Maple River Dam
Maple River Dam is an earth dam located in Cass County, North Dakota, built in 2006. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Maple River Dam
The primary purpose of Maple River 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 Cass County Joint Wrb (local government). It impounds the Maple River near Durbin.
The dam stands 89 feet tall and stretches 2,300 feet across, creates a reservoir covering 2,725 acres, has a maximum storage capacity of 103,200 acre-feet, and collects water from a drainage area of 901 square miles. Completed in 2006, the structure is relatively new.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 10/08/2020.
At 89 feet, this dam is taller than 97% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The North Dakota dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | North Dakota |
| County | Cass |
| Nearest City | Durbin |
| River/Stream | Maple River |
| Coordinates | 46.68582, -97.45368 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 89 ft |
| Dam Height | 73 ft |
| Dam Length | 2,300 ft |
| Year Completed | 2006 (20 years old) |
Storage & Hydraulics
| NID Storage | 103,200 acre-ft |
| Max Storage | 103,200 acre-ft |
| Normal Storage | 53,100 acre-ft |
| Surface Area | 2,725 acres |
| Drainage Area | 901 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Cass County Joint WRB |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/08/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | ND01031 |
| Federal ID | ND01031 |
| More Info | State Dam Safety Program |