Allerkamp Ranch Lake Dam Reservoir Report

Last Updated: December 6, 2025

The Allerkamp Ranch Lake Dam, located in La Salle, Texas, was completed in 1950 and stands at a height of 18 feet with a length of 1200 feet.


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Summary

This earth dam, with a buttress core type, serves a primary purpose of "Other" and has a storage capacity of 192 acre-feet. The dam is situated on the TR-Nueces River and is managed by a private owner.

Despite not being regulated by the state, the Allerkamp Ranch Lake Dam poses a high risk (2) and has not been rated for its condition assessment. With no spillway and limited information on inspections and emergency preparedness, the dam is surrounded by a surface area of 3.3 acres but has not been associated with any other structures. The risk management measures and guidelines for emergency action plans are also not readily available.

Water resource and climate enthusiasts will find the Allerkamp Ranch Lake Dam an intriguing structure due to its unique design and high-risk classification. With limited information on its condition assessment and emergency preparedness, there is a need for further evaluation and potential improvements to ensure the safety and stability of this dam in the face of potential natural disasters and climate-related challenges.

Year Completed

1950

Dam Length

1200

Dam Height

18

River Or Stream

TR-NUECES RIVER

Primary Dam Type

Earth

Surface Area

3.3

Hydraulic Height

18

Nid Storage

192

Structural Height

18

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

18
       
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.