Lake Powell, Houseboating, Glen Canyon, Striped Bass

Lake Powell





Lake Powell

For October 20th, 2020
Snowpack is 65% of avg
TotalPrecip is 19.00% of avg

Lake Powell is currently 461.34 feet deep at the dam
Water Summary
Today is day 21 of 365 for the Water Year 2021. We are 6% through the Water Year.
Last Reading: 3593.34 on Oct 19, 2020
Powell was last within 2" of this elevation on Oct 18, 2020
There are currently 3,625,284,838,048 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 106.66 feet below Full Pool (Elevation 3,700)

By content, Lake Powell is 45.74% of Full Pool (24,322,000 af)
Total inflows for water year 2021: 145,722 acre feet

This is 40.87% of the October 19th average of 356,561 acre feet
Total releases for water year 2021: 391,247 acre feet

This is 5.22% of the minimum required of 7,500,000 acre feet
During WY 2021, water storage has fallen by 2,138,374 AF and total outflows have exceeded total inflows by 245,525 AF
The 28 tracked reservoirs above Lake Powell are currently at 71.52% of capacity. Click for Details
Inflows for WY 2021 are 60.7% of WY 2020         Rivers feeding Lake Powell are running at 53.99% of the Oct 20th avg. Click for Details

Lake Powell is down -20.45 feet from one year ago.    Lake Powell is at low for water year and down 2.49 feet from the high.

View Acre Feet     Last 14 Measurements
Lake Powell is down -1.81 feet over these measurements

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Mon, Oct 19, 2020
3593.34
-0.12
11125576
4948
10471
85.0
56.0
68.0
Sun, Oct 18, 2020
3593.46
-0.13
11136638
2866
8893
85.0
58.0
67.0
Sat, Oct 17, 2020
3593.59
-0.14
11148629
4051
10586
80.0
50.0
66.0
Fri, Oct 16, 2020
3593.73
-0.20
11161552
1050
10608
75.0
52.0
67.0
Thu, Oct 15, 2020
3593.93
-0.12
11180029
5172
10711
82.0
63.0
67.0
Wed, Oct 14, 2020
3594.05
-0.13
11191125
4546
10592
89.0
54.0
67.0
Tue, Oct 13, 2020
3594.18
-0.16
11203154
3529
11092
84.0
53.0
68.0
Mon, Oct 12, 2020
3594.34
-0.17
11217969
2638
10713
80.0
53.0
68.0
Sun, Oct 11, 2020
3594.51
-0.07
11233724
6231
9260
84.0
60.0
69.0
Sat, Oct 10, 2020
3594.58
-0.16
11240216
2615
10194
85.0
58.0
70.0
Fri, Oct 09, 2020
3594.74
-0.13
11255063
4204
10271
83.0
61.0
70.0
Thu, Oct 08, 2020
3594.87
-0.15
11267135
3572
10655
86.0
60.0
70.0
Wed, Oct 07, 2020
3595.02
-0.13
11281074
4498
10574
85.0
54.0
70.0
Tue, Oct 06, 2020
3595.15
-0.14
11293164
4065
10652
65.0
56.0
70.0
Averages of List
3594.25
-0.14
11209646
3856
10377
82.0
56.3
68.4

Averages for October 21st

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Since Filled
3646.02
-0.03
17161348
9914
11173
71.0
47.4
66.6
All-Time
3632.77
-0.00
15643168
10370
10302
71.3
47.8
66.6

Last 10 October 21st's data records

DATE MEASURED ELEVATION CHG vs TODAY CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Sun, Oct 20, 2019
3613.77
20.43
13113526
8270
8812
64.0
49.0
64.0
Sat, Oct 20, 2018
3591.45
-1.89
10952280
8212
10202
69.0
47.0
65.0
Fri, Oct 20, 2017
3627.75
34.41
14602391
9000
10777
81.0
55.0
65.0
Thu, Oct 20, 2016
3610.03
16.69
12733320
7078
10355
69.0
45.0
67.0
Tue, Oct 20, 2015
3606.15
12.81
12346673
17691
10165
61.0
53.1
71.0
Mon, Oct 20, 2014
3606.05
12.71
12336813
8672
10273
n/a
n/a
n/a
Sun, Oct 20, 2013
3591.08
-2.26
10918558
7142
7144
72.0
42.1
64.0
Sat, Oct 20, 2012
3620.23
26.89
13787615
2939
8117
78.1
48.9
67.0
Thu, Oct 20, 2011
3651.23
57.89
17369308
10404
15493
77.0
50.0
68.0
Wed, Oct 20, 2010
3634.12
40.78
15319388
7567
8011
69.1
53.1
69.0
Averages of List
3615.19
-0.01
13347987
8698
9935
71.1
49.2
66.7


Accessibility of Primitive Launches and Other Sites
As of Monday, October 19th, 2020 where elevation was 3593.34'

SITE/LAUNCH NAME MINIMUM SAFE
ELEVATION
ABSOLUTE MINIMUM
USABLE ELEVATION
CURRENT LEVEL VS.
ABSOLUTE MINIMUM
CURRENT ACCESSIBILITY
Halls Crossing Launch
3550.00
3548.00
45.34 Above
Open and Usable
Wahweap
3558.00
3556.00
37.34 Above
Open and Usable
Bullfrog (Main Launch)
3578.00
3576.00
17.34 Above
Open and Usable
Castle Rock Cut-Off
3583.00
3580.00
13.34 Above
Open and Usable
Antelope Point
3588.00
3587.00
6.34 Above
Open and Usable
Dominguez Butte Cut-Off
3602.00
3600.00
6.66 Below
Unusable, go to main marinas
Gunsight to Padre Bay Cut-Off
3613.00
3609.00
15.66 Below
Unusable, go to main marinas
Hite Marina
3650.00
3645.00
51.66 Below
Unusable, go to main marinas
Farley Canyon
3653.00
3649.00
55.66 Below
Unusable, go to main marinas
Copper Canyon
3663.00
3660.00
66.66 Below
Unusable, go to main marinas
Bullfrog to Halls Creek Cut-Off
3670.00
3668.00
74.66 Below
Unusable, use Main Channel
Piute Farms
3682.00
3680.00
86.66 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 1.097 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