Perault Number 6 Reservoir Report
Nearby: Perault Number 1 Perault Number 5
Last Updated: December 7, 2025
Perault Number 6, located in Jones, South Dakota, along the TR-WHITE RIVER, is a private earth dam completed in 1941 with a height of 25 feet and a length of 345 feet.
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Summary
This dam has a normal storage capacity of 18 acre-feet and a maximum discharge rate of 945 cubic feet per second. Despite being of low hazard potential, the dam has not been rated for its condition and lacks recent inspection data.
Owned and regulated by a private entity, the dam falls under the jurisdiction of the South Dakota Department of Environment and Natural Resources (DENR). While the dam is permitted, inspected, and enforced by state authorities, its emergency action plan (EAP) status, risk assessment, and management measures remain undisclosed. The overall risk and safety of the dam are currently unclear, as there is limited information available regarding its condition and emergency preparedness.
As a water resource and climate enthusiast, the data on Perault Number 6 raises questions about the dam's structural integrity, maintenance practices, and emergency response capabilities. With its outdated completion date and lack of recent assessments, there is a need for further examination and transparency regarding the safety measures in place for this crucial infrastructure. The unique location and design of this dam make it an important asset to monitor and ensure its continued functionality for water management in the region.
Year Completed |
1941 |
Dam Length |
345 |
Dam Height |
25 |
River Or Stream |
TR-WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
26 |
Hazard Potential |
Low |
Nid Height |
25 |
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 6