Prairie Portage
Key Takeaway
Prairie Portage is classified as low hazard in Minnesota. It was completed in 1975 and is 51 years old. Its primary use is recreation.
Physical Details
| Dam Height | 10 ft (taller than 30.9% in MN) |
| Dam Length | 108 ft |
| Dam Type | Concrete |
| Max Storage | 3.2K acre-ft |
| Normal Storage | 2.5K acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 230 sq mi |
| Max Discharge | 3,000 cfs |
| Year Completed | 1975 (51 years old) |
| NID ID | MN00646 |
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
USDA FS
Federal Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Prairie Portage?
Prairie Portage 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 Prairie Portage?
Prairie Portage is owned by USDA FS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Prairie Portage built?
Prairie Portage was completed in 1975, making it 51 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 Prairie Portage?
Prairie Portage serves the following purposes: Recreation, Navigation, Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Prairie Portage?
Prairie Portage has a dam height of 10 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 Prairie Portage last inspected?
Prairie Portage was last inspected on June 23, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.