Lake Powell, Houseboating, Glen Canyon, Striped Bass

Lake Powell





Lake Powell

For April 18th, 2021
Snowpack is 71% of avg
TotalPrecip is 73.00% of avg

Lake Powell is currently 432.31 feet deep at the dam
Water Summary
Today is day 200 of 365 for the Water Year 2021. We are 55% through the Water Year.
Last Reading: 3564.31 on Apr 17, 2021
Powell was last within 2" of this elevation on Apr 16, 2021
There are currently 2,820,254,219,389 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 135.69 feet below Full Pool (Elevation 3,700)

By content, Lake Powell is 35.59% of Full Pool (24,322,000 af)
Total inflows for water year 2021: 1,695,438 acre feet

This is 45.85% of the April 17th average of 3,697,582 acre feet
Total releases for water year 2021: 4,527,489 acre feet

This is 60.37% of the minimum required of 7,500,000 acre feet
During WY 2021, water storage has fallen by 2,701,506 AF and total outflows have exceeded total inflows by 2,832,051 AF
The 28 tracked reservoirs above Lake Powell are currently at 70.61% of capacity. Click for Details
Inflows for WY 2021 are 57.95% of WY 2020         Rivers feeding Lake Powell are running at 27.66% of the Apr 18th avg. Click for Details

Lake Powell is down -35.62 feet from one year ago.    Lake Powell is at low for water year and down 31.52 feet from the high.

View Acre Feet     Last 14 Measurements
Lake Powell is down -1.84 feet over these measurements

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Sat, Apr 17, 2021
3564.31
-0.14
8655031
4061
9725
61.0
46.0
n/a
Fri, Apr 16, 2021
3564.45
-0.13
8665966
5569
10811
62.0
41.0
55.0
Thu, Apr 15, 2021
3564.58
-0.16
8676127
3925
10450
63.0
50.0
55.0
Wed, Apr 14, 2021
3564.74
-0.13
8688645
5417
10669
77.0
57.0
55.0
Tue, Apr 13, 2021
3564.87
-0.21
8698826
2577
11248
77.0
58.0
56.0
Mon, Apr 12, 2021
3565.08
-0.18
8715287
5192
11309
79.0
52.0
56.0
Sun, Apr 11, 2021
3565.26
-0.06
8729415
7827
10100
79.0
51.0
56.0
Sat, Apr 10, 2021
3565.32
-0.13
8734127
5543
10813
78.0
49.0
55.0
Fri, Apr 09, 2021
3565.45
-0.17
8744344
4199
11187
76.0
54.0
55.0
Thu, Apr 08, 2021
3565.62
-0.11
8757716
6268
10690
79.0
50.0
55.0
Wed, Apr 07, 2021
3565.73
-0.14
8766377
4696
10408
77.0
45.0
55.0
Tue, Apr 06, 2021
3565.87
-0.13
8777407
5776
11063
70.0
53.0
55.0
Mon, Apr 05, 2021
3566.00
-0.15
8787658
4838
10989
86.0
60.0
54.0
Sun, Apr 04, 2021
3566.15
-0.15
8799497
3468
9625
86.0
57.0
54.0
Averages of List
3565.25
-0.14
8728316
4954
10649
75.0
51.6
55.1

Averages for April 18th

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Since Filled
3633.11
0.05
15651801
14391
12266
73.3
46.9
56.0
All-Time
3618.58
0.03
14480321
13998
12351
72.5
46.3
56.0

Last 10 April 18th's data records

DATE MEASURED ELEVATION CHG vs TODAY CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Sat, Apr 18, 2020
3599.93
35.62
11743399
11195
10811
67.0
50.0
55.0
Thu, Apr 18, 2019
3568.77
4.46
9008033
12630
11891
76.0
47.0
56.0
Wed, Apr 18, 2018
3610.56
46.25
12786751
6504
12688
64.0
37.0
54.0
Tue, Apr 18, 2017
3600.21
35.90
11770118
26558
11107
82.0
53.0
59.0
Mon, Apr 18, 2016
3591.26
26.95
10934955
13904
11559
64.0
45.0
57.0
Sat, Apr 18, 2015
3590.65
26.34
10879450
8405
9531
77.0
46.0
56.0
Fri, Apr 18, 2014
3574.68
10.37
9490640
11347
8768
75.0
55.9
56.0
Thu, Apr 18, 2013
3597.41
33.10
11504653
4413
9676
55.9
37.0
54.0
Wed, Apr 18, 2012
3635.94
71.63
15528762
12816
10433
80.1
50.0
55.0
Mon, Apr 18, 2011
3609.98
45.67
12728287
15866
15476
77.0
64.0
54.0
Averages of List
3597.94
0.02
11637505
12364
11194
71.8
48.5
55.6


Accessibility of Primitive Launches and Other Sites
As of Saturday, April 17th, 2021 where elevation was 3564.31'

SITE/LAUNCH NAME MINIMUM SAFE
ELEVATION
ABSOLUTE MINIMUM
USABLE ELEVATION
CURRENT LEVEL VS.
ABSOLUTE MINIMUM
CURRENT ACCESSIBILITY
Halls Crossing Launch
3550.00
3548.00
16.31 Above
Open and Usable
Wahweap
3558.00
3556.00
8.31 Above
Open and Usable
Bullfrog (Main Launch)
3578.00
3576.00
11.69 Below
Unusable, go to main marinas
Castle Rock Cut-Off
3583.00
3580.00
15.69 Below
Unusable, use Main Channel
Antelope Point
3588.00
3587.00
22.69 Below
Unusable, go to main marinas
Dominguez Butte Cut-Off
3602.00
3600.00
35.69 Below
Unusable, go to main marinas
Gunsight to Padre Bay Cut-Off
3613.00
3609.00
44.69 Below
Unusable, go to main marinas
Hite Marina
3650.00
3645.00
80.69 Below
Unusable, go to main marinas
Farley Canyon
3653.00
3649.00
84.69 Below
Unusable, go to main marinas
Copper Canyon
3663.00
3660.00
95.69 Below
Unusable, go to main marinas
Bullfrog to Halls Creek Cut-Off
3670.00
3668.00
103.69 Below
Unusable, use Main Channel
Piute Farms
3682.00
3680.00
115.69 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 1.022 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