Cavness Lake Dam Reservoir Report

Last Updated: December 5, 2025

Cavness Lake Dam, located in Travis County, Texas, stands as a private-owned structure with a rich history dating back to its completion in 1965.


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Summary

This Earth-type dam, standing at a height of 16 feet and a length of 780 feet, serves a primary purpose of "Other," contributing to the regulation of TR-DRY CREEK. Despite being in a high-risk category, with a hazard potential that is not available, the dam has not been rated for its condition assessment.

Operated under the jurisdiction of the Texas Commission on Environmental Quality (TCEQ) and subject to regular state inspection and enforcement, Cavness Lake Dam remains an important feature in the local water resource management system. With a storage capacity of 90 acre-feet and a normal storage level of 45 acre-feet, the dam plays a crucial role in regulating water flow and ensuring the safety of downstream areas. Though lacking in certain data points such as surface area and drainage area, the dam's significance in the region cannot be understated for water resource and climate enthusiasts.

Year Completed

1965

Dam Length

780

Dam Height

16

River Or Stream

TR-DRY CREEK

Primary Dam Type

Earth

Hydraulic Height

16

Nid Storage

90

Structural Height

16

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

16
       
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.