Allen Robinson Reservoir Report
Nearby: Robinson Dam Riedy Dam
Last Updated: December 6, 2025
Allen Robinson is a private earth dam located in Perkins, South Dakota, along the TR-Grand River.
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Summary
Built in 1953, this dam stands at a height of 16 feet with a length of 630 feet, providing a storage capacity of 60 acre-feet. Managed by the Natural Resources Conservation Service, Allen Robinson is regulated by the South Dakota Department of Environment and Natural Resources, ensuring proper inspection, enforcement, and permitting processes are in place.
Despite its low hazard potential and current "Not Rated" condition assessment, Allen Robinson serves a vital role in water resource management in the region. With a normal storage capacity of 47 acre-feet and a maximum discharge of 744 cubic feet per second, this dam plays a crucial role in regulating water flow and preventing flooding in the area. Additionally, its location within the St. Paul District reinforces its importance in the overall water infrastructure of South Dakota.
While Allen Robinson may not pose a significant risk at present, ongoing monitoring and maintenance are essential to ensure its continued functionality and safety. With the potential for future modifications and improvements, this dam remains a key component in water resource management efforts in the region, highlighting the intersection of water conservation and climate resilience in South Dakota.
Year Completed |
1953 |
Dam Length |
630 |
Dam Height |
16 |
River Or Stream |
TR-GRAND RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
16 |
Nid Storage |
60 |
Hazard Potential |
Low |
Nid Height |
16 |
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.
Allen Robinson