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 9397 cfs

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

Mon, Aug 23, 2021 3550.61 7,628,936 9397 14320 95.0 72.0 83.0

Thu, Jul 05, 2007 3611.11 12,842,366 9397 13484 100.9 77.0 81.0

Fri, Mar 11, 1994 3655.04 17,851,242 9397 10300 64.0 40.0 --

Thu, Mar 03, 1994 3654.99 17,844,850 9397 10300 66.0 36.0 --

Wed, Sep 22, 1993 3663.02 18,891,276 9397 11900 89.0 58.0 --

Sat, Feb 15, 1992 3620.60 13,826,910 9397 11000 55.0 34.0 --

Sun, Sep 08, 1985 3688.68 22,551,030 9397 23200 84.0 57.0 --

Wed, Dec 18, 1968 3540.59 7,129,549 9397 11000 41.0 27.0 --

Sun, Sep 01, 1968 3548.65 7,703,627 9397 10400 96.0 63.0 --

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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