Scs-Cotton-Coon-Mission Cr Site-011 Reservoir Report
Last Updated: December 10, 2025
SCS-Cotton-Coon-Mission Cr Site-011, located in Nowata, 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 1980, this earth dam stands at a height of 38 feet and has a hydraulic height of 38 feet as well. With a storage capacity of 610 acre-feet, this dam on Coon Creek serves to protect the surrounding area from potential flooding events, with a low hazard potential and a very high risk assessment rating.
Managed by the Oklahoma Water Resources Board, this dam features a controlled spillway and a single valve outlet gate. While the condition assessment is currently listed as "Not Rated," the last inspection took place in 1980, with inspections scheduled every 5 years. The risk management measures for SCS-Cotton-Coon-Mission Cr Site-011 have not been specified, but the dam is categorized as having a very high risk level, highlighting the importance of ongoing monitoring and maintenance to ensure its effectiveness in flood control and risk reduction for the community in Dewey.
With its strategic location and design, SCS-Cotton-Coon-Mission Cr Site-011 plays a crucial role in protecting the residents and properties in Nowata County from potential flooding along Coon Creek. As climate change continues to impact water resources and weather patterns, the proper management and maintenance of this dam are essential to ensure its continued effectiveness in mitigating flood risks and safeguarding the surrounding area.
Year Completed |
1980 |
Dam Length |
1750 |
Dam Height |
38 |
River Or Stream |
COON CREEK |
Primary Dam Type |
Earth |
Surface Area |
13 |
Hydraulic Height |
38 |
Nid Storage |
610 |
Structural Height |
38 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
38 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Verdigris River Near Lenapah
|
796cfs |
Caney River Above Coon Creek At Bartlesville
|
60cfs |
Verdigris R At Coffeyville
|
810cfs |
Verdigris R At Independence
|
772cfs |
Caney River Near Ramona
|
59cfs |
Caney R Nr Elgin
|
39cfs |
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-Cotton-Coon-Mission Cr Site-011