Scs-Tri-County Turkey Creek Site-21 Reservoir Report
Last Updated: December 21, 2025
SCS-Tri-County Turkey Creek Site-21, located in Duke, Oklahoma, is a state-regulated earth dam designed by USDA NRCS in 1967 for the primary purpose of flood risk reduction along TR-Cottonwood Creek.
°F
°F
mph
Wind
%
Humidity
Summary
With a height of 25 feet and a hydraulic height of 21 feet, this dam has a storage capacity of 384 acre-feet and a normal storage of 110 acre-feet. The dam stretches 1930 feet in length and features a controlled spillway with a width of 1 foot.
Despite being classified as having a low hazard potential, the risk assessment for SCS-Tri-County Turkey Creek Site-21 indicates a very high risk level of 1. The condition assessment is currently marked as "Not Rated," with the last inspection conducted in 1988. The emergency action plan status and risk management measures for this dam are not specified in the data. Overall, this site presents an intriguing case study for water resource and climate enthusiasts, showcasing the complex interplay between infrastructure, regulation, and risk in managing water resources for flood control in Oklahoma.
Year Completed |
1967 |
Dam Length |
1930 |
Dam Height |
25 |
River Or Stream |
TR-COTTONWOOD CREEK |
Primary Dam Type |
Earth |
Surface Area |
30 |
Hydraulic Height |
21 |
Nid Storage |
384 |
Structural Height |
25 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
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-21