Del Valle

Alameda County, California (near Livermore)

River/Stream: Arroyo Valle

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Earth
Height
222 ft
Dam Length
880 ft
Reservoir Storage
77,100 acre-ft
Year Completed
1968
Primary Purpose
Flood Risk Reduction
Owner Type
State
Max Discharge
47,000 cfs

Condition Assessment

SatisfactoryLast inspected: 2023-09-01

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
CA00043
State
California (CA)
Coordinates
37.61570, -121.74500
Age
58 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.