Martin Lake Water Level Today - 303.29 ft, 83.2% Full

Sabine River · Texas - updated daily from official gauges

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

• Martin Lake is 83.2% full - high on this site's capacity scale - as of September 8, 2026. Surface elevation 303.29 feet, storage 62,969 acre-feet (capacity basis 75,726 acre-feet), per Texas Water Development Board data.
• That elevation is its lowest September reading since 2023, and 8.32 feet above its record low of 294.97 ft (October 20, 2011), in a daily record going back to October 2, 1995 (TWDB's period of record for this reservoir).
• Storage is 100% of the September 8 average across 31 years of record.
• Martin Lake is falling: elevation changed -0.18 ft over the past week, -1.12 ft over the past month, and -1.83 ft over the past year, per Texas Water Development Board data.

Martin Lake has fallen 1.83 feet in twelve months, and now sits 8.32 feet above its record low.

Martin Lake vs its record low

In the daily record used by this site (going back to October 2, 1995 (TWDB's period of record for this reservoir)), Martin Lake's lowest surface elevation was 294.97 feet on October 20, 2011, when storage was 32,933 acre-feet. As of September 8, 2026, Martin Lake is at 303.29 feet - 8.32 feet above that record. The record high in the same series was 307.92 ft on April 30, 2016.

Martin Lake storage in context

Martin Lake water level, past 12 months

83.2% full at the latest reading - across the past 12 months it ranged from 83.2% (September 8, 2026) to 100.0% (June 22, 2026). Percent full is storage against the 75,726-acre-foot capacity basis, not a share of the elevation plotted above.

Martin Lake elevation, full record

83.2% full at the latest reading - across the storage record since April 11, 1974 it ranged from 0.5% (April 11, 1974) to 100.0% (June 22, 2026). Percent full is storage against the 75,726-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 Martin Lake today?

As of September 8, 2026, Martin Lake's surface elevation is 303.29 feet, with 62,969 acre-feet in storage - 83.2% of the 75,726 acre-foot capacity basis. Source: Water Data for Texas (TWDB) daily data.

How full is Martin Lake?

Martin Lake is 83.2% full as of September 8, 2026. Its storage is 100% of the September 8 average across its record since 1995. Source: Water Data for Texas (TWDB) daily data.

When was Martin Lake last full?

Martin Lake was last at or above 95% of its 75,726 acre-foot capacity basis on July 19, 2026. As of September 8, 2026 it is 83.2% full. Source: Water Data for Texas (TWDB) daily data.

Is Martin Lake rising or falling?

Martin Lake is falling: its elevation changed -0.18 feet over the week ending September 8, 2026, -1.12 ft over the past month, and -1.83 feet over the past year. Source: Water Data for Texas (TWDB) daily data.

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

Martin Lake's lowest surface elevation in the daily record since October 2, 1995 was 294.97 feet on October 20, 2011, per the daily record used by this site. As of September 8, 2026 the reservoir is 8.32 feet above that record low.

About this gauge

Martin Lake is a Texas water-supply reservoir in the Sabine River basin. Water Data for Texas publishes a conservation pool elevation of 306.0 ft and a conservation capacity of 75,726 acre-feet, with daily water level and storage recorded since 1974-04-11.

Operator

Texas Water Development Board (Water Data for Texas)

Station

martin

Measurements

Daily water level and conservation storage

River

Sabine River

State

Texas

Full pool reference

306.0 ft

Capacity basis

75,726 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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