Roosevelt Reservoir Report
Nearby: Praire Farms Dam Irwin Dam
Last Updated: December 13, 2025
Roosevelt is a state-regulated dam located in Tripp, South Dakota, along the Ponca Creek Trib.
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Summary
Built in 1937, this earth dam stands at a height of 20 feet and has a length of 850 feet. With a storage capacity of 1213 acre-feet, it serves the primary purpose of water resource management in the area. The dam has a low hazard potential and is inspected every 3 years, with the last inspection taking place in October 2017.
Managed by the South Dakota Department of Agriculture and Natural Resources, Roosevelt plays a vital role in controlling the flow of water in the region, with a maximum discharge capacity of 3043 cubic feet per second. Despite its age, the dam's condition is currently not rated, and it does not have an Emergency Action Plan (EAP) in place. The surrounding area has not been mapped for inundation risks, and there is no detailed risk assessment or management plan available for the dam.
With its strategic location and vital role in water management, Roosevelt stands as a testament to the importance of infrastructure in adapting to and mitigating the impacts of climate change on water resources. While the dam currently operates with a low hazard potential, there is a need for enhanced monitoring, risk assessment, and emergency preparedness measures to ensure the safety and resilience of the structure in the face of changing environmental conditions.
Year Completed |
1937 |
Dam Length |
850 |
Dam Height |
20 |
River Or Stream |
PONCA CREEK TRIB |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Drainage Area |
22 |
Nid Storage |
1213 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Keya Paha R At Wewela Sd
|
54cfs |
Keya Paha R Near Keyapaha Sd
|
33cfs |
Niobrara River At Mariaville
|
1530cfs |
Platte Creek Near Platte
|
3cfs |
Long Pine Creek Near Riverview
|
188cfs |
White R Near Oacoma Sd
|
105cfs |
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.
Roosevelt