Frank-Ruby Reservoir Report
Nearby: Earl Pullins Rose Karnen
Last Updated: December 6, 2025
Frank-Ruby is a private dam located in Perkins, South Dakota, along the TR-MOREAU RIVER.
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Summary
Built in 1955, this earth dam stands at 25 feet high and has a length of 320 feet. Managed by the Natural Resources Conservation Service, Frank-Ruby has a maximum storage capacity of 60 acre-feet and a normal storage of 42 acre-feet. With a low hazard potential, the dam has not been rated for its condition assessment.
Despite being a privately owned structure, Frank-Ruby is regulated by the South Dakota Department of Environment and Natural Resources (DENR), with state permitting, inspection, and enforcement in place. The dam is situated within the jurisdiction of South Dakota and falls under the oversight of the Omaha District of the US Army Corps of Engineers. With Dusty Johnson serving as the Congressional Representative for the area, Frank-Ruby plays a crucial role in water resource management and climate resilience efforts in the region.
While specific details about the dam's purposes and associated structures are not provided, Frank-Ruby remains a key infrastructure for water resource management in South Dakota. As a climate enthusiast, understanding the significance of dams like Frank-Ruby in regulating water flow, preventing floods, and ensuring water supply sustainability is essential. With its historical construction and continued regulatory oversight, Frank-Ruby stands as a testament to the importance of maintaining and monitoring critical water infrastructure for the benefit of communities and the environment.
Year Completed |
1955 |
Dam Length |
320 |
Dam Height |
25 |
River Or Stream |
TR-MOREAU RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
60 |
Hazard Potential |
Low |
Nid Height |
25 |
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.
Frank-Ruby