Lake Powell, Houseboating, Glen Canyon, Striped Bass

Lake Powell





Lake Powell

For May 11th, 2021
Snowpack is 52% of avg
TotalPrecip is 72.00% of avg

Lake Powell is currently 429.13 feet deep at the dam
Water Summary
Today is day 223 of 365 for the Water Year 2021. We are 61% through the Water Year.
Last Reading: 3561.13 on May 10, 2021
Powell was last within 2" of this elevation on May 9, 2021
There are currently 2,740,157,331,330 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 138.87 feet below Full Pool (Elevation 3,700)

By content, Lake Powell is 34.57% of Full Pool (24,322,000 af)
Total inflows for water year 2021: 1,922,763 acre feet

This is 42.24% of the May 10th average of 4,552,433 acre feet
Total releases for water year 2021: 5,006,493 acre feet

This is 66.75% of the minimum required of 7,500,000 acre feet
During WY 2021, water storage has fallen by 2,947,314 AF and total outflows have exceeded total inflows by 3,083,730 AF
The 28 tracked reservoirs above Lake Powell are currently at 70.87% of capacity. Click for Details
Inflows for WY 2021 are 55.54% of WY 2020         Rivers feeding Lake Powell are running at 21.93% of the May 11th avg. Click for Details

Lake Powell is down -39.48 feet from one year ago.    Lake Powell is at low for water year and down 34.70 feet from the high.

View Acre Feet     Last 14 Measurements
Lake Powell is down -1.73 feet over these measurements

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Mon, May 10, 2021
3561.13
-0.14
8409223
5547
11063
80.0
55.0
n/a
Sun, May 09, 2021
3561.27
-0.10
8419941
4777
8628
79.0
53.0
n/a
Sat, May 08, 2021
3561.37
-0.06
8427603
7358
9542
83.0
63.0
n/a
Fri, May 07, 2021
3561.43
-0.09
8432203
8239
11677
89.0
62.0
61.0
Thu, May 06, 2021
3561.52
-0.15
8439106
5425
11373
91.0
59.0
61.0
Wed, May 05, 2021
3561.67
-0.12
8450619
7112
11809
87.0
59.0
60.0
Tue, May 04, 2021
3561.79
-0.16
8459837
5343
11720
82.0
54.0
60.0
Mon, May 03, 2021
3561.95
-0.17
8472139
4353
11155
75.0
57.0
59.0
Sun, May 02, 2021
3562.12
-0.14
8485223
2671
8221
81.0
57.0
59.0
Sat, May 01, 2021
3562.26
-0.11
8496009
4547
8842
88.0
61.0
59.0
Fri, Apr 30, 2021
3562.37
-0.15
8504490
4590
10607
86.0
57.0
59.0
Thu, Apr 29, 2021
3562.52
-0.15
8516065
4609
10632
81.0
54.0
58.0
Wed, Apr 28, 2021
3562.67
-0.19
8527651
2798
10511
73.0
46.0
58.0
Tue, Apr 27, 2021
3562.86
-0.12
8542341
5680
10451
58.0
44.0
58.0
Averages of List
3561.92
-0.13
8470175
5218
10445
80.9
55.8
59.3

Averages for May 11th

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Since Filled
3636.12
0.21
15996677
25568
13974
80.9
52.5
61.0
All-Time
3621.26
0.21
14802346
25217
13592
81.2
52.5
61.0

Last 10 May 11th's data records

DATE MEASURED ELEVATION CHG vs TODAY CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Mon, May 11, 2020
3600.81
39.68
11827511
21339
10470
80.0
64.0
64.0
Sat, May 11, 2019
3576.41
15.28
9635111
28968
10800
73.0
52.0
63.0
Fri, May 11, 2018
3609.30
48.17
12659969
10159
12421
84.0
72.0
63.0
Thu, May 11, 2017
3607.42
46.29
12472357
38024
10564
82.0
50.0
62.0
Wed, May 11, 2016
3593.31
32.18
11122812
21739
11794
73.9
52.0
61.0
Mon, May 11, 2015
3590.60
29.47
10874909
22525
11737
75.0
50.0
61.0
Sun, May 11, 2014
3580.37
19.24
9971265
25496
7374
59.0
44.1
57.0
Sat, May 11, 2013
3596.10
34.97
11381762
10453
9519
81.0
55.9
63.0
Fri, May 11, 2012
3635.89
74.76
15522983
10777
10210
87.1
63.0
64.0
Wed, May 11, 2011
3613.82
52.69
13118659
31372
14791
84.9
n/a
60.0
Averages of List
3600.40
0.23
11858734
22085
10968
78.0
55.9
61.8


Accessibility of Primitive Launches and Other Sites
As of Monday, May 10th, 2021 where elevation was 3561.13'

SITE/LAUNCH NAME MINIMUM SAFE
ELEVATION
ABSOLUTE MINIMUM
USABLE ELEVATION
CURRENT LEVEL VS.
ABSOLUTE MINIMUM
CURRENT ACCESSIBILITY
Halls Crossing Launch
3550.00
3548.00
13.13 Above
Open and Usable
Wahweap
3558.00
3556.00
5.13 Above
Open and Usable
Bullfrog (Main Launch)
3578.00
3576.00
14.87 Below
Unusable, go to main marinas
Castle Rock Cut-Off
3583.00
3580.00
18.87 Below
Unusable, use Main Channel
Antelope Point
3588.00
3587.00
25.87 Below
Unusable, go to main marinas
Dominguez Butte Cut-Off
3602.00
3600.00
38.87 Below
Unusable, go to main marinas
Gunsight to Padre Bay Cut-Off
3613.00
3609.00
47.87 Below
Unusable, go to main marinas
Hite Marina
3650.00
3645.00
83.87 Below
Unusable, go to main marinas
Farley Canyon
3653.00
3649.00
87.87 Below
Unusable, go to main marinas
Copper Canyon
3663.00
3660.00
98.87 Below
Unusable, go to main marinas
Bullfrog to Halls Creek Cut-Off
3670.00
3668.00
106.87 Below
Unusable, use Main Channel
Piute Farms
3682.00
3680.00
118.87 Below
Unusable, go to main marinas
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



Page took 1.522 seconds to create!
Copyright Summit Technologies, Inc.
Water data courtesy of US Bureau of Reclamation
The water year runs from Oct 1 - Sept 30
Since Filled is from 06/22/1980 forward
*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


Copyright Summit Technologies, Inc.
1999 - 2021



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Lake Powell, Houseboating, Glen Canyon, Striped Bass