Hnot Ratedst Number 3 Reservoir Report
Last Updated: December 7, 2025
Hnot Ratedst Number 3 is a privately owned dam located in South Dakota, specifically in Jones County.
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Summary
Completed in 1958, this Earth-type dam stands at 28 feet high and spans 282 feet in length, with a storage capacity of 26 acre-feet. Situated on the TR-BAD RIVER, this structure is regulated by the state's Department of Environment and Natural Resources (DENR), with inspection, permitting, and enforcement procedures in place to ensure its safety and compliance with regulations.
Despite its low hazard potential, Hnot Ratedst Number 3 has not been officially rated in terms of its condition assessment. The dam is under the jurisdiction of the state and is subject to periodic inspections, although the last inspection date is not specified in the available data. The dam's emergency action plan status, risk assessment, and management measures are also not detailed, leaving some uncertainty regarding its preparedness for potential hazards.
Managed by the Natural Resources Conservation Service, Hnot Ratedst Number 3 serves a critical purpose in water resource management and flood control. With its location in a key watershed area, this dam plays a vital role in maintaining water levels, providing irrigation, and protecting downstream communities from potential flooding events. As an integral part of the local infrastructure, ongoing monitoring and maintenance are essential to ensure the continued safety and effectiveness of Hnot Ratedst Number 3 for both water resource and climate enthusiasts in the region.
Year Completed |
1958 |
Dam Length |
282 |
Dam Height |
28 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
28 |
Nid Storage |
26 |
Hazard Potential |
Low |
Nid Height |
28 |
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 3