Mooney 1 Reservoir Report
Last Updated: December 5, 2025
Mooney 1 is a privately owned earth dam located in Meade, South Dakota that was completed in 1960.
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Summary
With a height of 15 feet and a length of 610 feet, this dam serves the primary purpose of water storage, with a capacity of 56 acre-feet. It is regulated by the South Dakota Department of Environment and Natural Resources, with state permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations.
The dam sits on the TR-BELLE FOURCHE river, within the jurisdiction of the state, and is classified as having low hazard potential. While the condition assessment is marked as "Not Rated," the dam meets all state regulations, including emergency action plans and risk management measures. The associated federal agency involved in the design of Mooney 1 is the Natural Resources Conservation Service, with no federal funding, construction, or regulatory involvement.
Overall, Mooney 1 is a crucial water resource structure in South Dakota, contributing to water storage and management in the region. Climate and water resource enthusiasts will find interest in its design, purpose, and regulatory framework, demonstrating the importance of dam infrastructure in supporting water supply and environmental sustainability.
Year Completed |
1960 |
Dam Length |
610 |
Dam Height |
15 |
River Or Stream |
TR-BELLE FONot RatedCHE |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
56 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Belle Fourche River Near Elm Springs
|
17900cfs |
Belle Fourche R Near Sturgis Sd
|
34cfs |
Elk Cr Near Elm Springs Sd
|
0cfs |
Elk Cr Nr Rapid City Sd
|
3cfs |
Horse Cr Above Vale Sd
|
13cfs |
Cheyenne River Near Wasta
|
190cfs |
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.
Mooney 1