Perault Number 4 Reservoir Report
Nearby: Perault Number 1 Perault Number 6
Last Updated: December 7, 2025
Perault Number 4 is a privately owned earth dam located in Jones, South Dakota, along the TR-White River.
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Summary
Constructed in 1958 by the Natural Resources Conservation Service, this dam stands at 28 feet tall and spans 264 feet in length. With a storage capacity of 26 acre-feet and a maximum discharge of 567 cubic feet per second, Perault Number 4 serves as a vital water resource in the area.
Despite being classified as having a low hazard potential, the condition of Perault Number 4 is currently not rated. While the dam is regulated by the South Dakota Department of Environment and Natural Resources and undergoes regular inspections, the last assessment date is unknown. The dam does not have an emergency action plan in place, and there is limited information available on its risk management measures and mitigation strategies.
Water resource and climate enthusiasts will be intrigued by the history and technical specifications of Perault Number 4. As a key component of the local water infrastructure, this dam plays a crucial role in water storage and flood control along the TR-White River. However, further assessment and planning may be necessary to ensure the safety and effectiveness of this important water resource in South Dakota.
Year Completed |
1958 |
Dam Length |
264 |
Dam Height |
28 |
River Or Stream |
TR-WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
28 |
Nid Storage |
26 |
Hazard Potential |
Low |
Nid Height |
28 |
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.
Perault Number 4