Mandernach And Carlson 3 Reservoir Report
Nearby: Mandernach & Carlson No. 9 G. Lund
Last Updated: December 6, 2025
Mandernach and Carlson 3 is a privately owned dam located in Ziebach, South Dakota along the TR CHEYENNE river.
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Summary
Built in 1959, this earth dam stands at 24 feet in height and spans 425 feet in length, providing a storage capacity of 133 acre-feet. The dam is under state jurisdiction and regulated by the South Dakota Department of Environment and Natural Resources (DENR), with regular inspections and enforcement measures in place to ensure its safety and compliance.
Despite being classified as having a low hazard potential, Mandernach and Carlson 3 has not been rated for its condition assessment. Emergency action plans have not been prepared or updated for this dam, and risk assessment and management measures are currently unspecified. The dam is not owned or funded by any federal agencies, and there is limited information available on associated structures or maintenance activities. With its strategic location in South Dakota and importance in water resource management, this dam serves as a key infrastructure for the local community and surrounding areas.
Overall, Mandernach and Carlson 3 plays a vital role in water storage and flood control efforts in the region, highlighting the intersection of water resource management and climate resilience. As climate change continues to impact weather patterns and water availability, the maintenance and upkeep of dams like Mandernach and Carlson 3 become increasingly crucial for ensuring the safety and sustainability of water resources for future generations. Continued monitoring and investment in dam infrastructure will be essential to adapt to changing climate conditions and mitigate potential risks associated with extreme weather events.
Year Completed |
1959 |
Dam Length |
425 |
Dam Height |
24 |
River Or Stream |
TR CHEYENNE |
Primary Dam Type |
Earth |
Hydraulic Height |
24 |
Nid Storage |
133 |
Hazard Potential |
Low |
Nid Height |
24 |
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.
Mandernach And Carlson 3