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 1,436

Dam NameHeight (ft)YearHazardCondition
Round Valley

Lassen County

451892SignificantSatisfactory
Round Valley

Butte County

291877HighUnsatisfactory
Round Mountain

Mendocino County

431964HighSatisfactory
Round Corral Dam (Blm)

Lassen County

131977LowNot Rated
Round Canyon Retarding Basin

Orange County

981994LowSatisfactory
Ross No. 2

Shasta County

291957SignificantSatisfactory
Ross No. 1

Shasta County

301957SignificantSatisfactory
Rossmoor Retarding Basin

Orange County

142002LowSatisfactory
Rossmoor No. 1

Orange County

361964HighSatisfactory
Ross

Calaveras County

441892LowSatisfactory
Rollins

Nevada County

2281965HighSatisfactory
Rodden Lake

Stanislaus County

401916LowSatisfactory
Rocky Oaks Dam

Los Angeles County

22HighNot Available
Rock Creek

Plumas County

1261950HighSatisfactory
Rock Creek

El Dorado County

351932LowSatisfactory
Rock Creek

Placer County

361913HighSatisfactory
Roberts

Modoc County

171905HighSatisfactory
Robert L. Matheson

Napa County

321954HighSatisfactory
Robert A Skinner

Riverside County

1091973HighSatisfactory
Robbs Peak

El Dorado County

501963LowSatisfactory
Riviera Reservoir

Los Angeles County

401962HighSatisfactory
Rio Bravo Diversion

Kern County

281989LowSatisfactory
Rio Bravo Canal

Kern County

161988SignificantSatisfactory
Rinconada Reservoir

Santa Clara County

401969HighSatisfactory
Righetti

San Luis Obispo County

831966HighSatisfactory
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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.