Mcquistion West Dam Reservoir Report
Nearby: Mcquistion East Dam Bob Stoeser Dam
Last Updated: December 14, 2025
Mcquistion West Dam, located in Stanley, South Dakota, is a privately-owned earth dam that was completed in 2004.
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Summary
With a height of 28 feet and a length of 660 feet, this dam serves the primary purpose of water resource management on TR. Willow Creek. The dam has a storage capacity of 136 acre-feet, with a maximum discharge of 1025 cubic feet per second and a spillway width of 100 feet.
Managed by the USDA NRCS, Mcquistion West Dam is regulated by the South Dakota Department of Agriculture and Natural Resources. Despite being categorized as having a low hazard potential and being in moderate risk, the dam's condition assessment is currently not rated. This dam plays a crucial role in controlling water flow and ensuring water availability for irrigation and other purposes in the region. With its location in a scenic area of South Dakota, Mcquistion West Dam is not only a practical structure for water management but also a site of interest for water resource and climate enthusiasts.
Year Completed |
2004 |
Dam Length |
660 |
Dam Height |
28 |
River Or Stream |
TR. WILLOW CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
28 |
Drainage Area |
1 |
Nid Storage |
136 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
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.
Mcquistion West Dam