Lavon Lake Water Level Today - 488.70 ft, 83.9% Full

Trinity River · Texas - updated daily from official gauges

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

• Lavon Lake is 83.9% full - high on this site's capacity scale - as of September 8, 2026. Surface elevation 488.70 feet, storage 343,880 acre-feet (capacity basis 409,757 acre-feet), per Texas Water Development Board data.
• That elevation is its lowest September reading since 2023, and 13.83 feet above its record low of 474.87 ft (November 5, 2006), in a daily record going back to September 30, 1988 (TWDB's period of record for this reservoir).
• Storage is 105% of the September 8 average across 38 years of record.
• Lavon Lake is falling: elevation changed -0.36 ft over the past week, -1.86 ft over the past month, and -1.51 ft over the past year, per Texas Water Development Board data.

Lavon Lake is within 13.83 feet of the lowest surface elevation in its daily record, set on November 5, 2006.

Lavon Lake vs its record low

In the daily record used by this site (going back to September 30, 1988 (TWDB's period of record for this reservoir)), Lavon Lake's lowest surface elevation was 474.87 feet on November 5, 2006, when storage was 135,469 acre-feet. As of September 8, 2026, Lavon Lake is at 488.70 feet - 13.83 feet above that record. The record high in the same series was 504.57 ft on May 4, 1990.

Lavon Lake storage in context

Lavon Lake water level, past 12 months

83.9% full at the latest reading - across the past 12 months it ranged from 83.9% (November 17, 2025) to 100.0% (July 18, 2026). Percent full is storage against the 409,757-acre-foot capacity basis, not a share of the elevation plotted above.

Lavon Lake elevation, full record

83.9% full at the latest reading - across the storage record since October 2, 1953 it ranged from 0.0% (October 2, 1953) to 100.0% (July 18, 2026). Percent full is storage against the 409,757-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 Lavon Lake today?

As of September 8, 2026, Lavon Lake's surface elevation is 488.70 feet, with 343,880 acre-feet in storage - 83.9% of the 409,757 acre-foot capacity basis. Source: Water Data for Texas (TWDB) daily data.

How full is Lavon Lake?

Lavon Lake is 83.9% full as of September 8, 2026. Its storage is 105% of the September 8 average across its record since 1988. Source: Water Data for Texas (TWDB) daily data.

When was Lavon Lake last full?

Lavon Lake was last at or above 95% of its 409,757 acre-foot capacity basis on August 2, 2026. As of September 8, 2026 it is 83.9% full. Source: Water Data for Texas (TWDB) daily data.

Is Lavon Lake rising or falling?

Lavon Lake is falling: its elevation changed -0.36 feet over the week ending September 8, 2026, -1.86 ft over the past month, and -1.51 feet over the past year. Source: Water Data for Texas (TWDB) daily data.

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

Lavon Lake's lowest surface elevation in the daily record since September 30, 1988 was 474.87 feet on November 5, 2006, per the daily record used by this site. As of September 8, 2026 the reservoir is 13.83 feet above that record low.

About this gauge

Lavon Lake is a Texas water-supply reservoir in the Trinity River basin. Water Data for Texas publishes a conservation pool elevation of 1,975.0 ft and a conservation capacity of 409,757 acre-feet, with daily water level and storage recorded since 1953-10-02.

Operator

Texas Water Development Board (Water Data for Texas)

Station

lavon

Measurements

Daily water level and conservation storage

River

Trinity River

State

Texas

Full pool reference

1,975.0 ft

Capacity basis

409,757 acre-feet (Water Data for Texas (TWDB) conservation capacity)

Period of record

September 30, 1988 (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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