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 9685 cfs

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

Fri, Sep 09, 2016 3612.66 12,999,915 9685 12170 95.0 66.0 75.0

Sun, Apr 18, 1999 3677.29 20,866,066 9685 10448 72.0 56.0 --

Sat, Dec 26, 1987 3685.54 22,077,006 9685 11500 36.0 22.0 --

Sat, Dec 18, 1976 3656.49 18,291,980 9685 13500 47.0 23.0 --

Sun, Dec 17, 1972 3607.50 12,742,976 9685 11000 38.0 21.0 --

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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