Scs-Tri-County Turkey Creek Site-10 Reservoir Report
Last Updated: December 21, 2025
SCS-Tri-County Turkey Creek Site-10, located in Harmon, Oklahoma, is a state-regulated earth dam completed in 1966 by the USDA NRCS.
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Summary
The primary purpose of this structure is flood risk reduction along TR-Turkey Creek. Standing at a height of 31 feet with a hydraulic height of 26 feet, this dam has a storage capacity of 1378 acre-feet and a normal storage of 640 acre-feet, covering a surface area of 113 acres.
With a controlled spillway and one valve outlet gate, SCS-Tri-County Turkey Creek Site-10 has a low hazard potential and has not been rated for condition assessment. The dam is inspected every 5 years, with the last inspection conducted in June 1988. Despite its age, this dam still serves its purpose effectively, showcasing the importance of proper maintenance and oversight in ensuring the safety and functionality of water resource infrastructure in the face of climate challenges.
Year Completed |
1966 |
Dam Length |
2740 |
Dam Height |
31 |
River Or Stream |
TR-TURKEY CREEK |
Primary Dam Type |
Earth |
Surface Area |
113 |
Hydraulic Height |
26 |
Nid Storage |
1378 |
Structural Height |
31 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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-Tri-County Turkey Creek Site-10