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 276300 of 455

Dam NameHeight (ft)YearHazardCondition
Hines Brothers

Modoc County

141955LowSatisfactory
Hillside Ranch

Sonoma County

601967LowSatisfactory
Hicks Canyon Retention Basin

Orange County

601997LowSatisfactory
Henry Jr.

San Diego County

331929LowSatisfactory
Hendricks Head

Butte County

151907LowSatisfactory
Hendricks

Mariposa County

331958LowSatisfactory
Hein

Calaveras County

161962LowSatisfactory
Heenan Lake

Alpine County

391929LowSatisfactory
Heath Reservoir

Lassen County

451965LowSatisfactory
Healdsburg Recreation

Sonoma County

151953LowFair
Headworks Reservoir West

Los Angeles County

322022LowSatisfactory
Headworks Reservoir East

Los Angeles County

322016LowSatisfactory
Hat Creek No. 2 Diversion

Shasta County

291943LowSatisfactory
Hansen Recreational Lake

Los Angeles County

501999LowSatisfactory
Hamilton

Glenn County

281967LowSatisfactory
Halls Meadows

Modoc County

131941LowSatisfactory
Grinding Rock

Tuolumne County

551979LowSatisfactory
Green Valley Lake

San Bernardino County

561925LowSatisfactory
Green Valley

Mariposa County

331957LowSatisfactory
Green Tank

Modoc County

81975LowNot Rated
Green Springs

Modoc County

91975LowNot Rated
Green Oaks #1

San Mateo County

391936LowSatisfactory
Graven

Modoc County

151917LowSatisfactory
Grass Lake

Plumas County

101893LowNot Rated
Granlees

Sacramento County

171921LowSatisfactory
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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.