Scs-Cherokee Sandy Site-08b Reservoir Report
Last Updated: December 8, 2025
SCS-Cherokee Sandy Site-08b, located in Garvin, Oklahoma, is a state-regulated structure designed by the USDA NRCS with a primary purpose of flood risk reduction.
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Summary
This stone-core dam stands at a height of 34 feet and was completed in 1963. With a maximum storage capacity of 362 acre-feet and a normal storage of 61 acre-feet, this dam plays a crucial role in controlling the flow of the TR-WILLOW SANDY CREEK.
Despite being classified as having a low hazard potential, the risk assessment for SCS-Cherokee Sandy Site-08b indicates a very high risk level. Although the condition assessment is not rated and the last inspection date dates back to 1980, the structure is regularly inspected with a frequency of every 5 years. The dam features a controlled spillway and a single valve outlet gate for water release. While the emergency action plan status and risk management measures are not specified, the dam is maintained by the state regulatory agency OWRB, ensuring its continued safety and functionality for the community of WYNNEWOOD.
Overall, SCS-Cherokee Sandy Site-08b serves as a vital component in managing flood risks in the area, despite facing a high level of risk. With a solid foundation of soil and a considerable storage capacity, this dam is essential for protecting the surrounding area from potential inundation. As water resource and climate enthusiasts, it is important to monitor the condition and maintenance of structures like SCS-Cherokee Sandy Site-08b to ensure the safety and resilience of our water infrastructure in the face of changing climate patterns.
Year Completed |
1963 |
Dam Length |
960 |
Dam Height |
34 |
River Or Stream |
TR-WILLOW SANDY CREEK |
Surface Area |
14 |
Hydraulic Height |
30 |
Nid Storage |
362 |
Structural Height |
34 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
34 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Washita River Near Pauls Valley
|
335cfs |
Rock Creek At Sulphur
|
8cfs |
Canadian River At Purcell
|
208cfs |
Walnut Creek At Purcell
|
29cfs |
Little River Near Tecumseh
|
7cfs |
Pennington Creek Near Reagan
|
7cfs |
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-08b