Lower Serenity Dam Reservoir Report

Last Updated: December 5, 2025

Lower Serenity Dam, located in Montgomery, Texas, is a privately owned earth dam with a primary purpose of recreation.


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Summary

Completed in 1998, this dam stands at a height of 9 feet and has a length of 500 feet, providing a storage capacity of 118 acre-feet. The dam regulates the flow of TR-DRY CREEK and has a spillway width of 21 feet for uncontrolled water release.

With a fair condition assessment as of April 2021, Lower Serenity Dam is inspected every 5 years to ensure its safety and functionality. The dam has a moderate risk assessment rating of 3, indicating potential hazards that require management measures. Despite its relatively small surface area of 12 acres, the dam plays a crucial role in providing recreational opportunities and regulating water flow in the area.

Owned by a private entity, Lower Serenity Dam is regulated by the Texas Commission on Environmental Quality (TCEQ) and is subject to state permitting, inspection, and enforcement. Its location within the Fort Worth District adds to the significance of this structure in managing water resources in the region. Water resource and climate enthusiasts can appreciate the engineering and environmental aspects of Lower Serenity Dam, which contribute to the overall water management efforts in Texas.

Year Completed

1998

Dam Length

500

Dam Height

9

River Or Stream

TR-DRY CREEK

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

9

Drainage Area

0.81

Nid Storage

118

Structural Height

9

Outlet Gates

Uncontrolled - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

9
       
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.