Tri-Lakes Estates Dam 1 Reservoir Report

Last Updated: December 5, 2025

Tri-Lakes Estates Dam 1 is a privately owned earth dam located in Montgomery, Texas, with a primary purpose of recreation.


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Summary

Completed in 1969, this dam stands at 21 feet high and spans 550 feet in length, creating a surface area of 6.3 acres. It holds a storage capacity of 55 acre-feet, with a normal storage level of 42 acre-feet, and is situated on Tr-Lake Creek.

Managed by the Texas Commission on Environmental Quality (TCEQ), Tri-Lakes Estates Dam 1 has a fair condition assessment as of June 2018, with regular inspections every 5 years. The dam features an uncontrolled spillway with a width of 65 feet and two uncontrolled outlet gates. While the hazard potential is not available, the risk assessment for this dam is moderate (3), indicating a need for ongoing risk management measures to ensure the safety of the surrounding area in case of emergencies.

This recreational dam, nestled in the natural beauty of Texas, provides both a scenic escape and a potential source of concern for water resource and climate enthusiasts. With its unique design and history, Tri-Lakes Estates Dam 1 serves as a reminder of the delicate balance between human enjoyment of water resources and the need for responsible management to mitigate potential risks.

Year Completed

1969

Dam Length

550

Dam Height

21

River Or Stream

TR-LAKE CREEK

Primary Dam Type

Earth

Surface Area

6.3

Hydraulic Height

21

Drainage Area

0.15

Nid Storage

55

Structural Height

21

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

21
       
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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.