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 13261350 of 1,436

Dam NameHeight (ft)YearHazardCondition
Turner

San Diego County

1111971HighSatisfactory
Twain Harte

Tuolumne County

361928HighSatisfactory
Twin Lake

Alpine County

221903LowSatisfactory
Twitchell Dam

Santa Barbara County

2411958HighNot Available
Union Main

Alpine County

361910LowSatisfactory
Union Valley

El Dorado County

4551962HighSatisfactory
University Mound North Basin

San Francisco County

171885HighSatisfactory
University Mound South Basin

San Francisco County

611937HighSatisfactory
Upland Basin

San Bernardino County

202008HighSatisfactory
Upper 4s Ranch

San Diego County

281927LowSatisfactory
Upper Bear

Amador County

771900HighSatisfactory
Upper Biscar Dam (Blm)

Lassen County

132006LowNot Rated
Upper Blackwelder Dam

Yuba County

191955SignificantNot Available
Upper Blue Lake

Alpine County

311901HighSatisfactory
Upper Chiquita

Orange County

1772012HighSatisfactory
Upper Elder

Shasta County

26LowSatisfactory
Upper Feeley

Nevada County

231870LowSatisfactory
Upper Franklin Dam

Los Angeles County

401915SignificantNot Available
Upper Gorge

Mono County

441953LowSatisfactory
Upper Hollywood

Los Angeles County

871933LowSatisfactory
Upper Howell

Santa Clara County

361878SignificantSatisfactory
Upper Kinney Lake

Alpine County

26LowSatisfactory
Upper Letts

Colusa County

261958HighNot Rated
Upper Lindsey

Nevada County

81870LowSatisfactory
Upper Monarch Lake

Tulare County

221905LowSatisfactory
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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.