Long Lake Dam
Key Takeaway
Long Lake Dam is classified as low hazard in Alaska. It was completed in 1973 and is 53 years old. Its primary use is hydroelectric.
Physical Details
| Dam Length | 337 ft |
| Dam Type | Concrete |
| Max Storage | 147.0K acre-ft |
| Normal Storage | 147.0K acre-ft |
| Surface Area | 1,375 acres |
| Drainage Area | 32 sq mi |
| Max Discharge | 28,000 cfs |
| Year Completed | 1973 (53 years old) |
| NID ID | AK00044 |
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 INDUSTRIAL DEVELOPMENT AND EXPORT AUTHORITY
Public Utility
Frequently Asked Questions
What is the hazard classification of Long Lake Dam?
Long Lake Dam 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 Long Lake Dam?
Long Lake Dam is owned by ALASKA INDUSTRIAL DEVELOPMENT AND EXPORT AUTHORITY (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Long Lake Dam built?
Long Lake Dam was completed in 1973, making it 53 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 Long Lake Dam?
Long Lake Dam serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Long Lake Dam last inspected?
Long Lake Dam was last inspected on August 28, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.