Martin Dam Reservoir Report

Last Updated: December 5, 2025

Martin Dam, located in Joshua, Texas, is a privately owned structure regulated by the Texas Commission on Environmental Quality.


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Summary

This earth dam, standing at a height of 8 feet, serves as a crucial water resource along the TR-Willow Creek. With a storage capacity of 10 acre-feet and a spillway width of 630 feet, Martin Dam plays a fundamental role in managing water levels and ensuring flood control in the area.

Despite its fair condition assessment as of April 2018, Martin Dam poses a moderate risk, as indicated by a hazard potential that is not available. The dam's inspection frequency is set at every 5 years, with the last inspection conducted in January 2018. While the dam is considered to meet regulatory guidelines, emergency preparedness measures such as an Emergency Action Plan and inundation maps are not currently in place, raising concerns about potential risks and the need for enhanced risk management strategies.

Overall, Martin Dam stands as a vital infrastructure for water management and flood control in Johnson County, Texas. With its strategic location and regulatory oversight, the dam plays a crucial role in safeguarding the surrounding communities from potential water-related hazards. As water resource and climate enthusiasts, it is essential to monitor and support the maintenance and enhancement of structures like Martin Dam to ensure the sustainable management of water resources and the protection of communities in the face of changing climate conditions.

Dam Height

8

River Or Stream

TR-WILLOW CREEK

Primary Dam Type

Earth

Surface Area

0.01

Hydraulic Height

8

Nid Storage

10

Structural Height

8

Outlet Gates

Uncontrolled - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

8
       
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.