Twp Road 87
Twp Road 87 is an earth dam located in Lincoln County, Minnesota, built in 1995. It carries a Low hazard potential classification.
About Twp Road 87
The primary purpose of Twp Road 87 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 Township Of Lakestay (local government). It impounds the Yellow Medicine River S B near Marshall.
The dam stands 17 feet tall and stretches 400 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 300 acre-feet, and collects water from a drainage area of 38 square miles. Completed in 1995, the structure is 31 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 07/31/2024.
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Location
| State | Minnesota |
| County | Lincoln |
| Nearest City | Marshall |
| River/Stream | Yellow Medicine River S B |
| Coordinates | 44.43871, -96.14018 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 15 ft |
| Dam Length | 400 ft |
| Year Completed | 1995 (31 years old) |
Storage & Hydraulics
| NID Storage | 300 acre-ft |
| Max Storage | 300 acre-ft |
| Normal Storage | 2 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 38 sq mi |
| Max Discharge | 2,300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Township of Lakestay |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Last Inspection | 07/31/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01380 |
| Federal ID | MN01380 |
| More Info | State Dam Safety Program |