Robinson Dam Reservoir Report
Nearby: Allen Robinson Riedy Dam
Last Updated: December 6, 2025
Robinson Dam, located in Perkins, South Dakota, was completed in 1936 by the Works Progress Administration (WPA).
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Summary
This privately owned earth dam stands at 18 feet and spans a length of 350 feet, with a storage capacity of 250 acre-feet. The dam is situated on the TR-GRAND river/stream, under the jurisdiction of the South Dakota Department of Agriculture and Natural Resources (DANR).
Despite its age, Robinson Dam has a low hazard potential and a moderate risk assessment rating of 3. While the dam has not been rated for its condition, it is regularly inspected, permitted, and enforced by the state regulatory agencies. The spillway, with a width of 50 feet, is uncontrolled, and there are no outlet gates associated with the dam. The dam's primary purpose and other details such as surface area and drainage area are not specified in the data.
In the event of an emergency, the dam's Emergency Action Plan (EAP) status and risk management measures are not clearly defined. However, the dam's emergency contacts are updated, and it is noted to meet guidelines for risk assessment. Overall, Robinson Dam serves as a vital structure for water management in the region, maintaining a stable condition and providing essential storage for the surrounding area.
Year Completed |
1936 |
Dam Length |
350 |
Dam Height |
18 |
River Or Stream |
TR-GRAND |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
250 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
18 |
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.
Robinson Dam