Lake Travis Water Level Today - 677.39 ft, 93.9% Full

Mansfield Dam · Colorado River (Texas) · Texas - updated daily from official gauges

Western Reservoir Conditions·Daily·No. 92·Friday, October 23, 2026·Latest reading October 23, 2026

• Lake Travis is 93.9% full - high on this site's capacity scale - as of October 23, 2026. Surface elevation 677.39 feet, storage 1,030,807 acre-feet (capacity basis 1,098,044 acre-feet), per Texas Water Development Board data.
• That elevation is 63.21 feet above its record low of 614.18 ft (August 14, 1951, the lowest since the reservoir first filled), in a daily record going back to September 30, 1940 (TWDB's period of record for this reservoir).
• Storage is 122% of the October 23 average across 85 years of record.
• Lake Travis is falling: elevation changed -0.35 ft over the past week, +2.08 ft over the past month, and +7.78 ft over the past year, per Texas Water Development Board data.

Lake Travis is holding near the top of its operating range at 93.9% of capacity, +7.78 ft over the past twelve months.

Lake Travis operating range

Lake Travis is operated within a narrow band rather than drawn down and refilled over years. As of October 23, 2026 it sits 3.61 feet below its 681.0 ft full-pool reference. Over the past two years the daily record ranges from 635.30 ft (May 22, 2025) to 684.71 ft (July 19, 2026) - a band of 49.41 feet. The highest reading in the full record is 710.31 ft on December 26, 1991.

Storage above the full-pool reference is flood control space, not supply. A reservoir reading at or near 100% of its conservation capacity is being operated normally - it is not a surplus, and the operator may release water to hold that space.

Lake Travis storage in context

Lake Travis water level, past 12 months

93.9% full at the latest reading - across the past 12 months it ranged from 72.6% (April 19, 2026) to 100.0% (August 2, 2026). Percent full is storage against the 1,098,044-acre-foot capacity basis, not a share of the elevation plotted above.

Lake Travis elevation, full record

93.9% full at the latest reading - across the storage record since September 30, 1940 it ranged from 1.7% (October 31, 1940) to 101.4% (July 5, 2019). Percent full is storage against the 1,098,044-acre-foot capacity basis, not a share of the elevation plotted above. Every percentage here is measured against today's capacity basis; a reservoir's surveyed capacity changes as sediment accumulates behind the dam, so early-record percentages are indicative rather than exact.

Last 14 daily readings

Frequently asked questions

What is the water level of Lake Travis today?

As of October 23, 2026, Lake Travis's surface elevation is 677.39 feet, with 1,030,807 acre-feet in storage - 93.9% of the 1,098,044 acre-foot capacity basis. Source: Water Data for Texas (TWDB) daily data.

How full is Lake Travis?

Lake Travis is 93.9% full as of October 23, 2026. Its storage is 122% of the October 23 average across its record since 1940. Source: Water Data for Texas (TWDB) daily data.

When was Lake Travis last full?

Lake Travis was last at or above 95% of its 1,098,044 acre-foot capacity basis on September 3, 2026. As of October 23, 2026 it is 93.9% full. Source: Water Data for Texas (TWDB) daily data.

Is Lake Travis rising or falling?

Lake Travis is falling: its elevation changed -0.35 feet over the week ending October 23, 2026, +2.08 ft over the past month, and +7.78 feet over the past year. Source: Water Data for Texas (TWDB) daily data.

What was Lake Travis's lowest water level on record?

Lake Travis's lowest surface elevation since it first filled (its first near-full reading in this series is from 1942) was 614.18 feet on August 14, 1951, per the daily record used by this site. As of October 23, 2026 the reservoir is 63.21 feet above that record low.

About this gauge

Lake Travis, behind Mansfield Dam northwest of Austin, is the largest of the Highland Lakes operated by the Lower Colorado River Authority on the Texas Colorado River, and the region's main flood-control and water-supply reservoir.

Operator

Texas Water Development Board (Water Data for Texas)

Station

travis

Measurements

Daily water level and conservation storage

Dam

Mansfield Dam

River

Colorado River (Texas)

State

Texas

Coordinates

30.3910, -97.9066 (USGS NWIS site 08154500 (NAD83))

Full pool reference

681.0 ft

Capacity basis

1,098,044 acre-feet (Water Data for Texas (TWDB) conservation capacity)

Period of record

September 30, 1940 (TWDB's period of record for this reservoir)

Status

Provisional - subject to revision by the reporting agency

Update cadence

Daily

TWDB reports conservation storage against a conservation capacity that is restated as new volumetric surveys are completed, so a percent-full figure here can change without the water level changing. TWDB's methodology page is linked in the notes below.

Download the daily CSV (date, elevation ft, storage AF) or see all data downloads.

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