Tanny Armstrong Dam
Key Takeaway
Tanny Armstrong Dam is classified as low hazard in Michigan. It was completed in 1978 and is 48 years old. Its primary use is recreation.
Physical Details
| Dam Height | 16 ft (taller than 55.7% in MI) |
| Dam Length | 1,100 ft |
| Dam Type | Earth |
| Max Storage | 227 acre-ft |
| Normal Storage | 112 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 3 sq mi |
| Year Completed | 1978 (48 years old) |
| NID ID | MI00481 |
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
Chippewa-Ottawa Resource Authority
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Tanny Armstrong Dam?
Tanny Armstrong 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 Tanny Armstrong Dam?
Tanny Armstrong Dam is owned by Chippewa-Ottawa Resource Authority (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Tanny Armstrong Dam built?
Tanny Armstrong Dam was completed in 1978, making it 48 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 Tanny Armstrong Dam?
Tanny Armstrong Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Tanny Armstrong Dam?
Tanny Armstrong Dam has a dam height of 16 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 Tanny Armstrong Dam last inspected?
Tanny Armstrong Dam was last inspected on October 2, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.