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 5189 cfs

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

Mon, Nov 22, 2021 3542.60 7,067,404 5189 8198 55.0 33.0 58.0

Fri, Jul 20, 2018 3606.01 12,332,870 5189 15077 100.0 75.0 79.0

Sat, Aug 27, 1994 3657.52 18,169,944 5189 12400 100.0 76.0 --

Mon, Aug 03, 1981 3677.29 20,990,066 5189 16700 98.0 69.0 --

Mon, Oct 16, 1978 3638.75 16,034,333 5189 10500 81.0 51.0 --

Wed, Aug 31, 1966 3534.00 6,702,191 5189 11000 89.0 59.0 --

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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