Light Lake No 2 Dam Reservoir Report

Last Updated: December 6, 2025

Light Lake No 2 Dam, situated in Dimmit, Texas, is a private-owned structure built in 1974 primarily for water supply purposes.


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Summary

This earth-type dam stands at a height of 14 feet and spans a length of 1100 feet, with a storage capacity of 154 acre-feet. Despite its modest size, the dam poses a high risk level, highlighting the importance of proper risk management measures to ensure its structural integrity and safety.

Although not regulated by the state, the dam undergoes regular inspections and permitting processes, indicating a commitment to maintaining its functionality. With no spillway and minimal hazard potential data available, the dam's condition assessment remains unrated. However, with a lack of emergency action plans and inundation maps prepared, there is room for improvement in emergency preparedness to mitigate potential risks associated with the dam.

Water resource and climate enthusiasts may find Light Lake No 2 Dam an intriguing case study for water supply infrastructure in Texas. The dam's unique design features, limited regulatory oversight, and high risk designation present a complex interplay of factors that underscore the importance of effective risk management strategies in safeguarding water resources and infrastructure against potential hazards.

Year Completed

1974

Dam Length

1100

Dam Height

14

River Or Stream

TR-SAN ROQUE CREEK

Primary Dam Type

Earth

Surface Area

21

Hydraulic Height

14

Nid Storage

154

Structural Height

14

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

14
       
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.