Palmer Pearson No.1 Reservoir Report
Nearby: Palmer Pearson No.2 Pere Pearson 1
Last Updated: December 5, 2025
Palmer Pearson No.1 is a privately owned earth dam located in Haakon, South Dakota, along the Cheyenne River.
°F
°F
mph
Wind
%
Humidity
Summary
Constructed in 1960, this dam stands at a height of 12 feet and has a storage capacity of 129 acre-feet. The primary purpose of this dam is not specified, but it serves as a vital water resource infrastructure in the region.
Managed by the South Dakota Department of Environment and Natural Resources, Palmer Pearson No.1 is regulated, permitted, inspected, and enforced to ensure its safety and compliance with state standards. With a low hazard potential and a current condition assessment of "Not Rated," this dam is considered to be in satisfactory condition. Despite lacking detailed information on emergency preparedness and risk management measures, Palmer Pearson No.1 remains an essential structure for water management and climate resilience in the area.
With its strategic location and significant contribution to water storage and management, Palmer Pearson No.1 plays a crucial role in supporting sustainable water resource practices in South Dakota. As a part of the St. Paul District under the Natural Resources Conservation Service, this dam underscores the importance of infrastructure maintenance and regulatory oversight to mitigate risks and ensure the long-term sustainability of water resources in the region.
Year Completed |
1960 |
Dam Length |
1200 |
Dam Height |
12 |
River Or Stream |
TR-CHEYENNE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
12 |
Nid Storage |
129 |
Hazard Potential |
Low |
Nid Height |
12 |
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.
Palmer Pearson No.1