Scs-Cherokee Sandy Site-13 Reservoir Report
Last Updated: December 9, 2025
SCS-Cherokee Sandy Site-13, located in Garvin, Oklahoma, is a state-regulated earth dam designed by the USDA NRCS for flood risk reduction along the TR-WOLF CREEK.
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Summary
Completed in 1962, this dam stands at a height of 23 feet and has a storage capacity of 139 acre-feet. With a controlled spillway and a single valve outlet gate, the dam is equipped to handle a maximum discharge of 560 cubic feet per second.
Despite being rated with a low hazard potential, the risk assessment for SCS-Cherokee Sandy Site-13 indicates a very high risk level, emphasizing the importance of regular inspections and maintenance. The dam's condition is currently not rated, with the last inspection date recorded in 1980. With the dam primarily serving the purpose of flood risk reduction, it is crucial for the state regulatory agency (OWRB) to ensure that necessary enforcement and inspection measures are in place to mitigate any potential risks associated with the structure.
As water resource and climate enthusiasts, understanding the intricacies of dams like SCS-Cherokee Sandy Site-13 is essential in safeguarding our environment and communities from the impacts of extreme weather events. By staying informed about the design, purpose, and condition of such critical infrastructure, we can contribute to the sustainable management of water resources and the mitigation of climate-related risks in our region.
Year Completed |
1962 |
Dam Length |
800 |
Dam Height |
23 |
River Or Stream |
TR-WOLF CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
20 |
Nid Storage |
139 |
Structural Height |
23 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Washita River Near Pauls Valley
|
335cfs |
Rock Creek At Sulphur
|
8cfs |
Walnut Creek At Purcell
|
29cfs |
Canadian River At Purcell
|
201cfs |
Pennington Creek Near Reagan
|
7cfs |
Washita River Near Dickson
|
324cfs |
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-Cherokee Sandy Site-13