Tribe No.3 Reservoir Report
Nearby: Hulm M. Matthews
Last Updated: December 7, 2025
Tribe No.3 is a crucial water supply dam located in Ziebach, South Dakota, along the TR MOREAU river.
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Summary
Built in 1952 by the Natural Resources Conservation Service, this earth-type dam stands at a height of 20 feet and spans 450 feet in length. With a storage capacity of 140 acre-feet, Tribe No.3 serves as a vital resource for the surrounding Tribal Government and community.
Despite its age, Tribe No.3 has a low hazard potential and has not been rated for its current condition. However, the dam continues to fulfill its primary purpose of providing water supply to the region. Situated in a remote area with no associated structures, this dam plays a critical role in water management and conservation efforts in South Dakota.
As water resource and climate enthusiasts, it is important to monitor and maintain dams like Tribe No.3 to ensure their continued functionality and safety. With a focus on water supply and a rich history dating back to the 1950s, this dam serves as a testament to the importance of infrastructure in sustaining communities and ecosystems in the face of changing environmental conditions.
Year Completed |
1952 |
Dam Length |
450 |
Dam Height |
20 |
River Or Stream |
TR MOREAU |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
140 |
Structural Height |
20 |
Hazard Potential |
Low |
Nid Height |
20 |
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.3