Tehuacana Creek Ws Scs Site 15 Dam Reservoir Report

Last Updated: December 5, 2025

Located in McLennan County, Texas, the Tehuacana Creek WS SCS Site 15 Dam is a vital structure designed by the USDA NRCS and completed in 1969 for flood risk reduction along the Post Oak Creek.


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Summary

With a height of 38 feet and a length of 7890 feet, this earth dam serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction, providing a normal storage capacity of 200 acre-feet and a maximum discharge of 6226 cubic feet per second.

Managed by the local government and regulated by the Texas Commission on Environmental Quality (TCEQ), this dam has a fair condition assessment as of October 2017. The dam features an uncontrolled spillway type with a width of 271 feet, and outlet gates including a slide gate and two uncontrolled gates. Despite moderate risk assessment, with a hazard potential not available, the dam has not undergone recent modifications and is inspected every five years to ensure continued safety and functionality.

Enthusiasts of water resources and climate will find the Tehuacana Creek WS SCS Site 15 Dam to be a fascinating structure that plays a crucial role in the protection of the surrounding area from flooding. With its strategic location, design, and storage capacity, this dam serves as a testament to the importance of sustainable water management practices in mitigating natural disasters and ensuring the safety of communities in the region.

Year Completed

1969

Dam Length

7890

Dam Height

38

River Or Stream

POST OAK CREEK

Primary Dam Type

Earth

Surface Area

47

Hydraulic Height

38

Drainage Area

5.75

Nid Storage

4356

Structural Height

38

Outlet Gates

Slide (sluice gate) - 1, Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

38
       
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.