Scs-Cotton-Coon-Mission Cr Site-003 Reservoir Report

Last Updated: December 14, 2025

SCS-Cotton-Coon-Mission Cr Site-003, located in Osage, Oklahoma, is a state-regulated dam designed by USDA NRCS with a primary purpose of Flood Risk Reduction.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1986, this earth dam stands at a height of 48 feet and has a length of 2200 feet, providing storage capacity of 3950 acre-feet and serving a drainage area of 8.1 square miles. The dam's spillway type is Controlled with a width of 2 feet, and it is equipped with a single valve outlet gate.

Despite being classified as having a low hazard potential, the risk assessment for SCS-Cotton-Coon-Mission Cr Site-003 indicates a very high risk level. However, the dam's condition has not been rated, and the last inspection date recorded was in 1980. The dam's emergency action plan status, inundation maps, and risk management measures are not currently available, suggesting a need for updated assessment and preparedness measures to address the high-risk designation.

For water resource and climate enthusiasts, SCS-Cotton-Coon-Mission Cr Site-003 presents an intriguing case study of a state-regulated dam in Oklahoma with potential flood risk reduction benefits. With its location along the Cotton-Coon-Mission Creek, this dam serves an important role in managing water flow and protecting downstream areas from flooding. However, the dam's outdated inspection and emergency preparedness information highlight the importance of regular monitoring and maintenance to ensure its continued safety and effectiveness in mitigating flood risks in the region.

Year Completed

1986

Dam Length

2200

Dam Height

48

River Or Stream

COTTON-COON-MISSION CREEK

Primary Dam Type

Earth

Surface Area

35

Hydraulic Height

48

Drainage Area

8.1

Nid Storage

3950

Structural Height

48

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

48
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.