Lake Tawakoni Water Level Today - 435.90 ft, 93.4% Full

Sabine River · Texas - updated daily from official gauges

Western Reservoir Conditions·Daily·No. 47·Tuesday, September 8, 2026·Latest reading September 8, 2026

• Lake Tawakoni is 93.4% full - high on this site's capacity scale - as of September 8, 2026. Surface elevation 435.90 feet, storage 813,827 acre-feet (capacity basis 871,685 acre-feet), per Texas Water Development Board data.
• That elevation is its lowest September reading since 2023, and 10.98 feet above its record low of 424.92 ft (December 28, 2006), in a daily record going back to October 2, 1995 (TWDB's period of record for this reservoir).
• Storage is 103% of the September 8 average across 30 years of record.
• Lake Tawakoni is falling: elevation changed -0.10 ft over the past week, -0.92 ft over the past month, and -1.13 ft over the past year, per Texas Water Development Board data.

Lake Tawakoni is holding near the top of its operating range at 93.4% of capacity, -1.13 ft over the past twelve months.

Lake Tawakoni operating range

Lake Tawakoni is operated within a narrow band rather than drawn down and refilled over years. As of September 8, 2026 it sits 1.60 feet below its 437.5 ft full-pool reference. Over the past two years the daily record ranges from 434.50 ft (December 13, 2024) to 439.86 ft (June 14, 2025) - a band of 5.36 feet. The highest reading in the full record is 441.56 ft on November 30, 2015.

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 Tawakoni storage in context

Lake Tawakoni water level, past 12 months

93.4% full at the latest reading - across the past 12 months it ranged from 91.7% (January 21, 2026) to 100.0% (July 7, 2026). Percent full is storage against the 871,685-acre-foot capacity basis, not a share of the elevation plotted above.

Lake Tawakoni elevation, full record

93.4% full at the latest reading - across the storage record since October 2, 1960 it ranged from 0.0% (October 2, 1960) to 107.4% (July 13, 2000). Percent full is storage against the 871,685-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 Tawakoni today?

As of September 8, 2026, Lake Tawakoni's surface elevation is 435.90 feet, with 813,827 acre-feet in storage - 93.4% of the 871,685 acre-foot capacity basis. Source: Water Data for Texas (TWDB) daily data.

How full is Lake Tawakoni?

Lake Tawakoni is 93.4% full as of September 8, 2026. Its storage is 103% of the September 8 average across its record since 1995. Source: Water Data for Texas (TWDB) daily data.

When was Lake Tawakoni last full?

Lake Tawakoni was last at or above 95% of its 871,685 acre-foot capacity basis on August 23, 2026. As of September 8, 2026 it is 93.4% full. Source: Water Data for Texas (TWDB) daily data.

Is Lake Tawakoni rising or falling?

Lake Tawakoni is falling: its elevation changed -0.10 feet over the week ending September 8, 2026, -0.92 ft over the past month, and -1.13 feet over the past year. Source: Water Data for Texas (TWDB) daily data.

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

Lake Tawakoni's lowest surface elevation in the daily record since October 2, 1995 was 424.92 feet on December 28, 2006, per the daily record used by this site. As of September 8, 2026 the reservoir is 10.98 feet above that record low.

About this gauge

Lake Tawakoni is a Texas water-supply reservoir in the Sabine River basin. Water Data for Texas publishes a conservation pool elevation of 437.5 ft and a conservation capacity of 871,685 acre-feet, with daily water level and storage recorded since 1960-10-02.

Operator

Texas Water Development Board (Water Data for Texas)

Station

tawakoni

Measurements

Daily water level and conservation storage

River

Sabine River

State

Texas

Full pool reference

437.5 ft

Capacity basis

871,685 acre-feet (Water Data for Texas (TWDB) conservation capacity)

Period of record

October 2, 1995 (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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