Scs-Cottonwood Creek Site-15 Reservoir Report
Last Updated: December 6, 2025
SCS-Cottonwood Creek Site-15, located in Cashion, Oklahoma, is a state-regulated earth dam constructed in 1967 by the NRCS.
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Summary
The dam, standing at a height of 55 feet, serves primarily for flood risk reduction along Cottonwood Creek, with a capacity of 4253 acre-feet of storage and a normal storage level of 625 acre-feet. The dam's spillway, which is controlled and 2 feet wide, can handle a maximum discharge of 6640 cubic feet per second.
Despite being rated as having a high hazard potential, the dam's condition was assessed as fair as of August 2011. Its inspection frequency is once every year, with the last inspection conducted in September 2010. The risk assessment for SCS-Cottonwood Creek Site-15 indicates a very high risk level, with a DSAC assigned date and a risk management measures status not specified. The dam's emergency action plan (EAP) status and its adherence to guidelines, as well as the preparation of inundation maps and update of emergency contacts, are also not provided in the available data. For water resource and climate enthusiasts, this dam presents an opportunity to explore the intersection of infrastructure management, risk assessment, and emergency preparedness in the context of water resource management.
Year Completed |
1967 |
Dam Length |
2450 |
Dam Height |
55 |
River Or Stream |
COTTONWOOD CREEK |
Primary Dam Type |
Earth |
Surface Area |
76 |
Hydraulic Height |
55 |
Nid Storage |
4253 |
Structural Height |
55 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
55 |
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-15