Lake Powell, Houseboating, Glen Canyon, Striped Bass

Lake Powell





Lake Powell

For August 1st, 2021
Snowpack is 53% of avg
TotalPrecip is 79.00% of avg

Lake Powell is currently 421.88 feet deep at the dam
Water Summary
Today is day 305 of 365 for the Water Year 2021. We are 84% through the Water Year.
Last Reading: 3553.88 on Jul 31, 2021
Powell was last within 2" of this elevation on May 4, 1969
There are currently 2,563,234,668,697 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 146.12 feet below Full Pool (Elevation 3,700)

By content, Lake Powell is 32.34% of Full Pool (24,322,000 af)
Total inflows for water year 2021: 3,200,258 acre feet

This is 34.06% of the July 31st average of 9,394,818 acre feet
Total releases for water year 2021: 6,801,037 acre feet

This is 90.68% of the minimum required of 7,500,000 acre feet
During WY 2021, water storage has fallen by 3,490,269 AF and total outflows have exceeded total inflows by 3,600,779 AF
The 28 tracked reservoirs above Lake Powell are currently at 69.54% of capacity. Click for Details
Inflows for WY 2021 are 52.72% of WY 2020         Rivers feeding Lake Powell are running at 62.08% of the Aug 1st avg. Click for Details

Lake Powell is down -52.37 feet from one year ago.    Lake Powell is at low for water year and down 41.95 feet from the high.

View Acre Feet     Last 14 Measurements
Lake Powell is down -2.45 feet over these measurements

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Sat, Jul 31, 2021
3553.88
-0.13
7866268
8803
13423
n/a
n/a
n/a
Fri, Jul 30, 2021
3554.01
-0.15
7875800
7133
12556
94.0
72.0
n/a
Thu, Jul 29, 2021
3554.16
-0.08
7886808
9832
12459
98.0
75.0
n/a
Wed, Jul 28, 2021
3554.24
-0.12
7892683
9219
13448
97.0
78.0
78.0
Tue, Jul 27, 2021
3554.36
-0.15
7901500
7415
12849
94.0
72.0
79.0
Mon, Jul 26, 2021
3554.51
-0.21
7912531
4881
12726
92.0
75.0
80.0
Sun, Jul 25, 2021
3554.72
-0.18
7927991
4786
11436
91.0
72.0
82.0
Sat, Jul 24, 2021
3554.90
-0.19
7941258
5864
12922
92.0
70.0
83.0
Fri, Jul 23, 2021
3555.09
-0.26
7955277
2697
12581
97.0
76.0
84.0
Thu, Jul 22, 2021
3555.35
-0.20
7974487
5700
13180
95.0
74.0
84.0
Wed, Jul 21, 2021
3555.55
-0.31
7989284
505
12434
99.0
76.0
84.0
Tue, Jul 20, 2021
3555.86
-0.14
8012254
7295
12371
94.0
74.0
82.0
Mon, Jul 19, 2021
3556.00
-0.33
8022641
-100
12670
95.0
73.0
82.0
Sun, Jul 18, 2021
3556.33
-0.13
8047159
5534
10218
96.0
81.0
81.0
Averages of List
3554.93
-0.18
7943282
5683
12520
94.9
74.5
81.7

Averages for August 1st

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Since Filled
3653.31
-0.11
18083539
11541
16702
96.3
71.4
79.7
All-Time
3639.66
-0.09
16474447
11473
15477
96.7
72.0
79.7

Last 10 August 1st's data records

DATE MEASURED ELEVATION CHG vs TODAY CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Sat, Aug 01, 2020
3606.13
52.25
12344701
5028
10623
91.0
76.0
80.0
Thu, Aug 01, 2019
3621.61
67.73
13934566
17254
15728
96.0
71.0
79.0
Wed, Aug 01, 2018
3603.59
49.71
12095911
5419
15712
101.0
79.0
79.0
Tue, Aug 01, 2017
3634.62
80.74
15376708
11559
14902
99.0
73.0
81.0
Mon, Aug 01, 2016
3618.00
64.12
13552431
3250
14899
96.0
73.0
78.0
Sat, Aug 01, 2015
3612.53
58.65
12986652
8222
12332
91.9
75.9
78.0
Fri, Aug 01, 2014
3608.07
54.19
12537012
15457
13509
95.0
72.0
79.0
Wed, Aug 01, 2012
3628.25
74.37
14657781
1569
12666
84.9
68.0
79.0
Mon, Aug 01, 2011
3660.81
106.93
18598864
26582
23968
91.9
71.6
79.0
Sun, Aug 01, 2010
3636.76
82.88
15623752
8788
12368
80.1
64.9
81.0
Averages of List
3621.51
-0.10
14009403
10482
14927
94.1
73.3
79.1


Accessibility of Launch Ramps, Primitive Launches and Other Sites
As of Saturday, July 31st, 2021 where elevation was 3553.88'


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
2.88 Above
Open and Usable
Halls Crossing Launch
3556.00
3553.00
0.88 Above
Looking bad, not likely. Go very slow!
Stateline Launch
3564.00
3562.00
8.12 Below
Unusable, go to main marinas
Bullfrog (Main Launch)
3578.00
3576.00
22.12 Below
Unusable, go to main marinas
Castle Rock Cut-Off
3583.00
3580.00
26.12 Below
Unusable, use Main Channel
Antelope Point
3588.00
3587.00
33.12 Below
Unusable, go to main marinas
Dominguez Butte Cut-Off
3602.00
3600.00
46.12 Below
Unusable, go to main marinas
Gunsight to Padre Bay Cut-Off
3613.00
3609.00
55.12 Below
Unusable, go to main marinas
Hite Marina
3650.00
3645.00
91.12 Below
Unusable, go to main marinas
Farley Canyon
3653.00
3649.00
95.12 Below
Unusable, go to main marinas
Copper Canyon
3663.00
3660.00
106.12 Below
Unusable, go to main marinas
Bullfrog to Halls Creek Cut-Off
3670.00
3668.00
114.12 Below
Unusable, use Main Channel
Piute Farms
3682.00
3680.00
126.12 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 1.875 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