California Dams

1,436 dams tracked by the National Inventory of Dams

Total Dams

1,436

High Hazard

821

57.2%

Poor / Unsatisfactory

66

Average Age

77 yrs

Hazard Classification

High821 (57.2%)
Significant160 (11.1%)
Low455 (31.7%)

Condition Assessment

Satisfactory1,093 (76.1%)
Fair106 (7.4%)
Poor / Unsatisfactory66 (4.6%)
Not Rated171 (11.9%)

Federal

163

State

50

Local

322

Private

617

Poor Condition Dams

All Dams in California

Showing 776800 of 821

Dam NameHeight (ft)YearHazardCondition
Upper Chiquita

Orange County

1772012HighSatisfactory
Upper Letts

Colusa County

261958HighNot Rated
Upper Oso

Orange County

1421979HighSatisfactory
Upper Peak Lake

Placer County

391850HighSatisfactory
Upper Sand Creek Detention Basin

Contra Costa County

402014HighSatisfactory
Upper Stehly

San Diego County

291999HighSatisfactory
Upper Twin Lake

Mono County

141905HighFair
Upper Wilcox

Madera County

481930HighSatisfactory
Usibelli No. 2

Napa County

261973HighSatisfactory
Utica Main

Alpine County

591903HighSatisfactory
Uvas

Santa Clara County

1181957HighSatisfactory
Vail

Riverside County

1521949HighFair
Vasona Percolating

Santa Clara County

341935HighSatisfactory
Veeh

Orange County

371936HighSatisfactory
Vermilion Valley

Fresno County

1651954HighPoor
Veterans Home

Napa County

471908HighFair
Villa Park

Orange County

1181963HighSatisfactory
Virginia Ranch

Yuba County

1721963HighSatisfactory
Vista Del Mar Detention Basin

Contra Costa County

422011HighSatisfactory
Volo Mining Company

El Dorado County

351958HighSatisfactory
Vonsen

Marin County

351951HighSatisfactory
Walnut Canyon

Orange County

1871968HighSatisfactory
Ward Creek

Alameda County

711963HighSatisfactory
Warm Springs Dam

Sonoma County

3561983HighNot Available
Warren H. Brock Reservoir Dikes

Imperial County

212010HighNot Available
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.