John May Dam No 2 Reservoir Report

Last Updated: December 5, 2025

John May Dam No 2, located in Titus, Texas, is a privately owned structure that was completed in 1945 on TR-Tankersley Creek.


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Summary

This earth dam stands at a height of 15 feet and has a length of 625 feet, providing a storage capacity of 64 acre-feet. The dam serves multiple purposes, including flood control and irrigation, with a normal storage volume of 58 acre-feet and a surface area of 10.7 acres.

Despite its age, John May Dam No 2 has been subject to modifications in 2005 to enhance its structural integrity. However, recent assessments have classified its condition as poor, raising concerns about its long-term safety and functionality. The dam is regulated by the Texas Commission on Environmental Quality (TCEQ) and undergoes regular inspections, but its hazard potential and risk assessment are currently labeled as moderate.

For water resource and climate enthusiasts, the data on John May Dam No 2 offers insight into the infrastructure that helps manage water resources in Texas. Understanding the history and current state of this dam can inform discussions on the importance of maintaining and upgrading aging water infrastructure to ensure continued safety and efficiency in the face of changing climate conditions.

Years Modified

2005 - Structural

Year Completed

1945

Dam Length

625

Dam Height

15

River Or Stream

TR-TANKERSLEY CREEK

Primary Dam Type

Earth

Surface Area

10.7

Hydraulic Height

15

Drainage Area

0.23

Nid Storage

64

Structural Height

15

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

15
       
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.