Trinidad Dam Reservoir Report

Last Updated: December 5, 2025

Trinidad Dam, located in Henderson, Texas, was completed in 1925 and serves as an essential water resource for the region.


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Summary

This earth dam, primarily designed for purposes other than flood control, stands at a height of 18 feet and spans a length of 12,000 feet. With a maximum storage capacity of 10,768 acre-feet and a normal storage capacity of 7,450 acre-feet, the dam plays a crucial role in water management and supply within the area.

Managed by a private owner and regulated by the Texas Commission on Environmental Quality (TCEQ), Trinidad Dam has been assessed to be in satisfactory condition as of April 2021. The dam features a controlled spillway and outlet gates for efficient water release, with a very high risk assessment rating. Despite its age, the dam continues to play a vital role in water resource management, demonstrating the importance of maintaining and monitoring infrastructure to meet the needs of the community and protect against potential hazards.

As a key structure in the Fort Worth District, Trinidad Dam showcases the intersection of engineering, environmental regulation, and water resource management. Its strategic location along the Trinity River, coupled with its significant storage capacity and risk management measures, highlights the critical role that dams play in ensuring water security and climate resilience in the region.

Year Completed

1925

Dam Length

12000

Dam Height

18

River Or Stream

OFF CH-TRINITY RIVER

Primary Dam Type

Earth

Surface Area

740

Hydraulic Height

18

Drainage Area

2.4

Nid Storage

10768

Structural Height

18

Outlet Gates

Other Controlled - 1, Valve - 1

Hazard Potential

Not Available

Foundations

Soil

Nid Height

18
       
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.