Scs-Cow Creek Site-16a Reservoir Report
Nearby: Scs-Cow Creek Site-15 Beavers T.D.
Last Updated: December 8, 2025
SCS-Cow Creek Site-16a, located in Duncan, Oklahoma, is a state-regulated dam designed by the USDA NRCS with a primary purpose of flood risk reduction.
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Summary
Completed in 1993, this Earth-type dam stands at a height of 40 feet and spans 840 feet in length. With a NID storage capacity of 405 acre-feet and a maximum discharge of 405 cubic feet per second, this dam plays a crucial role in managing water flow in the East Creek watershed.
The dam boasts a controlled spillway type and a low hazard potential, making it a relatively low-risk structure. Despite being last inspected in 1980, the dam is not rated for its current condition assessment. With a risk assessment indicating a very high risk level, there is a need for updated inspections and risk management measures to ensure the safety and efficiency of this important flood control infrastructure. Overall, SCS-Cow Creek Site-16a serves as a vital component in the water resource management system of Stephens County, Oklahoma.
As a part of the state's flood risk reduction efforts, SCS-Cow Creek Site-16a represents a critical piece of infrastructure designed to protect communities and natural resources from the impacts of flooding. With its strategic location and features such as a valve outlet gate and stone core, this dam is equipped to handle the challenges posed by its 1.01 square mile drainage area. Moving forward, continued monitoring and maintenance will be essential to uphold the integrity and functionality of this key water resource management asset in Oklahoma's Fort Worth District.
Year Completed |
1993 |
Dam Length |
840 |
Dam Height |
40 |
River Or Stream |
EAST CREEK |
Primary Dam Type |
Earth |
Surface Area |
11 |
Hydraulic Height |
40 |
Drainage Area |
1.01 |
Nid Storage |
405 |
Structural Height |
40 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
40 |
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.
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