Knox Number 2 Reservoir Report
Last Updated: December 6, 2025
Knox Number 2 is a privately-owned earth dam located in Jones, South Dakota, along the TR-Bad River.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1954 and standing at a height of 26 feet, this dam serves a critical role in water resource management in the area. With a storage capacity of 49 acre-feet, it helps regulate water flow and provides crucial support for agricultural activities in the region.
Managed by the Natural Resources Conservation Service, Knox Number 2 has been deemed to have a low hazard potential and its condition has not been formally assessed. Despite this, the dam plays a vital role in maintaining water levels and ensuring water security for local communities. With its state-regulated status and the presence of inspection, permitting, and enforcement protocols in place, Knox Number 2 exemplifies responsible dam management in the face of climate challenges.
Representing a piece of South Dakota's water infrastructure, Knox Number 2 stands as a testament to the importance of sustainable water resource management. As climate change impacts continue to affect water availability and quality, dams like Knox Number 2 play a crucial role in ensuring water security for both agricultural and residential needs. With its history dating back to the mid-20th century, this dam serves as a reminder of the ongoing efforts to balance water resource utilization and conservation in the face of a changing climate.
Year Completed |
1954 |
Dam Length |
300 |
Dam Height |
26 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
49 |
Hazard Potential |
Low |
Nid Height |
26 |
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.
Knox Number 2