Annex Creek
Key Takeaway
Annex Creek is classified as low hazard in Alaska. It was completed in 1968 and is 58 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 20 ft (taller than 36.5% in AK) |
| Dam Length | 115 ft |
| Dam Type | Other |
| Max Storage | 23.4K acre-ft |
| Normal Storage | 23.4K acre-ft |
| Surface Area | 264 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 458 cfs |
| Year Completed | 1968 (58 years old) |
| NID ID | AK00004 |
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 Electric Light and Power Company
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Annex Creek?
Annex Creek 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 Annex Creek?
Annex Creek is owned by Alaska Electric Light and Power Company (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Annex Creek built?
Annex Creek was completed in 1968, making it 58 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 Annex Creek?
Annex Creek serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Annex Creek?
Annex Creek has a dam height of 20 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 Annex Creek last inspected?
Annex Creek was last inspected on July 21, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.