Heil Dam
Key Takeaway
Heil Dam is classified as low hazard in Michigan. It was completed in 1970 and is 56 years old. Its primary use is recreation.
Physical Details
| Dam Height | 23 ft (taller than 79.7% in MI) |
| Dam Length | 120 ft |
| Dam Type | Earth |
| Max Storage | 140 acre-ft |
| Normal Storage | 90 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 160 cfs |
| Year Completed | 1970 (56 years old) |
| NID ID | MI00208 |
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
McDonald and Gurnsey
Private
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Significant Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Heil Dam?
Heil 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 Heil Dam?
Heil Dam is owned by McDonald and Gurnsey (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Heil Dam built?
Heil Dam was completed in 1970, making it 56 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 Heil Dam?
Heil 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 Heil Dam?
Heil Dam has a dam height of 23 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 Heil Dam last inspected?
Heil Dam was last inspected on October 1, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.