Lk Travis Nr Austin Reservoir Report

Last Updated: December 5, 2025

Lake Travis is a large reservoir located northwest of Austin, TX, Texas, spanning over 30 miles in length and 4.5 miles in width.


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Summary

The lake was formed in 1942 following the construction of the Mansfield Dam on the Colorado River. As a result, the lake has become a popular destination for boating, fishing, swimming, and other water-based recreational activities.

The hydrology of Lake Travis is heavily influenced by rainfall in the region, which feeds into the Colorado River and ultimately the lake. Snowpack from the nearby Rocky Mountains also contributes to surface flow in the lake.

Agriculture is an important use of the surrounding land, with many ranches and farms producing crops such as corn, hay, and cotton. The lake also serves as a source of drinking water for nearby communities. In recent years, the lake has experienced periods of drought and low water levels due to decreased rainfall in the region.

Reservoir Details

Lake Or Reservoir Water Surface Elevation Above Navd 1988, Ft 24hr Change -0.01%
Percent of Normal 102%
Minimum 627.54 ft
2023-10-25
Maximum 676.01 ft
2025-07-27
Average 651 ft
       
Seasonal Comparison
Elevation Of Reservoir Water Surface Above Datum, Ft Levels
Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft Levels
Lake Or Reservoir Water Surface Elevation Above Navd 1988, Ft Levels

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.