Lake Powell, Houseboating, Glen Canyon, Striped Bass

Lake Powell





Lake Powell

For September 25th, 2021
Snowpack is 81% of avg
TotalPrecip is 80.00% of avg

Lake Powell is currently 414.28 feet deep at the dam
Water Summary
Today is day 360 of 365 for the Water Year 2021. We are 99% through the Water Year.
Last Reading: 3546.28 on Sep 24, 2021
Powell was last within 2" of this elevation on Apr 14, 1969
There are currently 2,385,848,319,481 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 153.72 feet below Full Pool (Elevation 3,700)

By content, Lake Powell is 30.1% of Full Pool (24,322,000 af)
Total inflows for water year 2021: 3,972,286 acre feet

This is 38.11% of the September 24th average of 10,423,571 acre feet
Total releases for water year 2021: 8,101,518 acre feet

This is 108.02% of the minimum required of 7,500,000 acre feet
During WY 2021, water storage has fallen by 4,034,647 AF and total outflows have exceeded total inflows by 4,129,232 AF
The 28 tracked reservoirs above Lake Powell are currently at 64.18% of capacity. Click for Details
Inflows for WY 2021 are 60.81% of WY 2020         Rivers feeding Lake Powell are running at 61.49% of the Sep 25th avg. Click for Details

Lake Powell is down -50.49 feet from one year ago.    Lake Powell is at low for water year and down 49.55 feet from the high.

View Acre Feet     Last 14 Measurements
Lake Powell is down -2.10 feet over these measurements

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Fri, Sep 24, 2021
3546.28
-0.16
7321890
4827
10408
n/a
n/a
n/a
Thu, Sep 23, 2021
3546.44
-0.16
7333090
4858
10445
88.0
61.0
76.0
Wed, Sep 22, 2021
3546.60
-0.15
7344301
5155
10365
86.0
56.0
75.0
Tue, Sep 21, 2021
3546.75
-0.18
7354821
4281
10643
79.0
56.0
75.0
Mon, Sep 20, 2021
3546.93
-0.13
7367458
6107
10562
79.0
63.0
77.0
Sun, Sep 19, 2021
3547.06
-0.14
7376594
4493
9335
86.0
60.0
77.0
Sat, Sep 18, 2021
3547.20
-0.22
7386441
3252
11165
86.0
63.0
77.0
Fri, Sep 17, 2021
3547.42
-0.17
7401932
4421
10424
92.0
64.0
77.0
Thu, Sep 16, 2021
3547.59
-0.16
7413916
4825
10451
93.0
68.0
78.0
Wed, Sep 15, 2021
3547.75
-0.16
7425208
3731
9361
95.0
70.0
79.0
Tue, Sep 14, 2021
3547.91
-0.16
7436510
5418
11054
95.0
72.0
79.0
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
Averages of List
3547.33
-0.16
7395738
4719
10281
89.4
65.0
77.3

Averages for September 25th

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Since Filled
3645.83
-0.07
17158457
9783
12979
84.0
57.8
73.4
All-Time
3633.08
-0.08
15691481
9522
12505
84.1
57.8
73.4

Last 10 September 25th's data records

DATE MEASURED ELEVATION CHG vs TODAY CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Fri, Sep 25, 2020
3596.61
50.33
11429506
2927
10334
94.0
67.0
72.0
Wed, Sep 25, 2019
3615.91
69.63
13334394
6065
11979
87.0
58.0
72.0
Tue, Sep 25, 2018
3593.13
46.85
11106235
3384
11665
87.0
66.0
75.0
Mon, Sep 25, 2017
3628.63
82.35
14699978
4808
10521
70.0
45.0
71.0
Sun, Sep 25, 2016
3610.94
64.66
12825151
10143
10404
75.0
55.0
72.0
Fri, Sep 25, 2015
3606.54
60.26
12385178
7239
12345
91.0
64.0
77.0
Thu, Sep 25, 2014
3605.43
59.15
12275797
9889
10684
93.0
64.9
77.0
Wed, Sep 25, 2013
3591.38
45.10
10945895
19310
10633
84.9
63.0
72.0
Tue, Sep 25, 2012
3621.92
75.64
13967736
6602
8031
75.9
61.0
73.0
Sun, Sep 25, 2011
3653.54
107.26
17660388
12708
15483
89.1
63.0
74.0
Averages of List
3612.40
-0.07
13063026
8308
11208
84.7
60.7
73.5


Accessibility of Launch Ramps, Primitive Launches and Other Sites
As of Friday, September 24th, 2021 where elevation was 3546.28'


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
4.72 Below
Unusable, go to main marinas
Halls Crossing Launch
3556.00
3553.00
6.72 Below
Unusable, go to main marinas
Stateline Launch
3564.00
3562.00
15.72 Below
Unusable, go to main marinas
Bullfrog (Main Launch)
3578.00
3576.00
29.72 Below
Unusable, go to main marinas
Castle Rock Cut-Off
3583.00
3580.00
33.72 Below
Unusable, use Main Channel
Antelope Point
3588.00
3587.00
40.72 Below
Unusable, go to main marinas
Dominguez Butte Cut-Off
3602.00
3600.00
53.72 Below
Unusable, go to main marinas
Gunsight to Padre Bay Cut-Off
3613.00
3609.00
62.72 Below
Unusable, go to main marinas
Hite Marina
3650.00
3645.00
98.72 Below
Unusable, go to main marinas
Farley Canyon
3653.00
3649.00
102.72 Below
Unusable, go to main marinas
Copper Canyon
3663.00
3660.00
113.72 Below
Unusable, go to main marinas
Bullfrog to Halls Creek Cut-Off
3670.00
3668.00
121.72 Below
Unusable, use Main Channel
Piute Farms
3682.00
3680.00
133.72 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 1.118 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