Holzwarth Dam Reservoir Report
Nearby: Ralph Holzwarth T. Holzwarth
Last Updated: December 11, 2025
Holzwarth Dam, located in Potter County, South Dakota, stands as a testament to the importance of water resource management in the region.
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Summary
Built in 1956, this earth dam reaches a height of 25 feet and has a storage capacity of 320 acre-feet, with a normal storage level of 285 acre-feet. The dam plays a critical role in regulating the flow of the TR-MISSONot RatedI river, with a maximum discharge capacity of 1352 cubic feet per second.
Managed by a private owner, Holzwarth Dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR), with state jurisdiction and permitting in place to ensure its safety and compliance with regulations. Despite being rated as having a significant hazard potential, the dam's condition assessment remains unrated. As a key piece of infrastructure in the area, the dam serves as a vital component of the local water management system, emphasizing the importance of sustainable practices in the face of climate change challenges.
In the realm of water resource and climate enthusiasts, Holzwarth Dam stands as a symbol of the intricate balance between human intervention and natural forces. With its modest height and storage capacity, the dam showcases the importance of careful planning and management in safeguarding water resources for future generations. As climate change continues to impact water availability and quality, structures like Holzwarth Dam play a crucial role in ensuring water security and resilience in the face of evolving environmental conditions.
Year Completed |
1956 |
Dam Length |
456 |
Dam Height |
25 |
River Or Stream |
TR-MISSONot RatedI |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
320 |
Hazard Potential |
Significant |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Moreau R Near Whitehorse Sd
|
35cfs |
Bad R Near Fort Pierre Sd
|
7cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
Grand R At Little Eagle Sd
|
47cfs |
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.
Holzwarth Dam