Lake Powell, Houseboating, Glen Canyon, Striped Bass

Lake Powell





Lake Powell

For September 21st, 2020
Snowpack is 101% of avg
TotalPrecip is 76.00% of avg

Lake Powell is currently 465.27 feet deep at the dam
Water Summary
Today is day 357 of 366 for the Water Year 2020. We are 98% through the Water Year.
Last Reading: 3597.27 on Sep 20, 2020
Powell was last within 2" of this elevation on Sep 19, 2020
There are currently 3,744,515,179,325 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 102.73 feet below Full Pool (Elevation 3,700)

By content, Lake Powell is 47.25% of Full Pool (24,322,000 af)
Total inflows for water year 2020: 6,409,333 acre feet

This is 61.14% of the September 20th average of 10,482,519 acre feet
Total releases for water year 2020: 7,993,797 acre feet

This is 106.58% of the minimum required of 7,500,000 acre feet
During WY 2020, water storage has fallen by 1,772,470 AF and total outflows have exceeded total inflows by 1,584,464 AF
The 28 tracked reservoirs above Lake Powell are currently at 73.84% of capacity. Click for Details
Inflows for WY 2020 are 55.67% of WY 2019         Rivers feeding Lake Powell are running at 59.60% of the Sep 21st avg. Click for Details

Lake Powell is down -19.10 feet from one year ago.    Lake Powell is at low for water year and down 17.96 feet from the high.

View Acre Feet     Last 14 Measurements
Lake Powell is down -1.53 feet over these measurements

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Sun, Sep 20, 2020
3597.27
-0.08
11491480
5534
8867
93.0
67.0
72.0
Sat, Sep 19, 2020
3597.35
-0.13
11499006
4364
10262
92.0
72.0
72.0
Fri, Sep 18, 2020
3597.48
-0.13
11511243
4645
10546
92.0
63.0
73.0
Thu, Sep 17, 2020
3597.61
-0.11
11523488
5307
10185
92.0
61.0
73.0
Wed, Sep 16, 2020
3597.72
-0.11
11533856
5613
10493
93.0
65.0
73.0
Tue, Sep 15, 2020
3597.83
-0.10
11544229
5738
10108
93.0
63.0
73.0
Mon, Sep 14, 2020
3597.93
-0.10
11553665
5920
10292
90.0
62.0
74.0
Sun, Sep 13, 2020
3598.03
-0.06
11563106
6520
8836
90.0
59.0
75.0
Sat, Sep 12, 2020
3598.09
-0.12
11568772
4978
10383
87.0
57.0
74.0
Fri, Sep 11, 2020
3598.21
-0.14
11580111
3937
10375
69.0
52.0
74.0
Thu, Sep 10, 2020
3598.35
-0.12
11593348
5016
10427
71.0
50.0
73.0
Wed, Sep 09, 2020
3598.47
-0.26
11604702
-2183
10453
55.0
49.0
73.0
Tue, Sep 08, 2020
3598.73
-0.07
11629325
7707
10547
87.0
62.0
76.0
Mon, Sep 07, 2020
3598.80
-0.15
11635961
1846
8819
100.0
74.0
78.0
Averages of List
3597.99
-0.12
11559449
4639
10042
86.0
61.1
73.8

Averages for September 21st

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Since Filled
3647.35
-0.07
17340042
9366
13448
85.1
58.7
74.0
All-Time
3634.03
-0.06
15804051
9167
12779
84.4
58.3
74.0

Last 10 September 21st's data records

DATE MEASURED ELEVATION CHG vs TODAY CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Sat, Sep 21, 2019
3616.27
19.00
13371787
6589
11381
78.0
53.0
73.0
Fri, Sep 21, 2018
3593.78
-3.49
11166169
3347
11656
90.0
58.0
75.0
Thu, Sep 21, 2017
3629.00
31.73
14741149
7669
11572
82.0
64.0
74.0
Wed, Sep 21, 2016
3611.12
13.85
12843368
5171
12050
73.0
60.0
73.0
Mon, Sep 21, 2015
3606.98
9.71
12428717
7222
12339
86.0
63.0
78.0
Sun, Sep 21, 2014
3605.66
8.39
12298408
13703
9144
82.9
66.0
77.0
Sat, Sep 21, 2013
3591.20
-6.07
10929487
10084
9349
89.1
63.0
67.0
Fri, Sep 21, 2012
3622.19
24.92
13996673
4345
8113
90.0
63.0
74.0
Wed, Sep 21, 2011
3653.82
56.55
17695904
14328
15349
89.6
63.0
74.0
Tue, Sep 21, 2010
3633.71
36.44
15272498
6751
8118
91.9
62.1
73.0
Averages of List
3616.37
-0.02
13474416
7921
10907
85.2
61.5
73.8


Accessibility of Primitive Launches and Other Sites
As of Sunday, September 20th, 2020 where elevation was 3597.27'

SITE/LAUNCH NAME MINIMUM SAFE
ELEVATION
ABSOLUTE MINIMUM
USABLE ELEVATION
CURRENT LEVEL VS.
ABSOLUTE MINIMUM
CURRENT ACCESSIBILITY
Halls Crossing Launch
3550.00
3548.00
49.27 Above
Open and Usable
Wahweap
3558.00
3556.00
41.27 Above
Open and Usable
Bullfrog (Main Launch)
3578.00
3576.00
21.27 Above
Open and Usable
Castle Rock Cut-Off
3583.00
3580.00
17.27 Above
Open and Usable
Antelope Point
3588.00
3587.00
10.27 Above
Open and Usable
Dominguez Butte Cut-Off
3602.00
3600.00
2.73 Below
Unusable, go to main marinas
Gunsight to Padre Bay Cut-Off
3613.00
3609.00
11.73 Below
Unusable, go to main marinas
Hite Marina
3650.00
3645.00
47.73 Below
Unusable, go to main marinas
Farley Canyon
3653.00
3649.00
51.73 Below
Unusable, go to main marinas
Copper Canyon
3663.00
3660.00
62.73 Below
Unusable, go to main marinas
Bullfrog to Halls Creek Cut-Off
3670.00
3668.00
70.73 Below
Unusable, use Main Channel
Piute Farms
3682.00
3680.00
82.73 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.


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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 - 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 1.185 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


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1999 - 2020



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Lake Powell, Houseboating, Glen Canyon, Striped Bass