Lake Powell Water Database


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powell
The earliest data is from Monday, March 11th, 1963
The most recent data is from Tuesday, September 30th, 2025

Water Data for 20 days surrounding May 20, 1966

DATE MEASURED ELEVATION CHANGE CONTENT INFLOW OUTFLOW HIGH TEMP LOW TEMP WATER TEMP
Mon, May 30, 1966
3544.53
0.14
7,430,916
23331
15200
93.0
62.0
--
Sun, May 29, 1966
3544.39
0.16
7,420,866
22792
15600
95.0
62.0
--
Sat, May 28, 1966
3544.23
0.11
7,409,398
22645
16500
93.0
64.0
--
Fri, May 27, 1966
3544.12
0.08
7,401,519
22763
17700
92.0
59.0
--
Thu, May 26, 1966
3544.04
0.09
7,395,777
22331
17800
93.0
70.0
--
Wed, May 25, 1966
3543.95
0.15
7,389,361
21910
16100
92.0
61.0
--
Tue, May 24, 1966
3543.80
0.14
7,378,747
21929
13400
88.0
61.0
--
Mon, May 23, 1966
3543.66
0.16
7,368,824
21125
15100
87.0
62.0
--
Sun, May 22, 1966
3543.50
0.04
7,357,500
18841
16800
88.0
58.0
--
Sat, May 21, 1966
3543.46
0.04
7,354,665
18410
17800
89.0
63.0
--
Fri, May 20, 1966
3543.42
-0.07
7,351,830
19400
17100
94.0
62.0
--
Thu, May 19, 1966
3543.49
0.03
7,356,792
21459
16500
88.0
60.0
--
Wed, May 18, 1966
3543.46
0.00
7,354,665
24086
17100
89.0
64.0
--
Tue, May 17, 1966
3543.46
0.30
7,354,665
25664
13000
89.0
57.0
--
Mon, May 16, 1966
3543.16
0.24
7,333,419
28291
15000
86.0
60.0
--
Sun, May 15, 1966
3542.92
0.40
7,316,425
29242
13600
85.0
60.0
--
Sat, May 14, 1966
3542.52
0.43
7,288,108
30340
14000
86.0
56.0
--
Fri, May 13, 1966
3542.09
0.52
7,257,665
32350
14000
78.0
50.0
--
Thu, May 12, 1966
3541.57
0.46
7,221,293
33320
14600
68.0
43.0
--
Wed, May 11, 1966
3541.11
0.60
7,189,205
32605
13800
73.0
50.0
--
Tue, May 10, 1966
3540.51
0.44
7,147,341
30821
15600
79.0
54.0
--
Averages of List
3543.21
0.21
7,337,094
24936
15538
86.9
59
--


Averages for May 20th

AVERAGE TYPE ELEVATION CHANGE CONTENT INFLOW OUTFLOW HIGH TEMP LOW TEMP WATER TEMP
Since Filled
3628.78
0.35
15,284,372
31743
14259
82.6
56.9
65
All-Time
3617.94
0.37
14,456,699
31470
13630
72.5
48.6
62.4


All Lake Powell water data for May 20th

DATE MEASURED ELEVATION CONTENT INFLOW OUTFLOW HIGH TEMP LOW TEMP WATER TEMP
Tue May 20, 2025
3558.54
7,683,698
13462
9739
77.9
41.1
--
Mon May 20, 2024
3562.86
7,991,311
15139
10131
77.0
60.2
--
Sat May 20, 2023
3545.86
6,824,777
66217
17755
72.9
59.5
70.0
Fri May 20, 2022
3527.15
6,059,498
30090
9899
78.0
61.0
67.0
Thu May 20, 2021
3560.24
8,341,304
10320
10831
87.0
67.0
65.0
Wed May 20, 2020
3602.36
11,976,656
26883
10141
71.0
52.0
64.0
Mon May 20, 2019
3579.73
9,916,423
33436
12128
57.0
42.0
62.0
Sun May 20, 2018
3610.35
12,765,563
18949
9146
84.0
62.0
66.0
Sat May 20, 2017
3612.87
13,021,359
47283
10147
75.0
48.0
61.0
Fri May 20, 2016
3597.21
11,485,837
42037
11957
82.9
66.0
63.0
Wed May 20, 2015
3592.99
11,093,353
28214
11784
61.0
53.0
62.0
Tue May 20, 2014
3583.17
10,213,541
16575
8120
84.0
61.0
62.0
Mon May 20, 2013
3596.94
11,460,466
25839
10595
75.9
54.0
64.0
Sun May 20, 2012
3635.98
15,533,387
10328
8501
88.0
57.9
68.0
Fri May 20, 2011
3617.54
13,504,245
42957
22420
68.0
45.0
60.0
Thu May 20, 2010
3622.31
14,009,548
18655
9840
84.9
53.1
61.0
Wed May 20, 2009
3620.80
13,848,172
48331
10354
88.0
64.9
68.0
Tue May 20, 2008
3601.84
11,926,488
34758
13168
97.0
66.9
67.0
Sun May 20, 2007
3605.84
12,316,132
29750
9032
88.0
63.0
68.0
Sat May 20, 2006
3598.90
11,645,434
26689
9518
91.0
66.0
71.0
Fri May 20, 2005
3572.27
9,291,800
38275
10348
93.9
62.1
67.0
Thu May 20, 2004
3585.44
10,412,750
17778
10297
86.0
66.9
64.0
Tue May 20, 2003
3605.41
12,273,824
14114
11307
86.0
55.9
62.0
Mon May 20, 2002
3644.52
16,543,232
6584
10018
88.0
62.1
64.0
Sun May 20, 2001
3665.81
19,265,572
32870
7380
88.0
54.0
70.0
Sat May 20, 2000
3677.10
20,838,794
19644
16957
88.0
59.0
--
Thu May 20, 1999
3679.11
21,128,738
21764
19103
87.0
52.0
--
Wed May 20, 1998
3684.42
21,909,198
39819
16200
92.0
58.0
--
Tue May 20, 1997
3671.48
20,043,904
60729
21000
88.0
56.0
--
Mon May 20, 1996
3677.00
20,824,434
50406
17700
91.0
57.0
--
Sat May 20, 1995
3652.14
17,483,554
41603
8870
85.0
58.0
--
Fri May 20, 1994
3657.26
18,136,344
30261
10800
77.0
48.0
--
Thu May 20, 1993
3634.53
15,366,383
65934
10000
90.0
63.0
--
Wed May 20, 1992
3626.17
14,428,691
24429
10000
76.0
58.0
--
Mon May 20, 1991
3628.94
14,734,803
21831
13800
86.0
53.0
--
Sun May 20, 1990
3648.80
17,067,206
8538
4020
84.0
53.0
--
Sat May 20, 1989
3677.10
20,838,414
14773
6750
90.0
58.0
--
Fri May 20, 1988
3685.63
22,090,482
24880
8380
82.0
51.0
--
Wed May 20, 1987
3691.86
23,038,456
49789
11300
82.0
56.0
--
Tue May 20, 1986
3684.09
21,860,424
43810
52200
n/a
n/a
--
Mon May 20, 1985
3693.90
23,355,384
49182
44100
82.0
57.0
--
Sun May 20, 1984
3679.26
21,181,964
95824
45000
96.0
56.0
--
Fri May 20, 1983
3690.60
22,908,474
37477
25100
72.0
45.0
--
Thu May 20, 1982
3671.53
20,142,112
24155
13500
80.0
55.0
--
Wed May 20, 1981
3677.46
21,014,600
8041
12300
75.0
68.0
--
Tue May 20, 1980
3686.76
22,419,174
45319
12800
86.0
55.0
--
Sun May 20, 1979
3654.93
18,005,924
37938
6180
n/a
n/a
--
Sat May 20, 1978
3630.99
15,133,529
35555
6840
85.0
58.0
--
Fri May 20, 1977
3653.49
17,877,042
8266
2060
75.0
49.0
--
Thu May 20, 1976
3665.60
19,504,642
29213
20100
82.0
56.0
--
Tue May 20, 1975
3650.50
17,552,072
37908
12100
84.0
43.0
--
Mon May 20, 1974
3659.35
18,724,426
40163
11000
69.0
43.0
--
Sun May 20, 1973
3605.20
12,491,195
60935
11600
89.0
62.0
--
Sat May 20, 1972
3610.24
13,022,778
16626
7840
87.0
69.0
--
Thu May 20, 1971
3606.53
12,664,866
32291
14900
83.0
48.0
--
Wed May 20, 1970
3572.50
9,544,929
42339
17900
90.0
59.0
--
Tue May 20, 1969
3563.38
8,814,431
38477
13300
94.0
56.0
--
Mon May 20, 1968
3517.83
5,652,091
21606
14600
93.0
60.0
--
Sat May 20, 1967
3502.42
4,768,937
11166
18200
84.0
67.0
--
Fri May 20, 1966
3543.42
7,351,830
19400
17100
94.0
62.0
--
Thu May 20, 1965
3492.31
4,239,859
31360
28500
90.0
64.0
--
Wed May 20, 1964
3401.70
750,899
25782
1000
96.0
61.0
--
Mon May 20, 1963
19851
1040
94.0
66.0
--



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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 - Acre Feet per day
Outflow - Acre Feet per day
All Temps - Degrees Farhenheit
The Water Year runs from October 1 to September 30 of the next year
Acre Feet = * Flow CFS
TP = Total Precipitation



Page took 2.519 seconds to create!
Copyright Summit Technologies, Inc.
Water data courtesy of US Bureau of Reclamation
*Air temp data is sourced from (Prev 24 Hr Extremes):    Weather
Weather forecast for
All data is provisional and subject to review and modification
USBR Source Data


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1999 - 2025


powell Water Database