El Colina Lake Dam Reservoir Report

Last Updated: December 5, 2025

El Colina Lake Dam, located in Erath, Texas, was completed in 1966 and serves as a vital structure for recreational purposes.


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Summary

The dam, primarily owned by a private entity, stands at a height of 28 feet with a length of 620 feet, providing a storage capacity of 123 acre-feet. Despite its relatively small size, the dam plays a crucial role in managing water resources in the area, particularly for the TR-W Fork East Bosque River.

While El Colina Lake Dam does not have a spillway or locks, it is subject to periodic state inspections and permitting to ensure its safety and functionality. The dam's hazard potential is classified as "Not Available," with a risk assessment indicating a high level of risk. Although the condition assessment is not rated, the dam is maintained to meet regulatory standards. For water resource and climate enthusiasts, the El Colina Lake Dam serves as a fascinating example of how private entities can contribute to water management and recreational activities in the region.

Year Completed

1966

Dam Length

620

Dam Height

28

River Or Stream

TR-W FORK EAST BOSQUE RIV

Primary Dam Type

Earth

Surface Area

9

Hydraulic Height

28

Nid Storage

123

Structural Height

28

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

28
       
Seasonal Comparison

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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.