Rose Ranch Dam Reservoir Report
Nearby: David Olson W.N. Barrick Estate
Last Updated: December 13, 2025
Rose Ranch Dam, located in Stanley, South Dakota, serves as a vital water resource structure along the tributary of Sansarc Creek.
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Summary
Completed in 1993, this private dam stands at a height of 19 feet and has a storage capacity of 117 acre-feet. With a low hazard potential and a moderate risk assessment rating, Rose Ranch Dam is equipped with an uncontrolled spillway that can handle a maximum discharge of 950 cubic feet per second.
Managed by the South Dakota Department of Agriculture and Natural Resources (DANR), Rose Ranch Dam is subject to state regulation, inspection, and enforcement. Despite its age, the dam's condition remains unrated, with the last inspection conducted in September 1999. While no emergency action plan or risk management measures are currently in place, the dam continues to provide essential water storage for the surrounding area, ensuring a stable water supply for agricultural and environmental purposes.
In the realm of water resource and climate management, Rose Ranch Dam stands as a key infrastructure in South Dakota's water system. With its strategic location and essential role in water storage, this earth dam serves as a testament to the importance of maintaining and regulating water structures to ensure the sustainability and resilience of our water resources in the face of changing climate conditions.
Year Completed |
1993 |
Dam Length |
420 |
Dam Height |
19 |
River Or Stream |
TRIB. SANSARC CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
19 |
Drainage Area |
1 |
Nid Storage |
117 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
19 |
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.
Rose Ranch Dam