Twp Road 112
Twp Road 112 is an earth dam located in Lyon County, Minnesota, built in 1996. It carries a Low hazard potential classification.
About Twp Road 112
The primary purpose of Twp Road 112 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 County Of Lyon (local government). It impounds the Yellow Medicine River-tr near Minneota.
The dam stands 31 feet tall and stretches 500 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 179 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1996, the structure is 30 years old.
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 08/01/2024.
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Location
| State | Minnesota |
| County | Lyon |
| Nearest City | Minneota |
| River/Stream | Yellow Medicine River-tr |
| Coordinates | 44.54321, -96.08033 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 29 ft |
| Dam Length | 500 ft |
| Year Completed | 1996 (30 years old) |
Storage & Hydraulics
| NID Storage | 179 acre-ft |
| Max Storage | 179 acre-ft |
| Normal Storage | 2 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 175 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | County of Lyon |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Last Inspection | 08/01/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01375 |
| Federal ID | MN01375 |
| More Info | State Dam Safety Program |