Gruhlke
Key Takeaway
Gruhlke is classified as significant hazard in Minnesota. It was completed in 1974 and is 52 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 41 ft (taller than 94% in MN) |
| Dam Length | 425 ft |
| Dam Type | Earth |
| Max Storage | 105 acre-ft |
| Normal Storage | 25 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 184 cfs |
| Year Completed | 1974 (52 years old) |
| NID ID | MN00842 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Tillman, James
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Gruhlke?
Gruhlke is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Gruhlke?
Gruhlke is owned by Tillman, James (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Gruhlke built?
Gruhlke was completed in 1974, making it 52 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 Gruhlke?
Gruhlke serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Gruhlke?
Gruhlke has a dam height of 41 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 Gruhlke last inspected?
Gruhlke was last inspected on June 28, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.