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 inflow into Lake Powell was 9946 cfs

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

Tue, Jun 19, 2018 3611.49 12,880,866 9946 14158 95.0 63.0 73.0

Mon, Dec 20, 1993 3660.20 18,518,784 9946 14300 50.0 29.0 --

Tue, Dec 14, 1993 3660.68 18,581,768 9946 14000 50.0 27.0 --

Thu, Dec 17, 1987 3686.02 22,149,002 9946 15500 38.0 26.0 --

Thu, Mar 11, 1982 3663.36 19,025,048 9946 9340 58.0 39.0 --

Thu, Nov 20, 1980 3683.50 21,930,476 9946 19500 n/a n/a --

Tue, Nov 19, 1974 3650.15 17,535,116 9946 11700 62.0 45.0 --

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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