Lost Creek Reservoir Water Level Today - 1,005.93 ft, 88.9% Full

Trinity River · Texas - updated daily from official gauges

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

• Lost Creek Reservoir is 88.9% full - high on this site's capacity scale - as of September 8, 2026. Surface elevation 1,005.93 feet, storage 10,628 acre-feet (capacity basis 11,950 acre-feet), per Texas Water Development Board data.
• That elevation is its lowest September reading since 2014, and 10.51 feet above its record low of 995.42 ft (February 20, 2015), in a daily record going back to March 4, 1999 (TWDB's period of record for this reservoir).
• Storage is 99% of the September 8 average across 28 years of record.
• Lost Creek Reservoir is falling: elevation changed -0.19 ft over the past week, -0.97 ft over the past month, and -3.19 ft over the past year, per Texas Water Development Board data.

Lost Creek Reservoir has fallen 3.19 feet in twelve months, and now sits 10.51 feet above its record low.

Lost Creek Reservoir vs its record low

In the daily record used by this site (going back to March 4, 1999 (TWDB's period of record for this reservoir)), Lost Creek Reservoir's lowest surface elevation was 995.42 feet on February 20, 2015, when storage was 7,149 acre-feet. As of September 8, 2026, Lost Creek Reservoir is at 1,005.93 feet - 10.51 feet above that record. The record high in the same series was 1,017.94 ft on April 18, 2016.

Lost Creek Reservoir storage in context

Lost Creek Reservoir water level, past 12 months

88.9% full at the latest reading - across the past 12 months it ranged from 88.9% (September 8, 2026) to 98.7% (September 8, 2025). Percent full is storage against the 11,950-acre-foot capacity basis, not a share of the elevation plotted above.

Lost Creek Reservoir elevation, full record

88.9% full at the latest reading - across the storage record since March 4, 1999 it ranged from 59.8% (February 20, 2015) to 100.0% (June 18, 2025). Percent full is storage against the 11,950-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 Lost Creek Reservoir today?

As of September 8, 2026, Lost Creek Reservoir's surface elevation is 1,005.93 feet, with 10,628 acre-feet in storage - 88.9% of the 11,950 acre-foot capacity basis. Source: Water Data for Texas (TWDB) daily data.

How full is Lost Creek Reservoir?

Lost Creek Reservoir is 88.9% full as of September 8, 2026. Its storage is 99% of the September 8 average across its record since 1999. Source: Water Data for Texas (TWDB) daily data.

When was Lost Creek Reservoir last full?

Lost Creek Reservoir was last at or above 95% of its 11,950 acre-foot capacity basis on June 29, 2026. As of September 8, 2026 it is 88.9% full. Source: Water Data for Texas (TWDB) daily data.

Is Lost Creek Reservoir rising or falling?

Lost Creek Reservoir is falling: its elevation changed -0.19 feet over the week ending September 8, 2026, -0.97 ft over the past month, and -3.19 feet over the past year. Source: Water Data for Texas (TWDB) daily data.

What was Lost Creek Reservoir's lowest water level on record?

Lost Creek Reservoir's lowest surface elevation in the daily record since March 4, 1999 was 995.42 feet on February 20, 2015, per the daily record used by this site. As of September 8, 2026 the reservoir is 10.51 feet above that record low.

About this gauge

Lost Creek Reservoir is a Texas water-supply reservoir in the Trinity River basin. Water Data for Texas publishes a conservation pool elevation of 1,009.5 ft and a conservation capacity of 11,950 acre-feet, with daily water level and storage recorded since 1999-03-04.

Operator

Texas Water Development Board (Water Data for Texas)

Station

lost-creek

Measurements

Daily water level and conservation storage

River

Trinity River

State

Texas

Full pool reference

1,009.5 ft

Capacity basis

11,950 acre-feet (Water Data for Texas (TWDB) conservation capacity)

Period of record

March 4, 1999 (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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