Alkek Lake No 1 Dam Reservoir Report

Last Updated: December 5, 2025

Located in Bandera, Texas, Alkek Lake No 1 Dam is a privately owned structure built in 1960 for fire protection, stock, and small fish pond purposes.


°F

°F

mph

Wind

%

Humidity

Summary

The earth dam stands at 36 feet in height and spans 360 feet in length, with a storage capacity of 423 acre-feet. It is situated on San Julian Creek and is regulated by the state with inspection and permitting requirements in place.

Despite being uncontrolled, the dam features two outlet gates and a spillway width of 239 feet. The dam's hazard potential is not available, and its condition assessment remains unrated. The last inspection was conducted in March 2011, with a moderate risk classification assigned. Given its multifaceted uses and recreational opportunities, Alkek Lake No 1 Dam serves as a vital water resource for the community while also holding historical significance in the region.

Year Completed

1960

Dam Length

360

Dam Height

36

River Or Stream

SAN JULIAN CREEK

Primary Dam Type

Earth

Surface Area

19

Hydraulic Height

36

Drainage Area

12

Nid Storage

423

Structural Height

36

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

36
       
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.