Jack Bastain Reservoir Report
Nearby: Arnt Jorgenson C&F Ranch
Last Updated: December 6, 2025
Jack Bastain is a privately owned earth dam located in Perkins, South Dakota, along the TR Moreau River.
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Summary
Constructed in 1955 by the Natural Resources Conservation Service, this dam stands at a height of 22 feet and spans a length of 460 feet. With a maximum storage capacity of 89 acre-feet and a normal storage of 62 acre-feet, Jack Bastain serves as a vital water resource for the surrounding area.
Despite being classified as a low hazard potential structure, Jack Bastain is regulated by the South Dakota Department of Environment and Natural Resources, ensuring that it meets state permitting, inspection, and enforcement requirements. Although its condition assessment is currently listed as "Not Rated," the dam continues to play a crucial role in managing water flow and protecting against potential flooding along the TR Moreau River. With its strategic location and historical significance, Jack Bastain remains a key feature in South Dakota's water resource infrastructure.
As an essential part of the St. Paul District under the US Army Corps of Engineers, Jack Bastain represents a testament to the ongoing efforts to maintain and regulate water resources in the region. With its rich history, impressive design, and commitment to safety and environmental protection, this dam serves as a beacon for water resource and climate enthusiasts alike, showcasing the importance of responsible water management practices in the face of changing climate conditions.
Year Completed |
1955 |
Dam Length |
460 |
Dam Height |
22 |
River Or Stream |
TR MOREAU RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Nid Storage |
89 |
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.
Jack Bastain