South Walnut Lake is an other dam located in Faribault County, Minnesota, built in 1931. It carries a Low hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About South Walnut Lake
The primary purpose of South Walnut Lake is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Mndnr-wildlife (state). It impounds the Blue Earth River East Fk near Dell.
The dam stands 10 feet tall, creates a reservoir covering 800 acres, has a maximum storage capacity of 3,000 acre-feet, and collects water from a drainage area of 115 square miles. Completed in 1931, the structure is well-established, with more than 75 years of service.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 07/31/2024.
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Location
| State | Minnesota |
| County | Faribault |
| Nearest City | Dell |
| River/Stream | Blue Earth River East Fk |
| Coordinates | 43.66191, -93.78613 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 10 ft |
| Dam Height | 6 ft |
| Year Completed | 1931 (95 years old) |
Storage & Hydraulics
| NID Storage | 3,000 acre-ft |
| Max Storage | 3,000 acre-ft |
| Normal Storage | 2,400 acre-ft |
| Surface Area | 800 acres |
| Drainage Area | 115 sq mi |
| Max Discharge | 1,329 cfs |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Mndnr-wildlife |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/31/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00148 |
| Federal ID | MN00148 |
| More Info | State Dam Safety Program |