Upper Long Lake Dam
Key Takeaway
Upper Long Lake Dam is classified as low hazard in Michigan. It was completed in 1992 and is 34 years old. Its primary use is other.
Physical Details
| Dam Height | 7 ft (taller than 1.3% in MI) |
| Dam Length | 660 ft |
| Dam Type | Earth |
| Max Storage | 1.1K acre-ft |
| Normal Storage | 300 acre-ft |
| Surface Area | 215 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 310 cfs |
| Year Completed | 1992 (34 years old) |
| NID ID | MI02572 |
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
MDNR Wildlife
State Government
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Low Hazard 7 ftFrequently Asked Questions
What is the hazard classification of Upper Long Lake Dam?
Upper 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 Upper Long Lake Dam?
Upper Long Lake Dam is owned by MDNR Wildlife (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Long Lake Dam built?
Upper Long Lake Dam was completed in 1992, making it 34 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 Long Lake Dam?
Upper Long Lake Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Upper Long Lake Dam?
Upper Long Lake Dam has a dam height of 7 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 Long Lake Dam last inspected?
Upper Long Lake Dam was last inspected on October 29, 2014. Inspection dates indicate when a formal review occurred, not the results of that inspection.