D. Dunn Reservoir Report
Nearby: J. Gebhart No.1 Coal Springs Dam
Last Updated: December 6, 2025
Located in Perkins, South Dakota, the D.
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Summary
Dunn dam stands as a testament to water resource management in the region. Completed in 1949, this private-owned Earth dam boasts a height of 20 feet and a length of 380 feet, providing a storage capacity of 136 acre-feet. Situated on the TR-MOREAU river, this structure is regulated by the South Dakota Department of Environment and Natural Resources, ensuring its adherence to state permitting, inspection, and enforcement protocols.
Despite its low hazard potential and "Not Rated" condition assessment, the D. Dunn dam plays a crucial role in the local water infrastructure, with a normal storage capacity of 115 acre-feet and a maximum discharge of 110 cubic feet per second. The dam's location within the St. Paul District further emphasizes its significance in the region's water management system. With a strong foundation in place, the D. Dunn dam continues to serve as a vital resource for the surrounding community, highlighting the intersection of water resource management and climate resilience in South Dakota.
As water enthusiasts and climate advocates alike recognize the importance of sustainable water management practices, the D. Dunn dam stands out as a key player in ensuring water security in Perkins, South Dakota. With its state-regulated status and private ownership, this Earth dam embodies the balance between human development and environmental stewardship. As the region continues to face challenges posed by a changing climate, structures like the D. Dunn dam serve as a reminder of the critical role that water resources play in fostering resilience and sustainability in the face of environmental uncertainty.
Year Completed |
1949 |
Dam Length |
380 |
Dam Height |
20 |
River Or Stream |
TR-MOREAU |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
136 |
Hazard Potential |
Low |
Nid Height |
20 |
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.
D. Dunn