Maple River Dam Reservoir Report

Last Updated: December 13, 2025

Maple River Dam, located in Durbin, Cass County, North Dakota, is a local government-owned structure designed by Moore Engineering/Barr Engineering and completed in 2006.


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Summary

This earth dam stands at a height of 73 feet with a structural height of 89 feet and a length of 2300 feet, serving the primary purpose of flood risk reduction along the Maple River. With a storage capacity of 103,200 acre-feet and a normal storage of 53,100 acre-feet, the dam covers a surface area of 2,725 acres and drains a watershed area of 901 square miles.

Managed by the North Dakota State Water Commission, Maple River Dam is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and functionality. The dam features an uncontrolled spillway with a width of 1200 feet and has a high hazard potential, although its condition assessment in April 2021 was deemed satisfactory. Despite its moderate risk assessment score of 3, the dam does not have an emergency action plan prepared, indicating a potential area for improvement in terms of risk management and emergency response protocols.

Overall, Maple River Dam plays a crucial role in mitigating flood risks along the Maple River in North Dakota, demonstrating the importance of effective water resource management and climate resilience efforts in safeguarding communities from potential hazards. As water resource and climate enthusiasts, understanding the design, purpose, and operational aspects of infrastructure like Maple River Dam can provide valuable insights into the complex interplay between human development and natural systems in an era of changing climatic patterns.

Year Completed

2006

Dam Length

2300

Dam Height

73

River Or Stream

MAPLE RIVER

Primary Dam Type

Earth

Surface Area

2725

Drainage Area

901

Nid Storage

103200

Structural Height

89

Outlet Gates

None

Hazard Potential

High

Foundations

Soil

Nid Height

89
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.