Domaschk Biar Lake Dam Reservoir Report

Last Updated: December 20, 2025

Located in Lee County, Texas, the Domaschk Biar Lake Dam is a private earth dam completed in 1979 with a primary purpose of fire protection, stock, or small fish pond.


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Summary

The dam has a height of 15 feet and a length of 900 feet, creating a reservoir with a normal storage capacity of 110 acre-feet. The dam is situated on TR-Knobbs Creek and is regulated by the state, with permitting and inspection responsibilities falling under Texas jurisdiction.

The dam features an uncontrolled spillway with a width of 20 feet and one uncontrolled outlet gate. While the hazard potential and condition assessment are not available, the risk assessment has been rated as moderate. The Emergency Action Plan was last revised in 2012, indicating a commitment to ensuring the safety and integrity of the structure. With a maximum storage capacity of 240 acre-feet, the Domaschk Biar Lake Dam serves as a vital resource for water supply and wildlife habitat in the region.

Overall, the Domaschk Biar Lake Dam represents a crucial water management infrastructure in Lee County, Texas, providing essential services for fire protection, stock, and small fish pond purposes. As climate change continues to impact water resources, the maintenance and monitoring of dams like Domaschk Biar are essential to ensure their long-term functionality and resilience in the face of evolving environmental challenges.

Year Completed

1979

Dam Length

900

Dam Height

15

River Or Stream

TR-KNOBBS CREEK

Primary Dam Type

Earth

Surface Area

23

Hydraulic Height

15

Nid Storage

240

Structural Height

15

Outlet Gates

Uncontrolled - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

15
       
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.