George Hulm Reservoir Report
Nearby: Joe Wunder Joe Hulm
Last Updated: December 6, 2025
George Hulm, a privately owned dam located in Perkins, South Dakota, plays a crucial role in water resource management and climate resilience.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1955 by the Natural Resources Conservation Service, this earth dam stands at 16 feet high and spans 840 feet in length. With a storage capacity of 109 acre-feet and a maximum discharge of 400 cubic feet per second, George Hulm serves as a vital infrastructure for regulating the flow of the South Grand River, ensuring water availability for agricultural and environmental purposes.
Although categorized as having a low hazard potential, George Hulm is regulated, permitted, inspected, and enforced by the South Dakota Department of Environment and Natural Resources. Despite its age, the dam's condition is currently not rated, highlighting the need for further assessment and potential maintenance. Emergency action plans and risk management measures are yet to be fully documented, indicating the importance of proactive measures to safeguard the surrounding community in the event of a dam failure. As climate change continues to impact water resources, the role of dams like George Hulm in providing sustainable water management solutions becomes increasingly significant.
In the hands of private ownership and with support from federal agencies, George Hulm stands as a testament to collaborative efforts in water infrastructure development. As enthusiasts in water resource and climate resilience, understanding the intricacies of dams like George Hulm sheds light on the intersection of engineering, policy, and environmental stewardship in ensuring a secure water future for generations to come.
Year Completed |
1955 |
Dam Length |
840 |
Dam Height |
16 |
River Or Stream |
TR SOUTH GRAND RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
16 |
Nid Storage |
109 |
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.
George Hulm