Lake Powell
Lake Powell
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| Elevation & Content |
Water Inflow Data |
Glen Canyon Dam Release Data | Lake Powell is 139.52 feet below Full Pool (Elevation 3,700)
By content, Lake Powell is 34.37% of Full Pool (24,322,000 af)
| Total inflows for water year 2021: 2,018,864 acre feet
This is 41% of the May 17th average of 4,924,179 acre feet | Total releases for water year 2021: 5,151,776 acre feet
This is 68.69% of the minimum required of 7,500,000 acre feet |
| During WY 2021, water storage has fallen by 2,996,955 AF and total outflows have exceeded total inflows by 3,132,912 AF |
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The 28 tracked reservoirs above Lake Powell are currently at 70.96% of capacity. Click for Details |
| Inflows for WY 2021 are 53.96% of WY 2020
Rivers feeding Lake Powell are running at 17.54% of the May 18th avg. Click for Details
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Lake Powell is down -41.29 feet from one year ago. Lake Powell is at low for water year and down 35.35 feet from the high.
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View Acre Feet
Last 14 Measurements
Lake Powell is down -1.31 feet over these measurements
| DATE MEASURED |
ELEVATION |
CHANGE |
CONTENT |
INFLOW (cfs) |
OUTFLOW (cfs) |
HIGH TEMP |
LOW TEMP |
WATER TEMP |
| Mon, May 17, 2021 |
3560.48 |
-0.12 |
8359582 |
6552 |
11216 |
80.0 |
60.0 |
65.0 |
| Sun, May 16, 2021 |
3560.60 |
-0.11 |
8368731 |
4118 |
8369 |
83.0 |
61.0 |
64.0 |
| Sat, May 15, 2021 |
3560.71 |
-0.07 |
8377124 |
5856 |
8447 |
89.0 |
64.0 |
64.0 |
| Fri, May 14, 2021 |
3560.78 |
-0.10 |
8382468 |
7662 |
11502 |
92.0 |
65.0 |
63.0 |
| Thu, May 13, 2021 |
3560.88 |
-0.10 |
8390106 |
7328 |
11170 |
90.0 |
58.0 |
63.0 |
| Wed, May 12, 2021 |
3560.98 |
-0.07 |
8397749 |
8425 |
11020 |
83.0 |
53.0 |
62.0 |
| Tue, May 11, 2021 |
3561.05 |
-0.08 |
8403102 |
8509 |
11522 |
78.0 |
52.0 |
62.0 |
| Mon, May 10, 2021 |
3561.13 |
-0.14 |
8409223 |
5547 |
11063 |
80.0 |
55.0 |
62.0 |
| Sun, May 09, 2021 |
3561.27 |
-0.10 |
8419941 |
4777 |
8628 |
79.0 |
53.0 |
61.0 |
| Sat, May 08, 2021 |
3561.37 |
-0.06 |
8427603 |
7358 |
9542 |
83.0 |
63.0 |
61.0 |
| Fri, May 07, 2021 |
3561.43 |
-0.09 |
8432203 |
8239 |
11677 |
89.0 |
62.0 |
61.0 |
| Thu, May 06, 2021 |
3561.52 |
-0.15 |
8439106 |
5425 |
11373 |
91.0 |
59.0 |
61.0 |
| Wed, May 05, 2021 |
3561.67 |
-0.12 |
8450619 |
7112 |
11809 |
87.0 |
59.0 |
60.0 |
| Tue, May 04, 2021 |
3561.79 |
-0.16 |
8459837 |
5343 |
11720 |
82.0 |
54.0 |
60.0 |
| Averages of List |
3561.12 |
-0.11 |
8408385 |
6589 |
10647 |
84.7 |
58.4 |
62.1 |
Averages for May 18th
| AVERAGE TYPE |
ELEVATION |
CHANGE |
CONTENT |
INFLOW (cfs) |
OUTFLOW (cfs) |
HIGH TEMP |
LOW TEMP |
WATER TEMP |
| Since Filled |
3637.87 |
0.29 |
16197615 |
30038 |
14629 |
82.3 |
56.3 |
64.0 |
| All-Time |
3623.12 |
0.30 |
15003487 |
29582 |
14043 |
83.3 |
56.3 |
64.0 |
Last 10 May 18th's data records
| DATE MEASURED |
ELEVATION |
CHG vs TODAY |
CONTENT |
INFLOW (cfs) |
OUTFLOW (cfs) |
HIGH TEMP |
LOW TEMP |
WATER TEMP |
| Mon, May 18, 2020 |
3601.95 |
41.47 |
11937082 |
20309 |
10420 |
89.0 |
64.0 |
65.0 |
| Sat, May 18, 2019 |
3578.77 |
18.29 |
9834531 |
29734 |
10853 |
73.0 |
44.0 |
63.0 |
| Fri, May 18, 2018 |
3609.98 |
49.50 |
12728287 |
21007 |
12318 |
82.0 |
55.0 |
65.0 |
| Thu, May 18, 2017 |
3611.56 |
51.08 |
12887968 |
45780 |
11099 |
61.0 |
39.0 |
60.0 |
| Wed, May 18, 2016 |
3596.12 |
35.64 |
11383632 |
37171 |
11830 |
71.1 |
52.0 |
64.0 |
| Mon, May 18, 2015 |
3592.41 |
31.93 |
11040086 |
23734 |
11844 |
70.0 |
52.0 |
63.0 |
| Sun, May 18, 2014 |
3582.77 |
22.29 |
10178697 |
20350 |
7182 |
91.0 |
68.0 |
61.0 |
| Sat, May 18, 2013 |
3596.46 |
35.98 |
11415450 |
21590 |
9440 |
75.0 |
60.1 |
66.0 |
| Fri, May 18, 2012 |
3635.92 |
75.44 |
15526451 |
9618 |
10309 |
84.0 |
63.0 |
67.0 |
| Wed, May 18, 2011 |
3616.55 |
56.07 |
13400917 |
39333 |
22361 |
61.0 |
52.0 |
60.0 |
| Averages of List |
3602.25 |
0.28 |
12033310 |
26863 |
11766 |
75.7 |
54.9 |
63.4 |
Accessibility of Primitive Launches and Other Sites
As of Monday, May 17th, 2021 where elevation was 3560.48'
| SITE/LAUNCH NAME |
MINIMUM SAFE
ELEVATION |
ABSOLUTE MINIMUM
USABLE ELEVATION |
CURRENT LEVEL VS.
ABSOLUTE MINIMUM |
CURRENT ACCESSIBILITY |
| Halls Crossing Launch |
3550.00 |
3548.00 |
12.48 Above |
Open and Usable |
| Wahweap |
3558.00 |
3556.00 |
4.48 Above |
Open and Usable |
| Bullfrog (Main Launch) |
3578.00 |
3576.00 |
15.52 Below |
Unusable, go to main marinas |
| Castle Rock Cut-Off |
3583.00 |
3580.00 |
19.52 Below |
Unusable, use Main Channel |
| Antelope Point |
3588.00 |
3587.00 |
26.52 Below |
Unusable, go to main marinas |
| Dominguez Butte Cut-Off |
3602.00 |
3600.00 |
39.52 Below |
Unusable, go to main marinas |
| Gunsight to Padre Bay Cut-Off |
3613.00 |
3609.00 |
48.52 Below |
Unusable, go to main marinas |
| Hite Marina |
3650.00 |
3645.00 |
84.52 Below |
Unusable, go to main marinas |
| Farley Canyon |
3653.00 |
3649.00 |
88.52 Below |
Unusable, go to main marinas |
| Copper Canyon |
3663.00 |
3660.00 |
99.52 Below |
Unusable, go to main marinas |
| Bullfrog to Halls Creek Cut-Off |
3670.00 |
3668.00 |
107.52 Below |
Unusable, use Main Channel |
| Piute Farms |
3682.00 |
3680.00 |
119.52 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 1.348 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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