Dimond Wendell No. 1 Reservoir Report
Nearby: Derry Robert No.1 Van Collons No.1
Last Updated: December 13, 2025
Dimond Wendell No.
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Summary
1 is a privately owned dam located in Mellette, South Dakota, with a primary purpose that is not specified in the available data. Completed in 1967, this earth dam stands at a height of 26 feet and has a length of 455 feet, providing a maximum storage capacity of 23 acre-feet. Situated on a tributary of the White River, this structure is regulated by the South Dakota Department of Environment and Natural Resources, ensuring that it undergoes regular inspections, permitting, and enforcement to maintain its safety and integrity.
With a low hazard potential and a current condition assessment of "Not Rated," Dimond Wendell No. 1 plays a crucial role in water resource management in the region. Although the dam's specifics such as spillway type and outlet gates are not provided, its presence contributes to flood control, water supply, and environmental protection efforts. As an integral part of the St. Paul District of the US Army Corps of Engineers, this dam serves as a vital infrastructure for the local community, while also offering valuable insights into the intersection of water resource management and climate resilience.
As enthusiasts in water resources and climate change, Dimond Wendell No. 1 presents an interesting case study for understanding the regulatory framework, design characteristics, and operational aspects of dams in South Dakota. With an emphasis on safety and compliance, this dam exemplifies the importance of proper management and maintenance practices in ensuring the long-term sustainability of water infrastructure. As climate variability continues to pose challenges to water resource management, the role of structures like Dimond Wendell No. 1 becomes increasingly significant in mitigating risks and promoting resilience in the face of changing environmental conditions.
Year Completed |
1967 |
Dam Length |
455 |
Dam Height |
26 |
River Or Stream |
TRIB. WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
23 |
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.
Dimond Wendell No. 1