Scs-Cherokee Sandy Site-14 Reservoir Report
Last Updated: December 9, 2025
SCS-Cherokee Sandy Site-14, located in Wynnewood, Oklahoma, is a state-regulated earth dam designed by USDA NRCS in 1962 for flood risk reduction along the TR-Cherokee Sandy Creek.
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Summary
With a dam height of 32 feet and a maximum storage capacity of 370 acre-feet, this structure plays a crucial role in mitigating potential flooding in the area. The dam's controlled spillway, outlet gate, and low hazard potential make it a key component of water resource management in Garvin County.
Despite being constructed almost six decades ago, SCS-Cherokee Sandy Site-14 continues to meet state inspection requirements, with a low hazard potential and a very high risk assessment rating. The dam's primary purpose remains flood risk reduction, with a normal storage capacity of 37 acre-feet and a structural height of 32 feet. While the dam's condition assessment is currently not rated, its strategic location and design by the Natural Resources Conservation Service highlight its importance in safeguarding the local community and surrounding areas from potential flood events.
With its stone core and soil foundation, SCS-Cherokee Sandy Site-14 stands as a testament to effective water resource management and infrastructure development in Oklahoma. The dam's association with the Tulsa District of the USACE and its regulation by the OWRB underscore the collaborative efforts involved in ensuring the safety and resilience of water systems in the region. As climate change continues to impact water resources, structures like SCS-Cherokee Sandy Site-14 play a vital role in protecting communities and ecosystems from the growing threats of flooding and water insecurity.
Year Completed |
1962 |
Dam Length |
1150 |
Dam Height |
32 |
River Or Stream |
TR-CHEROKEE SANDY CREEK |
Primary Dam Type |
Earth |
Surface Area |
10 |
Hydraulic Height |
28 |
Nid Storage |
370 |
Structural Height |
32 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
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 |
Little River Near Tecumseh
|
4cfs |
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-14