Sieler Dam Reservoir Report
Nearby: Fortune Dam Sd Noname 45
Last Updated: December 6, 2025
Sieler Dam, located in Pennington, South Dakota, is a private-owned structure that serves as a vital resource for water management in the area.
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Summary
Built in 1955, this earth dam stands at a height of 20 feet and has a storage capacity of 90 acre-feet, making it an essential component in the region's water supply infrastructure. The dam is regulated by the South Dakota Department of Environment and Natural Resources, ensuring its safety and compliance with state standards.
Despite its low hazard potential, Sieler Dam plays a crucial role in flood control and water storage along the TR BAD RIVER. Managed by the Natural Resources Conservation Service, the dam provides a reliable source of water for irrigation, drinking, and recreational activities in the surrounding areas. While its condition is currently not rated, regular inspections and maintenance efforts are in place to ensure the safety and effectiveness of the structure for years to come.
With its strategic location and significant contribution to water resource management, Sieler Dam stands as a testament to sustainable infrastructure development in South Dakota. As climate change continues to impact water availability and quality, the importance of structures like Sieler Dam in ensuring reliable water supply and flood mitigation cannot be overstated. For water resource and climate enthusiasts, Sieler Dam represents a key piece of the puzzle in managing water resources in a changing world.
Year Completed |
1955 |
Dam Length |
655 |
Dam Height |
20 |
River Or Stream |
TR BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
90 |
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.
Sieler Dam