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 76100 of 1,436

Dam NameHeight (ft)YearHazardCondition
Upper Sardine Lake

Sierra County

23LowSatisfactory
Upper San Fernando

Los Angeles County

821921LowSatisfactory
Upper Sand Creek Detention Basin

Contra Costa County

402014HighSatisfactory
Upper Salmon

Sierra County

131899SignificantNot Rated
Upper Rock Lake Main

Nevada County

171855LowSatisfactory
Upper Pond

San Mateo County

30SignificantNot Available
Upper Plaskett

Glenn County

281955LowNot Rated
Upper Peak Lake

Placer County

391850HighSatisfactory
Upper Pasture

Modoc County

15LowSatisfactory
Upper Otay

San Diego County

781901LowSatisfactory
Upper Oso

Orange County

1421979HighSatisfactory
Upper Monarch Lake

Tulare County

221905LowSatisfactory
Upper Lindsey

Nevada County

81870LowSatisfactory
Upper Letts

Colusa County

261958HighNot Rated
Upper Kinney Lake

Alpine County

26LowSatisfactory
Upper Howell

Santa Clara County

361878SignificantSatisfactory
Upper Hollywood

Los Angeles County

871933LowSatisfactory
Upper Gorge

Mono County

441953LowSatisfactory
Upper Franklin Dam

Los Angeles County

401915SignificantNot Available
Upper Feeley

Nevada County

231870LowSatisfactory
Upper Elder

Shasta County

26LowSatisfactory
Upper Chiquita

Orange County

1772012HighSatisfactory
Upper Blue Lake

Alpine County

311901HighSatisfactory
Upper Blackwelder Dam

Yuba County

191955SignificantNot Available
Upper Biscar Dam (Blm)

Lassen County

132006LowNot Rated
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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.