R. W. Matthews

Trinity County, California (near Mad River)

River/Stream: Mad River

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Earth
Height
150 ft
Dam Length
630 ft
Reservoir Storage
60,200 acre-ft
Year Completed
1962
Primary Purpose
Water Supply
Owner Type
Local Government
Max Discharge
49,000 cfs

Condition Assessment

SatisfactoryLast inspected: 2023-08-16

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
CA00833
State
California (CA)
Coordinates
40.36850, -123.43320
Age
64 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.