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 576600 of 1,436

Dam NameHeight (ft)YearHazardCondition
Independence

Sierra County

311939HighSatisfactory
Indian Creek

Alpine County

711967HighSatisfactory
Indian Creek

El Dorado County

361946HighSatisfactory
Indian Ole

Lassen County

261924HighSatisfactory
Indian Valley

Lake County

2251975HighFair
Ingals Swamp

Modoc County

231918LowSatisfactory
Ione Canal

Amador County

481962LowSatisfactory
Iron Canyon

Shasta County

2141965HighSatisfactory
Irrigation Reservoir

Kern County

221980HighSatisfactory
Isabella Dam

Kern County

1851953HighNot Available
Isabel Lake No. 1

Santa Clara County

231948LowSatisfactory
Isabel Lake No. 2

Santa Clara County

18LowSatisfactory
Island Weir

Kings County

131926LowSatisfactory
Iverson

Lassen County

451968LowSatisfactory
Jackson Creek

Amador County

1931965HighSatisfactory
Jackson Creek Spillway

Amador County

37HighSatisfactory
Jackson Lake

Nevada County

291943HighSatisfactory
Jackson Meadows

Nevada County

2051965HighSatisfactory
Jack'S Swamp Dam No. 2

Modoc County

121926LowSatisfactory
Jacobs Creek

El Dorado County

531948LowSatisfactory
James H. Turner

Alameda County

1931964HighSatisfactory
James J. Lenihan

Santa Clara County

2081953HighFair
James Montgomery

Shasta County

241869SignificantPoor
Jameson Vineyards

Napa County

41SignificantSatisfactory
James Porter

Modoc County

211928HighSatisfactory
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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.