Sd Noname 140 Reservoir Report
Nearby: Sd Noname 171 Sd Noname 172
Last Updated: December 6, 2025
Sd Noname 140 is a privately owned dam located in Jackson, South Dakota, with a critical role in water resource management.
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Summary
Built in 1950, this Earth-type dam stands at a height of 12 feet and has a storage capacity of 87 acre-feet, serving as a vital structure in regulating the flow of the TRIB. BAD RIVER. Despite its low hazard potential, the dam is state-regulated and undergoes regular inspections, enforcement, and permitting by the South Dakota Department of Environment and Natural Resources.
With a maximum discharge capacity of 900 cubic feet per second, Sd Noname 140 plays a crucial role in flood control and water supply management in the region. Although it is not rated for its condition assessment, the dam has not been modified in recent years and is designed to withstand various hydraulic pressures. Additionally, the surrounding area does not have inundation maps prepared, indicating the potential need for improved emergency preparedness measures in the event of a dam failure or flooding incident.
Overall, Sd Noname 140 represents a significant piece of infrastructure in South Dakota's water resource network, with its strategic location and design contributing to the overall water management system in the area. As climate change continues to impact water resources, dams like Sd Noname 140 will play a critical role in ensuring the sustainable use and conservation of water for both human consumption and environmental needs.
Year Completed |
1950 |
Dam Length |
800 |
Dam Height |
12 |
River Or Stream |
TRIB. BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
12 |
Nid Storage |
87 |
Hazard Potential |
Low |
Nid Height |
12 |
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.
Sd Noname 140