Nix Number 4 Reservoir Report
Nearby: Hight Number 2 Iversen Number 1
Last Updated: December 8, 2025
Nix Number 4 is a privately owned earth dam located in Jones, South Dakota, with a low hazard potential and a height of 27 feet.
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Summary
Completed in 1960, this dam serves multiple purposes, including water storage with a capacity of 31 acre-feet. Managed by the Natural Resources Conservation Service, Nix Number 4 is regulated, permitted, inspected, and enforced by the South Dakota Department of Environment and Natural Resources.
Situated on the TR-WHITERIVER, Nix Number 4 plays a crucial role in controlling the flow of water and protecting the surrounding area from potential flooding events. With a maximum discharge capacity of 625 cubic feet per second, this dam ensures the safety and stability of the local community. Despite its age, the condition of Nix Number 4 is currently not rated, indicating a need for further assessment and potentially updating its emergency action plan to meet modern guidelines.
As a key component of water resource management in South Dakota, Nix Number 4 stands as a testament to the importance of maintaining and monitoring dams to ensure their continued effectiveness and safety. Climate enthusiasts and water resource professionals alike can appreciate the role this dam plays in safeguarding the environment and local infrastructure from the impacts of extreme weather events and changing climate patterns.
Year Completed |
1960 |
Dam Length |
276 |
Dam Height |
27 |
River Or Stream |
TR-WHITERIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
27 |
Nid Storage |
31 |
Hazard Potential |
Low |
Nid Height |
27 |
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.
Nix Number 4