Standing Rock Tribe Reservoir Report
Nearby: Olson Dam Oscar Rische
Last Updated: December 13, 2025
Standing Rock Tribe is home to a vital water supply dam located in Wakpala, South Dakota.
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Summary
This Earth-type dam, completed in 1939, stands at a height of 21 feet and serves the primary purpose of water supply for the tribe. With a storage capacity of 118 acre-feet, the dam on TR-Oak Creek plays a crucial role in meeting the community's water needs, with a normal storage level of 65 acre-feet.
Managed by the tribal government, the Standing Rock Tribe dam has been deemed to have significant hazard potential and is currently not rated for its condition. Despite not being regulated or inspected by the state, the dam continues to provide essential water resources to the local population. The presence of this key infrastructure underscores the importance of sustainable water management practices in the face of climate change challenges.
As water resource and climate enthusiasts continue to advocate for the protection of water sources and the implementation of resilient infrastructure, the Standing Rock Tribe dam serves as a reminder of the critical role that dams play in ensuring water security for communities. With its historical significance and impact on the local ecosystem, efforts to monitor and maintain the dam's integrity are essential to safeguarding the tribe's water supply for generations to come.
Year Completed |
1939 |
Dam Length |
445 |
Dam Height |
21 |
River Or Stream |
TR-OAK CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
21 |
Nid Storage |
118 |
Structural Height |
21 |
Hazard Potential |
Significant |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Oak Cr Near Wakpala Sd
|
10cfs |
Grand R At Little Eagle Sd
|
47cfs |
Moreau R Near Whitehorse Sd
|
35cfs |
Cedar Creek Nr Raleigh
|
20cfs |
Beaver Creek Bl Linton
|
39cfs |
Cannonball River Nr Raleigh
|
40cfs |
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.
Standing Rock Tribe