Pat Stout Reservoir Report
Nearby: Pat Stout No.1 Roy Stout No.2
Last Updated: December 6, 2025
Pat Stout is a privately owned earth dam located in Jackson, South Dakota, along the TR-Bad River.
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Summary
Built in 1960, this dam stands at 18 feet in height and spans 1000 feet in length, with a storage capacity of 850 acre-feet. Managed by the South Dakota Department of Environment and Natural Resources (DENR), Pat Stout is regulated, permitted, inspected, and enforced by state authorities to ensure compliance with safety standards.
Despite its low hazard potential and current "Not Rated" condition assessment, Pat Stout plays a crucial role in water resource management and flood control in the region. With a maximum discharge capacity of 1560 cubic feet per second, this dam serves as a vital infrastructure for mitigating flood risks and protecting downstream communities. Additionally, the presence of associated structures and the involvement of the Natural Resources Conservation Service in its design highlight the collaborative efforts in preserving and managing water resources in South Dakota.
As a notable feature in the St. Paul District of the US Army Corps of Engineers, Pat Stout represents a significant investment in water infrastructure with a focus on sustainable resource management. While details such as emergency action planning and risk assessment are currently not available, the dam's history, purpose, and ongoing regulatory oversight underscore its importance in ensuring water security and climate resilience in the area. For water resource and climate enthusiasts, Pat Stout serves as a case study in the intersection of infrastructure development, environmental stewardship, and community safety.
Year Completed |
1960 |
Dam Length |
1000 |
Dam Height |
18 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
850 |
Hazard Potential |
Low |
Nid Height |
18 |
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.
Pat Stout