Post Oak Dam Reservoir Report
Nearby: Caddo Dam French Lake Dam
Last Updated: December 6, 2025
Post Oak Dam, located in Comanche County, Oklahoma, is a concrete structure built in 1936 by the Fish and Wildlife Service for the primary purpose of creating a Fish and Wildlife Pond along Post Oak Creek.
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Summary
With a height of 41 feet and a hydraulic height of 42 feet, the dam has a storage capacity of 84 acre-feet and a surface area of 3.5 acres. Despite its low hazard potential, the dam is currently assessed as being in poor condition, with a moderate risk level.
The dam features an uncontrolled spillway with a width of 65 feet and a maximum discharge of 1084 cubic feet per second. While it has not been modified over the years, the dam is inspected every five years to ensure its structural integrity. The area surrounding the dam is not state-regulated, and there are no state permits, inspections, or enforcement measures in place. Overall, Post Oak Dam serves as an important resource for maintaining fish and wildlife habitats in the region, despite its current condition assessment.
Year Completed |
1936 |
Dam Length |
106 |
Dam Height |
41 |
River Or Stream |
Post Oak Creek |
Primary Dam Type |
Concrete |
Surface Area |
3.5 |
Hydraulic Height |
42 |
Drainage Area |
0.7 |
Nid Storage |
84 |
Structural Height |
41 |
Hazard Potential |
Low |
Foundations |
Rock |
Nid Height |
42 |
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.
Post Oak Dam