Iversen Number 1 Reservoir Report
Nearby: Iversen Dam Iversen Number 2
Last Updated: December 8, 2025
Iversen Number 1 is a private dam located in Jones, South Dakota, along the TR-BAD River.
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Summary
Built in 1953 by the Natural Resources Conservation Service, this earth dam stands at a height of 25 feet and has a length of 507 feet. With a storage capacity of 64 acre-feet and a maximum discharge of 1134 cubic feet per second, this dam serves multiple purposes including flood control, irrigation, and water supply for the surrounding area.
Despite being classified as a low hazard potential, the condition of Iversen Number 1 has not been officially rated. However, it is regularly inspected, permitted, and regulated by the South Dakota Department of Environment and Natural Resources (DENR). The dam has not undergone any significant modifications since its construction, and there are no associated structures or locks present. This vital water resource infrastructure plays a crucial role in managing water resources in the region and ensuring the safety of nearby communities.
With its strategic location and functional design, Iversen Number 1 holds a significant place in the water resource management of South Dakota. As climate change continues to impact water availability and quality, the proper maintenance and regulation of dams like Iversen Number 1 become increasingly important. By staying informed about the condition and management of such structures, water resource and climate enthusiasts can contribute to the sustainability and resilience of water systems in the face of changing environmental conditions.
Year Completed |
1953 |
Dam Length |
507 |
Dam Height |
25 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
64 |
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.
Iversen Number 1