Lake Powell Water Database

powell
powell

The earliest data is from Monday, March 11th, 1963
The most recent data is from Tuesday, September 30th, 2025

Days where inflow into Lake Powell was 7542 cfs

DATE MEASURED ELEVATION CONTENT INFLOW OUTFLOW HIGH TEMP LOW TEMP WATER TEMP

Tue, May 18, 2021 3560.39 8,352,724 7542 10958 86.0 58.0 66.0

Thu, Mar 19, 2020 3601.29 11,873,563 7542 12015 51.0 42.0 52.0

Tue, Oct 15, 2019 3614.12 13,149,485 7542 10324 76.0 50.0 65.0

Sat, Feb 05, 2005 3561.29 8,421,476 7542 13576 51.1 28.9 --

Sat, Apr 26, 2003 3605.27 12,260,086 7542 10483 78.1 54.0 55.0

Thu, Sep 23, 1976 3664.64 19,374,312 7542 16300 76.0 65.0 --

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Measurements are taken at 11:59 pm of the date listed
Temperature data is from Wahweap, AZ
Water temperature data is from wayneswords.com*
CHANGE represents water elevation change from previous day

Units used in each measurement:
Elevation - Feet above sea level
Change - Feet difference over previous measurement
Content - Acre Feet
Inflow - Acre Feet per day
Outflow - Acre Feet per day
All Temps - Degrees Farhenheit
The Water Year runs from October 1 to September 30 of the next year
Acre Feet = * Flow CFS
TP = Total Precipitation

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Water data courtesy of US Bureau of Reclamation
*Air temp data is sourced from (Prev 24 Hr Extremes): Weather
Weather forecast for
All data is provisional and subject to review and modification
USBR Source Data