Lake Fork Reservoir Water Level Today - 399.01 ft, 83.5% 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 Fork Reservoir is 83.5% full - high on this site's capacity scale - as of September 8, 2026. Surface elevation 399.01 feet, storage 505,847 acre-feet (capacity basis 606,088 acre-feet), per Texas Water Development Board data.
• That elevation is its lowest September reading since 2022, and 3.75 feet above its record low of 395.26 ft (December 3, 2011), in a daily record going back to October 2, 1988 (TWDB's period of record for this reservoir).
• Storage is 90% of the September 8 average across 37 years of record.
• Lake Fork Reservoir is falling: elevation changed -0.14 ft over the past week, -0.82 ft over the past month, and -3.13 ft over the past year, per Texas Water Development Board data.

Lake Fork Reservoir has fallen 3.13 feet in twelve months, and now sits 3.75 feet above its record low.

Lake Fork Reservoir vs its record low

In the daily record used by this site (going back to October 2, 1988 (TWDB's period of record for this reservoir)), Lake Fork Reservoir's lowest surface elevation was 395.26 feet on December 3, 2011, when storage was 421,021 acre-feet. As of September 8, 2026, Lake Fork Reservoir is at 399.01 feet - 3.75 feet above that record. The record high in the same series was 405.14 ft on December 28, 2015.

Lake Fork Reservoir storage in context

Lake Fork Reservoir water level, past 12 months

83.5% full at the latest reading - across the past 12 months it ranged from 83.5% (September 7, 2026) to 96.2% (September 8, 2025). Percent full is storage against the 606,088-acre-foot capacity basis, not a share of the elevation plotted above.

Lake Fork Reservoir elevation, full record

83.5% full at the latest reading - across the storage record since October 2, 1979 it ranged from 0.9% (December 12, 1979) to 104.8% (February 28, 2001). Percent full is storage against the 606,088-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 Fork Reservoir today?

As of September 8, 2026, Lake Fork Reservoir's surface elevation is 399.01 feet, with 505,847 acre-feet in storage - 83.5% of the 606,088 acre-foot capacity basis. Source: Water Data for Texas (TWDB) daily data.

How full is Lake Fork Reservoir?

Lake Fork Reservoir is 83.5% full as of September 8, 2026. Its storage is 90% of the September 8 average across its record since 1988. Source: Water Data for Texas (TWDB) daily data.

When was Lake Fork Reservoir last full?

Lake Fork Reservoir was last at or above 95% of its 606,088 acre-foot capacity basis on September 18, 2025. As of September 8, 2026 it is 83.5% full. Source: Water Data for Texas (TWDB) daily data.

Is Lake Fork Reservoir rising or falling?

Lake Fork Reservoir is falling: its elevation changed -0.14 feet over the week ending September 8, 2026, -0.82 ft over the past month, and -3.13 feet over the past year. Source: Water Data for Texas (TWDB) daily data.

What was Lake Fork Reservoir's lowest water level on record?

Lake Fork Reservoir's lowest surface elevation in the daily record since October 2, 1988 was 395.26 feet on December 3, 2011, per the daily record used by this site. As of September 8, 2026 the reservoir is 3.75 feet above that record low.

About this gauge

Lake Fork Reservoir is a Texas water-supply reservoir in the Sabine River basin. Water Data for Texas publishes a conservation pool elevation of 403.0 ft and a conservation capacity of 606,088 acre-feet, with daily water level and storage recorded since 1979-10-02.

Operator

Texas Water Development Board (Water Data for Texas)

Station

fork

Measurements

Daily water level and conservation storage

River

Sabine River

State

Texas

Full pool reference

403.0 ft

Capacity basis

606,088 acre-feet (Water Data for Texas (TWDB) conservation capacity)

Period of record

October 2, 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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