Lake Hardin Dam Reservoir Report

Last Updated: December 5, 2025

Lake Hardin Dam, located in Montgomery, Texas, is a vital earth dam constructed in 1962 for recreational purposes on the TR-Sulphur Branch.


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Summary

With a maximum storage capacity of 60 acre-feet and a normal storage of 14 acre-feet, the dam stands at a height of 19 feet and has a spillway width of 25 feet. Despite being uncontrolled, the dam's hazard potential is not available, and its condition assessment remains unrated.

Managed by the Texas Commission on Environmental Quality (TCEQ), Lake Hardin Dam has undergone modifications in 1998 and is subject to regular state inspections, permitting, and enforcement. The dam's emergency action plan was last revised in 2015, ensuring it meets safety guidelines in case of a natural disaster. With a moderate risk assessment rating, the dam poses a manageable level of risk to the surrounding area and has not experienced any major incidents to date.

Lake Hardin Dam serves as a recreational hub in the area, offering opportunities for boating, fishing, and other water activities. Its strategic location and sturdy construction make it a valuable asset for water resource and climate enthusiasts interested in understanding the role of earth dams in water management and conservation efforts.

Years Modified

1998 - Other

Year Completed

1962

Dam Length

560

Dam Height

12

River Or Stream

TR-SULPHUR BRANCH

Hydraulic Height

12

Drainage Area

0.88

Nid Storage

60

Structural Height

19

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

19
       
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.