Tribe No.10 Reservoir Report
Nearby: E. Hunt W. Holmes No.3
Last Updated: December 6, 2025
Tribe No.10 is a vital water supply infrastructure located in Ziebach, South Dakota, along the TR CHEYENNE river.
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Summary
Built in 1957, this earth dam stands at 23 feet in height and spans 600 feet in length, with a storage capacity of 104 acre-feet. The dam serves the primary purpose of supplying water to the local community, ensuring a reliable source of water for agricultural, industrial, and residential needs.
Managed by the Natural Resources Conservation Service, Tribe No.10 has a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment. Despite not being state-regulated or inspected, the dam continues to provide essential water storage and flow regulation functions for the region. With a maximum discharge capacity of 2100 cubic feet per second, the dam plays a crucial role in mitigating flood risks and ensuring water availability during dry periods.
While Tribe No.10 may not be widely recognized, its significance in supporting water resource management and climate resilience in South Dakota cannot be understated. As climate change impacts continue to pose challenges to water availability and quality, structures like Tribe No.10 play a key role in safeguarding water resources for the present and future generations.
Year Completed |
1957 |
Dam Length |
600 |
Dam Height |
23 |
River Or Stream |
TR CHEYENNE |
Primary Dam Type |
Earth |
Hydraulic Height |
23 |
Nid Storage |
104 |
Structural Height |
23 |
Hazard Potential |
Low |
Nid Height |
23 |
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.
Tribe No.10