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 10761100 of 1,436

Dam NameHeight (ft)YearHazardCondition
Eagle Rock

Los Angeles County

1131953HighSatisfactory
Eagle Ranch

San Luis Obispo County

551974HighSatisfactory
Eagle Canyon Debris Basin

Riverside County

602015HighSatisfactory
Eagle Canyon Canal Diversion

Tehama County

111910LowSatisfactory
Dyer

Alameda County

302011HighFair
Dwight Hammond

Siskiyou County

251959LowSatisfactory
Duvall

Napa County

301940HighSatisfactory
Dutch Flat Forebay

Nevada County

1051966LowSatisfactory
Dutch Flat Afterbay

Nevada County

1651965LowSatisfactory
Dutcher Creek

Sonoma County

431992HighSatisfactory
Dunsmuir Reservoir

Alameda County

431968HighSatisfactory
Dunn Ranch

Riverside County

441987LowSatisfactory
Duncan Creek Diversion

Placer County

321965LowSatisfactory
Duncan

Modoc County

191919LowSatisfactory
Dry Creek

Contra Costa County

301963HighSatisfactory
Dry Canyon

Los Angeles County

661912HighSatisfactory
Drum Forebay

Placer County

651913HighSatisfactory
Drum Afterbay

Placer County

1021968LowSatisfactory
Drinkwater

Los Angeles County

1051923SignificantSatisfactory
Doyle Reservoir

Plumas County

141907LowNot Rated
Dove Canyon

Orange County

881989HighPoor
Dos Pueblos

Santa Barbara County

781946HighSatisfactory
Dorris Dam

Modoc County

251930HighFair
Don Pedro Main

Tuolumne County

5851971HighSatisfactory
Donovan

Modoc County

281953SignificantSatisfactory
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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.