Mccallum Lake Dam Reservoir Report

Last Updated: December 5, 2025

McCallum Lake Dam, located in Denton, Texas, was completed in 1973 and serves multiple purposes including fire protection, stock, small fish pond, recreation, and water supply.


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Summary

This private dam stands at a height of 18 feet with a length of 630 feet, holding a maximum storage of 101 acre-feet and a normal storage capacity of 45 acre-feet. The dam is primarily an earth structure with buttress core types and is regulated by the Texas Commission on Environmental Quality (TCEQ).

Despite its relatively small size, McCallum Lake Dam poses a high risk (2) according to risk assessment data. It lacks a spillway and has no drainage area, presenting challenges in managing potential overflow situations. The dam does not have an emergency action plan in place and is currently not rated for its condition assessment, raising concerns about its structural integrity and overall safety. With the absence of inundation maps and updated emergency contacts, there are key areas for improvement in the risk management measures for this dam.

For water resource and climate enthusiasts, McCallum Lake Dam offers a unique case study in the management and regulation of private dams in Texas. By examining its design, purpose, and risk profile, researchers and policymakers can gain valuable insights into the challenges and opportunities associated with small-scale water infrastructure projects. The dam's high risk designation underscores the importance of implementing comprehensive safety measures and emergency preparedness protocols to mitigate potential hazards and protect surrounding communities and ecosystems.

Year Completed

1973

Dam Length

630

Dam Height

18

River Or Stream

TR-BRAY BRANCH

Primary Dam Type

Earth

Surface Area

7.7

Hydraulic Height

18

Nid Storage

101

Structural Height

18

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

18
       
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.