Scs-Whitegrass-Waterhole Cr Site-8 Reservoir Report
Last Updated: December 5, 2025
SCS-Whitegrass-Waterhole Cr Site-8, located in McCurtain, Oklahoma, is a privately owned earth dam designed by the USDA NRCS for flood risk reduction on the Garvin Creek.
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Summary
Completed in 1961, this structure stands at a height of 32 feet and has a length of 900 feet, providing a maximum storage capacity of 1677 acre-feet and a normal storage capacity of 103 acre-feet. With a controlled spillway and a low hazard potential, this dam serves as a crucial infrastructure for managing water resources in the region.
Despite its age, SCS-Whitegrass-Waterhole Cr Site-8 has not been rated for its current condition and has not undergone recent inspections. The dam's emergency action plan status, risk assessment, and risk management measures are also unclear. Nevertheless, its primary purpose of flood risk reduction and the presence of one valve outlet gate suggest a level of operational functionality. As water resource and climate enthusiasts, monitoring and evaluating the maintenance and safety of this dam will be essential to ensure its continued effectiveness in protecting the surrounding area from potential flooding events.
In an area represented by Congressman Markwayne Mullin, the presence of SCS-Whitegrass-Waterhole Cr Site-8 highlights the importance of sustainable water management practices in a region prone to high flood risks. With potential modifications and enhancements, this dam can continue to serve as a vital asset for water resource management and climate resilience in McCurtain, Oklahoma.
Year Completed |
1961 |
Dam Length |
900 |
Dam Height |
32 |
River Or Stream |
GARVIN CR |
Primary Dam Type |
Earth |
Surface Area |
28 |
Hydraulic Height |
32 |
Nid Storage |
1677 |
Structural Height |
32 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little River Blw Lukfata Creek
|
572cfs |
Glover River Near Glover
|
342cfs |
Mountain Fork Near Eagletown
|
2040cfs |
Red River Near De Kalb
|
1160cfs |
Cuthand Ck At Fm 910 Nr Cuthand
|
0cfs |
Little River Near Horatio
|
3450cfs |
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.
Scs-Whitegrass-Waterhole Cr Site-8