Lake Mb3 Dam Reservoir Report

Last Updated: December 5, 2025

Lake Mb3 Dam, located in Tarrant, Texas, is a privately owned earth dam primarily used for recreation purposes.


°F

°F

mph

Wind

%

Humidity

Summary

The dam, designed by Carter and Burgess Inc, stands at a height of 10 feet with a structural length of 230 feet, providing a storage capacity of 15 acre-feet. The dam overlooks the TR-MARSHALL BRANCH river or stream and has a spillway width of 190 feet, with a maximum discharge of 2 cubic feet per second.

Despite its recreational appeal, Lake Mb3 Dam has faced challenges in terms of its condition assessment, which has been rated as poor. The last inspection in 2013 highlighted the need for improvement, with a moderate risk assessment rating of 3. The dam has yet to undergo any modifications since its completion, and its hazard potential is currently classified as not available. The Texas Commission on Environmental Quality (TCEQ) oversees the state regulation, permitting, inspection, and enforcement of the dam to ensure compliance with safety standards.

For water resource and climate enthusiasts, Lake Mb3 Dam presents an intriguing case study in the management and maintenance of privately owned dams for recreational purposes. With a focus on improving its condition assessment and risk management measures, there is an opportunity to enhance the safety and sustainability of this vital water resource. As climate change continues to impact water availability and quality, it is essential for stakeholders to collaborate and prioritize the resilience of dams like Lake Mb3 in the face of evolving environmental challenges.

Dam Length

230

Dam Height

10

River Or Stream

TR-MARSHALL BRANCH

Primary Dam Type

Earth

Surface Area

0.61

Hydraulic Height

10

Drainage Area

0.61

Nid Storage

15

Structural Height

10

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

10
       
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.