Dillard Lake Dam Reservoir Report

Last Updated: December 5, 2025

Dillard Lake Dam, located in Henderson, Texas, was completed in 1965 for the primary purpose of recreation.


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Summary

This private-owned earth dam, with a structural height of 14 feet, impounds water from the TR-Flat Creek for a maximum storage capacity of 118 acre-feet. The dam has a normal storage capacity of 84 acre-feet and covers a surface area of 15 acres.

Despite its recreational focus, Dillard Lake Dam presents a high-risk potential due to its unspecified hazard and lack of condition assessment. The dam does not have a spillway and is not regulated by the state, which raises concerns about its safety and maintenance. With a risk assessment rating of "High (2)", there is a need for thorough inspection and potential risk management measures to ensure the safety of the surrounding community and the integrity of the structure.

Given the lack of available data on the dam's condition and emergency preparedness, stakeholders and water resource enthusiasts should advocate for regular inspections and the development of an Emergency Action Plan (EAP) to mitigate potential risks. Additionally, collaboration with state regulatory agencies may be necessary to ensure proper oversight and enforcement of safety measures. As climate change continues to impact water resources, proactive measures must be taken to safeguard Dillard Lake Dam and the surrounding area from potential hazards.

Year Completed

1965

Dam Height

14

River Or Stream

TR-FLAT CREEK

Primary Dam Type

Earth

Surface Area

15

Hydraulic Height

14

Nid Storage

118

Structural Height

14

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

14
       
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.