Palmer Pearson No.2 Reservoir Report
Nearby: Palmer Pearson No.1 Pere Pearson 1
Last Updated: December 5, 2025
Palmer Pearson No.2 is a privately owned dam located in Haakon, South Dakota, along the TR-Cheyenne River.
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Summary
Completed in 1954, this earth dam stands at a height of 12 feet and has a length of 200 feet, providing a storage capacity of 61 acre-feet. Despite its low hazard potential, the dam is regulated by the South Dakota Department of Environment and Natural Resources, with state permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations.
Managed by private owners, Palmer Pearson No.2 plays a crucial role in water resource management in the region, with a primary purpose that is not specifically defined. The dam's condition assessment is currently listed as "Not Rated," indicating a need for further evaluation. Although there are no associated structures or emergency action plan in place, the dam's risk management measures and potential hazards are yet to be fully assessed. With its location in a critical area along the Cheyenne River, maintaining the integrity and safety of Palmer Pearson No.2 is essential for protecting downstream communities and ecosystems from potential flooding and water scarcity issues.
As water resource and climate enthusiasts, understanding the regulatory framework, design features, and operational aspects of Palmer Pearson No.2 is crucial for ensuring sustainable water management practices in the region. With the dam's history dating back to the mid-20th century, ongoing monitoring and evaluation of its structural integrity, emergency preparedness, and risk mitigation strategies are essential for safeguarding the surrounding environment and communities. By staying informed and engaged in the maintenance and oversight of Palmer Pearson No.2, enthusiasts can contribute to the resilience and sustainability of water resources in South Dakota and beyond.
Year Completed |
1954 |
Dam Length |
200 |
Dam Height |
12 |
River Or Stream |
TR-CHEYENNE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
12 |
Nid Storage |
61 |
Hazard Potential |
Low |
Nid Height |
12 |
Seasonal Comparison
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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.
Palmer Pearson No.2