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 676700 of 1,436

Dam NameHeight (ft)YearHazardCondition
Lake Francis

Yuba County

792000HighSatisfactory
Lake Frey

Solano County

831894HighFair
Lake Gregory

San Bernardino County

901938HighSatisfactory
Lake Helen

Sonoma County

391966HighPoor
Lake Hemet

Riverside County

1351895HighSatisfactory
Lake Herman

Solano County

511905HighSatisfactory
Lake Hodges

San Diego County

1311918HighUnsatisfactory
Lake Jane

Madera County

371961LowSatisfactory
Lake La Verne

Napa County

501956SignificantSatisfactory
Lake Leavitt

Lassen County

171891SignificantSatisfactory
Lake Leticia

Napa County

491960HighSatisfactory
Lake Los Carneros

Santa Barbara County

311932HighSatisfactory
Lake Loveland

San Diego County

2031945HighSatisfactory
Lake Lucerne

San Mateo County

211923LowSatisfactory
Lake Madigan

Solano County

891908HighSatisfactory
Lake Madrone

Butte County

371931HighSatisfactory
Lake Mamie

Mono County

61968SignificantNot Rated
Lake Marie

Napa County

601908HighSatisfactory
Lake Mary

Mono County

101934HighNot Rated
Lake Mary

Placer County

221926LowSatisfactory
Lake Mission Viejo

Orange County

1231976HighSatisfactory
Lake O'Neill Dam

San Diego County

171883HighFair
Lake Orinda

Contra Costa County

451935HighSatisfactory
Lakeport

Lake County

511980HighSatisfactory
Lake Ralphine

Sonoma County

351882HighSatisfactory
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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.