D. Timmons Reservoir Report
Nearby: Timmons Wetland Dam R. Howie
Last Updated: December 5, 2025
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Summary
Timmons is a private earth dam located in Meade, South Dakota, along the TR CHEYENNE river. Built in 1973, this dam stands at a height of 24 feet and has a storage capacity of 77 acre-feet. While it has a low hazard potential, its condition assessment is currently listed as "Not Rated." The Natural Resources Conservation Service is responsible for its design, and the South Dakota Department of Environment and Natural Resources regulates its operation, inspection, and enforcement.
Despite not being federally owned or funded, D. Timmons plays a crucial role in water resource management in the region. With a maximum discharge of 2000 cubic feet per second, this dam helps regulate water flow and provides a reliable water supply for the surrounding area. While its emergency action plan status is unclear, the dam's location and low hazard potential suggest a relatively low risk to nearby communities in the event of a breach.
For water resource and climate enthusiasts, D. Timmons serves as an example of a privately owned dam that contributes to flood control and water storage in South Dakota. Its presence along the TR CHEYENNE river underscores the importance of proper regulation and maintenance to ensure the safety and effectiveness of such water infrastructure. As climate change continues to impact water resources, understanding and monitoring dams like D. Timmons will be crucial in adapting to changing environmental conditions and ensuring sustainable water management practices in the future.
Year Completed |
1973 |
Dam Length |
445 |
Dam Height |
24 |
River Or Stream |
TR CHEYENNE |
Primary Dam Type |
Earth |
Hydraulic Height |
24 |
Nid Storage |
77 |
Hazard Potential |
Low |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cheyenne R Near Plainview Sd
|
0cfs |
Belle Fourche River Near Elm Springs
|
17900cfs |
Elk Cr Near Elm Springs Sd
|
0cfs |
Cheyenne River Near Wasta
|
190cfs |
Moreau R Near Faith Sd
|
14cfs |
Belle Fourche R Near Sturgis Sd
|
34cfs |
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.
D. Timmons