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 2650 of 106

Dam NameHeight (ft)YearHazardCondition
Rattlesnake Canyon

Orange County

791959HighFair
Ralston Afterbay

Placer County

891966HighFair
Pyramid

Los Angeles County

4221974HighFair
Pulgas Lake Dam

San Diego County

441953LowFair
Pit No. 5 Open Conduit

Shasta County

711944HighFair
Pit No. 1 Forebay

Shasta County

471947HighFair
Patterson

Alameda County

391962HighFair
Patterson

Alameda County

1001962SignificantFair
Parish Camp Saddle

Butte County

361968HighFair
Newell

Santa Cruz County

1821960HighFair
Murray

San Diego County

1101918HighFair
Mt. Woodson

San Diego County

381958HighFair
Moccasin Lower

Tuolumne County

601930HighFair
Mill Pond

Mendocino County

331885LowFair
Mill Creek

Santa Cruz County

761889HighFair
Merced Falls

Merced County

431901HighFair
Mendocino Middle

Mendocino County

391908HighFair
Mcvicker Canyon Debris Basin

Riverside County

55HighFair
Mcswain

Mariposa County

971966HighFair
Mccloud

Shasta County

2551965HighFair
Lynch Canyon

Solano County

21HighFair
Lower Twin Lake

Mono County

161888HighFair
Lower Bucks Lake

Plumas County

991928HighFair
Lost Creek

Butte County

1221924HighFair
Lake Wohlford

San Diego County

1001924HighFair
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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.