Tdcj Eastham Unit Reservoir Dam Reservoir Report

Last Updated: December 5, 2025

The Tdcj Eastham Unit Reservoir Dam, located in Houston, Texas, was completed in 1957 and stands at a height of 11 feet with a length of 6535 feet.


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Summary

This earth dam, primarily owned by the state of Texas, serves as a critical structure for water resource management, with a storage capacity of 540 acre-feet. While the dam does not have a spillway or locks, it is regulated, inspected, and enforced by the Texas Commission on Environmental Quality (TCEQ) to ensure its safety and functionality.

The dam's primary purpose is listed as "Other," indicating its importance beyond just flood control or irrigation. Despite being classified as having a high risk potential, its condition assessment has not been rated. The surrounding area, including the Trinity River, benefits from the dam's presence in managing water flow and storage. With a focus on climate resilience and water resource sustainability, enthusiasts can appreciate the engineering and regulatory efforts that go into maintaining structures like the Tdcj Eastham Unit Reservoir Dam for the benefit of the local community and ecosystem.

Year Completed

1957

Dam Length

6535

Dam Height

11

River Or Stream

OFF CH-TRINITY RIVER

Primary Dam Type

Earth

Hydraulic Height

11

Nid Storage

540

Structural Height

11

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

11
       
Seasonal Comparison

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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.