Lake Mann Dam
Lake Mann Dam is an earth dam located in Sargent County, North Dakota, built in 1965. It carries a Low hazard potential classification and has a fair condition assessment.
About Lake Mann Dam
The primary purpose of Lake Mann Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Us Fish And Wildlife Service (federal). It impounds the Wild Rice River.
The dam stands 9 feet tall and stretches 784 feet across, creates a reservoir covering 58 acres, has a maximum storage capacity of 658 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1965, the structure is well into its service life at over 50 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 10/06/2020.
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Location
| State | North Dakota |
| County | Sargent |
| River/Stream | Wild Rice River |
| Coordinates | 46.02570, -97.53660 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 784 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 658 acre-ft |
| Max Storage | 658 acre-ft |
| Normal Storage | 475 acre-ft |
| Surface Area | 58 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 35 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | US FISH AND WILDLIFE SERVICE |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/06/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ND00900 |
| Federal ID | ND00900 |
| More Info | State Dam Safety Program |