Wilson Lake Dam Reservoir Report

Last Updated: December 5, 2025

Wilson Lake Dam, located in Frio, Texas, is a private-owned structure that serves multiple purposes including fire protection, stock, and small fish pond.


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Summary

Built in 1964, this earth dam stands at a height of 15 feet and stretches for 1600 feet across Squirrel Creek. With a storage capacity of 1500 acre-feet, the dam plays a crucial role in water resource management in the area.

Despite its relatively small size, Wilson Lake Dam has a high hazard potential and is classified as a risk level 2 structure. While the dam is not equipped with a spillway, it does have a single outlet gate for water control. Although not currently rated for its condition, the dam is subject to state regulation, inspection, and enforcement by the Texas Commission on Environmental Quality (TCEQ), ensuring its continued safe operation.

For water resource and climate enthusiasts, Wilson Lake Dam represents a vital piece of infrastructure in the region, providing essential services for fire protection and water storage. As a privately owned facility, the dam is subject to state oversight and regulation, ensuring compliance with safety standards. With its strategic location on Squirrel Creek, Wilson Lake Dam plays a key role in managing water resources and supporting the local ecosystem.

Year Completed

1964

Dam Length

1600

Dam Height

15

River Or Stream

SQUIRREL CREEK

Primary Dam Type

Earth

Surface Area

100

Hydraulic Height

15

Nid Storage

1500

Structural Height

15

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

15
       
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.