Susag Dam; Eddie Reservoir Report
Nearby: Nd No Name 266 Nygaard Dam; Terrence
Last Updated: December 5, 2025
Located in Bowman, North Dakota, the Susag Dam; Eddie is a private-owned earth dam designed by USDA NRCS in 1960 for fire protection, stock, or small fish pond purposes.
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Summary
The dam stands at 24 feet tall and stretches 399 feet in length, with a storage capacity of 70 acre-feet. The dam sits on Horse Creek and is regulated by the North Dakota State Water Commission, with inspections and enforcement carried out by NDSWC.
With a low hazard potential and a moderate risk assessment rating, the Susag Dam; Eddie is a vital water resource structure in the area. The dam features an uncontrolled spillway with a width of 174 feet and a surface area of 9 acres. Although its condition assessment is currently not rated, the dam continues to serve its primary purposes effectively while meeting state regulatory requirements for permitting, inspection, and enforcement. For water resource and climate enthusiasts, the Susag Dam; Eddie is a noteworthy structure that contributes to the local ecosystem and water management efforts in North Dakota.
Year Completed |
1960 |
Dam Length |
399 |
Dam Height |
24 |
River Or Stream |
HORSE CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Drainage Area |
0.88 |
Nid Storage |
70 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
Seasonal Comparison
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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.
Susag Dam; Eddie