Scs-Cottonwood Creek Site-11 Reservoir Report
Last Updated: December 10, 2025
SCS-Cottonwood Creek Site-11, located in Logan, Oklahoma, is a state-regulated dam designed by USDA NRCS with a primary purpose of flood risk reduction.
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Summary
Completed in 1973, this earth dam stands at a height of 25 feet and spans a length of 1470 feet, with a storage capacity of 326 acre-feet. The dam is situated on TR-Cottonwood Creek and falls under the jurisdiction of the Oklahoma Water Resources Board (OWRB).
This low hazard potential dam has a controlled spillway and one outlet valve for water release. Despite being last inspected in 1996, with an inspection frequency of 5 years, the condition assessment is currently labeled as "Not Rated." The risk assessment for SCS-Cottonwood Creek Site-11 stands at a very high level (1), emphasizing the importance of regular monitoring and maintenance to ensure the safety and integrity of the structure in the face of potential climate-related challenges.
For water resource and climate enthusiasts, SCS-Cottonwood Creek Site-11 serves as an intriguing case study in dam infrastructure management and risk mitigation. As part of ongoing efforts to address flood risks and ensure public safety, continued monitoring and evaluation of this dam will be crucial in adapting to changing environmental conditions and preserving the resilience of water resources in the region.
Year Completed |
1973 |
Dam Length |
1470 |
Dam Height |
25 |
River Or Stream |
TR-COTTONWOOD CREEK |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
22 |
Drainage Area |
1.03 |
Nid Storage |
326 |
Structural Height |
25 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
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-Cottonwood Creek Site-11