Wedean Number 1 Reservoir Report
Nearby: Brost Number 9 Esmay And Sandy #2
Last Updated: December 7, 2025
Wedean Number 1, located in Jones, South Dakota, is a private earth dam with a height of 32 feet and a length of 672 feet.
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Summary
Completed in 1959, this dam has a storage capacity of 178 acre-feet and serves the primary purpose of water resource management in the area. The dam is regulated by the South Dakota Department of Environment and Natural Resources and undergoes regular inspections to ensure its structural integrity.
Managed by the Natural Resources Conservation Service, Wedean Number 1 is situated on the TR-White River and has a low hazard potential with a condition assessment currently marked as "Not Rated." Despite this, the dam plays a crucial role in flood control and water storage, with a maximum discharge capacity of 2835 cubic feet per second. While the dam's emergency action plan status and risk assessment measures are currently unspecified, its importance in managing water resources in the region cannot be understated.
Overall, Wedean Number 1 stands as a testament to the collaborative efforts between private owners and state regulatory agencies to maintain the safety and efficiency of water infrastructure in South Dakota. With its strategic location and vital role in water management, this dam exemplifies the importance of effective dam regulation and maintenance practices in ensuring the sustainability of water resources in the face of changing climate conditions.
Year Completed |
1959 |
Dam Length |
672 |
Dam Height |
32 |
River Or Stream |
TR-WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
32 |
Nid Storage |
178 |
Hazard Potential |
Low |
Nid Height |
32 |
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.
Wedean Number 1