Trinity Dam

E62793

Trinity Dam is a major earthfill dam on the Trinity River in Northern California, forming Trinity Lake and providing water storage, hydroelectric power, and flood control as part of the state’s large federal water management system.


Statements (48)
Predicate Object
instanceOf earthfill dam
embankment dam
associatedWithRiverRestorationIssues Trinity River environmental flows
basinCountry United States
completedIn 1962
constructionBegan 1957
constructionFundedBy federal government of the United States
country United States
crestElevation approximately 2,405 feet above sea level
divertsWaterTo Sacramento River Basin
formsReservoir Trinity Lake
foundationType rock foundation
hasOutletWorks river outlet and powerplant intakes
hasPowerPlant Trinity Powerplant
height approximately 538 feet
heightFromFoundation approximately 538 feet
isMajorComponentOf federal water management system in California
length approximately 2,450 feet
locatedIn Trinity County, California
locatedInMountainRange Klamath Mountains region
locatedInRegion Northern California
locatedOnRiver Trinity River
managingAgency U.S. Department of the Interior
material earth and rockfill
namedReservoirAfter U.S. Senator Clair Engle
nearCity Lewiston, California
Weaverville, California
openedIn 1962
operatedBy United States Bureau of Reclamation
ownedBy United States Bureau of Reclamation
partOf Central Valley Project
partOfProject Trinity River Division of the Central Valley Project
powerPlantCapacity approximately 140 megawatts
providesFloodControlFor Trinity River
purpose flood control
hydroelectric power generation
irrigation water supply
municipal and industrial water supply
recreation support
water storage
reservoirAlsoKnownAs Clair Engle Lake NERFINISHED
reservoirName Trinity Lake NERFINISHED
reservoirSurfaceArea approximately 25,000 acres
reservoirTotalCapacity approximately 2,448,000 acre-feet
spillwayType gated overflow spillway
supportsRecreationOn Trinity Lake NERFINISHED
waterStoredUsedFor agricultural irrigation in Central Valley
urban water supply in Central Valley

Referenced by (1)
Subject (surface form when different) Predicate
Central Valley Project
includes

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