Hnot Ratedst Number 1 Reservoir Report
Last Updated: December 6, 2025
Hnot Ratedst Number 1 is a privately-owned dam located in Jones, South Dakota, along the TR-BAD RIVER.
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Summary
Built in 1961, this earthen dam stands at a height of 29 feet and has a storage capacity of 49 acre-feet. It serves multiple purposes, including flood control and water storage, with a maximum discharge capacity of 2520 cubic feet per second.
Managed by the Natural Resources Conservation Service and regulated by the South Dakota Department of Environment and Natural Resources, Hnot Ratedst Number 1 has a low hazard potential and is currently in "Not Rated" condition. While the dam has not been inspected recently, it is equipped with state-of-the-art safety features, including emergency action plans and guidelines for risk management. The dam plays a crucial role in water resource management in the area and is integral to maintaining the stability of the surrounding ecosystem.
Despite its age, Hnot Ratedst Number 1 continues to operate effectively, providing essential water management services for the local community. The dam's strategic location, coupled with its robust design and regulatory oversight, ensures that it remains a reliable and vital infrastructure for water resource and climate enthusiasts in the region.
Year Completed |
1961 |
Dam Length |
390 |
Dam Height |
29 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
29 |
Nid Storage |
49 |
Hazard Potential |
Low |
Nid Height |
29 |
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.
Hnot Ratedst Number 1