Hnot Ratedst Number 2 Reservoir Report
Nearby: Peters Number 1 Hnot Ratedst Number 1
Last Updated: December 6, 2025
Hnot Ratedst Number 2, located in Jones, South Dakota, is a privately owned dam on the TR-BAD RIVER, with a primary purpose and dam type of Earth.
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Summary
Constructed in 1955, this dam stands at a height of 26 feet and has a storage capacity of 23 acre-feet. It is regulated by the South Dakota Department of Environment and Natural Resources (DENR) and undergoes regular inspections, enforcement, and permitting to ensure its safety and compliance with state regulations.
Despite being classified as having a low hazard potential, the condition of Hnot Ratedst Number 2 is currently listed as "Not Rated". This suggests that the dam's structural integrity and safety measures have not been formally assessed or evaluated. While there is no emergency action plan (EAP) in place for this dam, it is reassuring to note that it meets state guidelines and has not experienced any modifications or significant risk assessments in recent years. Overall, Hnot Ratedst Number 2 serves as a vital water resource infrastructure in South Dakota, contributing to flood control and water supply management in the region.
Year Completed |
1955 |
Dam Length |
378 |
Dam Height |
26 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
23 |
Hazard Potential |
Low |
Nid Height |
26 |
Seasonal Comparison
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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.
Hnot Ratedst Number 2