Knott Detention
Key Takeaway
Knott Detention is classified as low hazard in Minnesota. It was completed in 1977 and is 49 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 32 ft (taller than 86.1% in MN) |
| Dam Length | 570 ft |
| Dam Type | Earth |
| Max Storage | 261 acre-ft |
| Normal Storage | 63 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 686 cfs |
| Year Completed | 1977 (49 years old) |
| NID ID | MN00729 |
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
Knott, Arlen & Constance
Private
Nearby Dams
Knott Retention Reservoir
Redwood, MN
Low Hazard 32 ftNorth Hero 10
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Low Hazard 32 ftNorth Hero 35
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Low Hazard 21 ftDuncan Avenue
Redwood, MN
Low Hazard 26 ftAnn 6
Cottonwood, MN
Low Hazard 26 ftWalnut Grove
Redwood, MN
Significant Hazard 54 ftHolly 2
Murray, MN
Low Hazard 29 ftSpringdale 21
Redwood, MN
Significant Hazard 23 ftFrequently Asked Questions
What is the hazard classification of Knott Detention?
Knott Detention 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 Knott Detention?
Knott Detention is owned by Knott, Arlen & Constance (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Knott Detention built?
Knott Detention was completed in 1977, making it 49 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 Knott Detention?
Knott Detention 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 Knott Detention?
Knott Detention has a dam height of 32 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 Knott Detention last inspected?
Knott Detention was last inspected on March 14, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.