Cox Lake Dam Reservoir Report

Last Updated: December 5, 2025

Cox Lake Dam, located in Anderson, Texas, along Mitchell Branch, is a privately owned structure designed by C L MOON INC and completed in 1974.


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Summary

The primary purpose of this Earth-type dam is water supply, with a storage capacity of 131 acre-feet and a maximum height of 16 feet. Despite being unlisted for hazard potential and not rated for condition assessment, it is subject to state permitting and inspection requirements.

With a risk assessment rating of "High (2)", Cox Lake Dam presents a potential concern for water resource and climate enthusiasts. This Earth-type dam with a buttress core stands at 16 feet tall and spans 635 feet in length. Although it lacks a spillway, it does feature one outlet gate. The dam's location in Anderson, Texas, within the Fort Worth District, highlights its significance in providing water supply to the surrounding area.

As a key water resource infrastructure in Anderson, Texas, Cox Lake Dam serves a critical role in water supply management. Its construction in 1974 underscores its longstanding contribution to the local community's water needs. While its hazard potential and condition assessment are not readily available, the dam's state-regulated status, permitting, and inspection signify ongoing efforts to ensure its safety and effectiveness in water supply management.

Year Completed

1974

Dam Length

635

Dam Height

16

River Or Stream

MITCHELL BRANCH

Primary Dam Type

Earth

Surface Area

16

Hydraulic Height

16

Nid Storage

131

Structural Height

16

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

16
       
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.