Twp Road 73
Key Takeaway
Twp Road 73 is classified as low hazard in Minnesota. It was completed in 1999 and is 27 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 21 ft (taller than 63.7% in MN) |
| Dam Length | 200 ft |
| Dam Type | Earth |
| Max Storage | 151 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 67 cfs |
| Year Completed | 1999 (27 years old) |
| NID ID | MN01047 |
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
County of Lyon
Local Government
Nearby Dams
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Low Hazard 28 ftSodus 6
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Low Hazard 21 ftFrequently Asked Questions
What is the hazard classification of Twp Road 73?
Twp Road 73 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 Twp Road 73?
Twp Road 73 is owned by County of Lyon (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twp Road 73 built?
Twp Road 73 was completed in 1999, making it 27 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 Twp Road 73?
Twp Road 73 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 Twp Road 73?
Twp Road 73 has a dam height of 21 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 Twp Road 73 last inspected?
Twp Road 73 was last inspected on August 24, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.