Lake Theo Dam Reservoir Report

Last Updated: December 20, 2025

Lake Theo Dam, located in Briscoe, Texas, is a state-regulated earth dam that serves primarily for recreational purposes.


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Summary

Built in 1963, this buttress dam stands at a height of 62 feet and has a length of 1000 feet. The dam has a storage capacity of 2050 acre-feet, with a normal storage level of 1184 acre-feet, covering a surface area of 76 acres.

The dam is situated on Holmes Creek and is under the jurisdiction of the TCEQ in Texas. It has an uncontrolled spillway with a width of 300 feet and three uncontrolled outlet gates. The dam has a moderate risk assessment rating of 3 and was last inspected in May 1986. Despite not having a hazard potential rating or a condition assessment, Lake Theo Dam continues to provide recreational opportunities for water resource and climate enthusiasts in the area.

Overall, Lake Theo Dam is a vital structure in the region, offering both water storage and recreational benefits to the community. With its scenic surroundings and historical significance, the dam remains a popular destination for outdoor activities and serves as a reminder of the importance of water resource management in the face of changing climate conditions.

Year Completed

1963

Dam Length

1000

Dam Height

62

River Or Stream

HOLMES CREEK

Primary Dam Type

Earth

Surface Area

76

Hydraulic Height

62

Drainage Area

8.43

Nid Storage

2050

Structural Height

62

Outlet Gates

Uncontrolled - 3

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

62
       
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.