Standing Rock Tribe Reservoir Report
Nearby: Gerald Martian Chris Mehloff
Last Updated: December 14, 2025
The Standing Rock Tribe in South Dakota is the proud owner of a crucial water supply dam situated on the High Bank Creek.
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Summary
Completed in 1940, this earth dam stands at a height of 20 feet and has a length of 570 feet, providing a storage capacity of 192 acre-feet. The dam serves as a vital source of water for the tribe, reflecting its primary purpose as a water supply structure.
With a low hazard potential and a condition assessment that is not rated, the Standing Rock Tribe's dam underscores the importance of maintaining and monitoring water resources for the community's benefit. Despite not being regulated or permitted by the state, the tribe's ownership and management of the dam highlight their commitment to ensuring access to clean and reliable water for their residents. As water resource and climate enthusiasts, the Standing Rock Tribe's efforts in maintaining this essential infrastructure serve as a reminder of the critical role that tribes play in safeguarding water resources for future generations.
Year Completed |
1940 |
Dam Length |
570 |
Dam Height |
20 |
River Or Stream |
HIGH BANK CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
192 |
Structural Height |
20 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Grand R At Little Eagle Sd
|
47cfs |
Moreau R Near Whitehorse Sd
|
35cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
Cedar Creek Nr Raleigh
|
20cfs |
Cannonball River Nr Raleigh
|
40cfs |
Cannonball River At Breien
|
96cfs |
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