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 9074 cfs

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

Wed, Apr 21, 1999 3677.20 20,853,128 9074 12080 83.0 57.0 --

Sun, Aug 21, 1977 3644.53 16,755,570 9074 15600 99.0 69.0 --

Wed, Nov 24, 1976 3658.69 18,579,920 9074 15200 57.0 33.0 --

Thu, Nov 13, 1975 3666.87 19,708,198 9074 15400 54.0 28.0 --

Tue, Aug 13, 1974 3660.45 18,870,422 9074 15700 95.0 65.0 --

Wed, Aug 05, 1970 3600.52 12,086,751 9074 11900 100.0 75.0 --

Thu, Oct 24, 1968 3544.09 7,375,245 9074 12400 74.0 47.0 --

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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