Floyd Hall Reservoir Report
Nearby: Tom Gabbert Harold Flatmoe
Last Updated: December 6, 2025
Floyd Hall, located in Perkins, South Dakota, is a privately owned earth dam on the TR-Moreau River with a height of 22 feet and a length of 600 feet.
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Summary
Completed in 1957, this structure serves as a state-regulated water resource with a storage capacity of 88 acre-feet and a maximum discharge of 2000 cubic feet per second. Despite its low hazard potential, the condition of Floyd Hall is currently not rated, indicating a need for further assessment and potential maintenance.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Floyd Hall is subject to state permitting, inspection, and enforcement to ensure its safe operation and compliance with regulatory standards. While the dam's emergency action plan status and risk assessment details are currently unspecified, its strategic location within the St. Paul District and under the jurisdiction of Dusty Johnson (R) suggests a coordinated approach to water resource management and climate resilience efforts. Enthusiasts of water resources and climate change will find Floyd Hall's historical significance and regulatory framework intriguing for further study and analysis.
As a key infrastructure in South Dakota's water resource system, Floyd Hall plays a vital role in flood control, water storage, and environmental protection along the TR-Moreau River. With its modest storage capacity and operational history dating back to the mid-20th century, this privately owned dam represents a valuable asset in the region's water management strategy. By exploring the specifics of its design, construction, and regulatory oversight, water resource and climate enthusiasts can gain insights into the complexities of maintaining and securing critical infrastructure in the face of changing environmental conditions and increasing water resource demands.
Year Completed |
1957 |
Dam Length |
600 |
Dam Height |
22 |
River Or Stream |
TR-MOREAU RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Nid Storage |
88 |
Hazard Potential |
Low |
Nid Height |
22 |
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.
Floyd Hall