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 476500 of 1,093

Dam NameHeight (ft)YearHazardCondition
Mabey Canyon

Riverside County

461974HighSatisfactory
Lytton

Sonoma County

341956HighSatisfactory
Lyons

Tuolumne County

1321930HighSatisfactory
Lundy Lake

Mono County

481911HighSatisfactory
Lowrey No. 1

Sonoma County

191954SignificantSatisfactory
Lower Van Norman Bypass

Los Angeles County

781970LowSatisfactory
Lower Twin Lake

Napa County

181985LowSatisfactory
Lower Sunset Debris Basin

Los Angeles County

861963HighSatisfactory
Lower Sunset

Alpine County

38LowSatisfactory
Lower Stehly

San Diego County

60HighSatisfactory
Lower Sardine Lake

Sierra County

171965LowSatisfactory
Lower San Fernando

Los Angeles County

1251918HighSatisfactory
Lower Rock Lake

Nevada County

111855LowSatisfactory
Lower Peters Canyon Retarding Basin

Orange County

521990HighSatisfactory
Lower Peak Lake Main

Placer County

311860HighSatisfactory
Lower Lindsey

Nevada County

161870LowSatisfactory
Lower Kinney Lake

Alpine County

401926LowSatisfactory
Lower Howell

Santa Clara County

391877SignificantSatisfactory
Lower Franklin No. 2

Los Angeles County

491982LowSatisfactory
Lower Franklin

Los Angeles County

1031922HighSatisfactory
Lower Feeley

Nevada County

191870LowSatisfactory
Lower Crystal Springs

San Mateo County

1491888HighSatisfactory
Lower Bear

Amador County

2451952HighSatisfactory
Lowe

Sonoma County

301959HighSatisfactory
Los Verjels

Yuba County

561915SignificantSatisfactory
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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.