Lake Powell, Houseboating, Glen Canyon, Striped Bass

Lake Powell





Lake Powell

For September 19th, 2021
Snowpack is 95% of avg
TotalPrecip is 81.00% of avg

Lake Powell is currently 415.2 feet deep at the dam
Water Summary
Today is day 354 of 365 for the Water Year 2021. We are 97% through the Water Year.
Last Reading: 3547.20 on Sep 18, 2021
Powell was last within 2" of this elevation on Sep 11, 1968
There are currently 2,406,882,355,074 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 152.8 feet below Full Pool (Elevation 3,700)

By content, Lake Powell is 30.37% of Full Pool (24,322,000 af)
Total inflows for water year 2021: 3,913,334 acre feet

This is 37.94% of the September 18th average of 10,313,986 acre feet
Total releases for water year 2021: 7,979,021 acre feet

This is 106.39% of the minimum required of 7,500,000 acre feet
During WY 2021, water storage has fallen by 3,970,096 AF and total outflows have exceeded total inflows by 4,065,687 AF
The 28 tracked reservoirs above Lake Powell are currently at 64.6% of capacity. Click for Details
Inflows for WY 2021 are 60.45% of WY 2020         Rivers feeding Lake Powell are running at 64.99% of the Sep 19th avg. Click for Details

Lake Powell is down -50.28 feet from one year ago.    Lake Powell is at low for water year and down 48.63 feet from the high.

View Acre Feet     Last 14 Measurements
Lake Powell is down -1.96 feet over these measurements

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Sat, Sep 18, 2021
3547.20
-0.22
7386441
3252
11165
n/a
n/a
n/a
Fri, Sep 17, 2021
3547.42
-0.17
7401932
4421
10424
92.0
64.0
n/a
Thu, Sep 16, 2021
3547.59
-0.16
7413916
4825
10451
93.0
68.0
n/a
Wed, Sep 15, 2021
3547.75
-0.16
7425208
3731
9361
95.0
70.0
n/a
Tue, Sep 14, 2021
3547.91
-0.16
7436510
5418
11054
95.0
72.0
n/a
Mon, Sep 13, 2021
3548.07
-0.18
7447824
4707
11120
96.0
70.0
78.0
Sun, Sep 12, 2021
3548.25
-0.13
7460566
3802
8292
95.0
70.0
78.0
Sat, Sep 11, 2021
3548.38
-0.12
7469777
6195
10302
92.0
72.0
79.0
Fri, Sep 10, 2021
3548.50
-0.14
7478286
5663
10545
98.0
74.0
79.0
Thu, Sep 09, 2021
3548.64
-0.15
7488221
5293
10568
97.0
70.0
79.0
Wed, Sep 08, 2021
3548.79
-0.13
7498876
6701
11205
98.0
67.0
79.0
Tue, Sep 07, 2021
3548.92
-0.12
7508117
6501
10621
97.0
72.0
80.0
Mon, Sep 06, 2021
3549.04
-0.12
7516655
6369
10492
98.0
69.0
80.0
Sun, Sep 05, 2021
3549.16
-0.04
7525199
7179
8200
95.0
70.0
80.0
Averages of List
3548.26
-0.14
7461252
5290
10271
95.5
69.8
79.1

Averages for September 19th

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Since Filled
3646.30
-0.07
17220722
9007
13181
86.6
59.5
74.1
All-Time
3633.56
-0.07
15751040
8930
12387
85.5
58.8
74.1

Last 10 September 19th's data records

DATE MEASURED ELEVATION CHG vs TODAY CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Sat, Sep 19, 2020
3597.35
50.15
11499006
4364
10262
92.0
72.0
72.0
Thu, Sep 19, 2019
3616.47
69.27
13392590
6005
11936
90.0
69.0
74.0
Wed, Sep 19, 2018
3594.14
46.94
11199452
4828
11639
90.0
67.0
75.0
Tue, Sep 19, 2017
3629.18
81.98
14761208
0
11582
88.0
61.0
77.0
Mon, Sep 19, 2016
3611.36
64.16
12867682
6329
12112
93.0
59.0
74.0
Sat, Sep 19, 2015
3607.15
59.95
12445565
6863
11444
87.1
59.0
77.0
Fri, Sep 19, 2014
3605.73
58.53
12305296
9075
10407
91.9
73.0
77.0
Thu, Sep 19, 2013
3591.19
43.99
10928576
12028
10797
84.0
62.1
66.0
Wed, Sep 19, 2012
3622.33
75.13
14011695
4890
8076
89.1
61.0
75.0
Mon, Sep 19, 2011
3653.90
106.70
17706060
15403
15602
88.0
62.1
75.0
Averages of List
3612.88
-0.10
13111713
6979
11386
89.3
64.5
74.2


Accessibility of Launch Ramps, Primitive Launches and Other Sites
As of Saturday, September 18th, 2021 where elevation was 3547.20'


NPS UPDATE ON RAMPS


SITE/LAUNCH NAME MINIMUM SAFE
ELEVATION
ABSOLUTE MINIMUM
USABLE ELEVATION
CURRENT LEVEL VS.
ABSOLUTE MINIMUM
CURRENT ACCESSIBILITY
Wahweap
3553.00
3551.00
3.8 Below
Unusable, go to main marinas
Halls Crossing Launch
3556.00
3553.00
5.8 Below
Unusable, go to main marinas
Stateline Launch
3564.00
3562.00
14.8 Below
Unusable, go to main marinas
Bullfrog (Main Launch)
3578.00
3576.00
28.8 Below
Unusable, go to main marinas
Castle Rock Cut-Off
3583.00
3580.00
32.8 Below
Unusable, use Main Channel
Antelope Point
3588.00
3587.00
39.8 Below
Unusable, go to main marinas
Dominguez Butte Cut-Off
3602.00
3600.00
52.8 Below
Unusable, go to main marinas
Gunsight to Padre Bay Cut-Off
3613.00
3609.00
61.8 Below
Unusable, go to main marinas
Hite Marina
3650.00
3645.00
97.8 Below
Unusable, go to main marinas
Farley Canyon
3653.00
3649.00
101.8 Below
Unusable, go to main marinas
Copper Canyon
3663.00
3660.00
112.8 Below
Unusable, go to main marinas
Bullfrog to Halls Creek Cut-Off
3670.00
3668.00
120.8 Below
Unusable, use Main Channel
Piute Farms
3682.00
3680.00
132.8 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 1.209 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