Stegner Dam; William 4 Reservoir Report
Last Updated: December 5, 2025
Stegner Dam, also known as William 4, is a private earth dam located in Slope, North Dakota, along the Deep Creek-TR stream.
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Summary
Built in 1973 by the USDA NRCS, this dam serves multiple purposes including fire protection, livestock watering, and a small fish pond. With a height of 22 feet and a length of 545 feet, Stegner Dam has a storage capacity of 169 acre-feet and a surface area of 19 acres, making it an essential water resource for the surrounding area.
This dam is state-regulated by the North Dakota State Water Commission (NDSWC) and is classified as having a low hazard potential. While the condition assessment is currently not rated, the risk assessment indicates a moderate risk level. The spillway, with a width of 65 feet, is uncontrolled, and there are no outlet gates associated with the dam. Despite not having been inspected recently, the dam is designed to meet state permitting, inspection, and enforcement requirements, ensuring its safety and functionality for the community it serves.
Located in a remote area, Stegner Dam provides vital water resources for firefighting, agricultural activities, and recreational purposes. As a significant structure in the region, it contributes to the overall water management and climate resilience efforts in North Dakota. With its multiple uses and state-regulated status, Stegner Dam continues to play a crucial role in water conservation and management in the area.
Year Completed |
1973 |
Dam Length |
545 |
Dam Height |
22 |
River Or Stream |
DEEP CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
19 |
Drainage Area |
2.22 |
Nid Storage |
169 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
22 |
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.
Stegner Dam; William 4