Nichols Number 2 Reservoir Report
Last Updated: December 12, 2025
Nichols Number 2 is a private-owned dam located in Jones, South Dakota, with a state-regulated status and jurisdiction.
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Summary
Constructed in 1958, this earth dam stands at a height of 27 feet and spans a length of 680 feet, providing a storage capacity of 61 acre-feet. Situated along the TR-WHITERIVER, the dam serves a primary purpose that is not specified in the available data, but it is known to have a low hazard potential with a condition assessment of "Not Rated."
Managed by the Natural Resources Conservation Service, Nichols Number 2 has a maximum discharge capacity of 4200 cubic feet per second and a normal storage capacity of 40 acre-feet. While the dam's emergency action plan status and risk assessment details are not provided, it operates under state-permitting, inspection, and enforcement regulations. Despite its low hazard potential, the dam's risk management measures, inspection frequency, and condition assessment date are not reported, making it crucial for water resource and climate enthusiasts to stay informed about this structure in South Dakota.
Year Completed |
1958 |
Dam Length |
680 |
Dam Height |
27 |
River Or Stream |
TR-WHITERIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
27 |
Nid Storage |
61 |
Hazard Potential |
Low |
Nid Height |
27 |
Seasonal Comparison
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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.
Nichols Number 2