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 326350 of 455

Dam NameHeight (ft)YearHazardCondition
Poison Springs

Modoc County

431957LowSatisfactory
Pond 2b

Solano County

551975LowSatisfactory
Pond #5a

San Joaquin County

20LowNot Available
Pond #6

San Joaquin County

20LowNot Available
Pond #7

San Joaquin County

15LowNot Available
Ponderosa

Butte County

1601962LowSatisfactory
Pond K

Amador County

222006LowSatisfactory
Pond No. 2

Sonoma County

121952LowSatisfactory
Poore Lake Reservoir

Mono County

231900LowSatisfactory
Portal Forebay Main

Fresno County

651956LowSatisfactory
Preston Forebay

Amador County

401892LowSatisfactory
Pulgas Lake Dam

San Diego County

441953LowFair
Putah Diversion Dam

Yolo County

291957LowNot Available
Quartz

Tuolumne County

1041978LowSatisfactory
Rainbow Diversion Dam

Colusa County

541914LowNot Available
Reclaimed Water Reservoir

Shasta County

371995LowSatisfactory
Red Bluff Diversion Dike 2

Tehama County

151963LowNot Available
Reid

Calaveras County

321969LowSatisfactory
Renner Sibley Creek

Modoc County

281959LowSatisfactory
Reservoir M

Modoc County

131977LowNot Rated
Reservoir N

Modoc County

71977LowNot Rated
Reynolds Weir

Fresno County

131928LowSatisfactory
Richardson

Sonoma County

401974LowSatisfactory
Rickey

San Mateo County

641951LowSatisfactory
Ridgewood

Mendocino County

441929LowSatisfactory
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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.