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 526550 of 1,436

Dam NameHeight (ft)YearHazardCondition
Harvey Place

Alpine County

721989HighSatisfactory
Hat Creek No. 2 Diversion

Shasta County

291943LowSatisfactory
Hawkins

San Benito County

721928SignificantFair
Haynes Reservoir

Shasta County

671965HighSatisfactory
Headworks Reservoir East

Los Angeles County

322016LowSatisfactory
Headworks Reservoir West

Los Angeles County

322022LowSatisfactory
Healdsburg Recreation

Sonoma County

151953LowFair
Heath Reservoir

Lassen County

451965LowSatisfactory
Heenan Lake

Alpine County

391929LowSatisfactory
Hein

Calaveras County

161962LowSatisfactory
Heitz

Napa County

871991HighSatisfactory
Hell Hole

Placer County

4101966HighFair
Henderson

Amador County

561923HighFair
Hendricks

Mariposa County

331958LowSatisfactory
Hendricks Head

Butte County

151907LowSatisfactory
Henne

Napa County

491959HighSatisfactory
Henry J. Mills No. 2

Riverside County

341996HighSatisfactory
Henry J. Mills Reservoir

Riverside County

231979HighSatisfactory
Henry Jr.

San Diego County

331929LowSatisfactory
Henshaw

San Diego County

1231923HighSatisfactory
Hernandez

San Benito County

1241962HighSatisfactory
Herring Creek Reservoir

Tuolumne County

161939SignificantNot Rated
Hestan Vineyards Dam

Napa County

21HighFair
Hickory Basin

San Bernardino County

192001SignificantSatisfactory
Hicks Canyon Retention Basin

Orange County

601997LowSatisfactory
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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.