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 301325 of 1,436

Dam NameHeight (ft)YearHazardCondition
Davis No. 2

San Joaquin County

261955HighSatisfactory
Dawson Lake

Stanislaus County

221896LowSatisfactory
Day Creek Debris Basin

San Bernardino County

901988HighSatisfactory
Deadhorse Flat Reservoir

Modoc County

71920LowNot Rated
Dead Horse Reservoir

Modoc County

71931LowNot Rated
Debell

Santa Clara County

531952HighSatisfactory
Declez Retention

Riverside County

301984HighSatisfactory
Decoto Reservoir

Alameda County

331966HighSatisfactory
Deer Canyon Debris Basin

San Bernardino County

781980HighSatisfactory
Deer Creek

Contra Costa County

291963HighSatisfactory
Deer Creek

Napa County

401980LowSatisfactory
Deer Creek Diversion

Nevada County

921928HighSatisfactory
Deer Lake

Napa County

721958HighSatisfactory
Delta Pond

Sonoma County

271984SignificantSatisfactory
Del Valle

Alameda County

2221968HighSatisfactory
Demens Creek Debris Basin

San Bernardino County

351980HighSatisfactory
Dennis No. 2

Sonoma County

601997LowSatisfactory
De Sabla Forebay

Butte County

521962LowSatisfactory
Detention Pond A

Solano County

151989SignificantSatisfactory
Devil Canyon Second Afterbay

San Bernardino County

881995HighSatisfactory
Devils Canyon Dike #1

San Bernardino County

151934HighSatisfactory
Devils Gate

Los Angeles County

1081920HighSatisfactory
Diamond Valley Lake

Riverside County

2842000HighSatisfactory
Diamond Valley Lake Forebay

Riverside County

221999LowSatisfactory
Dick Week

Napa County

701955SignificantSatisfactory
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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.