Choke Canyon Reservoir Water Level Today - 190.60 ft, 21.3% Full

Nueces River · Texas - updated daily from official gauges

Western Reservoir Conditions·Daily·No. 92·Friday, October 23, 2026·Latest reading October 23, 2026

• Choke Canyon Reservoir is 21.3% full - very low on this site's capacity scale - as of October 23, 2026. Surface elevation 190.60 feet, storage 140,973 acre-feet (capacity basis 662,820 acre-feet), per Texas Water Development Board data.
• That elevation is 12.36 feet above its record low of 178.24 ft (May 18, 2026), in a daily record going back to October 1, 1999 (TWDB's period of record for this reservoir).
• Storage is 39% of the October 23 average across 28 years of record.
• Choke Canyon Reservoir is falling: elevation changed -0.19 ft over the past week, -0.66 ft over the past month, and +8.17 ft over the past year, per Texas Water Development Board data.

Choke Canyon Reservoir has risen 8.17 feet in twelve months, to 39% of its October 23 storage average.

Choke Canyon Reservoir vs its record low

In the daily record used by this site (going back to October 1, 1999 (TWDB's period of record for this reservoir)), Choke Canyon Reservoir's lowest surface elevation was 178.24 feet on May 18, 2026, when storage was 47,318 acre-feet. As of October 23, 2026, Choke Canyon Reservoir is at 190.60 feet - 12.36 feet above that record. The record high in the same series was 223.46 ft on September 12, 2002.

Choke Canyon Reservoir storage in context

Choke Canyon Reservoir water level, past 12 months

21.3% full at the latest reading - across the past 12 months it ranged from 7.1% (May 18, 2026) to 25.0% (August 1, 2026). Percent full is storage against the 662,820-acre-foot capacity basis, not a share of the elevation plotted above.

Choke Canyon Reservoir elevation, full record

21.3% full at the latest reading - across the storage record since October 1, 1984 it ranged from 0.7% (October 1, 1984) to 104.9% (October 18, 2007). Percent full is storage against the 662,820-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 Choke Canyon Reservoir today?

As of October 23, 2026, Choke Canyon Reservoir's surface elevation is 190.60 feet, with 140,973 acre-feet in storage - 21.3% of the 662,820 acre-foot capacity basis. Source: Water Data for Texas (TWDB) daily data.

How full is Choke Canyon Reservoir?

Choke Canyon Reservoir is 21.3% full as of October 23, 2026. Its storage is 39% of the October 23 average across its record since 1999. Source: Water Data for Texas (TWDB) daily data.

When was Choke Canyon Reservoir last full?

Choke Canyon Reservoir was last at or above 95% of its 662,820 acre-foot capacity basis on July 10, 2008. As of October 23, 2026 it is 21.3% full. Source: Water Data for Texas (TWDB) daily data.

Is Choke Canyon Reservoir rising or falling?

Choke Canyon Reservoir is falling: its elevation changed -0.19 feet over the week ending October 23, 2026, -0.66 ft over the past month, and +8.17 feet over the past year. Source: Water Data for Texas (TWDB) daily data.

What was Choke Canyon Reservoir's lowest water level on record?

Choke Canyon Reservoir's lowest surface elevation in the daily record since October 1, 1999 was 178.24 feet on May 18, 2026, per the daily record used by this site. As of October 23, 2026 the reservoir is 12.36 feet above that record low.

About this gauge

Choke Canyon Reservoir is a Texas water-supply reservoir in the Nueces River basin. Water Data for Texas publishes a conservation pool elevation of 220.5 ft and a conservation capacity of 662,820 acre-feet, with daily water level and storage recorded since 1984-10-01.

Operator

Texas Water Development Board (Water Data for Texas)

Station

choke-canyon

Measurements

Daily water level and conservation storage

River

Nueces River

State

Texas

Full pool reference

220.5 ft

Capacity basis

662,820 acre-feet (Water Data for Texas (TWDB) conservation capacity)

Period of record

October 1, 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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