Robert Lee Dam Reservoir Report

Last Updated: December 5, 2025

Robert Lee Dam, located in Coke County, Texas, along the Colorado River, is a vital water resource and recreational hub in the region.


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Summary

Built in 1969 by FREESE AND NICHOLS, this Earth-type dam stands at a height of 140 feet, with a storage capacity of over a million acre-feet. The dam serves multiple purposes, including water supply and recreation, offering a surface area of 15,100 acres for outdoor enthusiasts to enjoy.

Despite its significant contribution to the local community, Robert Lee Dam is currently assessed to be in poor condition, highlighting the importance of regular inspections and maintenance to ensure its structural integrity. The dam features various outlet gates, including Other Controlled, Uncontrolled, and Vertical Lift gates, demonstrating its versatility in water management. Additionally, the dam's hazardous potential is considered to be "Not Available," emphasizing the need for continued monitoring and risk assessment to safeguard the surrounding areas.

Managed by the local government and regulated by the Texas Commission on Environmental Quality (TCEQ), Robert Lee Dam remains a critical infrastructure for water supply and recreational activities in the region. With its scenic location and historical significance, the dam stands as a testament to human ingenuity in harnessing water resources while also serving as a reminder of the ongoing need for environmental stewardship and sustainable management practices in the face of changing climate conditions.

Year Completed

1969

Dam Length

18300

Dam Height

140

River Or Stream

COLORADO RIVER

Primary Dam Type

Earth

Surface Area

15100

Hydraulic Height

139

Drainage Area

4140

Nid Storage

1139200

Structural Height

140

Outlet Gates

Other Controlled - 1, Uncontrolled - 1, Vertical Lift - 12

Hazard Potential

Not Available

Foundations

Soil

Nid Height

140
       
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.