Muck Valley Afterbay
Key Takeaway
Muck Valley Afterbay is classified as low hazard in California. It was completed in 1990 and is 36 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 15 ft (taller than 8.1% in CA) |
| Dam Length | 6,200 ft |
| Dam Type | Earth |
| Normal Storage | 420 acre-ft |
| Surface Area | 30 acres |
| Max Discharge | 700 cfs |
| Year Completed | 1990 (36 years old) |
| NID ID | CA01352 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Malacha Hydro Limited Partnership
Private
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High Hazard 47 ftFrequently Asked Questions
What is the hazard classification of Muck Valley Afterbay?
Muck Valley Afterbay is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Muck Valley Afterbay?
Muck Valley Afterbay is owned by Malacha Hydro Limited Partnership (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Muck Valley Afterbay built?
Muck Valley Afterbay was completed in 1990, making it 36 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Muck Valley Afterbay?
Muck Valley Afterbay serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Muck Valley Afterbay?
Muck Valley Afterbay has a dam height of 15 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Muck Valley Afterbay last inspected?
Muck Valley Afterbay was last inspected on May 19, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.