E. V. Spence Reservoir Water Level Today - 1,842.85 ft, 9.8% Full

Colorado River (Texas) · Texas - updated daily from official gauges

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

• E. V. Spence Reservoir is 9.8% full - critically low on this site's capacity scale - as of September 8, 2026. Surface elevation 1,842.85 feet, storage 50,667 acre-feet (capacity basis 517,272 acre-feet), per Texas Water Development Board data.
• That elevation is its lowest September reading since 2016, and 32.78 feet above its record low of 1,810.07 ft (September 27, 2012), in a daily record going back to January 25, 1997 (TWDB's period of record for this reservoir).
• Storage is 77% of the September 8 average across 30 years of record.
• E. V. Spence Reservoir is falling: elevation changed -0.07 ft over the past week, -1.02 ft over the past month, and -5.84 ft over the past year, per Texas Water Development Board data.

E. V. Spence Reservoir has fallen 5.84 feet in twelve months, and now sits 32.78 feet above its record low.

E. V. Spence Reservoir vs its record low

In the daily record used by this site (going back to January 25, 1997 (TWDB's period of record for this reservoir)), E. V. Spence Reservoir's lowest surface elevation was 1,810.07 feet on September 27, 2012, when storage was 978 acre-feet. As of September 8, 2026, E. V. Spence Reservoir is at 1,842.85 feet - 32.78 feet above that record. The record high in the same series was 1,865.20 ft on June 12, 2019.

E. V. Spence Reservoir storage in context

E. V. Spence Reservoir water level, past 12 months

9.8% full at the latest reading - across the past 12 months it ranged from 9.8% (September 4, 2026) to 14.1% (September 8, 2025). Percent full is storage against the 517,272-acre-foot capacity basis, not a share of the elevation plotted above.

E. V. Spence Reservoir elevation, full record

9.8% full at the latest reading - across the storage record since December 2, 1968 it ranged from 0.0% (April 9, 1969) to 68.7% (June 17, 1987). Percent full is storage against the 517,272-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 E. V. Spence Reservoir today?

As of September 8, 2026, E. V. Spence Reservoir's surface elevation is 1,842.85 feet, with 50,667 acre-feet in storage - 9.8% of the 517,272 acre-foot capacity basis. Source: Water Data for Texas (TWDB) daily data.

How full is E. V. Spence Reservoir?

E. V. Spence Reservoir is 9.8% full as of September 8, 2026. Its storage is 77% of the September 8 average across its record since 1997. Source: Water Data for Texas (TWDB) daily data.

Is E. V. Spence Reservoir rising or falling?

E. V. Spence Reservoir is falling: its elevation changed -0.07 feet over the week ending September 8, 2026, -1.02 ft over the past month, and -5.84 feet over the past year. Source: Water Data for Texas (TWDB) daily data.

What was E. V. Spence Reservoir's lowest water level on record?

E. V. Spence Reservoir's lowest surface elevation in the daily record since January 25, 1997 was 1,810.07 feet on September 27, 2012, per the daily record used by this site. As of September 8, 2026 the reservoir is 32.78 feet above that record low.

About this gauge

E. V. Spence Reservoir is a Texas water-supply reservoir in the Colorado River (Texas) basin. Water Data for Texas publishes a conservation pool elevation of 1,898.0 ft and a conservation capacity of 517,272 acre-feet, with daily water level and storage recorded since 1968-12-02.

Operator

Texas Water Development Board (Water Data for Texas)

Station

e-v-spence

Measurements

Daily water level and conservation storage

River

Colorado River (Texas)

State

Texas

Full pool reference

1,898.0 ft

Capacity basis

517,272 acre-feet (Water Data for Texas (TWDB) conservation capacity)

Period of record

January 25, 1997 (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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