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 11761200 of 1,436

Dam NameHeight (ft)YearHazardCondition
Copperopolis

Calaveras County

331905HighSatisfactory
Copper Cove

Calaveras County

421993LowSatisfactory
Copper Basin

San Bernardino County

1841938HighSatisfactory
Coon Camp

Lassen County

231900LowSatisfactory
Cook No. 2

Sonoma County

351961HighSatisfactory
Contra Loma Dike 2

Contra Costa County

251967LowNot Available
Conn Creek

Napa County

1251946HighFair
Concow

Butte County

941925HighSatisfactory
Conagra Aerated and Settling Ponds

Stanislaus County

15HighFair
Collett

Lassen County

401991SignificantSatisfactory
Coleman Forebay

Shasta County

201911LowPoor
Coleman

Monterey County

271965LowPoor
Cold Springs Reservoir #1

Lassen County

17LowFair
Coit

Santa Clara County

541956LowSatisfactory
Cogswell

Los Angeles County

2661935HighSatisfactory
Coen C-3

Sonoma County

971982LowSatisfactory
Codding Reservoir

Mendocino County

36LowFair
Coastways

San Mateo County

461951HighSatisfactory
C.L. Tilden Park

Contra Costa County

881938HighSatisfactory
Clover Valley

Placer County

351909LowSatisfactory
Cloverswale

Modoc County

211973LowSatisfactory
Cloak Lake

Siskiyou County

131955LowSatisfactory
Clifton Court Forebay

Contra Costa County

341970LowFair
Clementia

Sacramento County

331976SignificantSatisfactory
Clearwell Phase 2

Contra Costa County

301977LowSatisfactory
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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.