Lake Powell, Houseboating, Glen Canyon, Striped Bass



Lake Powell

Lake Powell

For September 21st, 2018
Snowpack is 34% of avg
TotalPrecip is 66.00% of avg

Lake Powell is currently 461.96 feet deep at the dam
Water Summary
Today is day 356 of 365 for the Water Year 2018. We are 98% through the Water Year.
Last Reading: 3593.96 on Sep 20, 2018
Powell was last within 2" of this elevation on Mar 18, 2017
There are currently 3,643,932,337,775 gallons of water in Lake Powell!
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Printable Version
Gas Prices on Lake
Detailed Map of Powell
15 Day Weather Forecast
SW Satellite Weather
SW Water Vapor


Elevation & Content Water Inflow Data Glen Canyon Dam Release Data
Lake Powell is 106.04 feet below Full Pool (Elevation 3,700)

By content, Lake Powell is 45.98% of Full Pool (24,322,000 af)
Total inflows for water year 2018: 5,312,920 acre feet

This is 50.51% of the September 20th average of 10,518,184 acre feet
Total releases for water year 2018: 8,764,785 acre feet

This is 106.5% of the minimum required of 8,230,000 acre feet
During WY 2018, water storage has fallen by 3,492,734 AF and total outflows have exceeded total inflows by 3,451,865 AF
The 28 tracked reservoirs above Lake Powell are currently at 69.81% of capacity. Click for Details
Inflows for WY 2018 are 47.08% of WY 2017         Rivers feeding Lake Powell are running at 56.65% of the Sep 21st avg. Click for Details


Powell is down -35.12 feet from one year ago


View Acre Feet     Last 14 Measurements
Powell is down -2.13 feet over these measurements

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Thu, Sep 20, 2018
3593.96
-0.18
11182803
3365
11681
n/a
n/a
n/a
Wed, Sep 19, 2018
3594.14
-0.32
11199452
4828
11639
n/a
n/a
n/a
Tue, Sep 18, 2018
3594.29
0.15
11213338
3809
11635
n/a
n/a
n/a
Mon, Sep 17, 2018
3594.46
-0.16
11229089
4523
11851
n/a
n/a
n/a
Sun, Sep 16, 2018
3594.62
-0.48
11243926
3660
9982
n/a
n/a
n/a
Sat, Sep 15, 2018
3594.76
0.14
11256919
3353
11198
n/a
n/a
n/a
Fri, Sep 14, 2018
3594.93
0.31
11272709
3866
11718
n/a
n/a
n/a
Thu, Sep 13, 2018
3595.10
-0.17
11288513
3918
11776
n/a
n/a
n/a
Wed, Sep 12, 2018
3595.27
-0.19
11304331
2838
11719
n/a
n/a
n/a
Tue, Sep 11, 2018
3595.46
-0.16
11322027
4415
11779
n/a
n/a
n/a
Mon, Sep 10, 2018
3595.62
-0.17
11336942
3836
11715
0.0
0.0
76.0
Sun, Sep 09, 2018
3595.79
-0.45
11352803
4662
10004
0.0
0.0
77.0
Sat, Sep 08, 2018
3595.91
0.12
11364007
2653
11053
0.0
0.0
76.0
Fri, Sep 07, 2018
3596.09
0.30
11380827
4849
11727
0.0
0.0
76.0
Averages of List
3595.85
-0.05
11358644.75
4000.00
11124.75
0.00
0.00
76.2

Averages for September 21st

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Since Filled
3649.57
-0.08
17606940.00
9597.18
13549.03
85.17
58.91
73.9
All-Time
3635.11
-0.07
15932598.82
9319.64
12825.15
84.37
58.41
73.9

Last 10 September 21st's data records

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Thu, Sep 21, 2017
3629.00
-0.08
14741149
7669
11572
82.0
64.0
74.0
Wed, Sep 21, 2016
3611.12
-0.14
12843368
5171
12050
73.0
60.0
73.0
Mon, Sep 21, 2015
3606.98
-0.11
12428717
7222
12339
86.0
63.0
78.0
Sun, Sep 21, 2014
3605.66
0.07
12298408
13703
9144
82.9
66.0
77.0
Sat, Sep 21, 2013
3591.20
0.00
10929487
10084
9349
89.1
63.0
67.0
Fri, Sep 21, 2012
3622.19
-0.08
13996673
4345
8113
90.0
63.0
74.0
Wed, Sep 21, 2011
3653.82
-0.03
17695904
14328
15349
89.6
63.0
74.0
Tue, Sep 21, 2010
3633.71
-0.05
15272498
6751
8118
91.9
62.1
73.0
Mon, Sep 21, 2009
3635.94
-0.06
15528762
8593
10058
82.9
62.1
76.0
Sun, Sep 21, 2008
3627.71
-0.10
14597967
9040
12158
86.0
62.1
75.0
Averages of List
3621.73
-0.06
14033293.30
8690.60
10825.00
85.34
62.83
74.1


Accessibility of Primitive Launches and Other Sites
As of Thursday, September 20th, 2018 where elevation was 3593.96'

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
13.96 Above
Open and Usable
Antelope Point
3592.00
3590.00
3.96 Above
Open and Usable
Hite Marina
3650.00
3645.00
51.04 Below
Unusable, go to main marinas
Farley Canyon
3653.00
3649.00
55.04 Below
Unusable, go to main marinas
Copper Canyon
3663.00
3660.00
66.04 Below
Unusable, go to main marinas
Bullfrog to Halls Creek Cut-Off
3670.00
3668.00
74.04 Below
Unusable, use Main Channel
Piute Farms
3682.00
3680.00
86.04 Below
Unusable, go to main marinas
Gunsite Pass Cut-Off
3685.00
3680.00
86.04 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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1999 - 2018



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Lake Powell, Houseboating, Glen Canyon, Striped Bass