Mantorville is a gravity dam located in Dodge County, Minnesota, built in 1888. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 13 ft13 ft tall and 565 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Mantorville
The primary purpose of Mantorville is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City of Mantorville (local government). It impounds the Zumbro Riv S Br Middle Fk near Mantorville.
The dam stands 13 feet tall and stretches 565 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 436 acre-feet, and collects water from a drainage area of 147 square miles. Completed in 1888, the structure is over a century 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 07/13/2017.
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Location
| State | Minnesota |
| County | Dodge |
| Nearest City | Mantorville |
| River/Stream | Zumbro Riv S Br Middle Fk |
| Coordinates | 44.06402, -92.75499 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 13 ft |
| Dam Height | 12 ft |
| Dam Length | 565 ft |
| Year Completed | 1888 (138 years old) |
Storage & Hydraulics
| NID Storage | 436 acre-ft |
| Max Storage | 436 acre-ft |
| Normal Storage | 238 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 147 sq mi |
| Max Discharge | 2,700 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Mantorville |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 07/13/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00390 |
| Federal ID | MN00390 |
| More Info | State Dam Safety Program |