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 7435 cfs

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

Sun, Feb 05, 2017 3595.25 11,302,469 7435 11345 57.0 37.0 48.0

Sat, Dec 05, 2009 3630.37 14,894,316 7435 12976 41.0 27.0 56.0

Sun, Sep 29, 1991 3628.68 14,705,812 7435 9980 85.0 61.0 --

Sat, Sep 22, 1990 3638.23 15,795,023 7435 14400 80.0 57.0 --

Mon, Mar 28, 1977 3651.34 17,603,458 7435 10500 70.0 33.0 --

Fri, Oct 11, 1974 3651.23 17,671,944 7435 9470 78.0 57.0 --

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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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Copyright Summit Technologies, Inc.
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