Scs-Cottonwood Creek Site-04 Reservoir Report
Last Updated: December 17, 2025
SCS-Cottonwood Creek Site-04, located in Logan County, Oklahoma, is a state-owned earth dam constructed in 1966 by the USDA NRCS with the primary purpose of flood risk reduction along the TR-Cottonwood Creek.
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Summary
Standing at a height of 37 feet, the dam has a hydraulic height of 34 feet and a structural height of 37 feet, with a length of 925 feet and a storage capacity of 627 acre-feet. Despite its fair condition assessment and high hazard potential, the dam is regulated, permitted, inspected, and enforced by the Oklahoma Water Resources Board, ensuring its safety and functionality for the surrounding area.
The dam features a controlled spillway and a slide gate outlet, with a maximum discharge capacity of 8570 cubic feet per second. The surrounding drainage area is 1.52 square miles, with a surface area of 10 acres and a normal storage capacity of 57 acre-feet. While the risk assessment for the dam is very high, with a risk level of 1, there is no current Emergency Action Plan (EAP) in place, raising concerns about emergency preparedness in case of a potential breach. Overall, SCS-Cottonwood Creek Site-04 serves as a crucial infrastructure for flood control in the region, but ongoing monitoring and maintenance efforts are essential to ensure its continued safety and effectiveness in mitigating flood risks.
Year Completed |
1966 |
Dam Length |
925 |
Dam Height |
37 |
River Or Stream |
TR-COTTONWOOD CREEK |
Primary Dam Type |
Earth |
Surface Area |
10 |
Hydraulic Height |
34 |
Drainage Area |
1.52 |
Nid Storage |
627 |
Structural Height |
37 |
Outlet Gates |
Slide (sluice gate) - 1 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
37 |
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-04