Dewey Forebay
Key Takeaway
Dewey Forebay is classified as low hazard in Alaska. It was completed in 1905 and is 121 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 30 ft (taller than 52.9% in AK) |
| Dam Length | 132 ft |
| Dam Type | Timber Crib |
| Max Storage | 35 acre-ft |
| Normal Storage | 35 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 197 cfs |
| Year Completed | 1905 (121 years old) |
| NID ID | AK00059 |
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
Alaska Power and Telephone Company
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Dewey Forebay?
Dewey Forebay 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 Dewey Forebay?
Dewey Forebay is owned by Alaska Power and Telephone Company (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dewey Forebay built?
Dewey Forebay was completed in 1905, making it 121 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 Dewey Forebay?
Dewey Forebay serves the following purposes: Hydroelectric, Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Dewey Forebay?
Dewey Forebay has a dam height of 30 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 Dewey Forebay last inspected?
Dewey Forebay was last inspected on June 5, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.