Old Lampasas Dam Reservoir Report

Last Updated: December 5, 2025

Old Lampasas Dam, located in Travis County, Texas, stands as a testament to engineering ingenuity with its earth buttress design towering at a height of 34 feet and stretching 480 feet in length.


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Summary

Completed in 1984, this dam on Bull Creek not only serves as a water resource but also holds historical significance in the area. However, recent assessments have deemed its condition as poor, highlighting the need for potential maintenance and restoration efforts to ensure its longevity and functionality.

Despite its age, Old Lampasas Dam remains a regulated structure under the Texas Commission on Environmental Quality (TCEQ), with state permitting, inspection, and enforcement in place. The dam's primary purpose, classified as 'Other', reflects its multi-faceted role in water management within the region. With a storage capacity of 73 acre-feet and a drainage area of 248 square miles, the dam plays a crucial role in mitigating flood risks and managing water resources in the area, contributing to the overall resilience of the local ecosystem.

While facing challenges related to its condition assessment and hazard potential, Old Lampasas Dam continues to be monitored for risk management and emergency preparedness. With a moderate risk rating and a history of inspections, the dam serves as a focal point for both water resource enthusiasts and climate advocates, highlighting the intersection of infrastructure, environmental stewardship, and community resilience in the face of changing climate patterns.

Year Completed

1984

Dam Length

480

Dam Height

34

River Or Stream

TR. BULL CREEK

Primary Dam Type

Earth

Hydraulic Height

34

Drainage Area

248

Nid Storage

73

Structural Height

34

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

34
       
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.