White Ranch Reservoir Report
Nearby: Herman Kaubish Dam Vern Anders
Last Updated: December 6, 2025
White Ranch is a privately owned dam located in Perkins, South Dakota, along the TR Moreau River.
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Summary
Constructed in 1958 by the Natural Resources Conservation Service, this earth dam stands at 21 feet high and has a storage capacity of 59 acre-feet. With a low hazard potential and a condition assessment of "Not Rated," White Ranch serves as a vital water resource for the surrounding area.
Managed by the South Dakota Department of Environment and Natural Resources, White Ranch is regulated, permitted, inspected, and enforced to ensure its safety and compliance with state guidelines. With a maximum discharge of 250 cubic feet per second, this dam plays a crucial role in flood control and water management in the region. Despite not having a formal Emergency Action Plan in place, White Ranch continues to provide valuable protection and support for its stakeholders.
As a part of the St. Paul District of the US Army Corps of Engineers, White Ranch contributes to the overall water infrastructure of South Dakota. With its strategic location and functional design, this dam continues to be a key player in water resource management and climate resilience efforts in the area.
Year Completed |
1958 |
Dam Length |
400 |
Dam Height |
21 |
River Or Stream |
TR MOREAU RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
21 |
Nid Storage |
59 |
Hazard Potential |
Low |
Nid Height |
21 |
Seasonal Comparison
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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.
White Ranch