Hanks Corner Dam
Hanks Corner Dam is an earth dam located in Cavalier County, North Dakota, built in 1955. It carries a Significant hazard potential classification.
About Hanks Corner Dam
The primary purpose of Hanks Corner Dam 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 Pembina County Wrb (local government). It impounds the Tongue River-tr near Hallson.
The dam stands 70 feet tall and stretches 850 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 281 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1955, 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 09/25/2019.
At 70 feet, this dam is taller than 96% of all dams in the United States.
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Location
| State | North Dakota |
| County | Cavalier |
| Nearest City | Hallson |
| River/Stream | Tongue River-tr |
| Coordinates | 48.75917, -97.95253 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 70 ft |
| Dam Height | 58 ft |
| Dam Length | 850 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 281 acre-ft |
| Max Storage | 281 acre-ft |
| Normal Storage | 12 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Pembina County WRB |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 09/25/2019 |
| Emergency Action Plan | No |
Identifiers
| NID ID | ND00050 |
| Federal ID | ND00050 |
| More Info | State Dam Safety Program |