Upper South Dam
Key Takeaway
Upper South Dam is classified as low hazard in Michigan. It was completed in 1930 and is 96 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 20 ft (taller than 70.3% in MI) |
| Dam Length | 350 ft |
| Dam Type | Gravity |
| Max Storage | 55.0K acre-ft |
| Normal Storage | 40.1K acre-ft |
| Surface Area | 7,000 acres |
| Drainage Area | 182 sq mi |
| Max Discharge | 4,850 cfs |
| Year Completed | 1930 (96 years old) |
| NID ID | MI00202 |
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
Not Listed
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Upper South Dam?
Upper South 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 Upper South Dam?
Upper South Dam is owned by information not available (Not Listed). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper South Dam built?
Upper South Dam was completed in 1930, making it 96 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 Upper South Dam?
Upper South Dam 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 Upper South Dam?
Upper South Dam 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 Upper South Dam last inspected?
Upper South Dam was last inspected on September 17, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.