Ward Co. Hwy Dept Dam Reservoir Report
Last Updated: December 14, 2025
Located in McLean, North Dakota, the Ward Co.
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Summary
Hwy Dept Dam is a privately owned structure designed for flood risk reduction on the Hiddenwood Lake-TR. Completed in 1999, this earth dam stands at a height of 10 feet and has a storage capacity of 190 acre-feet. With a surface area of 22 acres and a drainage area of 4.06 square miles, the dam serves as a crucial protective barrier against potential flooding events in the region.
Managed by the North Dakota State Water Commission, the Ward Co. Hwy Dept Dam is regulated, inspected, and enforced by state authorities to ensure its structural integrity and functionality. With a low hazard potential and a moderate risk assessment score of 3, the dam remains a vital asset in mitigating flood risks in the area. Equipped with a slide gate outlet, the dam is designed to control water flow and protect surrounding communities from potential water emergencies.
Despite its low hazard potential, the Ward Co. Hwy Dept Dam plays a crucial role in safeguarding the local environment and infrastructure from flood-related threats. With its focus on flood risk reduction and its state-regulated status, this earth dam stands as a testament to the importance of water resource management in ensuring community safety and resilience in the face of climate challenges.
Year Completed |
1999 |
Dam Height |
10 |
River Or Stream |
HIDDENWOOD LAKE-TR |
Primary Dam Type |
Earth |
Surface Area |
22 |
Drainage Area |
4.06 |
Nid Storage |
190 |
Outlet Gates |
Slide (sluice gate) - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Ward Co. Hwy Dept Dam