Scs-Sandy Creek Site-20 Reservoir Report
Last Updated: December 8, 2025
SCS-Sandy Creek Site-20 in Pontotoc County, Oklahoma, is a state-owned earth dam built in 1965 by the USDA NRCS for flood risk reduction along Coon Creek.
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Summary
The dam stands at a height of 31 feet with a length of 1550 feet, providing a storage capacity of 825 acre-feet and a maximum discharge of 6380 cubic feet per second. The dam is regulated by the Oklahoma Water Resources Board and undergoes regular inspections to ensure its structural integrity.
Despite being rated as having a low hazard potential, the site has a very high risk assessment due to its critical role in flood risk reduction for the surrounding area. The dam has a controlled spillway and is equipped with a single valve outlet gate for water release. While the condition assessment is currently not rated, the dam is regularly inspected every five years to maintain its functionality and safety measures. The location in Ada, Oklahoma, under the jurisdiction of the OWRB, highlights the importance of this structure in managing water resources and climate-related risks in the region.
Overall, SCS-Sandy Creek Site-20 serves as a vital infrastructure for water resource management and flood control in Pontotoc County. With its strategic design and state oversight, the dam plays a crucial role in mitigating potential flood risks along Coon Creek, safeguarding the surrounding communities from water-related disasters. As a key component of the local water management system, the site underscores the importance of proactive measures in addressing climate challenges and ensuring the resilience of water resources for the future.
Year Completed |
1965 |
Dam Length |
1550 |
Dam Height |
31 |
River Or Stream |
COON CREEK |
Primary Dam Type |
Earth |
Surface Area |
20 |
Hydraulic Height |
31 |
Nid Storage |
825 |
Structural Height |
31 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Washita River Near Pauls Valley
|
335cfs |
Rock Creek At Sulphur
|
8cfs |
Little River Near Sasakwa
|
15cfs |
Little River Near Tecumseh
|
7cfs |
Canadian River At Purcell
|
208cfs |
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-Sandy Creek Site-20