Tribe No.2 Reservoir Report
Nearby: B. Butler No.1 Roy Veit No.4
Last Updated: December 7, 2025
Tribe No.2, located in Ziebach, South Dakota, is a vital water supply dam managed by the Tribal Government.
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Summary
Built in 1956, this earth dam stands at a height of 23 feet and has a length of 570 feet, providing a storage capacity of 173 acre-feet. The dam's primary purpose is water supply, serving the local community and ensuring a reliable source of water for various uses.
Despite its low hazard potential and not yet rated condition assessment, Tribe No.2 plays a crucial role in water resource management in the region. The dam overlooks the TR MOREAU river and is under the jurisdiction of the St. Paul District. With a maximum discharge of 3000 cubic feet per second, the dam contributes to flood control efforts and ensures water availability during dry periods. The Natural Resources Conservation Service is responsible for its design, further highlighting its importance in sustainable water management practices.
As a key infrastructure for water supply in South Dakota, Tribe No.2 stands as a testament to the collaboration between federal agencies and tribal governments in ensuring water resource sustainability. With its historical significance and practical function, this dam serves as a symbol of resilience in the face of climate challenges. As water resource and climate enthusiasts, understanding the role of structures like Tribe No.2 is crucial in advocating for responsible water management practices and the protection of vital water sources for future generations.
Year Completed |
1956 |
Dam Length |
570 |
Dam Height |
23 |
River Or Stream |
TR MOREAU |
Primary Dam Type |
Earth |
Hydraulic Height |
23 |
Nid Storage |
173 |
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.2