Glynn Wilson Dam Reservoir Report

Last Updated: December 5, 2025

Glynn Wilson Dam, located in Stephens County, Texas, was completed in 1976 for the primary purpose of irrigation.


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Summary

This earth dam stands at a height of 20 feet and has a length of 786 feet, providing a storage capacity of 248 acre-feet. While the dam does not have a spillway, it does have one outlet gate for water release.

Despite being privately owned, Glynn Wilson Dam is subject to state inspections and permitting requirements. The dam, which impounds the TR-North Colony Creek, is not regulated by the state and has not been rated for its condition. With a high risk assessment of 2, there is a need for implementing proper risk management measures to ensure the safety and stability of the dam.

As an important component for irrigation and other purposes such as fire protection and small fish ponds in the region, Glynn Wilson Dam serves as a critical water resource infrastructure. Its location within the Fort Worth District and the lack of federal funding or oversight make it a unique structure in the area. Water resource and climate enthusiasts may find interest in the history, design, and management of Glynn Wilson Dam as it continues to play a vital role in water supply and agricultural activities in the region.

Year Completed

1976

Dam Length

786

Dam Height

20

River Or Stream

TR-NORTH COLONY CREEK

Primary Dam Type

Earth

Hydraulic Height

20

Nid Storage

248

Structural Height

20

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

20
       
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.