Holmes Dam Reservoir Report

Last Updated: December 5, 2025

Holmes Dam, located in Harrison County, Texas, was completed in 1945 by the Texas & Pacific Railway and East TX Engineers.


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Summary

This earth dam, with a height of 31 feet and a length of 1105 feet, was primarily designed for recreational purposes along Grays Creek. The dam has a storage capacity of 2716 acre-feet and a surface area of 119 acres, making it a popular spot for outdoor activities.

Managed by the Texas Commission on Environmental Quality (TCEQ), Holmes Dam is regulated, permitted, inspected, and enforced by the state government to ensure its safety and compliance with regulations. The dam features an uncontrolled spillway with a width of 200 feet, and three uncontrolled outlet gates. In 1991, the dam underwent structural modifications to enhance its safety and functionality, further solidifying its role as a reliable water resource for the surrounding area.

Despite its moderate risk assessment, Holmes Dam remains a well-maintained and essential infrastructure for water management in the region. With its scenic location and recreational amenities, the dam continues to attract water resource and climate enthusiasts seeking outdoor adventures and relaxation along Grays Creek in Texas.

Years Modified

1991 - Structural

Year Completed

1945

Dam Length

1105

Dam Height

31

River Or Stream

GRAYS CREEK

Primary Dam Type

Earth

Surface Area

119

Hydraulic Height

31

Drainage Area

9.92

Nid Storage

2716

Structural Height

31

Outlet Gates

Uncontrolled - 3

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

31
       
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.