closed basin in northern California and southwestern Oregon in the United States. The river, long, flows in an arc from Clear Lake Reservoir in Modoc County, California, through Klamath County, Oregon to Tule Lake in Siskiyou County...

 
Modoc
Modoc County, California
Modoc County is a county located in the far northeast corner of the U.S. state of California, bounded by the state of Oregon to the north and the state of Nevada to the east. As of the 2010 census, its population was 9,686, up from 9,449 at the 2000 census. The current county seat is Alturas, the...

 
U.S. Bureau of Reclamation  1910 Rock-fill  32 10 451,000 556,000
Cogswell Reservoir  Cogswell Dam
Cogswell Dam
Cogswell Dam is a rockfill dam on the West Fork of the San Gabriel River in Los Angeles County, California. It forms Cogswell Reservoir, which has a capacity of with an average storage of , and serves mainly for flood control in conjunction with San Gabriel and Morris Dams downstream....

San Gabriel River
San Gabriel River (California)
The San Gabriel River flows through southern Los Angeles County, California in the United States. Its main stem is about long, while its farthest tributaries extend almost altogether...

, West Fork
Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
Los Angeles County Department of Public Works
Los Angeles County Department of Public Works
The Los Angeles County Department of Public Works is responsible for the construction and operation of Los Angeles County's roads, building safety, sewerage, and flood control...

 
1935 Rock-fill  266 81 8,969 11,063
Courtright Reservoir
Courtright Reservoir
Courtright Reservoir is a reservoir in Fresno County, California. The reservoir is at an elevation of 8,170 feet in the Sierra National Forest, in the Sierra Nevada Mountain Range. The reservoir is formed by Courtright Dam on Helms Creek and has a capacity of . The dam is composed of rock-fill and...

 
Courtright Dam  Helms Creek  Fresno
Fresno County, California
Fresno County is a county located in the Central Valley of the U.S. state of California, south of Stockton and north of Bakersfield. As of the 2010 census, it is the tenth most populous county in California with a population of 930,450, and the sixth largest in size with an area of . The county...

 
Pacific Gas and Electric  1958 Rock-fill  315 96 123,300 151,700
Coyote Reservoir  Coyote Dam
Coyote Dam (Santa Clara County, CA)
Coyote Dam, is a high, long, earth and rock dam built in 1936 in Santa Clara County, California, USA, located at north of Gilroy. It impounds Coyote Lake . The Santa Clara Valley Water District owns the dam.-See also:...

 
Coyote Creek
Coyote Creek
Coyote Creek is a river that flows through the Santa Clara Valley in California, United States.-History:Coyote Creek was originally named Arroyo del Coyote by Padre Pedro Font when the de Anza Expedition reached it on Sunday, March 31, 1776....

 
Santa Clara
Santa Clara County, California
Santa Clara County is a county located at the southern end of the San Francisco Bay Area in the U.S. state of California. As of 2010 it had a population of 1,781,642. The county seat is San Jose. The highly urbanized Santa Clara Valley within Santa Clara County is also known as Silicon Valley...

 
Santa Clara Valley Water District
Santa Clara Valley Water District
The Santa Clara Valley Water District provides stream stewardship, wholesale water supply and flood protection for Santa Clara County, California, in the southern San Francisco Bay Area. The district encompasses all of the county’s and serves the area’s 15 cities, 1.7 million residents and more...

 
1936 Earth and rock  138 42 22,925 28,278
Diamond Valley Lake
Diamond Valley Lake
The embankment required of crushed rock. An on-site crushing plant crushed and processed over 14 million tons of rock in 20 months to supply the dam's materials. The cut-off wall, which consists of a thick plastic concrete mix constructed through the weathered portion of bedrock, varies in depth...

 
Diamond Valley Dam Domenigoni Valley Creek  Riverside
Riverside County, California
Riverside County is a county in the U.S. state of California. One of 58 California counties, it covers in the southern part of the state, and stretches from Orange County to the Colorado River, which forms the state border with Arizona. The county derives its name from the city of Riverside,...

 
Metropolitan Water District of Southern California
Metropolitan Water District of Southern California
The Metropolitan Water District of Southern California is the largest supplier of treated water in the US. The name is usually shortened to the "Metropolitan Water District" or simply "MWD". It is a cooperative of 14 cities and 12 municipal water districts that indirectly provides water to 18...

 
1999 Earth and rock  284 87 800,000 987,000
Donnell Lake  Donnells Dam  Stanislaus River
Stanislaus River
The Stanislaus River in California is one of the largest tributaries of the San Joaquin River. The river is long and has north, middle and south forks...

, Middle Fork
Tuolumne
Tuolumne County, California
Tuolumne County is a county in the Sierra Nevada of the U.S. state of California. The northern half of Yosemite National Park is located in the eastern part of the county. As of the 2010 census, the population was 55,365, up from 54,501 at the 2000 census...

 
Oakdale & South San Joaquin Irrigation Districts  1958 Variable radius arch  291 89 56,893 70,176
Eastman Lake
Eastman Lake
H. V. Eastman Lake is an artificial lake formed by the construction of Buchanan Dam across the Chowchilla River in the foothills of Madera County, California. A small percentage of the northwest area of the reservoir is in Mariposa County.-References:*...

 
Buchanan Dam  Chowchilla River
Chowchilla River
The Chowchilla River is a river in central California and a minor tributary of the San Joaquin River. It flows for from the western side of the Sierra Nevada Range to the San Joaquin River system...

 
Madera
Madera County, California
Madera County is a county of the U.S. state of California, located in the Central Valley and the Sierra Nevada north of Fresno County. It comprises the Madera-Chowchilla, CA Metropolitan Statistical Area. As of the 2010 census the population was 150,865...

 
U.S. Army Corps of Engineers  1975 Earth and rock  192 59 150,000 185,000
Eaton Wash Reservoir  Eaton Wash Dam  Eaton Wash  Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
Los Angeles County Department of Public Works
Los Angeles County Department of Public Works
The Los Angeles County Department of Public Works is responsible for the construction and operation of Los Angeles County's roads, building safety, sewerage, and flood control...

 
1937 rock fill  63 19 721
El Capitan Reservoir
El Capitan Reservoir
El Capitan Reservoir is a reservoir in central San Diego County, California about 30 miles northeast of the city of San Diego and two miles north of the town of Alpine. The reservoir is formed by El Capitan Dam on the San Diego River and has a capacity of . The 237-foot dam is composed of...

 
El Capitan Dam
El Capitan Dam
El Capitan Dam is an embankment dam on the San Diego River in southern California. Completed in 1934, the dam forms El Capitan Reservoir and serves mainly to supply water to the city of San Diego as well as providing flood control. It is the largest storage facility in San Diego's water supply...

San Diego River
San Diego River
The San Diego River is a river in San Diego County, California. It originates in the Cuyamaca Mountains northwest of the town of Julian, then flows to the southwest until it reaches the El Capitan Reservoir, the largest reservoir in the river's watershed at . Below El Capitan Dam, the river runs...

 
San Diego
San Diego County, California
San Diego County is a large county located in the southwestern corner of the US state of California. Hence, San Diego County is also located in the southwestern corner of the 48 contiguous United States. Its county seat and largest city is San Diego. Its population was about 2,813,835 in the 2000...

 
San Diego City
San Diego, California
San Diego is the eighth-largest city in the United States and second-largest city in California. The city is located on the coast of the Pacific Ocean in Southern California, immediately adjacent to the Mexican border. The birthplace of California, San Diego is known for its mild year-round...

 
1934 Hydraulic fill
Hydraulic fill
A hydraulic fill is an embankment or other fill in which the materials are deposited in place by a flowing stream of water, with the deposition being selective...

 
237 72 112,800 139,100
Englebright Lake
Englebright Lake
Englebright Lake is a man-made reservoir formed along the Yuba River by Englebright Dam. It is located between Yuba and Nevada Counties, in Northern California, United States.-External links:*...

 
Englebright Dam
Englebright Dam
Englebright Dam is a high variable radius concrete arch dam on the Yuba River in the Sacramento River Basin, located in Yuba and Nevada Counties of California, USA. It was put into service in 1941 by the Army Corp of Engineers....

 
Yuba River
Yuba River
The Yuba River is a tributary of the Feather River in the Sacramento Valley of the U.S. state of California. It is one of the Feather's most important branches, providing about a third of its flow. The main stem of the river is about long, and its headwaters are split into North, Middle and South...

 
Yuba
Yuba County, California
Yuba County is a county located in the U.S. state of California's Central Valley, north of Sacramento, along the Feather River. As of the 2010 census, its population was 72,155. The county seat is Marysville. Yuba County is part of the Greater Sacramento area.-History:Yuba County was one of the...

 
U.S. Army Corps of Engineers  1941 Variable radius arch  280 85 70,000 86,000
Florence Lake
Florence Lake
For the reservoir in the Sierra Nevada Mountains, see Florence Lake .Florence Lake was an American actress best known as the leading lady in most of the Edgar Kennedy comedy shorts.-Early life:In the early 1900s, her father and uncle toured with a circus in an aerial act known as...

 
Florence Lake Dam  San Joaquin River
San Joaquin River
The San Joaquin River is the largest river of Central California in the United States. At over long, the river starts in the high Sierra Nevada, and flows through a rich agricultural region known as the San Joaquin Valley before reaching Suisun Bay, San Francisco Bay, and the Pacific Ocean...

, South Fork
Fresno
Fresno County, California
Fresno County is a county located in the Central Valley of the U.S. state of California, south of Stockton and north of Bakersfield. As of the 2010 census, it is the tenth most populous county in California with a population of 930,450, and the sixth largest in size with an area of . The county...

 
Southern California Edison
Southern California Edison
Southern California Edison , the largest subsidiary of Edison International , is the primary electricity supply company for much of Southern California, USA. It provides 14 million people with electricity...

 
?(Construction started in 1920) Multiple Arch  ? ? 64,406 79,444
Folsom Lake
Folsom Lake
Folsom Lake is a reservoir in Northern California about northeast of Sacramento in Placer, El Dorado, and Sacramento Counties. The lake is formed by Folsom Dam, constructed in 1955 to control the American River. The dam and lake are part of the Folsom Project, which also includes the Nimbus...

 
Folsom Dam
Folsom Dam
Folsom Dam is a concrete gravity dam on the American River in Northern California, about northeast of Sacramento. Folsom Dam is high concrete and long, flanked by earthen wing dams...

American River
American River
The American River is a California watercourse noted as the site of Sutter's Mill, northwest of Placerville, California, where gold was found in 1848, leading to the California Gold Rush...

 
Sacramento
Sacramento County, California
Sacramento County is a county in the U.S. state of California. Its county seat is Sacramento, which is also the state capital. As of 2010 the county had a population of 1,418,788....

, Placer
Placer County, California
Placer County is a county located in both the Sacramento Valley and Sierra Nevada regions of the U.S. state of California, in what is known as the Gold Country. It stretches from the suburbs of Sacramento to Lake Tahoe and the Nevada border. Because of the expansion of the Greater Sacramento,...

 and El Dorado
El Dorado County, California
El Dorado County is a county located in the historic Gold Country in the Sierra Nevada Mountains and foothills of the U.S. state of California. The 2010 population was 181,058. The El Dorado county seat is in Placerville....

 
U.S. Army Corps of Engineers  1956 Gravity 275 84 975,000 1,203,000
French Meadows Reservoir
French Meadows Reservoir
French Meadows Reservoir is a manmade lake northeast of Foresthill, California United States. on the Middle Fork of the American River. The reservoir is long, wide, with of shoreline....

 
L.L. Anderson Dam  American River
American River
The American River is a California watercourse noted as the site of Sutter's Mill, northwest of Placerville, California, where gold was found in 1848, leading to the California Gold Rush...

, Middle Fork
Placer
Placer County, California
Placer County is a county located in both the Sacramento Valley and Sierra Nevada regions of the U.S. state of California, in what is known as the Gold Country. It stretches from the suburbs of Sacramento to Lake Tahoe and the Nevada border. Because of the expansion of the Greater Sacramento,...

 
Placer County Water Authority  1965 Earth and rock  231 70 111,333 137,327
Guadalupe Reservoir
Guadalupe Reservoir
Guadalupe Reservoir is a reservoir in Santa Clara County, California, about east of the city of San Jose, California. It is at an elevation of . It has a capacity of . The dam is located on the Guadalupe River adjacent to Hicks Road...

 
Guadalupe Dam  Guadalupe Creek  Santa Clara
Santa Clara County, California
Santa Clara County is a county located at the southern end of the San Francisco Bay Area in the U.S. state of California. As of 2010 it had a population of 1,781,642. The county seat is San Jose. The highly urbanized Santa Clara Valley within Santa Clara County is also known as Silicon Valley...

 
Santa Clara Valley Water District
Santa Clara Valley Water District
The Santa Clara Valley Water District provides stream stewardship, wholesale water supply and flood protection for Santa Clara County, California, in the southern San Francisco Bay Area. The district encompasses all of the county’s and serves the area’s 15 cities, 1.7 million residents and more...

 
1935 Earth  129 39 3,228 3,982
Hansen Flood-Control Reservoir  Howard A. Hansen Dam Tujunga Wash
Tujunga Wash
Tujunga Wash is a stream in Los Angeles County, California. It is a tributary of the Los Angeles River, providing about a fifth of its flow, and drains about...

 
Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
U.S. Army Corps of Engineers  1940 Earth  97 30 25,446 31,387
Hensley Lake  Hidden Dam  Fresno River
Fresno River
The Fresno River is a river in Central California and a major tributary of the San Joaquin River. It runs approximately from the Sierra Nevada Range to the San Joaquin River.-Course:...

 
Madera
Madera County, California
Madera County is a county of the U.S. state of California, located in the Central Valley and the Sierra Nevada north of Fresno County. It comprises the Madera-Chowchilla, CA Metropolitan Statistical Area. As of the 2010 census the population was 150,865...

 
U.S. Army Corps of Engineers  1974 Earth  163 50 90,000 111,000
Hetch Hetchy Reservoir
Hetch Hetchy Reservoir
Hetch Hetchy Reservoir is a reservoir in Yosemite National Park, about northeast from the city of Merced, California. The reservoir has a capacity of and is formed by the concrete gravity O'Shaughnessy Dam in Hetch Hetchy Valley on the Tuolumne River...

 
O'Shaughnessy Dam
O'Shaughnessy Dam
The O'Shaughnessy Dam is a curved gravity dam on the Tuolumne River in the Hetch Hetchy Valley of California's Sierra Nevada. The dam is located in Yosemite National Park, and creates the Hetch Hetchy Reservoir. It is named for former San Francisco chief engineer and the original chief engineer of...

 
Tuolumne River
Tuolumne River
The Tuolumne River is a California river that flows nearly from the central Sierra Nevada to the San Joaquin River in the Central Valley...

 
Tuolumne
Tuolumne County, California
Tuolumne County is a county in the Sierra Nevada of the U.S. state of California. The northern half of Yosemite National Park is located in the eastern part of the county. As of the 2010 census, the population was 55,365, up from 54,501 at the 2000 census...

 
City and County of San Francisco
San Francisco, California
San Francisco , officially the City and County of San Francisco, is the financial, cultural, and transportation center of the San Francisco Bay Area, a region of 7.15 million people which includes San Jose and Oakland...

 
1923 Gravity  312 95 360,000 444,000
Hollywood Reservoir
Hollywood Reservoir
Hollywood Reservoir, also known as Lake Hollywood, is a reservoir located in Hollywood Hills of the Santa Monica Mountains in Los Angeles, California. It is maintained by the Los Angeles Department of Water and Power. The reservoir and surrounding neighborhood are located just below the Hollywood...

 
Mulholland Dam
Mulholland Dam
The Mulholland Dam is a Los Angeles Department of Water and Power dam located in the Hollywood Hills of Los Angeles, California. The dam impounds the Hollywood Reservoir, holding of water and is deep.-History:...

 
Weid Canyon  Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
Los Angeles Department of Water and Power
Los Angeles Department of Water and Power
The Los Angeles Department of Water and Power is the largest municipal utility in the United States, serving over four million residents. It was founded in 1902 to supply water and electricity to residents and businesses in Los Angeles and surrounding communities...

 
1924 Gravity  195 59 4,036 4,978
Huntington Lake
Huntington Lake
Huntington Lake is a reservoir in Fresno County, California on Big Creek, located in the Sierra Nevada at an elevation of 2,130 meters . Several smaller streams also flow into the lake and it receives additional water from the underground tunnels of Southern California Edison's Big Creek...

 
Huntington Dams 1, 2, 3, and 4 Big Creek  Fresno
Fresno County, California
Fresno County is a county located in the Central Valley of the U.S. state of California, south of Stockton and north of Bakersfield. As of the 2010 census, it is the tenth most populous county in California with a population of 930,450, and the sixth largest in size with an area of . The county...

 
Southern California Edison
Southern California Edison
Southern California Edison , the largest subsidiary of Edison International , is the primary electricity supply company for much of Southern California, USA. It provides 14 million people with electricity...

 
1913/1919 Gravity  ? ? 89,166 109,985
Indian Valley Reservoir
Indian Valley Reservoir
Indian Valley Reservoir is a manmade lake in Lake County, California, west of Williams near State Route 20.The capacity reservoir was created by the construction of the Indian Valley Dam across the north fork of Cache Creek in 1975...

 
Indian Valley Dam  Cache Creek
Cache Creek (Yolo County, California)
Cache Creek is an stream in Lake County, California, Colusa County, California and Yolo County, California. The South Fork begins at Clear Lake in Lake County, roughly parallels State Route 20, and turns south at the junction with State Route 16 in Colusa County...

, North Fork
Lake
Lake County, California
Lake County is a county located in the north central portion of the U.S. state of California, north of the San Francisco Bay Area. It takes its name from Clear Lake, the dominant geographic feature in the county and the largest natural lake wholly within California...

 
Yolo County Flood Control and Water Conservation District  1976 Earth  222 68 300,000 370,000
Iron Canyon Reservoir  Iron Canyon Dam  Iron Canyon Creek  Shasta
Shasta County, California
Shasta County is a county located in the northern portion of the U.S. state of California. The county occupies the northern reaches of the Sacramento Valley, with portions extending into the southern reaches of the Cascade Range. As of the 2010 census, the population was 177,223, up from 163,256...

 
Pacific Gas and Electric  1965 Earth  210 64 24,300 30,000
Ivanhoe Reservoir  Ivanhoe Reservoir Dam  Manmade Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
Los Angeles Department of Water and Power
Los Angeles Department of Water and Power
The Los Angeles Department of Water and Power is the largest municipal utility in the United States, serving over four million residents. It was founded in 1902 to supply water and electricity to residents and businesses in Los Angeles and surrounding communities...

 
1906 Earth  ? ? ? ?
Jackson Meadows Reservoir  Jackson Meadows Dam  Yuba River
Yuba River
The Yuba River is a tributary of the Feather River in the Sacramento Valley of the U.S. state of California. It is one of the Feather's most important branches, providing about a third of its flow. The main stem of the river is about long, and its headwaters are split into North, Middle and South...

, Middle Fork
Nevada
Nevada County, California
Nevada County is a county located in the Sierra Nevada of California, in the Mother Lode country. As of 2010 its population was 98,764. The county seat is Nevada City.-History:Nevada County was created in 1851 from parts of Yuba County....

 
Nevada Irrigation District
Nevada Irrigation District
Nevada Irrigation District is an agency in Northern California that supplies water for much of Nevada County and portions of Placer and Yuba Counties. The water is used for irrigation, municipal and domestic purposes...

 
1965 Rock-fill  195 59 52,500 64,800
Kent Lake
Kent Lake
Kent Lake is a reservoir in western Marin County, California formed by the construction of Peters Dam across Lagunitas Creek. Built in 1954, the lake is the most recent lake of the Marin Municipal Water District, as well as the largest...

 
Peters Dam  Lagunitas Creek
Lagunitas Creek
Lagunitas Creek is a stream in Marin County, California and is a major supply of drinking water to the area. The 20-mile long creek's headwaters are in the Coast Range and it flows into the Pacific Ocean, draining 103 square miles .The creek's source is the northern slope of Mount Tamalpais, a few...

 
Marin
Marin County, California
Marin County is a county located in the North San Francisco Bay Area of the U.S. state of California, across the Golden Gate Bridge from San Francisco. As of 2010, the population was 252,409. The county seat is San Rafael and the largest employer is the county government. Marin County is well...

 
Marin Municipal Water District
Marin Municipal Water District
The Marin Municipal Water District is the government agency that provides drinking water to southern and central Marin County, California. Chartered in 1912, it became California's first municipal water district...

 
1954 Earth  230 70 32,900 40,600
Lake Almanor
Lake Almanor
Lake Almanor is a large artificial lake in northwestern Plumas County, northeastern California. The reservoir has a capacity of and a maximum depth of about 90 feet...

 
Canyondam, California
Canyondam, California
Canyondam is a census-designated place in Plumas County, California, United States. Canyondam is located near the dam that forms Lake Almanor, east-southeast of Almanor...

 
Feather River
Feather River
The Feather River is the principal tributary of the Sacramento River, in the Sacramento Valley of Northern California. The river's main stem is about long. Its length to its most distant headwater tributary is about . Its drainage basin is about...

, North Fork
Plumas
Plumas County, California
Plumas County is a county located in the Sierra Nevada of the U.S. state of California. The county gets its name from the Spanish words for the Feather River , which flows through the county. As of the 2010 census, the population 20,007, down from 20,824 at the 2000 census...

 
Pacific Gas and Electric  1927 Hydraulic fill
Hydraulic fill
A hydraulic fill is an embankment or other fill in which the materials are deposited in place by a flowing stream of water, with the deposition being selective...

 
130 40 1,308,000 1,613,000
Lake Amador
Lake Amador
Lake Amador is a reservoir located in Amador County, California. It lies at an elevation of 325 feet.The lake's water is impounded by the Jackson Creek Dam, a tall earth-and-rock dam, built in 1965 across Jackson Creek. The dam is long and wide and contains of material. Its crest is about...

 
Jackson Creek Dam  Jackson Creek
Jackson Creek
Jackson Creek is a stream in Amador County, California, which feeds into Dry Creek southwest of Ione. It was linked to gold mining during the California Gold Rush era....

 
Amador
Amador County, California
Amador County is a county located in the Sierra Nevada of the U.S. state of California. As of the 2010 census, the population was 38,091. The county seat is Jackson.Amador County bills itself as "The Heart of the Mother Lode" and lies within the Gold Country...

 
Jackson Valley Irrigation District  1965 Earth and rock  193 59 22,000 27,000
Lake Arrowhead
Lake Arrowhead, California
Lake Arrowhead is an unincorporated community and a census-designated place in the San Bernardino Mountains of San Bernardino County, California, within the San Bernardino National Forest, adjacent to Lake Arrowhead Reservoir...

 
Lake Arrowhead Dam  Little Bear Creek  San Bernardino
San Bernardino County, California
San Bernardino County is a county in the U.S. state of California. As of the 2010 census, the population was 2,035,210, up from 1,709,434 as of the 2000 census...

 
Arrowhead Lake Association  1922 Hydraulic fill
Hydraulic fill
A hydraulic fill is an embankment or other fill in which the materials are deposited in place by a flowing stream of water, with the deposition being selective...

 
190 58 48,000 59,000
Lake Berryessa
Lake Berryessa
Lake Berryessa is the largest lake in Napa County, California. This reservoir is formed by the Monticello Dam, which provides water and hydroelectricity to the North Bay region of the San Francisco Bay Area....

 
Monticello Dam
Monticello Dam
Monticello Dam is a dam in Napa County, California, United States constructed between 1953 and 1957. It is a medium concrete-arch dam with a structural height of 304 ft and a crest length of . It contains 326,000 cubic yards of concrete...

Putah Creek
Putah Creek
Putah Creek is a major stream in Northern California, a tributary of the Yolo Bypass. The creek has its headwaters in the Mayacamas Mountains, a part of the Coast Range...

 
Napa
Napa County, California
Napa County is a county located north of the San Francisco Bay Area in the U.S. state of California. It is coterminous with the Napa, California, Metropolitan Statistical Area. As of 2010 the population is 136,484. The county seat is Napa....

 
U.S. Bureau of Reclamation  1957 Variable radius arch  255 78 1,602,000 1,976,000
Lake Britton
Lake Britton
Lake Britton is a reservoir located in Shasta County, California. It is known for its wide variety of bass and trout. It is situated to the west of State Route 89, and is surrounded mostly by McArthur-Burney Falls Memorial State Park, and runs along North Shore campgrounds and Dusty Campgrounds. It...

 
Pit 3 Dam
Pit 3 Dam
Pit-3 Dam is a dam across the Pit River in northern California in the United States. It forms Lake Britton, which stretches upstream. The dam is used mainly to divert water into a penstock that runs about downstream to generate hydroelectricity...

 
Pit River
Pit River
The Pit River is a major river draining from northeastern California into the state's Central Valley. The Pit, the Klamath and the Columbia are the only three rivers in the U.S...

 
Shasta
Shasta County, California
Shasta County is a county located in the northern portion of the U.S. state of California. The county occupies the northern reaches of the Sacramento Valley, with portions extending into the southern reaches of the Cascade Range. As of the 2010 census, the population was 177,223, up from 163,256...

 
Pacific Gas and Electric Company
Pacific Gas and Electric Company
The Pacific Gas and Electric Company , commonly known as PG&E, is the utility that provides natural gas and electricity to most of the northern two-thirds of California, from Bakersfield almost to the Oregon border...

 
1925 Concrete gravity  494 120 34,600 42,678
Lake Cachuma
Lake Cachuma
Lake Cachuma is an artificial lake located in the Santa Ynez Valley of central Santa Barbara County, California on the Santa Ynez River adjoining the north side of California State Route 154. The reservoir was created by the construction of Bradbury Dam, a earth-fill structure built by the U.S....

 
Bradbury Dam
Bradbury Dam
Bradbury Dam is an earthen dam across the Santa Ynez River in central Santa Barbara County, California. The dam forms Lake Cachuma, which provides the majority of water supplies within the county....

 
Santa Ynez River
Santa Ynez River
The Santa Ynez River is one of the largest rivers on the Central Coast of California. It is long, flowing from east to west through the Santa Ynez Valley, reaching the Pacific Ocean at Surf, near Vandenberg Air Force Base and the city of Lompoc....

 
Santa Barbara
Santa Barbara County, California
Santa Barbara County is a county located in the southern portion of the U.S. state of California, on the Pacific coast. As of 2010 the county had a population of 423,895. The county seat is Santa Barbara and the largest city is Santa Maria.-History:...

 
U.S. Bureau of Reclamation  1953 Earth  201 61 205,000 253,000
Lake Casitas
Lake Casitas
Lake Casitas is an artificial lake in the Los Padres National Forest of Ventura County, California, created by the construction of Casitas Dam on Coyote Creek, two miles before it joins the Ventura River. Santa Ana Creek and North Fork Coyote Creek also flow into the lake. The dam was constructed...

 
Casitas Dam
Casitas Dam
Casitas Dam is an earthfill dam across Coyote Creek that forms Lake Casitas in the Los Padres National Forest of Ventura County, California near Ojai, California. The dam is located two miles above the junction of Coyote Creek and the Ventura River. Water from the Ventura River is diverted to Lake...

Coyote Creek
Coyote Creek (Ventura County)
Coyote Creek is a stream in Ventura County, California, United States which feeds Lake Casitas. It is a major tributary of the Ventura River....

 
Ventura
Ventura County, California
Ventura County is a county in the southern part of the U.S. state of California. It is located on California's Pacific coast. It is often referred to as the Gold Coast, and has a reputation of being one of the safest populated places and one of the most affluent places in the country...

 
U.S. Bureau of Reclamation  1959 Earth  279 85 254,000 313,000
Lake Crowley  Long Valley Dam  Owens River
Owens River
The Owens River is a river in southeastern California in the United States, approximately long. It drains into and through the Owens Valley, an arid basin between the eastern slope of the Sierra Nevada and the western faces of the Inyo and White Mountains. The river terminates at Owens Lake, but...

 
Mono
Mono County, California
Mono County is a county located in the east central portion of the U.S. state of California, to the east of the Sierra Nevada between Yosemite National Park and Nevada. As of the 2010 census, the population was 14,202, up from 12,853 at the 2000 census...

 
Los Angeles Department of Water and Power
Los Angeles Department of Water and Power
The Los Angeles Department of Water and Power is the largest municipal utility in the United States, serving over four million residents. It was founded in 1902 to supply water and electricity to residents and businesses in Los Angeles and surrounding communities...

 
1941 Earth  126 38 183,465 226,300
Lake Del Valle
Lake Del Valle
Lake Del Valle is an artificial lake located southeast of Livermore, California on Arroyo del Valle in Del Valle Regional Park....

 
Del Valle Dam  Arroyo Valle  Alameda
Alameda County, California
Alameda County is a county in the U.S. state of California. It occupies most of the East Bay region of the San Francisco Bay Area. As of the 2010 census it had a population of 1,510,271, making it the 7th most populous county in the state...

 
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...

 
1968 Earth  222 68 77,100 95,100
Don Pedro Reservoir  Don Pedro Dam
Don Pedro Dam
The Don Pedro Dam, since 1971 also known as the Old Don Pedro Dam, was a dam across the Tuolumne River in Tuolumne County, California. The structure is currently flooded underneath Don Pedro Reservoir, which is formed by the New Don Pedro Dam....

 
Tuolumne River
Tuolumne River
The Tuolumne River is a California river that flows nearly from the central Sierra Nevada to the San Joaquin River in the Central Valley...

 
Tuolumne
Tuolumne County, California
Tuolumne County is a county in the Sierra Nevada of the U.S. state of California. The northern half of Yosemite National Park is located in the eastern part of the county. As of the 2010 census, the population was 55,365, up from 54,501 at the 2000 census...

 
Modesto Irrigation District and Turlock Irrigation District  1971 Earth and rock 568 173 2,030,000 2,504,000
Lake Havasu
Lake Havasu
Lake Havasu is a large reservoir behind Parker Dam on the Colorado River, on the border between California and Arizona. Lake Havasu City sits on the lake's eastern shore. The lake has a capacity of . The concrete arch dam was built by the United States Bureau of Reclamation between 1934 and 1938...

 
Parker Dam
Parker Dam
Parker Dam is a concrete arch-gravity dam that crosses the Colorado River downstream of Hoover Dam. Built between 1934 and 1938 by the Bureau of Reclamation, it is high, of which are below the riverbed, making it "the deepest dam in the world". The dam's primary functions are to create a...

 
Colorado River
Colorado River
The Colorado River , is a river in the Southwestern United States and northwestern Mexico, approximately long, draining a part of the arid regions on the western slope of the Rocky Mountains. The watershed of the Colorado River covers in parts of seven U.S. states and two Mexican states...

 
San Bernardino
San Bernardino County, California
San Bernardino County is a county in the U.S. state of California. As of the 2010 census, the population was 2,035,210, up from 1,709,434 as of the 2000 census...

 and Mohave
Mohave County, Arizona
Mohave County is located in the northwestern corner of the U.S. state of Arizona. As of the 2010 census, its population was 200,186, an increase of 45,154 people since the 2000 census count of 155,032. The county seat is Kingman...

 
U.S. Bureau of Reclamation  1938 Variable radius arch  75 23 648,000 799,000
Lake Hemet
Lake Hemet
Lake Hemet is a water storage reservoir located in the San Jacinto Mountains in Riverside County, California, with a capacity of of water. It was created in 1895 with the construction of the Hemet Dam, and is owned and operated by the Lake Hemet Municipal Water District .- Facts and statistics...

 
Hemet Dam  San Jacinto River
San Jacinto River (California)
The San Jacinto River is a river in Riverside County, California. The river's headwaters are in San Bernardino National Forest, but the lower portion of the watershed is urban and agricultural land....

 
Riverside
Riverside County, California
Riverside County is a county in the U.S. state of California. One of 58 California counties, it covers in the southern part of the state, and stretches from Orange County to the Colorado River, which forms the state border with Arizona. The county derives its name from the city of Riverside,...

 
Lake Hemet Municipal Water District  1895 Masonry (arch) 135 41 8,100 9,800
Lake Hennessey
Lake Hennessey
Lake Hennessey is a man-made lake in the hills east of St. Helena, California, U.S.A..The lake is formed by Conn Creek Dam, built in 1948 across Conn Creek. Construction of the earthen dam was authorized by the United States Congress when it passed the Flood Control Act of 1944 in order to...

 
Conn Creek Dam  Conn Creek  Napa
Napa, California
-History:The name Napa was probably derived from the name given to a southern Nappan village whose people shared the area with elk, deer, grizzlies and cougars for many centuries, according to Napa historian Kami Santiago. At the time of the first recorded exploration into Napa Valley in 1823, the...

 
City of Napa
Napa, California
-History:The name Napa was probably derived from the name given to a southern Nappan village whose people shared the area with elk, deer, grizzlies and cougars for many centuries, according to Napa historian Kami Santiago. At the time of the first recorded exploration into Napa Valley in 1823, the...

 
1946 Earth  125 38 31,000 38,000
Lake Henshaw
Lake Henshaw
Lake Henshaw is a Reservoir in San Diego County, Californiaat the southeast base of Palomar Mountain, approximately miles northeast of San Diego, California and miles southeast of Los Angeles....

 
Henshaw Dam  San Luis Rey River
San Luis Rey River
The San Luis Rey River is a river in northern San Diego County, California. The river's headwaters are in the Cleveland National Forest near Palomar Mountain. The river drains into the Pacific Ocean on the northern end of the city of Oceanside. The river is over long and drains...

 
San Diego
San Diego County, California
San Diego County is a large county located in the southwestern corner of the US state of California. Hence, San Diego County is also located in the southwestern corner of the 48 contiguous United States. Its county seat and largest city is San Diego. Its population was about 2,813,835 in the 2000...

 
Vista Irrigation District 1923 Hydraulic fill
Hydraulic fill
A hydraulic fill is an embankment or other fill in which the materials are deposited in place by a flowing stream of water, with the deposition being selective...

 
123 37.5 53,400 65,700
Lake Hodges
Lake Hodges
Lake Hodges is a lake and reservoir located in Southern California, about north of San Diego and just south of Escondido, California. When full, the reservoir has , a maximum water depth of , and of shoreline. Interstate 15 crosses Lake Hodges via the Lake Hodges Bridge...

 
Lake Hodges Dam  San Dieguito River
San Dieguito River
The San Dieguito River is a major river in Southern California, USA. Its headwaters rise on the southern slope of the Volcan Mountains in San Diego County and the river flows generally southwest for , draining before emptying into the Pacific Ocean north of San Diego.-Course:The river officially...

 
San Diego
San Diego County, California
San Diego County is a large county located in the southwestern corner of the US state of California. Hence, San Diego County is also located in the southwestern corner of the 48 contiguous United States. Its county seat and largest city is San Diego. Its population was about 2,813,835 in the 2000...

 
City of San Diego
San Diego, California
San Diego is the eighth-largest city in the United States and second-largest city in California. The city is located on the coast of the Pacific Ocean in Southern California, immediately adjacent to the Mexican border. The birthplace of California, San Diego is known for its mild year-round...

1918 Multiple arch  131 40 30,250 37,200
Lake Isabella
Lake Isabella
Lake Isabella is a reservoir in Kern County, California created by the earthen Isabella Dam. It was formed in 1953 when the U.S. Army Corps of Engineers dammed the Kern River at the junction of its two forks at Whiskey Flat. At 11,000 acres , it is one of the larger reservoirs in California...

 
Isabella Dam
Isabella Dam
Isabella Dam is an embankment dam located about halfway down the Kern River, between the towns of Kernville and Lake Isabella in Kern County, California. Isabella Dam serves agricultural, hydroelectric, and flood control uses.-History:...

 
Kern River
Kern River
The Kern River is a river in the U.S. state of California, approximately long. It drains an area of the southern Sierra Nevada mountains northeast of Bakersfield. Fed by snowmelt near Mount Whitney, the river passes through scenic canyons in the mountains and is a popular destination for...

 
Kern
Kern County, California
Spreading across the southern end of the California Central Valley, Kern County is the fifth-largest county by population in California. Its economy is heavily linked to agriculture and to petroleum extraction, and there is a strong aviation and space presence. Politically, it has generally...

 
U.S. Army Corps of Engineers  1953 Earth  185 56 568,000 701,000
Lake Jennings
Lake Jennings
- Camping :The campground at Lake Jennings Park has a variety of campsites available, including hookups and primitive tent sites....

 
Chet Harritt Dam  Quail Canyon Creek  San Diego
San Diego County, California
San Diego County is a large county located in the southwestern corner of the US state of California. Hence, San Diego County is also located in the southwestern corner of the 48 contiguous United States. Its county seat and largest city is San Diego. Its population was about 2,813,835 in the 2000...

 
Helix Water District  1962 Earth  200 61 9,790 12,080
Lake Kaweah
Lake Kaweah
Lake Kaweah is a reservoir near Lemon Cove in Tulare County, California. The lake is formed by Terminus Dam on the Kaweah River. The river originates in the Sierra Nevada mountains and drains about into Lake Kaweah. From Lake Kaweah, the river passes near the city of Visalia as it flows west into...

 
Terminus Dam
Terminus Dam
Terminus Dam is a dam on the Kaweah River, which serves to form Lake Kaweah.The dam provides irrigation and municipal water supply, and as a result, the Kaweah River below the dam is usually regulated for a stable flow year round. The South Fork and the mainstem of the Kaweah both flow into the...

Kaweah River
Kaweah River
The Kaweah River in the U.S. state of California flows westward from the foothills of the Sierra Nevada into the Central Valley. It rises in forks in the southern Sierra Nevada inside Sequoia National Park, the longest of which is the Middle Fork, about long...

 
Tulare
Tulare County, California
Tulare County is a county located in the Central Valley of the U.S. state of California, south of Fresno. Sequoia National Park is located in the county, as are part of Kings Canyon National Park, in its northeast corner , and part of Mount Whitney, on its eastern border...

 
U.S. Army Corps of Engineers  1962 Earth  255 78 143,000 176,000
Lake Loveland  Loveland Dam
Loveland Dam
Loveland Dam is a dam across the Sweetwater River in San Diego County, California. The dam forms long, narrow Loveland Reservoir which stores of water...

 
Sweetwater River
Sweetwater River (California)
The Sweetwater River is a long stream in southwestern California in the United States. From its headwaters high in the Cuyamaca Mountains, the river flows generally southwest, first through rugged hinterlands but then into the urban areas surrounding its mouth at San Diego Bay. Its drainage basin...

 
San Diego
San Diego County, California
San Diego County is a large county located in the southwestern corner of the US state of California. Hence, San Diego County is also located in the southwestern corner of the 48 contiguous United States. Its county seat and largest city is San Diego. Its population was about 2,813,835 in the 2000...

 
South Bay Irrigation District  1945 Variable radius arch  203 62 25,400 31,300
Lake Mathews
Lake Mathews
Lake Mathews is a large reservoir in Riverside County, California, located in the foothills of the Santa Ana Mountains. It is the western terminus for the Colorado River Aqueduct that provides much of the water used by the cities and water districts of the Metropolitan Water District of Southern...

 
Mathews Dam Cajalco Creek Tributary Riverside
Riverside County, California
Riverside County is a county in the U.S. state of California. One of 58 California counties, it covers in the southern part of the state, and stretches from Orange County to the Colorado River, which forms the state border with Arizona. The county derives its name from the city of Riverside,...

 
Metropolitan Water District of Southern California
Metropolitan Water District of Southern California
The Metropolitan Water District of Southern California is the largest supplier of treated water in the US. The name is usually shortened to the "Metropolitan Water District" or simply "MWD". It is a cooperative of 14 cities and 12 municipal water districts that indirectly provides water to 18...

 
1938 Earth  264 80 182,000 224,000
Lake McClure
Lake McClure
Lake McClure is a artificial lake in western Mariposa County, California, about east of Modesto. It is formed by New Exchequer Dam on the Merced River, a tributary of the San Joaquin River, and its capacity is . It is a rock-fill dam with a reinforced concrete face and was completed in 1967...

 
New Exchequer Dam
New Exchequer Dam
New Exchequer Dam is an earthfill dam on the Merced River in central California. It is mainly used by the Merced Irrigation District to provide irrigation water to several hundred square miles of the San Joaquin Valley surrounding the line of the Merced River.The dam was built to increase the...

 
Merced River
Merced River
The Merced River , in the central part of the U.S. state of California, is a -long tributary of the San Joaquin River flowing from the Sierra Nevada into the Central Valley. It is most well known for its swift and steep course through the southern part of Yosemite National Park, and the...

 
Mariposa
Mariposa County, California
Mariposa County is a county in the U.S. state of California, located in the western foothills of the Sierra Nevada mountains. It lies north of Fresno, east of Merced, and southeast of Stockton. As of the 2010 census, the population was 18,251 up from 17,130 at the 2000 census...

 
Merced Irrigation District  1967 Rock-fill  479 146 1,032,000 1,273,000
Lake Mendocino
Lake Mendocino
Lake Mendocino is a large reservoir in Mendocino County, California, northeast of Ukiah. It covers and was formed by the construction of Coyote Dam in 1958. The lake and dam provide flood control, water conservation, hydroelectric power, and recreation.-Recreation:Lake Mendocino is administered by...

 
Coyote Valley Dam  Russian River
Russian River (California)
The Russian River, a southward-flowing river, drains of Sonoma and Mendocino counties in Northern California. With an annual average discharge of approximately , it is the second largest river flowing through the nine county Greater San Francisco Bay Area with a mainstem 110 miles ...

, East Fork
Mendocino
Mendocino County, California
Mendocino County is a county located on the north coast of the U.S. state of California, north of the greater San Francisco Bay Area and west of the Central Valley. As of the 2010 census, the population was 87,841, up from 86,265 at the 2000 census...

 
U.S. Army Corps of Engineers  1959 Earth  164 50 122,400 151,000
Lake Nacimiento
Lake Nacimiento
Lake Nacimiento is an long lake on the Nacimiento River in northern San Luis Obispo County, California. The lake contains many arms including Snake Creek and Dip Creek, nearer the dam, and the central Las Tablas and Franklin Creeks. Because of the dragon-like shape created by the positions of...

 
Nacimiento Dam  Nacimiento River
Nacimiento River
The Nacimiento River is a river in southern Monterey County and northern San Luis Obispo County, California. A large portion of the river's run is on military reservations...

 
San Luis Obispo
San Luis Obispo County, California
San Luis Obispo County is a county located along the Pacific Ocean in the Central Coast of the U.S. state of California, between Los Angeles and the San Francisco Bay Area. As of the 2010 census its population was 269,637, up from 246,681 at the 2000 census...

 
Monterey County Water Authority  1961 Rock-fill  210 64 350,000 432,000
Lake Oroville
Lake Oroville
Lake Oroville, also known as Lake Edmonston, is a reservoir in the U.S. state of California, formed by the Oroville Dam across the Feather River. The lake is situated in the foothills of the Sierra Nevada about northeast of Oroville. At over , it is one of the largest reservoirs in California,...

 
Oroville Dam
Oroville Dam
Oroville Dam spans the Feather River about northeast of the city of Oroville, California. It forms Lake Oroville, which stores water for irrigation, flood control, municipal water supply and hydroelectricity generation in California's Sacramento Valley. The dam lies in the foothills of the Sierra...

 
Feather River
Feather River
The Feather River is the principal tributary of the Sacramento River, in the Sacramento Valley of Northern California. The river's main stem is about long. Its length to its most distant headwater tributary is about . Its drainage basin is about...

 
Butte
Butte County, California
Butte County is a county located in the Central Valley of the US state of California, north of the state capital of Sacramento. As of the 2010 census, it had a population of 220,000. The county seat is Oroville. Butte County is the "Land of Natural Wealth and Beauty."Butte County is watered 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...

 
1968 Earth  742 226 3,537,577 4,363,530
Lake Perris
Lake Perris
Lake Perris is an artificial lake completed in 1973. It is the southern terminus of the California State Water Project situated in a mountain-rimmed valley between Moreno Valley, and city of Perris in what is now the Lake Perris State Recreation Area. The park offers a variety of recreational...

 
Perris Dam  Bernasconi Pass  Riverside
Riverside County, California
Riverside County is a county in the U.S. state of California. One of 58 California counties, it covers in the southern part of the state, and stretches from Orange County to the Colorado River, which forms the state border with Arizona. The county derives its name from the city of Riverside,...

 
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...

 
1973 Earth  130 40 131,452 162,143
Lake Piru
Lake Piru
Lake Piru is an artificial lake located in Los Padres National Forest of Ventura County, California, created by the construction in 1955 of the Santa Felicia Dam on Piru Creek which is a tributary of the Santa Clara River. It is situated downstream from Pyramid Lake and can be accessed from Piru...

 
Santa Felicia Dam  Piru Creek
Piru Creek
Piru Creek is a large stream in northern Los Angeles County and eastern Ventura County, California. It is a tributary of the Santa Clara River, the largest stream system in Southern California that is still relatively natural. It drains an area of about and is about long. The creek is the Santa...

 
Ventura
Ventura County, California
Ventura County is a county in the southern part of the U.S. state of California. It is located on California's Pacific coast. It is often referred to as the Gold Coast, and has a reputation of being one of the safest populated places and one of the most affluent places in the country...

 
United Water Conservation District  1955 Earth  213 65 100,000 123,000
Lake Ramona  Ramona Dam  Green Valley Road Creek  San Diego
San Diego County, California
San Diego County is a large county located in the southwestern corner of the US state of California. Hence, San Diego County is also located in the southwestern corner of the 48 contiguous United States. Its county seat and largest city is San Diego. Its population was about 2,813,835 in the 2000...

 
Ramona Municipal Water District  1988 Earth  228 69 12,200 15,000
Lake San Antonio
Lake San Antonio
Lake San Antonio is a lake in southern Monterey County, California. The lake is formed by an earthfill dam on the San Antonio River. The dam is 202 feet tall and was completed in 1965 under Monterey County District Engineer Loran Bunte Jr . The lake and dam are owned by the Monterey County Water...

 
San Antonio Dam  San Antonio River
San Antonio River (California)
The San Antonio River is a river in southern Monterey County, California.-Geography:The river travels southeast from its headwaters in the Santa Lucia Range in the Los Padres National Forest and into Lake San Antonio. This is a reservoir behind the San Antonio Dam, an earth-fill dam on the river...

 
Monterey
Monterey County, California
Monterey County is a county located on the Pacific coast of the U.S. state of California, its northwestern section forming the southern half of Monterey Bay. The northern half of the bay is in Santa Cruz County. As of 2010, the population was 415,057. The county seat and largest city is Salinas...

 
Monterey County Water Authority  1965 Earth  202 62 350,000 432,000
Lake Shasta  Shasta Dam
Shasta Dam
Shasta Dam is an arch dam across the Sacramento River in the northern part of the U.S. state of California, at the north end of the Sacramento Valley. The dam mainly serves long-term water storage and flood control in its reservoir, Shasta Lake, and also generates hydroelectric power...

 
Sacramento River
Sacramento River
The Sacramento River is an important watercourse of Northern and Central California in the United States. The largest river in California, it rises on the eastern slopes of the Klamath Mountains, and after a journey south of over , empties into Suisun Bay, an arm of the San Francisco Bay, and...

 
Shasta
Shasta County, California
Shasta County is a county located in the northern portion of the U.S. state of California. The county occupies the northern reaches of the Sacramento Valley, with portions extending into the southern reaches of the Cascade Range. As of the 2010 census, the population was 177,223, up from 163,256...

 
U.S. Bureau of Reclamation  1945 Gravity  521 159 4,552,200 5,615,000
Lake Siskiyou
Lake Siskiyou
Lake Siskiyou is a reservoir formed by Box Canyon Dam on the Sacramento River, in far northern California, near the town of Mount Shasta, California. It is the site of local recreation, as well as being used for watershed protection and flood control....

 
Box Canyon Dam (California)
Box Canyon Dam (California)
Box Canyon Dam is a concrete gravity dam on the Sacramento River forming Lake Siskiyou in the Shasta National Forest of Siskiyou County, California.-References:* NPDP Dam Directory. Accessed 2008-01-04.* Accessed 2008-01-04.-External links:*...

 
Sacramento River
Sacramento River
The Sacramento River is an important watercourse of Northern and Central California in the United States. The largest river in California, it rises on the eastern slopes of the Klamath Mountains, and after a journey south of over , empties into Suisun Bay, an arm of the San Francisco Bay, and...

 
Siskiyou
Siskiyou County, California
Siskiyou County is a county located in the far northernmost part of the U.S. state of California, in the Shasta Cascade region on the Oregon border. Yreka is the county seat. Because of its substantial natural beauty, outdoor recreation opportunities, and Gold Rush era history, it is an important...

 
Siskiyou County Flood Control & Water Conservation District  1969 Gravity  204 62 26,000 32,000
Lake Skinner
Lake Skinner
Lake Skinner is a large reservoir in western Riverside County, California, located at the foot of Bachelor Mountain in the Auld Valley, approximately 10 miles northeast of Temecula...

 
Skinner Clearwell  offstream Riverside
Riverside County, California
Riverside County is a county in the U.S. state of California. One of 58 California counties, it covers in the southern part of the state, and stretches from Orange County to the Colorado River, which forms the state border with Arizona. The county derives its name from the city of Riverside,...

 
Metropolitan Water District of Southern California
Metropolitan Water District of Southern California
The Metropolitan Water District of Southern California is the largest supplier of treated water in the US. The name is usually shortened to the "Metropolitan Water District" or simply "MWD". It is a cooperative of 14 cities and 12 municipal water districts that indirectly provides water to 18...

 
1973/1991 Earth  44 13 44,200 54,400
Lake Sonoma
Lake Sonoma
Lake Sonoma is a reservoir west of Healdsburg in northern Sonoma County, California, U.S.A., created by the construction of Warm Springs Dam. Access from U.S. Route 101 is by way of Dry Creek Road from Healdsburg....

 
Warm Springs Dam  Dry Creek  Sonoma
Sonoma County, California
Sonoma County, located on the northern coast of the U.S. state of California, is the largest and northernmost of the nine San Francisco Bay Area counties. Its population at the 2010 census was 483,878. Its largest city and county seat is Santa Rosa....

 
U.S. Army Corps of Engineers  1982 Earth  319 97 381,000 470,000
Lake Success
Lake Success (California)
Lake Success is a lake near Porterville, California on the Tule River at . It is formed by Success Dam and has a capacity of . The tall earth dam is owned and operated by the U.S. Army Corps of Engineers. Its construction was completed in 1961...

 
Success Dam  Tule River
Tule River
The Tule River, also called Rio de San Pedro or Rio San Pedro, is a river in Tulare County in the U.S. state of California. The river originates in the Sierra Nevada east of Porterville and consists of three forks, North, Middle and South. The North Fork and Middle Fork meet above Springville. The...

 
Tulare
Tulare County, California
Tulare County is a county located in the Central Valley of the U.S. state of California, south of Fresno. Sequoia National Park is located in the county, as are part of Kings Canyon National Park, in its northeast corner , and part of Mount Whitney, on its eastern border...

 
U.S. Army Corps of Engineers  1961 Earth  142 43 82,300 101,500
Lake Tahoe
Lake Tahoe
Lake Tahoe is a large freshwater lake in the Sierra Nevada of the United States. At a surface elevation of , it is located along the border between California and Nevada, west of Carson City. Lake Tahoe is the largest alpine lake in North America. Its depth is , making it the USA's second-deepest...

 
Lake Tahoe Dam  Truckee River
Truckee River
The Truckee River is a stream in the U.S. states of California and Nevada. The river is about long. Its endorheic drainage basin is about , of which about are in Nevada. The Truckee is the sole outlet of Lake Tahoe and drains part of the high Sierra Nevada, emptying into Pyramid Lake in the Great...

 
Placer
Placer County, California
Placer County is a county located in both the Sacramento Valley and Sierra Nevada regions of the U.S. state of California, in what is known as the Gold Country. It stretches from the suburbs of Sacramento to Lake Tahoe and the Nevada border. Because of the expansion of the Greater Sacramento,...

 
U.S. Bureau of Reclamation  1913 Gravity  14 4 122,160,280² 150,682,260
Lake Wishon  Wishon Dam Kings River
Kings River (California)
The Kings River is a major river of south-central California. About long, it drains an area of the high western Sierra Nevada and the Central Valley. A large alluvial fan has formed where the river's gradient decreases in the Central Valley so the river divides into distributaries...

, North Fork
Fresno
Fresno County, California
Fresno County is a county located in the Central Valley of the U.S. state of California, south of Stockton and north of Bakersfield. As of the 2010 census, it is the tenth most populous county in California with a population of 930,450, and the sixth largest in size with an area of . The county...

 
Pacific Gas and Electric  1958 Rock-fill  265 81 118,000 146,000
Lexington Reservoir
Lexington Reservoir
Lexington Reservoir is an artificial lake on the Los Gatos Creek near Los Gatos, California. The James J. Lenihan Dam, a high, thick earthen dam, forms the third-largest reservoir in Santa Clara County.-Background:...

 
James J. Lenihan Dam
James J. Lenihan Dam
James J. Lenihan Dam is an earthen structure across the Los Gatos Creek creating the Lexington Reservoir in the Santa Cruz Mountains of Santa Clara County, California south of Los Gatos. The name was changed from Lexington Dam in 1996 for the retirement of James J...

 
Los Gatos Creek
Los Gatos Creek (Santa Clara County, California)
The Los Gatos Creek runs 24 miles in California through Santa Clara Valley Water District's Guadalupe Watershed from the Santa Cruz Mountains northward through the Santa Clara Valley until its confluence with the Guadalupe River in downtown San Jose...

 
Santa Clara
Santa Clara County, California
Santa Clara County is a county located at the southern end of the San Francisco Bay Area in the U.S. state of California. As of 2010 it had a population of 1,781,642. The county seat is San Jose. The highly urbanized Santa Clara Valley within Santa Clara County is also known as Silicon Valley...

 
Santa Clara Valley Water District
Santa Clara Valley Water District
The Santa Clara Valley Water District provides stream stewardship, wholesale water supply and flood protection for Santa Clara County, California, in the southern San Francisco Bay Area. The district encompasses all of the county’s and serves the area’s 15 cities, 1.7 million residents and more...

 
1953 Earth  208 63 19,044 23,490
Little Grass Valley Reservoir
Little Grass Valley, California
Little Grass Valley is a lake located in Plumas County, California, USA. As of the 2010 census, the census-designated place had a total population of 2.-Geography:Little Grass Valley is located at 39°42'59" North, 120°58'35" West ....

 
Little Grass Valley Dam  Feather River
Feather River
The Feather River is the principal tributary of the Sacramento River, in the Sacramento Valley of Northern California. The river's main stem is about long. Its length to its most distant headwater tributary is about . Its drainage basin is about...

, South Fork
Plumas
Plumas County, California
Plumas County is a county located in the Sierra Nevada of the U.S. state of California. The county gets its name from the Spanish words for the Feather River , which flows through the county. As of the 2010 census, the population 20,007, down from 20,824 at the 2000 census...

 
Oroville-Wyandotte Irrigation District  1961 Rock-fill  210 64 93,010 114,730
Los Vaqueros Reservoir
Los Vaqueros Reservoir
The Los Vaqueros Reservoir was completed by the Contra Costa Water District in 1998 to improve the quality of drinking water for its 550,000 customers in Central and Eastern Contra Costa County in Northern California...

 
Los Vaqueros Dam  Kellog Creek  Contra Costa
Contra Costa County, California
Contra Costa County is a primarily suburban county in the San Francisco Bay Area of the U.S. state of California. As of the 2010 census, it had a population of 1,049,025...

 
Contra Costa County Water District  1997 Earth  197 60 100,000 123,000
Lower Bear River Reservoir  Lower Bear River Dam Bear River
Bear River (Mokelumne River tributary)
The Bear River is a river in the Sierra Nevada in California. It is a tributary of the Mokelumne River. The river and its watershed are entirely in El Dorado National Forest. The river begins as two forks several miles south of Kirkwood. The forks travel roughly southwest and merge just before the...

, Lower
Amador
Amador County, California
Amador County is a county located in the Sierra Nevada of the U.S. state of California. As of the 2010 census, the population was 38,091. The county seat is Jackson.Amador County bills itself as "The Heart of the Mother Lode" and lies within the Gold Country...

 
Pacific Gas and Electric  1952 Rock-fill  253 77 48,750 60,130
Lower Hell Hole Reservoir  Lower Hell Hole Dam  Rubicon River
Rubicon River (California)
The Rubicon River is a river in the Sierra Nevada of northern California, west of Lake Tahoe. It is a tributary of the Middle Fork American River, and is long and with a watershed of about . The river's headwaters are in the Crystal Range of the Sierra Nevada, within the Eldorado National Forest's...

 
Placer
Placer County, California
Placer County is a county located in both the Sacramento Valley and Sierra Nevada regions of the U.S. state of California, in what is known as the Gold Country. It stretches from the suburbs of Sacramento to Lake Tahoe and the Nevada border. Because of the expansion of the Greater Sacramento,...

 
Placer County Water Authority  1966 Rock-fill  410 125 208,400 257,100
Mammoth Pool Reservoir
Mammoth Pool Reservoir
Mammoth Pool Reservoir is a reservoir on the San Joaquin River in the Sierra Nevada, within the Sierra National Forest in California. It straddles the border of Fresno County and Madera County. It is about north-northeast of Fresno.-Hydroelectric power:...

 
Mammoth Pool Dam  San Joaquin River
San Joaquin River
The San Joaquin River is the largest river of Central California in the United States. At over long, the river starts in the high Sierra Nevada, and flows through a rich agricultural region known as the San Joaquin Valley before reaching Suisun Bay, San Francisco Bay, and the Pacific Ocean...

 
Fresno
Fresno County, California
Fresno County is a county located in the Central Valley of the U.S. state of California, south of Stockton and north of Bakersfield. As of the 2010 census, it is the tenth most populous county in California with a population of 930,450, and the sixth largest in size with an area of . The county...

 and Madera
Madera County, California
Madera County is a county of the U.S. state of California, located in the Central Valley and the Sierra Nevada north of Fresno County. It comprises the Madera-Chowchilla, CA Metropolitan Statistical Area. As of the 2010 census the population was 150,865...

 
Southern California Edison
Southern California Edison
Southern California Edison , the largest subsidiary of Edison International , is the primary electricity supply company for much of Southern California, USA. It provides 14 million people with electricity...

1960 Earth  406 124 123,000 152,000
Martis Creek Lake  Martis Creek Dam  Martis Creek  Nevada
Nevada County, California
Nevada County is a county located in the Sierra Nevada of California, in the Mother Lode country. As of 2010 its population was 98,764. The county seat is Nevada City.-History:Nevada County was created in 1851 from parts of Yuba County....

 
U.S. Army Corps of Engineers  1972 Earth  113 34 20,400 25,200
McCloud Reservoir  McCloud Dam McCloud River
McCloud River
The McCloud River is a river that flows east of and parallel to the Sacramento River, long, in northern California in the United States. It drains a scenic mountainous area of the Cascade Range north of Redding...

 
Shasta
Shasta County, California
Shasta County is a county located in the northern portion of the U.S. state of California. The county occupies the northern reaches of the Sacramento Valley, with portions extending into the southern reaches of the Cascade Range. As of the 2010 census, the population was 177,223, up from 163,256...

 
Pacific Gas and Electric  1965 Earth and rock  240 73 35,300 43,500
McKay's Point Reservoir  McKay's Point Diversion Dam Stanislaus River
Stanislaus River
The Stanislaus River in California is one of the largest tributaries of the San Joaquin River. The river is long and has north, middle and south forks...

, North Fork
Calaveras
Calaveras County, California
Calaveras County is a county located in the Gold Country of the U.S. state of California. Calaveras is the Spanish word for skulls; the county was reportedly named for the remains of Native Americans discovered by the Spanish explorer Captain Gabriel Moraga. As of the 2010 census, the county had a...

 
Calaveras County Water District  1989 Constant radius arch  233 71 2,100 2,600
Millerton Lake
Millerton Lake
Millerton Lake is an artificial lake near the town of Friant about north of downtown Fresno. The reservoir was created by the construction of Friant Dam on the San Joaquin River which with the lake serves as much of the county line between Fresno County to the south and Madera County to the...

 
Friant Dam
Friant Dam
Friant Dam is a concrete gravity dam on the upper San Joaquin River in the Sierra Nevada foothills of Fresno County and Madera County near the town of Friant. The dam, completed in 1942, forms Millerton Lake and was built by the U.S. Bureau of Reclamation, which owns and operates the dam. The lake...

 
San Joaquin River
San Joaquin River
The San Joaquin River is the largest river of Central California in the United States. At over long, the river starts in the high Sierra Nevada, and flows through a rich agricultural region known as the San Joaquin Valley before reaching Suisun Bay, San Francisco Bay, and the Pacific Ocean...

 
Fresno
Fresno County, California
Fresno County is a county located in the Central Valley of the U.S. state of California, south of Stockton and north of Bakersfield. As of the 2010 census, it is the tenth most populous county in California with a population of 930,450, and the sixth largest in size with an area of . The county...

 and Madera
Madera County, California
Madera County is a county of the U.S. state of California, located in the Central Valley and the Sierra Nevada north of Fresno County. It comprises the Madera-Chowchilla, CA Metropolitan Statistical Area. As of the 2010 census the population was 150,865...

 
U.S. Bureau of Reclamation  1942 Gravity  299 91 520,500 642,000
Morris Reservoir
Morris reservoir
Morris Reservoir is located in the San Gabriel Mountains about 5 miles north of the city of Azusa along California State Route 39. Morris Reservoir is below San Gabriel Dam. The mean elevation is about 1100 ft...

 
Morris Dam
Morris Dam
Morris Dam is a concrete gravity dam across the San Gabriel River in the U.S. state of California. The dam was built in the 1930s as a water supply facility for the city of Pasadena, but is now mostly utilized for flood control and flow regulation for groundwater recharge...

San Gabriel River
San Gabriel River (California)
The San Gabriel River flows through southern Los Angeles County, California in the United States. Its main stem is about long, while its farthest tributaries extend almost altogether...

 
Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
Los Angeles County Department of Public Works
Los Angeles County Department of Public Works
The Los Angeles County Department of Public Works is responsible for the construction and operation of Los Angeles County's roads, building safety, sewerage, and flood control...

 
1935 Gravity  245 75 27,500 33,900
New Bullards Bar Reservoir
New Bullards Bar Reservoir
New Bullards Bar Reservoir is a large reservoir in northeastern Yuba County, California, at an elevation of in the Tahoe National Forest and about 30 miles northeast of Yuba City, California. The reservoir is formed by New Bullards Bar Dam on the North Fork of the Yuba River, a tributary of the...

 
New Bullards Bar Dam
New Bullards Bar Dam
New Bullards Bar Dam is a dam in California on the North Yuba River and forms the New Bullards Bar Reservoir, which has a capacity of . It is located near the town of Dobbins in Yuba County. The dam is operated by the Yuba County Water Agency for irrigation, drinking water and hydroelectric power...

 
Yuba River
Yuba River
The Yuba River is a tributary of the Feather River in the Sacramento Valley of the U.S. state of California. It is one of the Feather's most important branches, providing about a third of its flow. The main stem of the river is about long, and its headwaters are split into North, Middle and South...

, North Fork
Yuba
Yuba County, California
Yuba County is a county located in the U.S. state of California's Central Valley, north of Sacramento, along the Feather River. As of the 2010 census, its population was 72,155. The county seat is Marysville. Yuba County is part of the Greater Sacramento area.-History:Yuba County was one of the...

 
Yuba County Water Authority  1970 Variable radius arch  635 194 969,600 1,196,000
New Hogan Lake
New Hogan Lake
New Hogan Lake is an artificial lake in the foothills of the Sierra Nevada in Calaveras County, California, about northeast of Stockton. It is formed by New Hogan Dam on the Calaveras River, whose North and South forks combine just upstream of the lake, and has a capacity of . The lake has a...

 
New Hogan Dam
New Hogan Dam
New Hogan Dam is an embankment dam on the Calaveras River, a tributary of the San Joaquin River in central California. The dam lies east of Rancho Calaveras and impounds New Hogan Lake in the foothills of the Sierra Nevada. Built by the U.S. Army Corps of Engineers , the -high dam was completed in...

 
Calaveras River
Calaveras River
The Calaveras River is a river in the California Central Valley. It flows roughly southwest for from the confluence of its north and south forks in Calaveras County to its confluence with the San Joaquin River just west of the city of Stockton....

 
Calaveras
Calaveras County, California
Calaveras County is a county located in the Gold Country of the U.S. state of California. Calaveras is the Spanish word for skulls; the county was reportedly named for the remains of Native Americans discovered by the Spanish explorer Captain Gabriel Moraga. As of the 2010 census, the county had a...

 
U.S. Army Corps of Engineers  1963 Earth  210 64 317,000 391,000
New Lake  New Lake Dam  Little Bear Creek  San Bernardino
San Bernardino County, California
San Bernardino County is a county in the U.S. state of California. As of the 2010 census, the population was 2,035,210, up from 1,709,434 as of the 2000 census...

 
San Bernardino County
San Bernardino County, California
San Bernardino County is a county in the U.S. state of California. As of the 2010 census, the population was 2,035,210, up from 1,709,434 as of the 2000 census...

 
1976 Earth  225 69 1,970 2,430
New Melones Reservoir  New Melones Dam
New Melones Dam
New Melones Dam is an earth and rock filled dam across the Stanislaus River creating New Melones Lake. Situated between Calaveras and Tuolumne County, California in the Sierra Nevada foothills near Jamestown, the dam was completed in 1979 replacing the old Melones Dam.-Background:The dam was...

 
Stanislaus River
Stanislaus River
The Stanislaus River in California is one of the largest tributaries of the San Joaquin River. The river is long and has north, middle and south forks...

 
Calaveras
Calaveras County, California
Calaveras County is a county located in the Gold Country of the U.S. state of California. Calaveras is the Spanish word for skulls; the county was reportedly named for the remains of Native Americans discovered by the Spanish explorer Captain Gabriel Moraga. As of the 2010 census, the county had a...

 
U.S. Bureau of Reclamation  1979 Rock-fill 578 176 2,400,000 2,960,000
New Spicer Meadow Reservoir
New Spicer Meadow Reservoir
New Spicer Meadow Reservoir is a reservoir in Stanislaus National Forest in the Sierra Nevada, in Tuolumne County, near the Alpine County line, at an elevation of . The reservoir is formed by New Spicer Meadow Dam on Highland Creek, a tributary of the Stanislaus River. The tall dam is composed of...

 
New Spicer Meadow Dam Highland Creek  Tuolumne
Tuolumne County, California
Tuolumne County is a county in the Sierra Nevada of the U.S. state of California. The northern half of Yosemite National Park is located in the eastern part of the county. As of the 2010 census, the population was 55,365, up from 54,501 at the 2000 census...

 and Alpine
Alpine County, California
Alpine County is the smallest county, by population, in the U.S. state of California. As of 2010, it had a population of 1,175, all rural. There are no incorporated cities in the county. The county seat is Markleeville...

 
Calaveras County Water District  1989 Rock-fill  262 80 189,000 233,000
Olivenhain Reservoir  Olivenhain Dam
Olivenhain Dam
The Olivenhain Dam is a gravity dam near Encinitas, California. The dam was constructed between 1998 and 2003 as part of San Diego's Emergency Storage Project with the primary purpose of water supply for municipal use. It does not sit on a river or stream but is supplied with water by a system of...

 
Escondido Creek Tributary San Diego
San Diego County, California
San Diego County is a large county located in the southwestern corner of the US state of California. Hence, San Diego County is also located in the southwestern corner of the 48 contiguous United States. Its county seat and largest city is San Diego. Its population was about 2,813,835 in the 2000...

 
San Diego County Water Authority  2003 Gravity  309 94 24,900 30,700
Pacoima Reservoir  Pacoima Dam
Pacoima Dam
Pacoima Dam is a variable radius arch dam on Pacoima Creek in the San Gabriel Mountains, in Los Angeles County, U.S. state of California....

 
Pacoima Creek  Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
Los Angeles County Department of Public Works
Los Angeles County Department of Public Works
The Los Angeles County Department of Public Works is responsible for the construction and operation of Los Angeles County's roads, building safety, sewerage, and flood control...

 
1929 Variable radius arch  365 111 3,777 4,659
Pardee Lake  Pardee Dam
Pardee Dam
Pardee Dam is a -high structure across the Mokelumne River which marks the boundary between Amador and Calaveras Counties, in the foothills of the Sierra Nevada approximately about northeast of Stockton....

 
Mokelumne River
Mokelumne River
The Mokelumne River is a river in Northern California. The Upper Mokelumne River originates in the Sierra Nevada mountain range and flows into Pardee Reservoir and then Camanche Reservoir in the Sierra foothills. The Lower Mokelumne River refers to the portion of the river below Camanche Dam...

 
Amador
Amador County, California
Amador County is a county located in the Sierra Nevada of the U.S. state of California. As of the 2010 census, the population was 38,091. The county seat is Jackson.Amador County bills itself as "The Heart of the Mother Lode" and lies within the Gold Country...

 
East Bay Municipal Utility District
East Bay Municipal Utility District
East Bay Municipal Utility District , colloquially referred to as "East Bay Mud", provides water and sewage treatment for customers in portions of Alameda County and Contra Costa County in California, on the eastern side of San Francisco Bay, including the cities of Richmond, El Cerrito, Hercules,...

 
1929 Gravity  345 105 179,950 221,960
Pine Flat Lake
Pine Flat Lake
Pine Flat Lake is an artificial lake in the Sierra Nevada foothills of eastern Fresno County, California and provides the western north-south border to the Sierra- and Sequoia National Forests, about east of Fresno....

 
Pine Flat Dam
Pine Flat Dam
Pine Flat Dam is on the Kings River in the San Joaquin Valley, near Piedra in Fresno County, California, and forms Pine Flat Lake. It is a concrete gravity dam. The dam is owned and operated by the U.S. Army Corps of Engineers. Construction of the dam began in 1949 and was completed in 1954...

 
Kings River
Kings River (California)
The Kings River is a major river of south-central California. About long, it drains an area of the high western Sierra Nevada and the Central Valley. A large alluvial fan has formed where the river's gradient decreases in the Central Valley so the river divides into distributaries...

 
Fresno
Fresno County, California
Fresno County is a county located in the Central Valley of the U.S. state of California, south of Stockton and north of Bakersfield. As of the 2010 census, it is the tenth most populous county in California with a population of 930,450, and the sixth largest in size with an area of . The county...

 
U.S. Army Corps of Engineers  1954 Gravity  440 134 1,000,000 1,230,000
Pit 7 Reservoir  Pit 7 Dam
Pit 7 Dam
Pit 7 Dam is a run-of-the-river hydroelectric dam across the Pit River in northern California. Located just upstream of Shasta Lake, it is a concrete arch-gravity structure and its powerhouse has a capacity of 110 MW. The dam is owned by the Pacific Gas and Electric Company....

 
Pit River
Pit River
The Pit River is a major river draining from northeastern California into the state's Central Valley. The Pit, the Klamath and the Columbia are the only three rivers in the U.S...

 
Shasta
Shasta County, California
Shasta County is a county located in the northern portion of the U.S. state of California. The county occupies the northern reaches of the Sacramento Valley, with portions extending into the southern reaches of the Cascade Range. As of the 2010 census, the population was 177,223, up from 163,256...

 
Pacific Gas and Electric  1965 Gravity  230 70 34,000 42,000
Prado Reservoir
Prado Reservoir
Prado Reservoir is a reservoir in northwestern Riverside County and southwestern San Bernardino County, a couple of miles west of the city of Corona, in the U.S. state of California. The reservoir has a capacity of and is formed by Prado Dam on the Santa Ana River. The dam is composed of...

 
Prado Dam
Prado Dam
Prado Dam is an earth-fill dam across the Santa Ana River at the Chino Hills near Corona, California in Riverside County with the resulting impounded water creating Prado Flood Control Basin reservoir. The U.S. Army Corps of Engineers built the dam in Lower Santa Ana River Canyon...

 
Santa Ana River
Santa Ana River
The Santa Ana River is the largest river of Southern California in the United States. Its drainage basin spans four counties. It rises in the San Bernardino Mountains and flows past the cities of San Bernardino and Riverside, before cutting through the northern tip of the Santa Ana Mountains and...

 
Riverside
Riverside County, California
Riverside County is a county in the U.S. state of California. One of 58 California counties, it covers in the southern part of the state, and stretches from Orange County to the Colorado River, which forms the state border with Arizona. The county derives its name from the city of Riverside,...

 and San Bernardino
San Bernardino County, California
San Bernardino County is a county in the U.S. state of California. As of the 2010 census, the population was 2,035,210, up from 1,709,434 as of the 2000 census...

 
U.S. Army Corps of Engineers  1941 Rock-fill  106 32 314,400 387,800
Pyramid Lake
Pyramid Lake (California)
Pyramid Lake is an artificial lake formed by Pyramid Dam on Piru Creek, near Castaic, California. The reservoir lies on the border between the Angeles National Forest and the Los Padres National Forest in the northwestern portion of Los Angeles County....

 
Pyramid Dam
Pyramid Dam
Pyramid Dam is a dam in the West Branch of the California Aqueduct. Its reservoir, Pyramid Lake, stores water for Ventura County and Los Angeles County. The dam and lake are located in northern Los Angeles County, north of Castaic and south of Gorman...

 
Piru Creek
Piru Creek
Piru Creek is a large stream in northern Los Angeles County and eastern Ventura County, California. It is a tributary of the Santa Clara River, the largest stream system in Southern California that is still relatively natural. It drains an area of about and is about long. The creek is the Santa...

 
Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
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...

 
1973 Earth and rock 386 118 180,000 222,000
Rollins Reservoir  Rollins Dam Bear River
Bear River (Feather River tributary)
The Bear River is a tributary of the Feather River in the Sierra Nevada, winding through four California counties: Yuba, Sutter, Placer, and Nevada....

 
Nevada
Nevada County, California
Nevada County is a county located in the Sierra Nevada of California, in the Mother Lode country. As of 2010 its population was 98,764. The county seat is Nevada City.-History:Nevada County was created in 1851 from parts of Yuba County....

 
Nevada Irrigation District
Nevada Irrigation District
Nevada Irrigation District is an agency in Northern California that supplies water for much of Nevada County and portions of Placer and Yuba Counties. The water is used for irrigation, municipal and domestic purposes...

 
1965 Earth and rock  242 74 66,000 81,000
Salt Springs Reservoir
Salt Springs Reservoir
Salt Springs Reservoir is a reservoir in the eastern portions of Amador County and Calaveras County of California in the Sierra Nevada about east-northeast of Jackson. The reservoir is in the El Dorado National Forest at an elevation of . The reservoir is formed by Salt Springs Dam on the North...

 
Salt Springs Dam  Mokelumne River
Mokelumne River
The Mokelumne River is a river in Northern California. The Upper Mokelumne River originates in the Sierra Nevada mountain range and flows into Pardee Reservoir and then Camanche Reservoir in the Sierra foothills. The Lower Mokelumne River refers to the portion of the river below Camanche Dam...

, North Fork
Amador
Amador County, California
Amador County is a county located in the Sierra Nevada of the U.S. state of California. As of the 2010 census, the population was 38,091. The county seat is Jackson.Amador County bills itself as "The Heart of the Mother Lode" and lies within the Gold Country...

 
Pacific Gas and Electric  1931 Rock-fill  332 101 141,900 175,000
San Antonio Reservoir
San Antonio Reservoir (Alameda County)
San Antonio Reservoir is located in Alameda County, California, about three miles east-southeast of Sunol. It was built in 1964 by the City and County of San Francisco. Formed by damming San Antonio Creek not far above where it flows into Alameda Creek, its purpose is to store water from the Hetch...

 
James H. Turner Dam  San Antonio Creek
San Antonio Creek
San Antonio Creek may refer to:* San Antonio Creek , a tributary of the Petaluma River* San Antonio Creek , in Santa Barbara County, California* Estero de San Antonio, a stream flowing into Bodega Bay...

 
Alameda
Alameda County, California
Alameda County is a county in the U.S. state of California. It occupies most of the East Bay region of the San Francisco Bay Area. As of the 2010 census it had a population of 1,510,271, making it the 7th most populous county in the state...

 
City and County of San Francisco
San Francisco, California
San Francisco , officially the City and County of San Francisco, is the financial, cultural, and transportation center of the San Francisco Bay Area, a region of 7.15 million people which includes San Jose and Oakland...

 
1964 Earth  193 59 50,500 62,300
San Antonio Reservoir  San Antonio Dam  San Antonio Creek
San Antonio Creek
San Antonio Creek may refer to:* San Antonio Creek , a tributary of the Petaluma River* San Antonio Creek , in Santa Barbara County, California* Estero de San Antonio, a stream flowing into Bodega Bay...

 
San Bernardino
San Bernardino County, California
San Bernardino County is a county in the U.S. state of California. As of the 2010 census, the population was 2,035,210, up from 1,709,434 as of the 2000 census...

 
U.S. Army Corps of Engineers  1956 Earth  160 49 7,582 9,352
San Gabriel Reservoir  San Gabriel Dam
San Gabriel Dam
San Gabriel Dam is a rockfill dam on the San Gabriel River in the San Gabriel Mountains, in Los Angeles County, California, within the Angeles National Forest...

 No. 1
San Gabriel River
San Gabriel River (California)
The San Gabriel River flows through southern Los Angeles County, California in the United States. Its main stem is about long, while its farthest tributaries extend almost altogether...

 
Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
Los Angeles County Department of Public Works
Los Angeles County Department of Public Works
The Los Angeles County Department of Public Works is responsible for the construction and operation of Los Angeles County's roads, building safety, sewerage, and flood control...

 
1938 Earth and rock 320 98 44,183 54,499
San Joaquin Reservoir  San Joaquin Reservoir Dam  Bonita Creek Tributary Orange
Orange County, California
Orange County is a county in the U.S. state of California. Its county seat is Santa Ana. As of the 2010 census, its population was 3,010,232, up from 2,846,293 at the 2000 census, making it the third most populous county in California, behind Los Angeles County and San Diego County...

 
Irvine Ranch Water District
Irvine Ranch Water District
Irvine Ranch Water District is a California Special District formed in 1961 and incorporated under the . IRWD headquarters are located in Irvine, California....

 
1966 Earth  224 68 3,036 3,745
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...

 
B.F. Sisk Dam (AKA San Luis Dam
San Luis Dam
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 tall and was completed...

)
San Luis Creek
San Luis Creek (California)
San Luis Creek, originally Arroyo de San Luis Gonzaga, is a stream in Merced County, California. Its source is located in Merced County, about 1000 ft. northwest of 3448 ft. high Mariposa Peak, on the Merced County - San Benito County boundry and 7.4 miles south of Pacheco Pass...

 
Merced
Merced County, California
Merced County , is a county located in the Central Valley of the U.S. state of California, north of Fresno and southeast of San Jose. As of the 2010 census, the population was 255,793, up from 210,554 at the 2000 census. The county seat is Merced...

 
U.S. Bureau of Reclamation  1967 Earth  305 93 2,041,000 2,518,000
San Vicente Reservoir
San Vicente Reservoir
San Vicente Reservoir is a reservoir created by the San Vicente Dam in the Cleveland National Forest of San Diego County, California, approximately 7 km north of Lakeside off of California State Route 67 in the Laguna Mountains.-Description:...

 
San Vicente Dam
San Vicente Dam
The San Vicente Dam is a concrete gravity dam on San Vicente Creek near Lakeside and 25 km northeast of San Diego, California. The dam was built between 1941 and 1943 and created San Vicente Reservoir for the purpose of municipal water storage, flood control and recreation. Although the...

 
San Vicente Creek
San Vicente Creek (San Diego County)
San Vicente Creek is a stream in San Diego County, California. It rises east of Ramona and flows southwest to the San Vicente Reservoir and subsequently its confluence with the San Diego River just north of Lakeside. Its West Branch flows from the west until it reaches the San Vicente Reservoir....

 
San Diego
San Diego County, California
San Diego County is a large county located in the southwestern corner of the US state of California. Hence, San Diego County is also located in the southwestern corner of the 48 contiguous United States. Its county seat and largest city is San Diego. Its population was about 2,813,835 in the 2000...

 
San Diego City
San Diego, California
San Diego is the eighth-largest city in the United States and second-largest city in California. The city is located on the coast of the Pacific Ocean in Southern California, immediately adjacent to the Mexican border. The birthplace of California, San Diego is known for its mild year-round...

 
1943 Gravity  203 62 90,230 111,300
Santa Anita Reservoir  Big Santa Anita Dam  Rio Hondo
Rio Hondo (California)
The Rio Hondo is a tributary of the Los Angeles River in Los Angeles County, California, approximately long. As a named river, it begins in Irwindale and flows southwest to its confluence in South Gate, passing through several cities...

 Tributary
Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
Los Angeles County Department of Public Works
Los Angeles County Department of Public Works
The Los Angeles County Department of Public Works is responsible for the construction and operation of Los Angeles County's roads, building safety, sewerage, and flood control...

 
1927 Variable radius arch  225 69 858 1,058
Santa Fe Reservoir  Santa Fe Dam
Santa Fe Dam
Santa Fe Dam is a flood-control dam on the San Gabriel River located a few miles southwest of Azusa in Los Angeles County, California. For most of the year, the -high dam and its reservoir lie empty, but can hold more than of water during major storms...

 
San Gabriel River
San Gabriel River (California)
The San Gabriel River flows through southern Los Angeles County, California in the United States. Its main stem is about long, while its farthest tributaries extend almost altogether...

 
Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
U.S. Army Corps of Engineers  1947 Earth  92 28 30,887 38,098
Santa Rosa Creek Reservoir
Santa Rosa Creek Reservoir
Santa Rosa Creek Reservoir is a reservoir in Spring Lake Regional Park in the city of Santa Rosa, California, U.S.A.. It is impounded by an earthen dam built in 1963 and owned by the Sonoma County Water Agency.-See also:*Lake Ralphine...

 
Santa Rosa Creek Dam  Santa Rosa Creek
Santa Rosa Creek
Santa Rosa Creek is a 22 mile long stream in Sonoma County, California which rises on Hood Mountain and discharges to the Laguna de Santa Rosa by way of the Santa Rosa Flood Control Channel...

 tributary
Sonoma
Sonoma County, California
Sonoma County, located on the northern coast of the U.S. state of California, is the largest and northernmost of the nine San Francisco Bay Area counties. Its population at the 2010 census was 483,878. Its largest city and county seat is Santa Rosa....

 
Sonoma County Water Agency
Sonoma County Water Agency
The Sonoma County Water Agency is the government agency responsible for managing the water resources of Sonoma County, California...

 
1963 Earth  37 11 3,550 4,379
Sepulveda Reservoir  Sepulveda Dam
Sepulveda Dam
Located in Los Angeles, California, the Sepulveda Dam is a project of the U.S. Army Corps of Engineers, built in 1941 to withhold winter flood waters along the Los Angeles River...

Los Angeles River
Los Angeles River
The Los Angeles River is a river that starts in the San Fernando Valley, in the Simi Hills and Santa Susana Mountains, and flows through Los Angeles County, California, from Canoga Park in the western end of the San Fernando Valley, nearly southeast to its mouth in Long Beach...

 
Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
U.S. Army Corps of Engineers  1941 Earth  57 17 17,425 21,493
Seven Oaks Reservoir
Seven Oaks Reservoir
Seven Oaks Reservoir is a reservoir on the Santa Ana River in San Bernardino County, California, about northeast of the city of Redlands. The reservoir is formed by Seven Oaks Dam, which was completed in 1999....

 
Seven Oaks Dam
Seven Oaks Dam
The Seven Oaks Dam is located on the Santa Ana River, 4 miles northeast of Redlands, California. It was constructed by the United States Army Corps of Engineers as a flood control dam. The dam sits virtually on top of the San Andreas Fault and is designed to withstand a magnitude 8.0...

 
Santa Ana River
Santa Ana River
The Santa Ana River is the largest river of Southern California in the United States. Its drainage basin spans four counties. It rises in the San Bernardino Mountains and flows past the cities of San Bernardino and Riverside, before cutting through the northern tip of the Santa Ana Mountains and...

 
San Bernardino
San Bernardino County, California
San Bernardino County is a county in the U.S. state of California. As of the 2010 census, the population was 2,035,210, up from 1,709,434 as of the 2000 census...

 
U.S. Army Corps of Engineers  1999 Rock-fill 550 168 145,600 179,600
Shaver Lake
Shaver Lake
Shaver Lake is an artificial lake on Stevenson Creek, in the Sierra National Forest of Fresno County, California. At elevation , several smaller streams also flow into the lake and receives water from the underground tunnels of Southern California Edison's Big Creek hydroelectric project...

 
Shaver Dam  Stevenson Creek  Fresno
Fresno County, California
Fresno County is a county located in the Central Valley of the U.S. state of California, south of Stockton and north of Bakersfield. As of the 2010 census, it is the tenth most populous county in California with a population of 930,450, and the sixth largest in size with an area of . The county...

 
Southern California Edison
Southern California Edison
Southern California Edison , the largest subsidiary of Edison International , is the primary electricity supply company for much of Southern California, USA. It provides 14 million people with electricity...

 
1927 Gravity  180 55 135,283 166,869
Silver Lake Reservoir
Silver Lake Reservoir
The Silver Lake Reservoirs comprise two concrete-lined basins, Ivanhoe Reservoir and Silver Lake, divided by a spillway, in the Silver Lake community of Los Angeles, California.-History:...

 
Silver Lake Reservoir Dam  Manmade Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
Los Angeles Department of Water and Power
Los Angeles Department of Water and Power
The Los Angeles Department of Water and Power is the largest municipal utility in the United States, serving over four million residents. It was founded in 1902 to supply water and electricity to residents and businesses in Los Angeles and surrounding communities...

 
1907 Earth  ? ? ? ?
Silverwood Lake
Silverwood Lake
Silverwood Lake is a large reservoir in San Bernardino County, California, United States, located on the west fork of the Mojave River in the San Bernardino Mountains...

 
Cedar Springs Dam Mojave River
Mojave River
The Mojave River is an intermittent river in the eastern San Bernardino Mountains and Mojave Desert in San Bernardino County, California. The river is notable as most of its flow is underground, while its surface channels remain dry most of the time, with the exception of the headwaters and several...

, West Fork
San Bernardino
San Bernardino County, California
San Bernardino County is a county in the U.S. state of California. As of the 2010 census, the population was 2,035,210, up from 1,709,434 as of the 2000 census...

 
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...

 
1971 Earth and rock  236 72 73,000 90,050
Slab Creek Reservoir  Slab Creek Dam American River
American River
The American River is a California watercourse noted as the site of Sutter's Mill, northwest of Placerville, California, where gold was found in 1848, leading to the California Gold Rush...

, South Fork
El Dorado
El Dorado County, California
El Dorado County is a county located in the historic Gold Country in the Sierra Nevada Mountains and foothills of the U.S. state of California. The 2010 population was 181,058. The El Dorado county seat is in Placerville....

 
Sacramento Municipal Utility District  1967 Variable radius arch  233 71 16,600 20,500
Sly Creek Reservoir  Sly Creek Dam Lost Creek  Butte
Butte County, California
Butte County is a county located in the Central Valley of the US state of California, north of the state capital of Sacramento. As of the 2010 census, it had a population of 220,000. The county seat is Oroville. Butte County is the "Land of Natural Wealth and Beauty."Butte County is watered by the...

 
Oroville-Wyandotte Irrigation District  1961 Earth  271 83 65,050 80,240
Spaulding Lake  Spaulding Dam Yuba River
Yuba River
The Yuba River is a tributary of the Feather River in the Sacramento Valley of the U.S. state of California. It is one of the Feather's most important branches, providing about a third of its flow. The main stem of the river is about long, and its headwaters are split into North, Middle and South...

, South Fork
Nevada
Nevada County, California
Nevada County is a county located in the Sierra Nevada of California, in the Mother Lode country. As of 2010 its population was 98,764. The county seat is Nevada City.-History:Nevada County was created in 1851 from parts of Yuba County....

 
Pacific Gas and Electric  1913 Variable radius arch  275 84 74,773 92,231
Stampede Lake  Stampede Dam  Little Truckee River
Little Truckee River
The Little Truckee River is a river that is a tributary to its larger counterpart, the Truckee River, located in Nevada County in eastern California.-Description:...

 
Sierra
Sierra County, California
Sierra County is a county located in the Sierra Nevada of the U.S. state of California, northeast of Sacramento on the border with Nevada. As of the 2010 census the population was 3,240, down from 3,555 at the 2000 census. The county seat is Downieville....

 
U.S. Bureau of Reclamation  1970 Earth  226 69 226,500 279,400
Stevens Creek Reservoir
Stevens Creek Reservoir
Stevens Creek Reservoir is a reservoir located in the foothills of the Santa Cruz Mountains near Cupertino, California.Stevens Creek Dam, which impounds the lake, was approved for construction by voters in 1934 and completed in 1935. The dam's height was raised 10 feet in 1985, to its present...

 
Stevens Creek Dam  Stevens Creek  Santa Clara
Santa Clara County, California
Santa Clara County is a county located at the southern end of the San Francisco Bay Area in the U.S. state of California. As of 2010 it had a population of 1,781,642. The county seat is San Jose. The highly urbanized Santa Clara Valley within Santa Clara County is also known as Silicon Valley...

 
Santa Clara Valley Water District
Santa Clara Valley Water District
The Santa Clara Valley Water District provides stream stewardship, wholesale water supply and flood protection for Santa Clara County, California, in the southern San Francisco Bay Area. The district encompasses all of the county’s and serves the area’s 15 cities, 1.7 million residents and more...

 
1935 Earth  129 39 3,452 4,258
Thomas A. Edison Lake  Vermillion Valley Dam  Mono Creek  Fresno
Fresno County, California
Fresno County is a county located in the Central Valley of the U.S. state of California, south of Stockton and north of Bakersfield. As of the 2010 census, it is the tenth most populous county in California with a population of 930,450, and the sixth largest in size with an area of . The county...

 
Southern California Edison
Southern California Edison
Southern California Edison , the largest subsidiary of Edison International , is the primary electricity supply company for much of Southern California, USA. It provides 14 million people with electricity...

 
1954 Earth  167 51 125,000 154,000
Trinity Lake
Trinity Lake
Trinity Lake, previously called Clair Engle Lake, is a lake on the Trinity River formed by the Trinity Dam and located in Trinity County, California, The dam was built by the U.S. Bureau of Reclamation. The lake has a capacity of , making it one of the largest reservoirs in California. The lake's...

 
Trinity Dam
Trinity Dam
Trinity Dam is an earth dam on the Trinity River that forms Trinity Lake near Weaverville, California. Trinity Lake was previously called Clair Engle Lake. The earthfill dam was built by the U.S. Bureau of Reclamation. Construction was completed in 1962. Trinity Lake has a capacity of , making it...

 
Trinity River
Trinity River (California)
The Trinity River is the longest tributary of the Klamath River, approximately long, in northwestern California in the United States. It drains an area of the Coast Ranges, including the southern Klamath Mountains, northwest of the Sacramento Valley...

 
Trinity
Trinity County, California
Trinity County is a large, rugged and mountainous, heavily forested county located in the northwestern portion of the U.S. state of California, along the Trinity River and within the Salmon/Klamath Mountains. It covers an area of over two million acres , and as of the 2010 census its population...

 
U.S. Bureau of Reclamation  1962 Earth  457 139 2,447,650 3,019,130
Tulloch Reservoir  Tulloch Dam
Tulloch Dam
Tulloch Dam is a hydroelectric dam on the Stanislaus River in central California. The dam is part of the Stanislaus River Tri-Dam project owned by the Oakdale and San Joaquin irrigation districts and was completed in 1958. It serves mainly for irrigation purposes but also has a power station with a...

 
Stanislaus River
Stanislaus River
The Stanislaus River in California is one of the largest tributaries of the San Joaquin River. The river is long and has north, middle and south forks...

 
Calaveras
Calaveras County, California
Calaveras County is a county located in the Gold Country of the U.S. state of California. Calaveras is the Spanish word for skulls; the county was reportedly named for the remains of Native Americans discovered by the Spanish explorer Captain Gabriel Moraga. As of the 2010 census, the county had a...

 
Oakdale & South San Joaquin Irrigation Districts  1958 Gravity  205 62 68,400 84,400
Twitchell Reservoir
Twitchell Reservoir
Twitchell Reservoir is a reservoir in southern San Luis Obispo County and northern Santa Barbara County in California. The reservoir has a capacity of and is formed by Twitchell Dam on the Cuyama River about from its headwaters in the Chumash Wilderness Area and about from its confluence with...

 
Twitchell Dam  Cuyama River
Cuyama River
The Cuyama River is a river in southern San Luis Obispo County, northern Santa Barbara County, and northern Ventura County, in the U.S. state of California. It joins the Sisquoc River forming the Santa Maria River...

 
San Luis Obispo
San Luis Obispo County, California
San Luis Obispo County is a county located along the Pacific Ocean in the Central Coast of the U.S. state of California, between Los Angeles and the San Francisco Bay Area. As of the 2010 census its population was 269,637, up from 246,681 at the 2000 census...

 
U.S. Bureau of Reclamation  1958 Earth  211 64 240,000 296,035
Union Valley Reservoir
Union Valley Reservoir
Union Valley Reservoir is a reservoir in eastern El Dorado County, California, about northeast of Placerville. The lake is in El Dorado National Forest in the Sierra Nevada at an elevation of . It was formed in 1963 by the high earth and rockfill Union Valley Dam on Silver Creek, which is a...

 
Union Valley Dam  Silver Creek  El Dorado
El Dorado County, California
El Dorado County is a county located in the historic Gold Country in the Sierra Nevada Mountains and foothills of the U.S. state of California. The 2010 population was 181,058. The El Dorado county seat is in Placerville....

 
Sacramento Municipal Utility District  1963 Earth and rock 453 138 230,000 284,000
Unknown Big Creek 7 Dam  San Joaquin River
San Joaquin River
The San Joaquin River is the largest river of Central California in the United States. At over long, the river starts in the high Sierra Nevada, and flows through a rich agricultural region known as the San Joaquin Valley before reaching Suisun Bay, San Francisco Bay, and the Pacific Ocean...

 
Fresno
Fresno County, California
Fresno County is a county located in the Central Valley of the U.S. state of California, south of Stockton and north of Bakersfield. As of the 2010 census, it is the tenth most populous county in California with a population of 930,450, and the sixth largest in size with an area of . The county...

 
Southern California Edison
Southern California Edison
Southern California Edison , the largest subsidiary of Edison International , is the primary electricity supply company for much of Southern California, USA. It provides 14 million people with electricity...

 
1951 Gravity  233 71 35,000 43,000
Unknown Jamestown Mines Tailings Dam  Woods Creek Tributary Tuolumne
Tuolumne County, California
Tuolumne County is a county in the Sierra Nevada of the U.S. state of California. The northern half of Yosemite National Park is located in the eastern part of the county. As of the 2010 census, the population was 55,365, up from 54,501 at the 2000 census...

 
Tuolumne County  1994 Rock-fill  200 61 12,100 14,900
Unknown Mojave River Dam  Mojave River
Mojave River
The Mojave River is an intermittent river in the eastern San Bernardino Mountains and Mojave Desert in San Bernardino County, California. The river is notable as most of its flow is underground, while its surface channels remain dry most of the time, with the exception of the headwaters and several...

, West Fork
San Bernardino
San Bernardino County, California
San Bernardino County is a county in the U.S. state of California. As of the 2010 census, the population was 2,035,210, up from 1,709,434 as of the 2000 census...

 
U.S. Army Corps of Engineers  1971 Earth  204 62 89,700 110,600
Uvas Reservoir
Uvas Reservoir
Uvas Reservoir is a reservoir in Santa Clara County, California, U.S.A., created in 1957 by the construction of Uvas Dam across Uvas Creek.-See also:*List of lakes in California*List of lakes in the San Francisco Bay Area...

 
Uvas Dam  Uvas Creek
Uvas Creek
Uvas Creek is a mainly southward-flowing stream originating on Loma Prieta peak of the Santa Cruz Mountains, in Santa Clara County, California, United States. The creek descends through Uvas Canyon County Park into Uvas Reservoir, and upon passing U.S...

 
Santa Clara
Santa Clara County, California
Santa Clara County is a county located at the southern end of the San Francisco Bay Area in the U.S. state of California. As of 2010 it had a population of 1,781,642. The county seat is San Jose. The highly urbanized Santa Clara Valley within Santa Clara County is also known as Silicon Valley...

 
Santa Clara Valley Water District
Santa Clara Valley Water District
The Santa Clara Valley Water District provides stream stewardship, wholesale water supply and flood protection for Santa Clara County, California, in the southern San Francisco Bay Area. The district encompasses all of the county’s and serves the area’s 15 cities, 1.7 million residents and more...

 
1957 Earth and rock  105 32 9,935 12,255
Vail Lake
Vail Lake
Vail Lake is a large reservoir in western Riverside County, California, located on Temecula Creek in the Santa Margarita River watershed, approximately east of Temecula....

 
Vail Dam  Temecula Creek
Temecula Creek
Temecula Creek runs through southern Riverside County, California, USA, past the rural communities of the Temecula Valley along the State Route 79 corridor, such as Aguanga, and ending near the city of Temecula. The creek is filled with boulders, and is typically dry and sandy. It is a relatively...

 
Riverside
Riverside County, California
Riverside County is a county in the U.S. state of California. One of 58 California counties, it covers in the southern part of the state, and stretches from Orange County to the Colorado River, which forms the state border with Arizona. The county derives its name from the city of Riverside,...

 
Rancho California Water District  1949 Variable radius arch  152 46 50,000 61,500
Vasona Reservoir  Vasona Dam  Los Gatos Creek
Los Gatos Creek (Santa Clara County, California)
The Los Gatos Creek runs 24 miles in California through Santa Clara Valley Water District's Guadalupe Watershed from the Santa Cruz Mountains northward through the Santa Clara Valley until its confluence with the Guadalupe River in downtown San Jose...

 
Santa Clara
Santa Clara County, California
Santa Clara County is a county located at the southern end of the San Francisco Bay Area in the U.S. state of California. As of 2010 it had a population of 1,781,642. The county seat is San Jose. The highly urbanized Santa Clara Valley within Santa Clara County is also known as Silicon Valley...

 
Santa Clara Valley Water District
Santa Clara Valley Water District
The Santa Clara Valley Water District provides stream stewardship, wholesale water supply and flood protection for Santa Clara County, California, in the southern San Francisco Bay Area. The district encompasses all of the county’s and serves the area’s 15 cities, 1.7 million residents and more...

 
1935 Earth and rock 30 9 400 490
Whale Rock Reservoir
Whale Rock Reservoir
Whale Rock Reservoir is a reservoir near Cayucos in San Luis Obispo County, California. The reservoir was formed by the building of Whale Rock Dam on Old Creek by the Whale Rock Commission. It is a 193-foot tall earthfill dam that was completed in 1961. The reservoir has a capacity of . The...

 
Whale Rock Dam  Old Creek  San Luis Obispo
San Luis Obispo County, California
San Luis Obispo County is a county located along the Pacific Ocean in the Central Coast of the U.S. state of California, between Los Angeles and the San Francisco Bay Area. As of the 2010 census its population was 269,637, up from 246,681 at the 2000 census...

 
Whale Rock Commission  1960 Earth  193 59 40,662 50,156
Whiskeytown Lake
Whiskeytown Lake
Whiskeytown Lake is a lake in Shasta County in northwestern California, about west of Redding. The lake is in the Whiskeytown Unit of the Whiskeytown-Shasta-Trinity National Recreation Area. It has a capacity of and is formed by Whiskeytown Dam on Clear Creek...

 
Whiskeytown Dam Clear Creek  Shasta
Shasta County, California
Shasta County is a county located in the northern portion of the U.S. state of California. The county occupies the northern reaches of the Sacramento Valley, with portions extending into the southern reaches of the Cascade Range. As of the 2010 census, the population was 177,223, up from 163,256...

 
U.S. Bureau of Reclamation  1963 Earth  263 80 241,100 297,400
Whittier Narrows Reservoir  Whittier Narrows Dam
Whittier Narrows Dam
Whittier Narrows Dam is a dam on the San Gabriel River in Montebello, California. Built by the U.S. Army Corps of Engineers for flood control, it is a 17 m tall earth dam. Construction of the dam was completed in 1957. Its reservoir has a capacity of .-External links:*...

 
San Gabriel River
San Gabriel River (California)
The San Gabriel River flows through southern Los Angeles County, California in the United States. Its main stem is about long, while its farthest tributaries extend almost altogether...

 
Los Angeles
Los Angeles County, California
Los Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...

 
U.S. Army Corps of Engineers  1957 Earth  56 17 67,060 82,720


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