Sd Noname 108 Reservoir Report
Nearby: Geigle Dam Hoffman Dam
Last Updated: December 6, 2025
Sd Noname 108 is a private dam located in Pennington, South Dakota, along the TR-CHEYENNE river.
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Summary
Built in 1935, this earth dam stands at a height of 15 feet and spans 700 feet in length. With a storage capacity of 85 acre-feet, the dam serves as a crucial water resource infrastructure in the region, providing irrigation and flood control benefits.
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Sd Noname 108 is regulated, permitted, inspected, and enforced by the state agency. Despite its low hazard potential, the dam's condition assessment is currently "Not Rated." The dam has a maximum discharge capacity of 2500 cubic feet per second and has a normal storage level of 55 acre-feet.
Sd Noname 108 plays a vital role in water management in South Dakota, offering essential services while also being mindful of environmental and safety concerns. Its strategic location and efficient design make it a significant asset for the region's water resource and climate enthusiasts to monitor and appreciate.
Year Completed |
1935 |
Dam Length |
700 |
Dam Height |
15 |
River Or Stream |
TR-CHEYENNE |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
85 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
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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 108