Halligan #1 Reservoir Report
Nearby: Bettcher Number 1 Pitan Dam
Last Updated: December 13, 2025
Halligan #1 is a privately owned earth dam located in South Dakota, specifically in Jones County.
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Summary
Completed in 1976, this dam serves as a crucial water resource structure along the tributary of the White River. With a height of 31 feet and a length of 605 feet, Halligan #1 has a storage capacity of 118 acre-feet, providing essential water storage for the surrounding area.
Managed by the Natural Resources Conservation Service, Halligan #1 is regulated by the South Dakota Department of Environment and Natural Resources. Despite its low hazard potential and ungraded condition assessment, the dam plays a significant role in water management and conservation efforts in the region. With state permitting, inspection, and enforcement in place, Halligan #1 ensures the safety and sustainability of the water resources it controls.
While Halligan #1 may not be widely known, its impact on the local ecosystem and water supply is undeniable. As climate change continues to affect water resources, structures like Halligan #1 become increasingly important for ensuring water security and resilience in the face of changing environmental conditions. This dam stands as a testament to the vital role that private water resource structures play in safeguarding our natural resources for future generations.
Year Completed |
1976 |
Dam Length |
605 |
Dam Height |
31 |
River Or Stream |
TRIB. WHITE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
31 |
Nid Storage |
118 |
Hazard Potential |
Low |
Nid Height |
31 |
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.
Halligan #1