Lake Powell Water Database

powell
powell

The earliest data is from Monday, March 11th, 1963
The most recent data is from Wednesday, October 1st, 2025

Days where outflow from Lake Powell was 8400 cfs

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

Mon, Jan 30, 2023 3523.56 5,462,412 7215 8400 44.2 31.1 43.0

Sat, Nov 20, 2021 3542.79 7,080,397 6879 8400 62.0 42.0 60.0

Sat, May 28, 1994 3660.11 18,507,014 29840 8400 88.0 59.0 --

Wed, Oct 10, 1990 3637.34 15,691,450 6862 8400 69.0 45.0 --

Mon, Oct 31, 1988 3684.19 21,875,302 6098 8400 73.0 47.0 --

Mon, Sep 05, 1988 3687.83 22,421,342 8665 8400 94.0 56.0 --

Wed, Oct 21, 1987 3687.36 22,350,376 9250 8400 73.0 45.0 --

Sun, Oct 18, 1981 3672.69 20,335,640 13702 8400 67.0 45.0 --

Thu, Apr 30, 1981 3677.25 20,984,286 9438 8400 89.0 59.0 --

Sat, Nov 17, 1979 3674.64 20,672,802 8245 8400 58.0 35.0 --

Tue, Jun 21, 1977 3654.99 18,069,782 5924 8400 92.0 67.0 --

Mon, Jan 18, 1971 3599.18 11,937,120 11249 8400 58.0 30.0 --

Sun, Mar 27, 1966 3536.46 6,868,343 13160 8400 70.0 39.0 --

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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