Sd Noname 231 Reservoir Report
Nearby: Sd Noname 232 Ward Vanhorn
Last Updated: December 6, 2025
Sd Noname 231 is a privately owned dam located in Harding, South Dakota, along a tributary to Sand Creek.
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Summary
Completed in 1952, this earthen dam stands at a height of 16 feet and has a storage capacity of 59 acre-feet. With a low hazard potential and a condition assessment of "Not Rated," this dam plays a crucial role in water resource management in the region.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Sd Noname 231 is subject to state regulation, permitting, inspection, and enforcement. While the dam has not been rated for its condition, it continues to serve its primary purpose effectively, ensuring water supply reliability and flood control for the surrounding area. Additionally, the dam falls under the jurisdiction of Dusty Johnson (R), the congressional representative for the region.
As a significant infrastructure asset in the area, Sd Noname 231 contributes to the overall water resource management efforts in South Dakota. With its strategic location and design, this dam plays a crucial role in safeguarding against potential risks and ensuring the sustainable use of water resources for the local community. Despite its low hazard potential, ongoing monitoring and maintenance are essential to uphold the dam's integrity and resilience in the face of changing climate conditions.
Year Completed |
1952 |
Dam Length |
190 |
Dam Height |
16 |
River Or Stream |
TRIBUTARY TO SAND CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
16 |
Nid Storage |
59 |
Hazard Potential |
Low |
Nid Height |
16 |
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 231