Lake Powell, Houseboating, Glen Canyon, Striped Bass

Lake Powell





Lake Powell

Lake Powell
For May 21st, 2025
Snowpack is 0% of avg
TotalPrecip is 0% of avg

Lake Powell is currently 426.45 feet deep at the dam
Water Summary
Today is day 231 of 365 for the Water Year 2025. We are 63% through the Water Year.
Last Reading: 3558.45 on Monday, May 19th, 2025
Powell was last within 3" of this elevation on May 18, 2025
There are currently 2,501,683,288,867 gallons of water in Lake Powell!
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Elevation & Content Water Inflow Data Glen Canyon Dam Release Data
Lake Powell is 141.55 feet below Full Pool (Elevation 3,700)

By content, Lake Powell is 31.57% of Full Pool (24,322,000 af)
Total inflows for water year 2025: 3,068,242 acre feet

This is 62.16% of the May 19th average of 4,936,329 acre feet
Total releases for water year 2025: 4,536,289 acre feet

This is 60.48% of the minimum required of 7,500,000 acre feet
During WY 2025, water storage has fallen by 1,464,320 AF and total outflows have exceeded total inflows by 1,468,047 AF
The 34 tracked reservoirs above Lake Powell are currently at 77.1% of capacity. Click for Details
Inflows for WY 2025 are 81.76% of WY         Rivers feeding Lake Powell are running at 31.40% of the May 21st avg. Click for Details

Lake Powell is down 4.29 feet from one year ago.    Lake Powell is up 0.6 feet from the low for water year.

View Acre Feet     Last 14 Measurements
Lake Powell is up 0.60 feet over these measurements

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Mon, May 19, 2025
3558.45
0.12
7,677,374
14606
9738
61.2
40.8
n/a
Sun, May 18, 2025
3558.33
0.10
7,668,947
13640
9540
72.3
47.2
n/a
Sat, May 17, 2025
3558.23
0.10
7,661,929
13647
9550
78.9
48.6
n/a
Fri, May 16, 2025
3558.13
0.09
7,654,915
13427
9714
79.8
40.6
n/a
Thu, May 15, 2025
3558.04
0.03
7,648,605
11021
9598
76.9
38.9
n/a
Wed, May 14, 2025
3558.01
0.05
7,646,503
11854
9669
69.6
43.3
n/a
Tue, May 13, 2025
3557.96
-0.01
7,643,000
9603
9707
81.2
50.8
n/a
Mon, May 12, 2025
3557.97
0.00
7,643,700
9969
9691
86.3
51.6
n/a
Sun, May 11, 2025
3557.97
0.01
7,643,700
10160
9501
88.6
53.5
n/a
Sat, May 10, 2025
3557.96
0.03
7,643,000
11060
9638
84.9
48.9
n/a
Fri, May 09, 2025
3557.93
0.06
7,640,898
11620
9055
83.4
52.1
n/a
Thu, May 08, 2025
3557.87
0.01
7,636,697
10463
9804
79.6
46.4
n/a
Wed, May 07, 2025
3557.86
-0.04
7,635,996
8592
9839
70.5
46.6
n/a
Tue, May 06, 2025
3557.90
0.05
7,638,797
12116
9932
61.4
47.5
n/a
Averages of List
3558.04
0.04
7,648,862
11556
9641
76.8
46.9
n/a

Averages for May 19th

AVERAGE TYPE ELEVATION CUR vs AVERAGE CHANGE CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
All-Time
3618.92
-60.47
0.38
14,567,732
31761
13693
83.8
57.4
65
Since Filled
3630.71
-72.26
0.33
15,492,084
32650
14213
82.6
55.9
65.2
Since WY 2000
3601.02
-42.57
0.36
12,102,379
28069
11271
81.6
58.5
65

Last 10 May 19th's data records

DATE MEASURED ELEVATION CUR ELEV vs THEN CONTENT INFLOW (cfs) OUTFLOW (cfs) HIGH TEMP LOW TEMP WATER TEMP
Mon, May 20, 2024
3562.86
-4.41
7,991,311
15139
10131
77.0
60.2
n/a
Sat, May 20, 2023
3545.86
12.59
6,824,777
66217
17755
72.9
59.5
70.0
Fri, May 20, 2022
3527.15
31.30
6,059,498
30090
9899
78.0
61.0
67.0
Thu, May 20, 2021
3560.24
-1.79
8,341,304
10320
10831
87.0
67.0
65.0
Wed, May 20, 2020
3602.36
-43.91
11,976,656
26883
10141
71.0
52.0
64.0
Mon, May 20, 2019
3579.73
-21.28
9,916,423
33436
12128
57.0
42.0
62.0
Sun, May 20, 2018
3610.35
-51.90
12,765,563
18949
9146
84.0
62.0
66.0
Sat, May 20, 2017
3612.87
-54.42
13,021,359
47283
10147
75.0
48.0
61.0
Fri, May 20, 2016
3597.21
-38.76
11,485,837
42037
11957
82.9
66.0
63.0
Wed, May 20, 2015
3592.99
-34.54
11,093,353
28214
11784
61.0
53.0
62.0
Averages of List
3579.62
-21.17
9,984,362
31813
11427
76.7
54.8
64.6


Accessibility of Launch Ramps, Primitive Launches and Other Sites
As of Monday, May 19th, 2025 where elevation was 3558.45'


Click here for NPS update on ramps


SITE/LAUNCH NAME MINIMUM SAFE
ELEVATION
ABSOLUTE MINIMUM
USABLE ELEVATION
CURRENT LEVEL VS.
NPS MIN SAFE
CURRENT LEVEL VS.
ABSOLUTE MINIMUM
CURRENT ACCESSIBILITY
Stateline Auxiliary Ramp
3502.00
3500.00
56.45 Above
58.45 Above
Open and Usable
Bullfrog North Ramp
3529.00
3527.00
29.45 Above
31.45 Above
Open and Usable
Antelope Point Business Ramp
3540.00
3538.00
18.45 Above
20.45 Above
Open and Usable
Wahweap (Main Launch)
3546.00
3544.00
12.45 Above
14.45 Above
Open and Usable
Bullfrog Spur (Boats < 25')
3549.00
3547.00
9.45 Above
11.45 Above
Open and Usable
Halls Crossing (use at own risk)
3556.00
3554.00
2.45 Above
4.45 Above
Open and Usable
Stateline Launch
3564.00
3562.00
5.55 Below
3.55 Below
Unusable, go to main marinas
Bullfrog (Main Launch)
3578.00
3576.00
19.55 Below
17.55 Below
Unusable, go to main marinas
Castle Rock Cut-Off
3583.00
3580.00
24.55 Below
21.55 Below
Unusable, use Main Channel
Antelope Point Public Ramp
3588.00
3586.00
29.55 Below
27.55 Below
Unusable, go to main marinas
Dominguez Butte Cut-Off
3602.00
3600.00
43.55 Below
41.55 Below
Unusable, go to main marinas
Gunsight to Padre Bay Cut-Off
3613.00
3609.00
54.55 Below
50.55 Below
Unusable, go to main marinas
Hite
3650.00
3645.00
91.55 Below
86.55 Below
Unusable, go to main marinas
Farley Canyon
3653.00
3649.00
94.55 Below
90.55 Below
Unusable, go to main marinas
Copper Canyon
3663.00
3660.00
104.55 Below
101.55 Below
Unusable, go to main marinas
Bullfrog to Halls Creek Cut-Off
3670.00
3668.00
111.55 Below
109.55 Below
Unusable, use Main Channel
Piute Farms
3682.00
3680.00
123.55 Below
121.55 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.


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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 5.051 seconds to create!
Copyright Water-Data.com
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 Stevie Kelso and the UT Division of Wildlife Resources
  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
Using Water Year 2000 as start of prolonged drought in SW USA
or go to Lake Powell Source Data
USBR Projected Outlook
Current Snowpack Conditions for Upper Colorado Basin


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Lake Powell, Houseboating, Glen Canyon, Striped Bass