Mackenzie Reservoir Water Level Today - 3,018.82 ft, 11.0% Full

Red River · Texas - updated daily from official gauges

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

• Mackenzie Reservoir is 11.0% full - critically low on this site's capacity scale - as of September 8, 2026. Surface elevation 3,018.82 feet, storage 5,097 acre-feet (capacity basis 46,450 acre-feet), per Texas Water Development Board data.
• That elevation is 17.73 feet above its record low of 3,001.09 ft (May 21, 2014), in a daily record going back to April 17, 1999 (TWDB's period of record for this reservoir).
• Storage is 86% of the September 8 average across 26 years of record.
• Mackenzie Reservoir is falling: elevation changed -0.12 ft over the past week, -0.74 ft over the past month, and -4.71 ft over the past year, per Texas Water Development Board data.

Mackenzie Reservoir has fallen 4.71 feet in twelve months, and now sits 17.73 feet above its record low.

Mackenzie Reservoir vs its record low

In the daily record used by this site (going back to April 17, 1999 (TWDB's period of record for this reservoir)), Mackenzie Reservoir's lowest surface elevation was 3,001.09 feet on May 21, 2014, when storage was 2,206 acre-feet. As of September 8, 2026, Mackenzie Reservoir is at 3,018.82 feet - 17.73 feet above that record. The record high in the same series was 3,035.96 ft on May 31, 1999.

Mackenzie Reservoir storage in context

Mackenzie Reservoir water level, past 12 months

11.0% full at the latest reading - across the past 12 months it ranged from 11.0% (September 8, 2026) to 13.4% (September 8, 2025). Percent full is storage against the 46,450-acre-foot capacity basis, not a share of the elevation plotted above.

Mackenzie Reservoir elevation, full record

11.0% full at the latest reading - across the storage record since April 17, 1999 it ranged from 4.7% (May 21, 2014) to 21.5% (May 31, 1999). Percent full is storage against the 46,450-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 Mackenzie Reservoir today?

As of September 8, 2026, Mackenzie Reservoir's surface elevation is 3,018.82 feet, with 5,097 acre-feet in storage - 11.0% of the 46,450 acre-foot capacity basis. Source: Water Data for Texas (TWDB) daily data.

How full is Mackenzie Reservoir?

Mackenzie Reservoir is 11.0% full as of September 8, 2026. Its storage is 86% of the September 8 average across its record since 1999. Source: Water Data for Texas (TWDB) daily data.

Is Mackenzie Reservoir rising or falling?

Mackenzie Reservoir is falling: its elevation changed -0.12 feet over the week ending September 8, 2026, -0.74 ft over the past month, and -4.71 feet over the past year. Source: Water Data for Texas (TWDB) daily data.

What was Mackenzie Reservoir's lowest water level on record?

Mackenzie Reservoir's lowest surface elevation in the daily record since April 17, 1999 was 3,001.09 feet on May 21, 2014, per the daily record used by this site. As of September 8, 2026 the reservoir is 17.73 feet above that record low.

About this gauge

Mackenzie Reservoir is a Texas water-supply reservoir in the Red River basin. Water Data for Texas publishes a conservation pool elevation of 3,100.0 ft and a conservation capacity of 46,450 acre-feet, with daily water level and storage recorded since 1999-04-17.

Operator

Texas Water Development Board (Water Data for Texas)

Station

mackenzie

Measurements

Daily water level and conservation storage

River

Red River

State

Texas

Full pool reference

3,100.0 ft

Capacity basis

46,450 acre-feet (Water Data for Texas (TWDB) conservation capacity)

Period of record

April 17, 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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