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 9509 cfs

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

Fri, Oct 05, 2007 3601.65 11,908,172 9509 9888 79.0 55.0 69.0

Sat, Oct 09, 2004 3571.01 9,188,960 9509 7291 81.0 51.1 70.0

Tue, May 04, 2004 3582.93 10,192,619 9509 10090 91.0 59.0 62.0

Mon, Oct 26, 1987 3687.47 22,366,966 9509 6300 68.0 46.0 --

Sun, Oct 11, 1981 3672.50 20,308,786 9509 3840 79.0 46.0 --

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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