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 251275 of 455

Dam NameHeight (ft)YearHazardCondition
Junge No. 3

Shasta County

431966LowSatisfactory
Junge No. 2

Shasta County

341965LowSatisfactory
J&T Cattle Company No. 2

Stanislaus County

141980LowFair
J&T Cattle Company No. 1

Stanislaus County

222013LowFair
Johnston

San Mateo County

311919LowSatisfactory
John Orr

Amador County

201959LowSatisfactory
John Carl Warnecke

Sonoma County

321974LowSatisfactory
Jayne'S Lake

Mendocino County

701985LowSatisfactory
Jamison Lake

Plumas County

151902LowNot Rated
Jacobs Creek

El Dorado County

531948LowSatisfactory
Jack'S Swamp Dam No. 2

Modoc County

121926LowSatisfactory
Iverson

Lassen County

451968LowSatisfactory
Island Weir

Kings County

131926LowSatisfactory
Isabel Lake No. 2

Santa Clara County

18LowSatisfactory
Isabel Lake No. 1

Santa Clara County

231948LowSatisfactory
Ione Canal

Amador County

481962LowSatisfactory
Ingals Swamp

Modoc County

231918LowSatisfactory
Ice Lakes

Placer County

121942LowSatisfactory
Hughes

Monterey County

501966LowPoor
Huffman Antelope

Modoc County

151922LowSatisfactory
Householder

Modoc County

121970LowNot Rated
Horse Lake

Lassen County

121912LowSatisfactory
Honcut Creek Ranch No. 1

Yuba County

191964LowSatisfactory
Holman

Calaveras County

1011976LowSatisfactory
Holbrook

Lassen County

241952LowSatisfactory
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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.