Plum Creek Grazing Assn Reservoir Report
Nearby: Alvin Horman Hedman Number 1
Last Updated: December 6, 2025
Plum Creek Grazing Association, located in Stanley, South Dakota, is a privately owned earth dam structure that was completed in 1961.
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Summary
The dam, standing at 26 feet high and stretching 500 feet in length, serves the primary purpose of managing water resources by creating a reservoir on the tributary of Plum Creek. With a storage capacity of 29 acre-feet, the dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Plum Creek Grazing Association is subject to state regulations, permitting, inspection, and enforcement. The dam is under the jurisdiction of the state and has been designed by the Natural Resources Conservation Service. Despite not having a designated purpose or specific core types, the dam plays a crucial role in water management in the region, with a maximum discharge capacity of 625 cubic feet per second.
As water resource and climate enthusiasts, the presence of Plum Creek Grazing Association highlights the importance of sustainable water management practices in South Dakota. With its low hazard potential and state-regulated status, the dam serves as a vital infrastructure for preserving water resources and supporting agricultural activities in the region. As climate change continues to impact water availability, structures like Plum Creek Grazing Association play a crucial role in ensuring water security for both human and ecological needs.
Year Completed |
1961 |
Dam Length |
500 |
Dam Height |
26 |
River Or Stream |
TRIB. PLUM CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
29 |
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.
Plum Creek Grazing Assn