Scs-Whitegrass-Waterhole Cr Site-7 Reservoir Report
Last Updated: December 5, 2025
SCS-Whitegrass-Waterhole Cr Site-7 in McCurtain, Oklahoma, is a state-regulated earth dam designed by USDA NRCS for flood risk reduction on the TR-Garvin Cr river/stream.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 1960, this 25-foot tall structure with a length of 475 feet has a storage capacity of 185 acre-feet and a normal storage capacity of 18 acre-feet. With a controlled spillway and one valve outlet gate, it has a low hazard potential and is currently in "Not Rated" condition as per the last inspection in 1980.
Located in Iron Stob Corner, SCS-Whitegrass-Waterhole Cr Site-7 is under the jurisdiction of the Oklahoma Water Resources Board (OWRB) and falls within the Fort Worth District of the US Army Corps of Engineers. Although the dam is state-owned and operated, it receives funding from the Natural Resources Conservation Service for its maintenance and operations. While the risk assessment categorizes it as very high, the dam is not currently deemed to meet guidelines for emergency action plans, and there are no inundation maps prepared or risk management measures in place.
Enthusiasts of water resources and climate will find SCS-Whitegrass-Waterhole Cr Site-7 an intriguing case study for its historical significance, structural design, and risk assessment profile. As a vital infrastructure for flood risk reduction in Oklahoma, this earth dam plays a crucial role in water resource management and environmental protection in the region. With its unique features and regulatory oversight, it offers valuable insights into the challenges and opportunities of managing water resources in a changing climate.
Year Completed |
1960 |
Dam Length |
475 |
Dam Height |
25 |
River Or Stream |
TR-GARVIN CR |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
25 |
Nid Storage |
185 |
Structural Height |
25 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
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 |
Red River At Arthur City
|
1640cfs |
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-7