Lake Cypress Springs Water Level Today - 376.22 ft, 91.5% Full

Cypress Creek · Texas - updated daily from official gauges

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

• Lake Cypress Springs is 91.5% full - high on this site's capacity scale - as of September 8, 2026. Surface elevation 376.22 feet, storage 61,115 acre-feet (capacity basis 66,756 acre-feet), per Texas Water Development Board data.
• That elevation is its lowest September reading since 2022, and 3.30 feet above its record low of 372.92 ft (November 5, 2006), in a daily record going back to July 2, 1998 (TWDB's period of record for this reservoir).
• Storage is 97% of the September 8 average across 29 years of record.
• Lake Cypress Springs is falling: elevation changed -0.15 ft over the past week, -0.72 ft over the past month, and -1.48 ft over the past year, per Texas Water Development Board data.

Lake Cypress Springs is holding near the top of its operating range at 91.5% of capacity, -1.48 ft over the past twelve months.

Lake Cypress Springs operating range

Lake Cypress Springs is operated within a narrow band rather than drawn down and refilled over years. As of September 8, 2026 it sits 1.78 feet below its 378.0 ft full-pool reference. Over the past two years the daily record ranges from 376.22 ft (September 8, 2026) to 380.04 ft (June 13, 2025) - a band of 3.82 feet. The highest reading in the full record is 383.85 ft on December 28, 2015.

Storage above the full-pool reference is flood control space, not supply. A reservoir reading at or near 100% of its conservation capacity is being operated normally - it is not a surplus, and the operator may release water to hold that space.

Lake Cypress Springs storage in context

Lake Cypress Springs water level, past 12 months

91.5% full at the latest reading - across the past 12 months it ranged from 91.5% (September 8, 2026) to 98.6% (September 8, 2025). Percent full is storage against the 66,756-acre-foot capacity basis, not a share of the elevation plotted above.

Lake Cypress Springs elevation, full record

91.5% full at the latest reading - across the storage record since July 2, 1998 it ranged from 76.9% (November 5, 2006) to 100.0% (July 19, 2025). Percent full is storage against the 66,756-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 Cypress Springs today?

As of September 8, 2026, Lake Cypress Springs's surface elevation is 376.22 feet, with 61,115 acre-feet in storage - 91.5% of the 66,756 acre-foot capacity basis. Source: Water Data for Texas (TWDB) daily data.

How full is Lake Cypress Springs?

Lake Cypress Springs is 91.5% full as of September 8, 2026. Its storage is 97% of the September 8 average across its record since 1998. Source: Water Data for Texas (TWDB) daily data.

When was Lake Cypress Springs last full?

Lake Cypress Springs was last at or above 95% of its 66,756 acre-foot capacity basis on August 8, 2026. As of September 8, 2026 it is 91.5% full. Source: Water Data for Texas (TWDB) daily data.

Is Lake Cypress Springs rising or falling?

Lake Cypress Springs is falling: its elevation changed -0.15 feet over the week ending September 8, 2026, -0.72 ft over the past month, and -1.48 feet over the past year. Source: Water Data for Texas (TWDB) daily data.

What was Lake Cypress Springs's lowest water level on record?

Lake Cypress Springs's lowest surface elevation in the daily record since July 2, 1998 was 372.92 feet on November 5, 2006, per the daily record used by this site. As of September 8, 2026 the reservoir is 3.30 feet above that record low.

About this gauge

Lake Cypress Springs is a Texas water-supply reservoir in the Cypress Creek basin. Water Data for Texas publishes a conservation pool elevation of 378.0 ft and a conservation capacity of 66,756 acre-feet, with daily water level and storage recorded since 1998-07-02.

Operator

Texas Water Development Board (Water Data for Texas)

Station

cypress-springs

Measurements

Daily water level and conservation storage

River

Cypress Creek

State

Texas

Full pool reference

378.0 ft

Capacity basis

66,756 acre-feet (Water Data for Texas (TWDB) conservation capacity)

Period of record

July 2, 1998 (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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