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 12143 cfs

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

Mon, Mar 21, 2011 3612.21 12,954,041 12143 18171 55.9 35.6 50.0

Mon, Jul 22, 1996 3687.37 22,352,046 12143 15200 107.0 76.0 --

Sun, Mar 06, 1988 3681.87 21,531,908 12143 6790 69.0 37.0 --

Mon, Mar 11, 1974 3649.21 17,416,524 12143 9840 57.0 39.0 --

Fri, Mar 09, 1973 3601.51 12,126,121 12143 10600 53.0 39.0 --

Sat, Nov 28, 1970 3600.76 12,110,304 12143 7360 55.0 34.0 --

Tue, Nov 10, 1970 3600.46 12,080,856 12143 7030 60.0 41.0 --

Sun, Nov 07, 1965 3531.44 6,542,842 12143 9310 69.0 44.0 --

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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