Lower Brushy Creek Ws Scs Site 18 Dam Reservoir Report

Last Updated: December 5, 2025

The Lower Brushy Creek WS SCS Site 18 Dam, located in Williamson County, Texas, was completed in 1963 by the USDA NRCS and serves as a vital structure for flood risk reduction along the Long Branch river stream.


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Summary

The dam, primarily constructed of earth with a buttress core type, stands at a height of 34 feet and spans a length of 3240 feet. With a storage capacity of 2790 acre-feet, the dam plays a crucial role in managing water flow and maintaining normal storage levels to mitigate flood risks in the area.

This dam also serves multiple purposes including fire protection, stock or small fish pond maintenance, and flood risk reduction activities. It is regulated by the Texas Commission on Environmental Quality (TCEQ) and undergoes regular inspections to ensure its structural integrity. The dam features an uncontrolled spillway with a width of 302 feet and outlet gates for water release. Despite being assessed as in fair condition, the dam poses a moderate risk level (3) according to the risk assessment, highlighting the importance of ongoing maintenance and monitoring efforts to ensure its continued effectiveness in flood mitigation and water resource management.

With its critical role in flood risk reduction and water management, the Lower Brushy Creek WS SCS Site 18 Dam stands as a testament to the importance of infrastructure in ensuring the safety and well-being of communities in the face of climate challenges. As climate change continues to impact water resources, the proper maintenance and operation of dams like this one are essential in safeguarding against potential flooding and ensuring sustainable water management practices for future generations.

Year Completed

1963

Dam Length

3240

Dam Height

34

River Or Stream

LONG BRANCH

Primary Dam Type

Earth

Surface Area

38

Hydraulic Height

34

Drainage Area

4.8

Nid Storage

2790

Structural Height

34

Outlet Gates

Slide (sluice gate) - 1, Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

34
       
Seasonal Comparison

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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.