Morrison Dam
Morrison Dam is an earth dam located in Pembina County, North Dakota, built in 1956. It carries a Low hazard potential classification.
About Morrison Dam
The primary purpose of Morrison 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 Cavalier.
The dam stands 28 feet tall and stretches 330 feet across, creates a reservoir covering 24 acres, has a maximum storage capacity of 1,659 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1956, 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. The most recent inspection on record was 06/12/2013. That was over 12 years ago.
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Location
| State | North Dakota |
| County | Pembina |
| Nearest City | Cavalier |
| River/Stream | Tongue River-tr |
| Coordinates | 48.78069, -97.77651 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 330 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 1,659 acre-ft |
| Max Storage | 1,659 acre-ft |
| Normal Storage | 101 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 5 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Pembina County WRB |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 06/12/2013 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ND00048 |
| Federal ID | ND00048 |
| More Info | State Dam Safety Program |