Pearson Lake Dam Reservoir Report

Last Updated: December 5, 2025

Pearson Lake Dam, located in Williamson, Texas, is a privately owned structure designed by the USDA NRCS and regulated by the TCEQ.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1980, this earth dam stands at a height of 23 feet and spans 566 feet in length, with a storage capacity of 101 acre-feet. Serving multiple purposes such as recreation and other uses, the dam controls the flow of TR-Battleground Creek and has an uncontrolled spillway with a width of 72 feet.

Despite being rated as "Not Available" in terms of hazard potential and "Not Rated" in condition assessment, Pearson Lake Dam has undergone inspections, with the last one conducted in April 2013. The risk assessment for this dam is moderate, signaling a need for ongoing monitoring and management measures. In the event of an emergency, the dam has two uncontrolled outlet gates, but details on emergency action plans and inundation maps are not available at this time. Overall, Pearson Lake Dam is a vital structure in the region, providing water storage and recreational opportunities while requiring continued attention to ensure its safety and functionality in the face of changing climate conditions.

Year Completed

1980

Dam Length

566

Dam Height

23

River Or Stream

TR-BATTLEGROUND CREEK

Primary Dam Type

Earth

Surface Area

5.7

Hydraulic Height

23

Drainage Area

1.1

Nid Storage

101

Structural Height

23

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Soil

Nid Height

23
       
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.