Mashaug Creek Dam No. 3 is an earth dam located in Norman County, Minnesota, built in 1977. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 35 ft35 ft tall and 1,200 ft long, taller than 80% of U.S. dams with a recorded height. 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 Mashaug Creek Dam No. 3
The primary purpose of Mashaug Creek Dam No. 3 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 Swcd of Norman County (local government). It impounds the Wild Rice River-tr near Twin Valley.
The dam stands 35 feet tall and stretches 1,200 feet across, has a maximum storage capacity of 460 acre-feet, and collects water from a drainage area of 12 square miles. Completed in 1977, the structure is 49 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. 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 08/11/2022.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Minnesota |
| County | Norman |
| Nearest City | Twin Valley |
| River/Stream | Wild Rice River-tr |
| Coordinates | 47.35453, -96.20006 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 32 ft |
| Dam Length | 1,200 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 460 acre-ft |
| Max Storage | 460 acre-ft |
| Normal Storage | 56 acre-ft |
| Drainage Area | 12 sq mi |
| Max Discharge | 1,180 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Swcd of Norman County |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 08/11/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00724 |
| Federal ID | MN00724 |
| More Info | State Dam Safety Program |