South Walnut Lake
Key Takeaway
South Walnut Lake is classified as low hazard in Minnesota. It was completed in 1931 and is 95 years old. Its primary use is fish and wildlife pond.
Physical Details
| Dam Height | 6 ft (taller than 1.9% in MN) |
| Dam Type | Other |
| Max Storage | 3.0K acre-ft |
| Normal Storage | 2.4K acre-ft |
| Surface Area | 800 acres |
| Drainage Area | 115 sq mi |
| Max Discharge | 1,329 cfs |
| Year Completed | 1931 (95 years old) |
| NID ID | MN00148 |
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
MNDNR-Wildlife
State Government
Frequently Asked Questions
What is the hazard classification of South Walnut Lake?
South Walnut Lake 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 South Walnut Lake?
South Walnut Lake is owned by MNDNR-Wildlife (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Walnut Lake built?
South Walnut Lake was completed in 1931, making it 95 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 South Walnut Lake?
South Walnut Lake serves the following purposes: 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 South Walnut Lake?
South Walnut Lake has a dam height of 6 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 South Walnut Lake last inspected?
South Walnut Lake was last inspected on November 4, 2008. Inspection dates indicate when a formal review occurred, not the results of that inspection.