Choctaw Creek Ws Scs Site 11 Dam Reservoir Report

Last Updated: December 5, 2025

Choctaw Creek WS SCS Site 11 Dam, located in Grayson County, Texas, is a vital structure designed by the USDA NRCS to reduce flood risks along Post Oak Creek.


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Summary

Completed in 1988, this earth dam stands at a height of 44 feet and a length of 3362 feet, with a storage capacity of 2844 acre-feet. The dam also serves recreational purposes, covering a surface area of 45 acres and offering opportunities for outdoor activities in the Sherman area.

Managed by the TCEQ and subject to state regulations and inspections, Choctaw Creek WS SCS Site 11 Dam has been assessed as structurally sound and in satisfactory condition as of April 2021. With a moderate risk assessment rating of 3, the dam's uncontrolled spillway and two outlet gates allow for a maximum discharge of 29500 cubic feet per second. While the hazard potential is not available, the dam's emergency action plan status and risk management measures are currently unknown, indicating room for improvement in emergency preparedness and response.

Overall, Choctaw Creek WS SCS Site 11 Dam plays a crucial role in managing water resources and mitigating flood risks in the region. As water resource and climate enthusiasts, it is essential to monitor and support the ongoing maintenance and safety measures for this significant infrastructure to ensure the protection of communities and the environment along Post Oak Creek.

Year Completed

1988

Dam Length

3362

Dam Height

44

River Or Stream

POST OAK CREEK

Primary Dam Type

Earth

Surface Area

45

Hydraulic Height

44

Drainage Area

3.97

Nid Storage

2844

Structural Height

47

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Soil

Nid Height

47
       
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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.