Cogswell

Los Angeles County, California (near Azusa)

River/Stream: Wfk San Gabriel R

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Rockfill
Height
266 ft
Dam Length
585 ft
Reservoir Storage
8,969 acre-ft
Year Completed
1935
Primary Purpose
Flood Risk Reduction
Owner Type
Local Government
Max Discharge
—

Condition Assessment

SatisfactoryLast inspected: 2024-04-23

Hazard Classification: High — This describes the potential consequences of dam failure, not the likelihood of failure.

Condition Assessment: Satisfactory — This describes the current physical condition of the dam based on the most recent inspection.

Location

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Quick Stats

NID ID
CA00190
State
California (CA)
Coordinates
34.24410, -117.96490
Age
91 years

Nearby Dams

External Resources

Data sourced from the National Inventory of Dams (NID). Information may not reflect the most current status of this dam. Hazard classification reflects potential consequences of failure, not the likelihood of failure or the current condition.