Lake Greenbriar Dam Reservoir Report

Last Updated: December 5, 2025

Lake Greenbriar Dam, located in Hawkins, Texas, is a privately owned structure on Greenbriar Creek primarily used for irrigation purposes.


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1975, this earth dam stands at a height of 40 feet and has a length of 1300 feet. With a storage capacity of 4074 acre-feet, it serves as a crucial water resource for the surrounding area.

Despite being privately owned, the dam is regulated, inspected, and enforced by the Texas Commission on Environmental Quality (TCEQ). The dam's condition was last assessed as fair in 2016, with a moderate risk rating. The spillway, with a width of 205 feet, is uncontrolled and can discharge up to 8139 cubic feet per second in times of high water levels.

The Lake Greenbriar Dam is not only essential for irrigation but also provides recreational opportunities in the area. With its strategic location and significant storage capacity, this dam plays a vital role in water resource management and climate resilience efforts in Wood County, Texas.

Years Modified

1990 - Other

Year Completed

1975

Dam Length

1300

Dam Height

40

River Or Stream

GREENBRIAR CREEK

Primary Dam Type

Earth

Surface Area

197

Hydraulic Height

40

Drainage Area

9.2

Nid Storage

4074

Structural Height

42

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Soil

Nid Height

42
       
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.