Howard Capp Reservoir Report
Nearby: Tom Mason Eugene Welder
Last Updated: December 13, 2025
Howard Capp is a privately owned dam located in Perkins, South Dakota, along the TR Moreau River.
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Summary
Built in 1951, this earth dam stands at a height of 16 feet and has a storage capacity of 64 acre-feet. Managed by the Natural Resources Conservation Service, Howard Capp is regulated by the South Dakota Department of Environment and Natural Resources, with state permitting, inspection, and enforcement in place to ensure its safety and compliance.
With a low hazard potential and a current condition assessment of "Not Rated," Howard Capp serves as a vital water resource for the surrounding area, providing irrigation and flood control benefits. The dam has a maximum discharge capacity of 150 cubic feet per second and a normal storage capacity of 45 acre-feet. While it does not have an emergency action plan in place as of the latest data update in May 2021, Howard Capp remains a reliable infrastructure for water management in the region.
Despite lacking certain detailed information such as inspection dates and hazard assessments, Howard Capp continues to play a crucial role in water resource management in South Dakota. Its presence along the TR Moreau River contributes to the overall environmental and climate resilience of the area, showcasing the importance of maintaining and monitoring such infrastructure for the benefit of both water supply and disaster risk reduction efforts.
Year Completed |
1951 |
Dam Length |
440 |
Dam Height |
16 |
River Or Stream |
TR MOREAU RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
16 |
Nid Storage |
64 |
Hazard Potential |
Low |
Nid Height |
16 |
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.
Howard Capp