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 7865 cfs

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

Sun, Sep 18, 2005 3602.20 11,961,197 7865 8196 84.0 59.0 74.0

Fri, Feb 25, 2000 3678.04 20,974,010 7865 11520 52.0 25.0 --

Thu, Aug 01, 1991 3635.39 15,465,838 7865 14900 96.0 75.0 --

Tue, Dec 01, 1981 3670.58 20,040,104 7865 12200 43.0 27.0 --

Sun, Dec 02, 1979 3673.22 20,471,698 7865 15500 46.0 26.0 --

Sun, Aug 11, 1974 3660.79 18,915,768 7865 13900 97.0 69.0 --

Sat, Aug 03, 1974 3662.12 19,093,260 7865 15500 93.0 69.0 --

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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