Douglas Island Dam
Key Takeaway
Douglas Island Dam is classified as high hazard in Alaska. It was completed in 1937 and is 89 years old. Its primary use is other. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Length | 91 ft |
| Dam Type | Arch |
| Max Storage | 3 acre-ft |
| Normal Storage | 3 acre-ft |
| Surface Area | 0 acres |
| Max Discharge | 40 cfs |
| Year Completed | 1937 (89 years old) |
| NID ID | AK00077 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CITY OF JUNEAU
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Douglas Island Dam?
Douglas Island Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Douglas Island Dam?
Douglas Island Dam is owned by CITY OF JUNEAU (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Douglas Island Dam built?
Douglas Island Dam was completed in 1937, making it 89 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 Douglas Island Dam?
Douglas Island Dam serves the following purposes: Other, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Douglas Island Dam last inspected?
Douglas Island Dam was last inspected on July 27, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.