Sd Noname 123 Reservoir Report
Nearby: Sd Noname 17 Sd Noname 125
Last Updated: December 13, 2025
Sd Noname 123 is a privately owned dam located in Haakon, South Dakota, along the tributary of Grindstone Creek.
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Summary
Built in 1961, this earth dam stands at a height of 21 feet and spans a length of 870 feet, providing a maximum storage capacity of 63 acre-feet. The dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR), with state permitting, inspection, and enforcement in place to ensure its safety and functionality.
Managed by a private owner, Sd Noname 123 has a low hazard potential and is currently rated as 'Not Rated' in terms of condition assessment. The dam serves various purposes, although specific details are not provided in the data. Despite its age, the dam has not undergone any modifications in recent years, and there is no available information on emergency action plans or risk management measures associated with the structure. With a maximum discharge capacity of 3900 cubic feet per second, the dam plays a crucial role in water resource management in the region, highlighting the importance of monitoring and maintaining its integrity for climate and water resource enthusiasts.
Year Completed |
1961 |
Dam Length |
870 |
Dam Height |
21 |
River Or Stream |
TRIB GRINDSTONE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
21 |
Nid Storage |
63 |
Hazard Potential |
Low |
Nid Height |
21 |
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 123