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 7778 cfs

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

Sun, Aug 27, 2023 3575.37 8,929,265 7778 10549 96.8 66.2 81.0

Fri, Oct 31, 2008 3623.82 14,172,307 7778 12150 73.9 51.1 --

Fri, Dec 15, 1978 3633.55 15,426,773 7778 17100 32.0 26.0 --

Fri, Dec 11, 1964 3491.58 4,208,164 7778 6580 53.0 29.0 --

Thu, Dec 10, 1964 3491.67 4,212,836 7778 6130 44.0 33.0 --

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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