Cumberland Lake Dam Reservoir Report

Last Updated: December 5, 2025

Cumberland Lake Dam, located in Tyler, Texas, is a local government-owned structure that serves multiple purposes, including flood control and water supply management.


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Summary

Completed in 2017, this earth-type dam stands at a height of 20.7 feet and has a length of 605 feet, with a storage capacity of 85 acre-feet. The dam's primary source agency is the state of Texas, and it is regulated and inspected by the Texas Commission on Environmental Quality (TCEQ).

The dam, designed by Adams Engineering, is situated on TR W Mud Creek and is part of the Fort Worth District of the US Army Corps of Engineers. It has uncontrolled spillways and two uncontrolled outlet gates. The condition assessment of the dam as of March 2018 was deemed satisfactory, with a moderate risk level. The last inspection took place in October 2017, with inspections occurring every five years to ensure the dam's safety and integrity.

Overall, Cumberland Lake Dam plays a crucial role in managing water resources and mitigating flood risks in Smith County, Texas. With its strategic location and design, the dam contributes to the conservation of water and protection of surrounding areas from potential flooding events. Climate and water resource enthusiasts would find interest in monitoring the operations and maintenance of this essential infrastructure for sustainable water management in the region.

Year Completed

2017

Dam Length

605

Dam Height

20.7

River Or Stream

TR W MUD CREEK

Primary Dam Type

Earth

Surface Area

2.95

Hydraulic Height

20.7

Drainage Area

0.19

Nid Storage

85

Structural Height

20.7

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

21
       
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.