Salmen No.1 Reservoir Report
Nearby: Salem No.2 Gilbert No.1
Last Updated: December 6, 2025
Salmen No.1 is a privately owned earth dam located in Harding, South Dakota, along the TR-South Fork Grand River.
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Summary
Built in 1936, this dam stands at a height of 15 feet and has a length of 790 feet, providing a storage capacity of 450 acre-feet. While it is regulated by the South Dakota Department of Environment and Natural Resources (DENR), the dam is categorized as having low hazard potential and is currently rated as "Not Rated" in terms of condition assessment.
Although Salmen No.1 does not have a designated primary purpose, it serves as a vital infrastructure for water resource management in the region. With a maximum discharge capacity of 420 cubic feet per second, this dam plays a crucial role in flood control and water storage for the surrounding area. Despite not having a formal Emergency Action Plan (EAP) in place, Salmen No.1 has not undergone any recent modifications and is deemed to meet regulatory guidelines for safety and operation.
For water resource and climate enthusiasts, Salmen No.1 represents a key structure in the management of water resources in South Dakota. Its historical significance, low hazard potential, and strategic location along the TR-South Fork Grand River underscore the importance of maintaining and monitoring this earth dam to ensure its continued functionality and safety for the surrounding community and environment.
Year Completed |
1936 |
Dam Length |
790 |
Dam Height |
15 |
River Or Stream |
TR-SOUTH FORK GRAND RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
450 |
Hazard Potential |
Low |
Nid Height |
15 |
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.
Salmen No.1