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 8975 cfs

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

Sat, Oct 11, 2014 3606.09 12,340,756 8975 8966 82.9 59.0 72.0

Mon, Aug 16, 2010 3636.01 15,536,855 8975 13390 93.0 75.0 80.0

Thu, Mar 24, 2005 3556.57 8,065,026 8975 14098 54.0 37.0 52.0

Wed, Nov 06, 1991 3627.03 14,523,303 8975 10000 70.0 40.0 --

Tue, Aug 11, 1964 3488.34 4,041,345 8975 1020 98.0 77.0 --

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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