Lake Powell, Houseboating, Glen Canyon, Striped Bass

Lake Powell





Lake Powell

For August 5th, 2021
Snowpack is 19% of avg
TotalPrecip is 80.00% of avg

Lake Powell is currently 421.33 feet deep at the dam
Water Summary
Today is day 309 of 365 for the Water Year 2021. We are 85% through the Water Year.
Last Reading: 3553.33 on Aug 4, 2021
Powell was last within 2" of this elevation on Aug 3, 2021
There are currently 2,550,120,126,234 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 146.67 feet below Full Pool (Elevation 3,700)

By content, Lake Powell is 32.18% of Full Pool (24,322,000 af)
Total inflows for water year 2021: 3,264,216 acre feet

This is 34.41% of the August 4th average of 9,486,507 acre feet
Total releases for water year 2021: 6,903,929 acre feet

This is 92.05% of the minimum required of 7,500,000 acre feet
During WY 2021, water storage has fallen by 3,530,516 AF and total outflows have exceeded total inflows by 3,639,713 AF
The 28 tracked reservoirs above Lake Powell are currently at 69.35% of capacity. Click for Details
Inflows for WY 2021 are 53.3% of WY 2020         Rivers feeding Lake Powell are running at 60.04% of the Aug 5th avg. Click for Details

Lake Powell is down -52.22 feet from one year ago.    Lake Powell is at low for water year and down 42.50 feet from the high.

View Acre Feet     Last 14 Measurements
Lake Powell is down -2.02 feet over these measurements

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Wed, Aug 04, 2021
3553.33
-0.14
7826021
8504
13505
99.0
75.0
79.0
Tue, Aug 03, 2021
3553.47
-0.15
7836253
7885
13289
98.0
72.0
79.0
Mon, Aug 02, 2021
3553.62
-0.18
7847226
7577
14182
95.0
71.0
79.0
Sun, Aug 01, 2021
3553.80
-0.08
7860406
8279
10898
93.0
70.0
79.0
Sat, Jul 31, 2021
3553.88
-0.13
7866268
8803
13423
95.0
74.0
80.0
Fri, Jul 30, 2021
3554.01
-0.15
7875800
7133
12556
94.0
72.0
80.0
Thu, Jul 29, 2021
3554.16
-0.08
7886808
9832
12459
98.0
75.0
79.0
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
Averages of List
3554.25
-0.16
7893179
7041
12818
95.0
73.3
80.4

Averages for August 5th

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Since Filled
3651.41
-0.11
17859423
10731
16181
96.4
70.4
79.8
All-Time
3638.52
-0.09
16337662
10999
14931
96.9
70.6
79.8

Last 10 August 5th's data records

DATE MEASURED ELEVATION CHG vs TODAY CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Wed, Aug 05, 2020
3605.31
51.98
12264011
2961
14955
99.0
74.0
81.0
Mon, Aug 05, 2019
3621.59
68.26
13932428
12932
16063
101.0
73.0
80.0
Sun, Aug 05, 2018
3602.74
49.41
12013414
3336
11473
103.0
79.0
79.0
Sat, Aug 05, 2017
3634.23
80.90
15331985
8685
13893
86.0
66.0
80.0
Fri, Aug 05, 2016
3617.42
64.09
13491692
14673
14894
91.0
72.0
81.0
Wed, Aug 05, 2015
3612.26
58.93
12959133
9416
13521
99.0
71.0
79.0
Tue, Aug 05, 2014
3607.89
54.56
12519085
10181
13657
91.0
69.1
78.0
Mon, Aug 05, 2013
3593.45
40.12
11135715
3090
13362
96.1
71.1
78.0
Sun, Aug 05, 2012
3627.69
74.36
14595755
5996
12238
91.9
73.0
79.0
Fri, Aug 05, 2011
3660.51
107.18
18559448
21387
24146
98.1
71.1
80.0
Averages of List
3618.31
-0.08
13680267
9266
14820
95.6
71.9
79.5


Accessibility of Launch Ramps, Primitive Launches and Other Sites
As of Wednesday, August 4th, 2021 where elevation was 3553.33'


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
2.33 Above
Open and Usable
Halls Crossing Launch
3556.00
3553.00
0.33 Above
Looking bad, not likely. Go very slow!
Stateline Launch
3564.00
3562.00
8.67 Below
Unusable, go to main marinas
Bullfrog (Main Launch)
3578.00
3576.00
22.67 Below
Unusable, go to main marinas
Castle Rock Cut-Off
3583.00
3580.00
26.67 Below
Unusable, use Main Channel
Antelope Point
3588.00
3587.00
33.67 Below
Unusable, go to main marinas
Dominguez Butte Cut-Off
3602.00
3600.00
46.67 Below
Unusable, go to main marinas
Gunsight to Padre Bay Cut-Off
3613.00
3609.00
55.67 Below
Unusable, go to main marinas
Hite Marina
3650.00
3645.00
91.67 Below
Unusable, go to main marinas
Farley Canyon
3653.00
3649.00
95.67 Below
Unusable, go to main marinas
Copper Canyon
3663.00
3660.00
106.67 Below
Unusable, go to main marinas
Bullfrog to Halls Creek Cut-Off
3670.00
3668.00
114.67 Below
Unusable, use Main Channel
Piute Farms
3682.00
3680.00
126.67 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 1.705 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