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 351375 of 821

Dam NameHeight (ft)YearHazardCondition
La Contenta

Calaveras County

432002HighSatisfactory
Lafayette

Contra Costa County

1321929HighFair
Lagunita

Sonoma County

491954HighSatisfactory
Lagunita

Santa Clara County

161900HighSatisfactory
Lake Ada Rose

Mendocino County

501964HighSatisfactory
Lake Almanor

Plumas County

1351927HighFair
Lake Alta

Placer County

221862HighFair
Lake Angela

Nevada County

281924HighSatisfactory
Lake Angela

Shasta County

241958HighSatisfactory
Lake Arthur

Placer County

441909HighSatisfactory
Lake Camille

Napa County

211880HighSatisfactory
Lake Chabot

Solano County

471870HighSatisfactory
Lake Combie

Nevada County

1001928HighFair
Lake County Sanitation District

Lake County

401972HighSatisfactory
Lake County Sanitation District 2

Lake County

771976HighSatisfactory
Lake Curry

Napa County

1071926HighPoor
Lake Cynthia

Napa County

201955HighSatisfactory
Lake Eleanor

Tuolumne County

611918HighSatisfactory
Lake Eleanor

Ventura County

371881HighSatisfactory
Lake Fordyce

Nevada County

1451873HighPoor
Lake Francis

Yuba County

792000HighSatisfactory
Lake Frey

Solano County

831894HighFair
Lake Gregory

San Bernardino County

901938HighSatisfactory
Lake Helen

Sonoma County

391966HighPoor
Lake Hemet

Riverside County

1351895HighSatisfactory
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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.