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 176200 of 1,436

Dam NameHeight (ft)YearHazardCondition
Sulphur Creek

Orange County

421966HighSatisfactory
Sugar Pine

Placer County

2511981HighSatisfactory
Straza

El Dorado County

621971LowSatisfactory
Strawberry

Tuolumne County

1431916HighFair
Stough Debris Basin

Los Angeles County

461961HighSatisfactory
Stony Gorge Dam

Glenn County

1391928HighNot Available
Stone Canyon

Los Angeles County

1881924HighSatisfactory
Stockton Creek

Mariposa County

951950HighSatisfactory
Stinson Weir

Fresno County

141910LowSatisfactory
St. Helena Lower

Napa County

441878HighPoor
Stewart Canyon Debris Basin

Ventura County

341963HighSatisfactory
Stevenson Ranch

Los Angeles County

542004HighSatisfactory
Stevens Creek

Santa Clara County

1321935HighFair
Stevenot

Calaveras County

701987HighSatisfactory
Steidlmayer #3

Sutter County

491961LowSatisfactory
Steamboat Lake

Siskiyou County

221968SignificantSatisfactory
Stanley A. Mahr Reservoir

San Diego County

791981HighSatisfactory
Stanislaus Forebay West

Tuolumne County

601908LowSatisfactory
Stanford Heights

San Francisco County

311928HighSatisfactory
Stampede Dike

Sierra County

901970HighNot Available
Spring Valley Ranch

Placer County

391958HighSatisfactory
Spring Valley

Lake County

371968HighSatisfactory
Spring Creek Debris Dam

Shasta County

1961963HighNot Available
Spring

Madera County

411971SignificantSatisfactory
Spooner

Lassen County

171906LowSatisfactory
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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.