Perault Number 2 Reservoir Report
Nearby: Perault Number 3 Perault Number 4
Last Updated: December 6, 2025
Perault Number 2 is a privately owned earth dam located in Jones, South Dakota, along the TR-White River.
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Summary
Built in 1956 by the Natural Resources Conservation Service, this dam stands at a height of 26 feet and has a storage capacity of 21 acre-feet. With a low hazard potential and a condition assessment of "Not Rated," the dam serves as a vital infrastructure for water resource management in the area.
Despite being state regulated and inspected, the dam's emergency action plan (EAP) status, risk assessment, and management measures are currently unknown. The dam has not been modified in recent years and does not have any associated structures. With a normal storage capacity of 15 acre-feet and a maximum discharge rate of 882 cubic feet per second, Perault Number 2 plays a crucial role in flood control and water supply for the local community.
With its strategic location and role in managing water resources in the region, Perault Number 2 serves as a key asset for climate and water resource enthusiasts. As the dam continues to be monitored and regulated by the state, it remains an important structure for mitigating flood risks and ensuring water security for the surrounding areas along the TR-White River.
Year Completed |
1956 |
Dam Length |
258 |
Dam Height |
26 |
River Or Stream |
TR-WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
21 |
Hazard Potential |
Low |
Nid Height |
26 |
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 2