Lake Powell
Lake Powell
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| Elevation & Content |
Water Inflow Data |
Glen Canyon Dam Release Data | Lake Powell is 135.85 feet below Full Pool (Elevation 3,700)
By content, Lake Powell is 35.53% of Full Pool (24,322,000 af)
| Total inflows for water year 2021: 1,701,175 acre feet
This is 45.67% of the April 18th average of 3,724,682 acre feet | Total releases for water year 2021: 4,546,132 acre feet
This is 60.62% of the minimum required of 7,500,000 acre feet |
| During WY 2021, water storage has fallen by 2,713,990 AF and total outflows have exceeded total inflows by 2,844,957 AF |
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The 28 tracked reservoirs above Lake Powell are currently at 70.6% of capacity. Click for Details |
| Inflows for WY 2021 are 57.82% of WY 2020
Rivers feeding Lake Powell are running at 26.39% of the Apr 19th avg. Click for Details
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Lake Powell is down -35.78 feet from one year ago. Lake Powell is at low for water year and down 31.68 feet from the high.
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View Acre Feet
Last 14 Measurements
Lake Powell is down -1.85 feet over these measurements
| DATE MEASURED |
ELEVATION |
CHANGE |
CONTENT |
INFLOW (cfs) |
OUTFLOW (cfs) |
HIGH TEMP |
LOW TEMP |
WATER TEMP |
| Sun, Apr 18, 2021 |
3564.15 |
-0.16 |
8642547 |
2892 |
9399 |
66.0 |
45.0 |
n/a |
| 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 |
| Averages of List |
3565.10 |
-0.14 |
8717105 |
4913 |
10633 |
73.6 |
50.8 |
55.2 |
Averages for April 19th
| AVERAGE TYPE |
ELEVATION |
CHANGE |
CONTENT |
INFLOW (cfs) |
OUTFLOW (cfs) |
HIGH TEMP |
LOW TEMP |
WATER TEMP |
| Since Filled |
3633.16 |
0.05 |
15657495 |
14756 |
12391 |
72.6 |
45.8 |
56.1 |
| All-Time |
3618.61 |
0.03 |
14485021 |
14395 |
12416 |
71.5 |
44.3 |
56.1 |
Last 10 April 19th's data records
| DATE MEASURED |
ELEVATION |
CHG vs TODAY |
CONTENT |
INFLOW (cfs) |
OUTFLOW (cfs) |
HIGH TEMP |
LOW TEMP |
WATER TEMP |
| Sun, Apr 19, 2020 |
3599.96 |
35.81 |
11746260 |
11345 |
9404 |
71.0 |
46.0 |
55.0 |
| Fri, Apr 19, 2019 |
3568.76 |
4.61 |
9007231 |
12473 |
12608 |
83.0 |
50.0 |
56.0 |
| Thu, Apr 19, 2018 |
3610.46 |
46.31 |
12776658 |
7235 |
12317 |
75.0 |
45.0 |
54.0 |
| Wed, Apr 19, 2017 |
3600.50 |
36.35 |
11797834 |
26426 |
10950 |
78.0 |
57.0 |
59.0 |
| Tue, Apr 19, 2016 |
3591.35 |
27.20 |
10943159 |
16425 |
11597 |
73.9 |
45.0 |
58.0 |
| Sun, Apr 19, 2015 |
3590.59 |
26.44 |
10874001 |
6535 |
9144 |
75.0 |
51.0 |
56.0 |
| Sat, Apr 19, 2014 |
3574.78 |
10.63 |
9498951 |
12697 |
7854 |
73.9 |
55.9 |
57.0 |
| Fri, Apr 19, 2013 |
3597.32 |
33.17 |
11496183 |
5240 |
9476 |
66.0 |
37.0 |
54.0 |
| Thu, Apr 19, 2012 |
3635.92 |
71.77 |
15526451 |
9948 |
10711 |
82.0 |
57.9 |
56.0 |
| Tue, Apr 19, 2011 |
3610.00 |
45.85 |
12730300 |
15454 |
13937 |
75.2 |
51.1 |
54.0 |
| Averages of List |
3597.96 |
0.02 |
11639703 |
12378 |
10800 |
75.3 |
49.6 |
55.9 |
Accessibility of Primitive Launches and Other Sites
As of Sunday, April 18th, 2021 where elevation was 3564.15'
| SITE/LAUNCH NAME |
MINIMUM SAFE
ELEVATION |
ABSOLUTE MINIMUM
USABLE ELEVATION |
CURRENT LEVEL VS.
ABSOLUTE MINIMUM |
CURRENT ACCESSIBILITY |
| Halls Crossing Launch |
3550.00 |
3548.00 |
16.15 Above |
Open and Usable |
| Wahweap |
3558.00 |
3556.00 |
8.15 Above |
Open and Usable |
| Bullfrog (Main Launch) |
3578.00 |
3576.00 |
11.85 Below |
Unusable, go to main marinas |
| Castle Rock Cut-Off |
3583.00 |
3580.00 |
15.85 Below |
Unusable, use Main Channel |
| Antelope Point |
3588.00 |
3587.00 |
22.85 Below |
Unusable, go to main marinas |
| Dominguez Butte Cut-Off |
3602.00 |
3600.00 |
35.85 Below |
Unusable, go to main marinas |
| Gunsight to Padre Bay Cut-Off |
3613.00 |
3609.00 |
44.85 Below |
Unusable, go to main marinas |
| Hite Marina |
3650.00 |
3645.00 |
80.85 Below |
Unusable, go to main marinas |
| Farley Canyon |
3653.00 |
3649.00 |
84.85 Below |
Unusable, go to main marinas |
| Copper Canyon |
3663.00 |
3660.00 |
95.85 Below |
Unusable, go to main marinas |
| Bullfrog to Halls Creek Cut-Off |
3670.00 |
3668.00 |
103.85 Below |
Unusable, use Main Channel |
| Piute Farms |
3682.00 |
3680.00 |
115.85 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 0.982 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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