South Rockwell Lake
South Rockwell Lake is an earth dam located in Big Stone County, Minnesota. It carries a Low hazard potential classification and has a fair condition assessment.
About South Rockwell Lake
South Rockwell Lake is a dam in Big Stone, Minnesota. The dam is owned by Graceville Twp (state). It impounds the Twelvemile Cr W Br-tr near Dumont.
The dam stands 12 feet tall, creates a reservoir covering 287 acres, has a maximum storage capacity of 100 acre-feet, and collects water from a drainage area of 1 square miles.
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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 08/07/2019.
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Location
| State | Minnesota |
| County | Big Stone |
| Nearest City | Dumont |
| River/Stream | Twelvemile Cr W Br-tr |
| Coordinates | 45.49839, -96.44669 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
Storage & Hydraulics
| NID Storage | 100 acre-ft |
| Max Storage | 100 acre-ft |
| Normal Storage | 100 acre-ft |
| Surface Area | 287 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | Graceville Twp |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 08/07/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01513 |
| Federal ID | MN01513 |
| More Info | State Dam Safety Program |