Duwayne Slaathaug #1 Reservoir Report
Last Updated: December 7, 2025
Duwayne Slaathaug #1 is a privately owned earth dam located in Fort Pierre, South Dakota, along the tributary of the Bad River.
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Summary
Built in 1963, this dam stands at a height of 28 feet and has a storage capacity of 53 acre-feet. With a maximum discharge of 437 cubic feet per second, the dam serves the primary purpose of water resource management in the region, ensuring a reliable water supply for various stakeholders.
Managed by the Natural Resources Conservation Service, Duwayne Slaathaug #1 is regulated by the South Dakota Department of Environment and Natural Resources. Despite being classified as a low hazard potential structure, the condition assessment of the dam is currently listed as "Not Rated". Although there is limited information available on the dam's emergency action plan and risk management measures, the presence of state permitting, inspection, and enforcement protocols indicate a commitment to ensuring the safety and integrity of the structure.
Overall, Duwayne Slaathaug #1 plays a crucial role in the water management infrastructure of Stanley County, South Dakota. As a key component of the local watershed system, this dam contributes to flood control, irrigation, and water supply needs in the area. With its historical significance and continued operational relevance, Duwayne Slaathaug #1 serves as a testament to the importance of sustainable water resource management practices in the face of changing climate conditions.
Year Completed |
1963 |
Dam Length |
370 |
Dam Height |
28 |
River Or Stream |
TRIB. BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
28 |
Nid Storage |
53 |
Hazard Potential |
Low |
Nid Height |
28 |
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.
Duwayne Slaathaug #1