Tribal Reservoir Report
Nearby: Hattum Dam Double Dam
Last Updated: December 11, 2025
Tribal is a significant Earth dam located in South Dakota, specifically in Stanley County.
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Summary
Built in 1957, Tribal serves as a crucial water supply source in the region, with a storage capacity of 63 acre-feet and a maximum discharge of 625 cubic feet per second. The dam stands at a height of 24 feet and has a length of 620 feet, providing essential water resources for the surrounding Tribal Government.
Managed by the Natural Resources Conservation Service, Tribal's primary purpose is water supply, catering to the needs of the local community. Despite its age, the dam has a low hazard potential and is currently rated as 'Not Rated' in terms of condition assessment. While Tribal has not been inspected recently, it continues to play a vital role in water resource management in the area.
With Dusty Johnson (R) as the representative for the Congressional district where Tribal is located, the dam represents a crucial piece of infrastructure for water supply and serves as a reminder of the importance of sustainable water resource management in the face of changing climate conditions. As water resource and climate enthusiasts, understanding the role of dams like Tribal in providing essential water supply services is essential for ensuring the resilience of communities in the face of water-related challenges.
Year Completed |
1957 |
Dam Length |
620 |
Dam Height |
24 |
River Or Stream |
TR-ANTELOPE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
24 |
Nid Storage |
63 |
Structural Height |
24 |
Hazard Potential |
Low |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bad R Near Fort Pierre Sd
|
7cfs |
White R Near Oacoma Sd
|
105cfs |
White River Near White River
|
42cfs |
Little White R Below White River Sd
|
141cfs |
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.
Tribal