Epping Dam Reservoir Report
Last Updated: December 13, 2025
Epping Dam, also known as Spring Brook Dam, is a local government-owned structure located in Spring Brook, North Dakota.
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Summary
Completed in 1935, this earth dam stands 47 feet tall and spans 1000 feet in length, with a maximum storage capacity of 3890 acre-feet. The dam serves primarily for recreational purposes, offering a surface area of 148 acres for water-based activities.
With the Stony Creek flowing nearby, Epping Dam is designed to handle normal and maximum storage levels efficiently. Its uncontrolled spillway, with a width of 100 feet, helps regulate water flow during periods of high discharge. The dam has been inspected regularly, with the last assessment conducted in May 2018, and has been deemed to have a significant hazard potential. Despite its moderate risk assessment, measures are in place to manage any potential emergencies that may arise, ensuring the safety of the surrounding community.
Overall, Epping Dam represents a crucial water resource in Williams County, North Dakota, providing both recreational opportunities and essential flood control capabilities. With its historical significance and ongoing maintenance efforts, the dam continues to play a vital role in managing water resources in the area.
Years Modified |
1943 - Hydraulic |
Year Completed |
1935 |
Dam Length |
1000 |
Dam Height |
47 |
River Or Stream |
STONY CREEK |
Primary Dam Type |
Earth |
Surface Area |
148 |
Drainage Area |
72.9 |
Nid Storage |
3890 |
Structural Height |
56 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
56 |
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.
Epping Dam