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 outflow from Lake Powell was 9770 cfs

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

Sat, Mar 07, 2009 3611.70 12,902,180 8138 9770 52.0 35.1 50.0

Thu, Oct 11, 2007 3601.52 11,895,674 9335 9770 77.0 50.0 67.0

Thu, Mar 26, 1992 3619.28 13,687,043 7872 9770 68.0 46.0 --

Wed, Apr 12, 1989 3674.65 20,489,286 11561 9770 78.0 50.0 --

Sat, Dec 08, 1979 3672.88 20,423,710 10229 9770 54.0 32.0 --

Wed, Mar 08, 1978 3622.32 14,169,327 10740 9770 60.0 37.0 --

Thu, Jun 30, 1977 3653.65 17,897,484 4741 9770 101.0 74.0 --

Fri, Oct 08, 1965 3530.92 6,508,228 14642 9770 84.0 51.0 --

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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