Cox Richard Reservoir Report
Nearby: White Cletus Oknoname 051047
Last Updated: December 6, 2025
Located in Comanche, Oklahoma, Cox Richard is a privately owned earth dam designed by USDA NRCS with a primary purpose of irrigation.
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Summary
Completed in 1970, this structure stands at a height of 29 feet and spans 362 feet in length, with a storage capacity of 140 acre-feet. Situated on TR-Cottonwood Creek, Cox Richard is regulated by the Oklahoma Water Resources Board and undergoes regular inspections, with the last one conducted in September 2010.
Despite its low hazard potential, Cox Richard is classified as having a very high risk due to its condition assessment being marked as "Not Rated." The dam features a controlled spillway and a single valve outlet gate. With a drainage area of 3 acres and a maximum discharge of 1,120 cubic feet per second, Cox Richard plays a crucial role in the local irrigation system. As a key water resource in the region, water and climate enthusiasts are encouraged to monitor its condition and management closely.
Year Completed |
1970 |
Dam Length |
362 |
Dam Height |
29 |
River Or Stream |
TR-COTTONWOOD CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
29 |
Nid Storage |
140 |
Structural Height |
29 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
Seasonal Comparison
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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.
Cox Richard