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 7577.00 cfs

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

Mon, Aug 02, 2021 3553.62 7,847,226 7577 14182 95.0 71.0 79.0

Tue, Dec 22, 2015 3602.22 11,963,133 7577 14528 50.0 39.9 52.0

Mon, Dec 17, 2007 3596.80 11,447,330 7577 13447 41.0 25.0 53.0

Mon, Mar 24, 2003 3607.98 12,528,044 7577 12804 69.1 51.1 52.0

Thu, Feb 21, 1991 3629.33 14,778,304 7577 13400 59.0 30.0 --

Thu, Oct 08, 1964 3491.63 4,210,754 7577 3940 93.0 54.0 --

Thu, Apr 23, 1964 3401.00 732,000 7577 10800 83.0 41.0 --

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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