Tetonka Ridge is a rockfill dam located in Lincoln County, Minnesota. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 52 ft52 ft tall and 400 ft long, taller than 93% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic rockfill embankment section and the water level is illustrative.
About Tetonka Ridge
The primary purpose of Tetonka Ridge is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Tetonka Ridge Ranch Trust (private). It impounds the Medary Creek-tr near Brookings, Sd.
The dam stands 52 feet tall and stretches 400 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 52 acre-feet, and collects water from a drainage area of 0 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 05/07/2019.
At 52 feet, this dam is taller than 93% of dams nationwide.
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Location
| State | Minnesota |
| County | Lincoln |
| Nearest City | Brookings, Sd |
| River/Stream | Medary Creek-tr |
| Coordinates | 44.41703, -96.45011 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 52 ft |
| Dam Height | 52 ft |
| Dam Length | 400 ft |
Storage & Hydraulics
| NID Storage | 52 acre-ft |
| Max Storage | 52 acre-ft |
| Normal Storage | 12 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Tetonka Ridge Ranch Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/07/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01763 |
| Federal ID | MN01763 |
| More Info | State Dam Safety Program |