Middle Branch Park River Dam 6 is an earth dam located in Walsh County, North Dakota, built in 1974. It carries a Significant hazard potential classification.
Dam profile
NID height · 58 ft58 ft tall and 500 ft long, taller than 95% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Middle Branch Park River Dam 6
The primary purpose of Middle Branch Park River Dam 6 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 Walsh County Wrb (local government). It impounds the Middle Branch Park River near N.
The dam stands 58 feet tall and stretches 500 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 724 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1974, the structure is well into its service life at over 50 years old.
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. The most recent inspection on record was 07/21/2015. That was over 11 years ago.
At 58 feet, this dam is taller than 95% of all dams in the United States.
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Location
| State | North Dakota |
| County | Walsh |
| Nearest City | N |
| River/Stream | Middle Branch Park River |
| Coordinates | 48.47250, -97.93528 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 58 ft |
| Dam Height | 49 ft |
| Dam Length | 500 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 724 acre-ft |
| Max Storage | 724 acre-ft |
| Normal Storage | 34 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 4 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Walsh County Wrb |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 07/21/2015 |
| Emergency Action Plan | No |
Identifiers
| NID ID | ND00159 |
| Federal ID | ND00159 |
| More Info | State Dam Safety Program |