Lake Powell, Houseboating, Glen Canyon, Striped Bass



Lake Powell

Lake Powell

For May 20th, 2018
Snowpack is 43% of avg
TotalPrecip is 72.00% of avg

Lake Powell is currently 478.35 feet deep at the dam
Water Summary
Today is day 233 of 365 for the Water Year 2018. We are 64% through the Water Year.
Last Reading: 3610.35 on May 20, 2018
Powell was last within 2" of this elevation on Apr 21, 2018
There are currently 4,159,676,945,540 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 89.65 feet below Full Pool (Elevation 3,700)

By content, Lake Powell is 52.49% of Full Pool (24,322,000 af)
Total inflows for water year 2018: 3,629,194 acre feet

This is 69.84% of the May 20th average of 5,196,270 acre feet
Total releases for water year 2018: 5,549,543 acre feet

This is 67.43% of the minimum required of 8,230,000 acre feet
During WY 2018, water storage has fallen by 1,909,974 AF and total outflows have exceeded total inflows by 1,920,349 AF
The 28 tracked reservoirs above Lake Powell are currently at 79.47% of capacity. Click for Details
Inflows for WY 2018 are 60.35% of WY 2017         Rivers feeding Lake Powell are running at 43.85% of the May 21st avg. Click for Details


Powell is down -2.52 feet from one year ago


View Acre Feet     Last 14 Measurements
Powell is up 0.96 feet over these measurements

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Sun, May 20, 2018
3610.35
0.17
12765563
18949
9146
84.0
64.0
n/a
Sat, May 19, 2018
3610.18
0.20
12748427
20594
9156
86.0
60.0
n/a
Fri, May 18, 2018
3609.98
0.15
12728287
21007
12318
82.0
55.0
n/a
Thu, May 17, 2018
3609.83
0.12
12713196
19416
12376
88.0
59.0
n/a
Wed, May 16, 2018
3609.71
0.10
12701131
18600
12659
88.0
60.0
64.0
Tue, May 15, 2018
3609.61
0.12
12691083
19565
12534
84.0
57.0
63.0
Mon, May 14, 2018
3609.49
0.09
12679033
17826
12438
82.0
55.0
62.0
Sun, May 13, 2018
3609.40
0.09
12670000
14361
8976
72.0
53.0
62.0
Sat, May 12, 2018
3609.31
0.01
12660971
9988
8973
74.0
64.0
63.0
Fri, May 11, 2018
3609.30
-0.05
12659969
10159
12421
84.0
72.0
63.0
Thu, May 10, 2018
3609.35
0.00
12664984
12773
12304
91.0
66.0
63.0
Wed, May 09, 2018
3609.35
-0.05
12664984
10178
12440
95.0
66.0
64.0
Tue, May 08, 2018
3609.40
0.01
12670000
13490
12474
95.0
60.0
63.0
Mon, May 07, 2018
3609.39
0.02
12668997
13957
12395
91.0
63.0
62.0
Averages of List
3609.62
0.07
12691901.79
15775.93
11472.14
85.43
61.00
62.9

Averages for May 21st

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Since Filled
3642.16
0.31
16690717.27
33304.89
14677.08
84.05
56.18
65.1
All-Time
3625.65
0.37
15310763.04
32811.93
14014.55
84.28
56.45
65.1

Last 10 May 21st's data records

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Sun, May 21, 2017
3613.53
0.66
13088907
46438
9175
82.0
53.0
62.0
Sat, May 21, 2016
3597.78
0.57
11539513
40640
10983
80.1
62.1
63.0
Thu, May 21, 2015
3593.28
0.29
11120048
26746
11793
80.0
54.0
63.0
Wed, May 21, 2014
3583.36
0.19
10230119
17617
8203
82.0
54.0
62.0
Tue, May 21, 2013
3597.24
0.30
11488658
26641
10861
82.9
55.0
64.0
Mon, May 21, 2012
3635.95
-0.03
15529918
8666
9988
95.0
62.1
69.0
Sat, May 21, 2011
3618.06
0.52
13558725
45192
22376
77.0
51.1
60.0
Fri, May 21, 2010
3622.51
0.20
14031027
21174
9884
89.1
62.1
62.0
Thu, May 21, 2009
3621.50
0.70
13922811
47766
9452
81.0
61.0
68.0
Wed, May 21, 2008
3602.36
0.52
11976667
37823
13201
81.0
51.1
65.0
Averages of List
3608.56
0.39
12648639.30
31870.30
11591.60
83.01
56.55
63.8


Accessibility of Primitive Launches and Other Sites
As of Sunday, May 20th, 2018 where elevation was 3610.35'

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
30.35 Above
Open and Usable
Antelope Point
3592.00
3590.00
20.35 Above
Open and Usable
Hite Marina
3650.00
3645.00
34.65 Below
Unusable, go to main marinas
Farley Canyon
3653.00
3649.00
38.65 Below
Unusable, go to main marinas
Copper Canyon
3663.00
3660.00
49.65 Below
Unusable, go to main marinas
Bullfrog to Halls Creek Cut-Off
3670.00
3668.00
57.65 Below
Unusable, use Main Channel
Piute Farms
3682.00
3680.00
69.65 Below
Unusable, go to main marinas
Gunsite Pass Cut-Off
3685.00
3680.00
69.65 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