Upper Brushy Creek Ws Scs Site 3 Dam Reservoir Report

Last Updated: December 5, 2025

The Upper Brushy Creek WS SCS Site 3 Dam, located in Williamson County, Texas, was completed in 1962 by the USDA NRCS to primarily serve as a flood risk reduction measure along Block House Creek.


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Summary

This earth dam stands at a height of 55 feet and spans 4400 feet in length, with a storage capacity of 4954 acre-feet. The dam's spillway, with a width of 253 feet, is uncontrolled, allowing for a maximum discharge of 26566 cubic feet per second.

Managed by the local government and regulated by the Texas Commission on Environmental Quality (TCEQ), the dam has been assessed to be in satisfactory condition as of June 2017. Despite its moderate hazard potential, the dam has not had any reported incidents, with inspections conducted every five years to ensure its structural integrity. With its strategic location and design, the Upper Brushy Creek WS SCS Site 3 Dam continues to play a crucial role in protecting the surrounding area from potential flooding events along Block House Creek.

Year Completed

1962

Dam Length

4400

Dam Height

55

River Or Stream

BLOCK HOUSE CREEK

Primary Dam Type

Earth

Surface Area

36

Hydraulic Height

55

Drainage Area

8.5

Nid Storage

4954

Structural Height

55

Outlet Gates

Uncontrolled - 3, Valve - 1

Hazard Potential

Not Available

Foundations

Rock, Soil

Nid Height

55
       
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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.