North Ottawa
North Ottawa is an earth dam located in Grant County, Minnesota, built in 2008. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About North Ottawa
The primary purpose of North Ottawa 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 Wd Of Bois De Sioux (local government). It impounds the Judicial Ditch 2 near Tintah.
The dam stands 18 feet tall, has a maximum storage capacity of 23,800 acre-feet, and collects water from a drainage area of 37 square miles. Completed in 2008, the structure is relatively new.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/11/2022.
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Location
| State | Minnesota |
| County | Grant |
| Nearest City | Tintah |
| River/Stream | Judicial Ditch 2 |
| Coordinates | 45.97088, -96.25614 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 12 ft |
| Year Completed | 2008 (18 years old) |
Storage & Hydraulics
| NID Storage | 23,800 acre-ft |
| Max Storage | 23,800 acre-ft |
| Normal Storage | 4,000 acre-ft |
| Drainage Area | 37 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | WD of Bois de Sioux |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/11/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01453 |
| Federal ID | MN01453 |
| More Info | State Dam Safety Program |