Mewbourne Lake Dam Reservoir Report

Last Updated: December 5, 2025

Mewbourne Lake Dam, located in Van Zandt, Texas, is a private-owned structure that serves as a crucial water resource in the area.


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Summary

This earth dam, with a height of 20 feet and a length of 405 feet, stands as a protective barrier along the tributary Heifer Creek. The dam has a storage capacity of 64 acre-feet and covers a surface area of 6.5 acres, making it a significant contributor to the region's water supply.

Despite its importance, Mewbourne Lake Dam is not regulated by the state and has a high hazard potential. The condition of the dam is currently not rated, highlighting the need for regular inspections and maintenance to ensure its structural integrity and prevent any potential risks. With no spillway and limited emergency preparedness measures in place, there is a pressing need for increased attention and management to mitigate potential hazards and safeguard the surrounding community from any unforeseen incidents.

As water resource and climate enthusiasts, it is crucial to recognize the significance of structures like Mewbourne Lake Dam in sustaining our ecosystems and communities. By promoting responsible ownership, regular maintenance, and effective risk management practices, we can ensure the long-term safety and viability of critical water infrastructure like Mewbourne Lake Dam for future generations.

Dam Length

405

Dam Height

20

River Or Stream

TRIBUTARY HEIFER CREEK

Primary Dam Type

Earth

Surface Area

6.5

Hydraulic Height

20

Nid Storage

64

Structural Height

20

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

20
       
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.