Lake Powell Water Database

Lake Powell, Houseboating, Glen Canyon, Striped Bass

Lake Powell

Lake Powell

For July 21st, 2018
Snowpack is 48% of avg
TotalPrecip is 71.00% of avg

Lake Powell is currently 474.01 feet deep at the dam

Water Summary Today is day 294 of 365 for the Water Year 2018. We are 81% through the Water Year.
Last Reading: 3606.01 on Jul 20, 2018
Powell was last within 2" of this elevation on Nov 29, 2016 There are currently 4,018,683,313,171 gallons of water in Lake Powell!

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15 Day Weather Forecast
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Elevation & Content	Water Inflow Data	Glen Canyon Dam Release Data
Lake Powell is 93.99 feet below Full Pool (Elevation 3,700) By content, Lake Powell is 50.71% of Full Pool (24,322,000 af)	Total inflows for water year 2018: 4,821,030 acre feet This is 52.16% of the July 20th average of 9,243,137 acre feet	Total releases for water year 2018: 7,118,867 acre feet This is 86.5% of the minimum required of 8,230,000 acre feet
During WY 2018, water storage has fallen by 2,342,667 AF and total outflows have exceeded total inflows by 2,297,837 AF
The 28 tracked reservoirs above Lake Powell are currently at 77.95% of capacity. Click for Details
Inflows for WY 2018 are 46.75% of WY 2017 Rivers feeding Lake Powell are running at 42.42% of the Jul 21st avg. Click for Details

View Acre Feet Last 14 Measurements
Powell is down -2.63 feet over these measurements

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP

Fri, Jul 20, 2018 3606.01 -0.20 12332870 5189 15077 n/a n/a n/a

Thu, Jul 19, 2018 3606.21 -0.22 12352592 4303 15277 n/a n/a n/a

Wed, Jul 18, 2018 3606.43 -0.22 12374310 4312 15298 n/a n/a n/a

Tue, Jul 17, 2018 3606.65 -0.27 12396053 1542 15238 n/a n/a n/a

Mon, Jul 16, 2018 3606.92 -0.13 12422774 9227 15383 0.0 0.0 79.0

Sun, Jul 15, 2018 3607.05 -0.17 12435652 2978 11299 0.0 0.0 79.0

Sat, Jul 14, 2018 3607.22 -0.12 12452508 5689 11314 0.0 0.0 79.0

Fri, Jul 13, 2018 3607.34 -0.24 12464414 3282 15403 0.0 0.0 79.0

Thu, Jul 12, 2018 3607.58 -0.22 12488251 4176 15228 0.0 0.0 78.0

Wed, Jul 11, 2018 3607.80 -0.15 12510128 8060 15329 0.0 0.0 79.0

Tue, Jul 10, 2018 3607.95 -0.29 12525059 460 15333 0.0 0.0 78.0

Mon, Jul 09, 2018 3608.24 -0.15 12553958 8107 15392 0.0 0.0 78.0

Sun, Jul 08, 2018 3608.39 -0.25 12568924 -1544 11187 0.0 0.0 78.0

Sat, Jul 07, 2018 3608.64 -0.11 12593893 6122 11244 0.0 0.0 77.0

Averages of List 3607.71 -0.18 12501556.10 4655.70 13711.20 0.00 0.00 78.4

Averages for July 21st

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP

Since Filled 3656.28 -0.08 18458754.63 15389.71 17330.63 97.91 70.89 79.5

All-Time 3641.30 -0.04 16686417.00 15572.16 15782.44 98.04 71.86 79.5

Last 10 July 21st's data records

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP

Fri, Jul 21, 2017 3635.37 -0.04 15462973 12705 14175 97.0 75.0 80.0

Thu, Jul 21, 2016 3619.95 -0.12 13757939 10062 16050 98.0 73.0 78.0

Tue, Jul 21, 2015 3614.04 -0.03 13141260 16605 17385 90.0 64.0 77.0

Mon, Jul 21, 2014 3609.17 -0.06 12646935 10977 13383 n/a n/a 78.0

Sun, Jul 21, 2013 3596.17 -0.10 11388307 8372 12672 97.0 78.1 80.0

Sat, Jul 21, 2012 3630.08 -0.20 14861799 3101 14305 97.0 75.2 79.0

Thu, Jul 21, 2011 3659.92 0.21 18482124 51349 24192 n/a n/a n/a

Wed, Jul 21, 2010 3637.53 -0.13 15713321 8296 13394 95.0 75.9 83.0

Tue, Jul 21, 2009 3641.97 -0.08 16236878 13303 13652 88.0 71.1 n/a

Mon, Jul 21, 2008 3633.56 -0.02 15255369 15546 14703 89.1 66.9 80.0

Averages of List 3627.78 -0.06 14694690.50 15031.60 15391.10 93.89 72.40 79.3

Accessibility of Primitive Launches and Other Sites
As of Friday, July 20th, 2018 where elevation was 3606.01'

SITE/LAUNCH NAME MINIMUM SAFE
ELEVATION ABSOLUTE MINIMUM
USABLE ELEVATION CURRENT LEVEL VS.
ABSOLUTE MINIMUM CURRENT ACCESSIBILITY

Castle Rock Cut-Off 3583.00 3580.00 26.01 Above Open and Usable

Antelope Point 3592.00 3590.00 16.01 Above Open and Usable

Hite Marina 3650.00 3645.00 38.99 Below Unusable, go to main marinas

Farley Canyon 3653.00 3649.00 42.99 Below Unusable, go to main marinas

Copper Canyon 3663.00 3660.00 53.99 Below Unusable, go to main marinas

Bullfrog to Halls Creek Cut-Off 3670.00 3668.00 61.99 Below Unusable, use Main Channel

Piute Farms 3682.00 3680.00 73.99 Below Unusable, go to main marinas

Gunsite Pass Cut-Off 3685.00 3680.00 73.99 Below Unusable, use Main Channel

Blue Notch is unknown and really just shoreline launching at whatever point feels good. No minimum given except amount of courage it takes to reach this launch.

Search DB For More Water Data Facts

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 - Average Cubic Feet / Second over entire 24 hour period
Outflow - Average Cubic Feet / Second over entire 24 hour period
All Temps - Degrees Farhenheit
The Water Year runs from October 1 to September 30 of the next year
Acre Feet = 1.9835 * Flow CFS
TP = Total Precipitation

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Copyright Summit Technologies, Inc.
Water data courtesy of US Bureau of Reclamation
*Water temp data is provided by Wayne Gustaveson
as measured in the a.m. at the Wahweap docks
*Air temp data is sourced from (Prev 24 Hr Extremes):
Page, AZ Weather
All data is provisional and subject to review and modification
Call 1-800-752-8525 for up-to-date water level infomation
or go to Lake Powell Source Data
USBR Projected Outlook
Current Snowpack Conditions for Upper Colorado Basin

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Lake Powell, Houseboating, Glen Canyon, Striped Bass