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Beach Hazards Statement
2026-07-18T22:00:00-04:00

* WHAT...Dangerous swimming conditions are expected due to high wave action and strong rip currents. * WHERE...Marquette and Alger Counties. * WHEN...From Saturday morning through Saturday evening. * IMPACTS...High wave action and dangerous currents will lead to life threatening swimming conditions. Waves in rapid succession can tire swimmers quickly. * ADDITIONAL DETAILS...Current related fatalities and rescues in the past have occurred due to similar wave conditions at locations listed below: For Marquette County: Middle Bay north of Presque Isle and at Little Presque Isle. For Alger County: The Au Train River mouth at Au Train, the exposed regions of Grand Marais Harbor, and Pictured Rocks National Lakeshore.

Greenwood Diversion Near Greenwood, Mi Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 10.9
01-02 10.91
01-03 10.91
01-04 10.99
01-05 11.01
01-06 10.98
01-07 10.98
01-08 10.98
01-09 11.03
01-10 10.95
01-11 11.1
01-12 11.19
01-13 11.18
01-14 11.17
01-15 11.17
01-16 11.17
01-17 10.89
01-18 10.88
01-19 10.72
01-20 10.72
01-21 10.58
01-22 10.58
01-23 9.95
01-24 10.5
01-25 10.42
01-26 10.8
01-27 10.79
01-28 10.49
01-29 10.49
01-30 10.29
01-31 10.22
02-01 10.16
02-02 10.16
02-03 10.35
02-04 10.49
02-05 10.28
02-06 10.54
02-07 10.4
02-08 10.4
02-09 10.2
02-10 10.17
02-11 10.33
02-12 10.4
02-13 10.17
02-14 10.17
02-15 10.17
02-16 10.17
02-17 10.43
02-18 10.41
02-19 9.73
02-20 9.96
02-21 9.84
02-22 9.84
02-23 9.85
02-24 9.84
02-25 9.87
02-26 10.38
02-27 9.74
02-28 9.75
02-29 12.92
03-01 10.03
03-02 10.12
03-03 9.96
03-04 9.94
03-05 9.95
03-06 9.34
03-07 9.71
03-08 9.59
03-09 8.54
03-10 8.3
03-11 8.52
03-12 8.37
03-13 8.35
03-14 8.57
03-15 8.57
03-16 8.71
03-17 8.75
03-18 8.98
03-19 8.97
03-20 9.02
03-21 8.94
03-22 9.01
03-23 8.98
03-24 9.1
03-25 9.3
03-26 9.32
03-27 9.34
03-28 9.24
03-29 8.78
03-30 8.74
03-31 8.85
04-01 8.85
04-02 8.8
04-03 8.81
04-04 8.22
04-05 8.58
04-06 9.15
04-07 9.09
04-08 8.73
04-09 8.65
04-10 8.91
04-11 8.78
04-12 9.05
04-13 9.05
04-14 9.37
04-15 9.4
04-16 9.4
04-17 8.62
04-18 9.35
04-19 9.35
04-20 9.33
04-21 9.3
04-22 9.32
04-23 9.33
04-24 9.31
04-25 9.37
04-26 9.23
04-27 9.19
04-28 9.16
04-29 9.07
04-30 9.09
05-01 8.99
05-02 8.94
05-03 9.05
05-04 8.84
05-05 8.8
05-06 8.84
05-07 8.74
05-08 8.74
05-09 8.74
05-10 9.13
05-11 9.16
05-12 9.12
05-13 8.72
05-14 8.93
05-15 8.89
05-16 8.96
05-17 9.21
05-18 9.16
05-19 9.48
05-20 9.43
05-21 9.28
05-22 9.29
05-23 9.4
05-24 9.31
05-25 9.3
05-26 9.47
05-27 9.56
05-28 9.77
05-29 10.13
05-30 10.44
05-31 10.41
06-01 10.4
06-02 10.56
06-03 11.04
06-04 11.08
06-05 10.55
06-06 10.57
06-07 10.97
06-08 11.77
06-09 11.84
06-10 12.13
06-11 11.54
06-12 11.96
06-13 11.95
06-14 12.21
06-15 11.55
06-16 11.55
06-17 11.64
06-18 11.77
06-19 11.41
06-20 11.16
06-21 11.44
06-22 10.56
06-23 10.27
06-24 10.39
06-25 11.17
06-26 10.8
06-27 10.79
06-28 11.02
06-29 11.03
06-30 11.44
07-01 11.89
07-02 12.42
07-03 12.7
07-04 12.7
07-05 13.1
07-06 13.39
07-07 12.97
07-08 13.16
07-09 12.98
07-10 13.9
07-11 14.26
07-12 14.57
07-13 14.63
07-14 14.55
07-15 14.61
07-16 14.21
07-17 14.31
07-18 13.99
07-19 14.23
07-20 14.22
07-21 14.39
07-22 14.27
07-23 13.99
07-24 14.63
07-25 14.59
07-26 14.4
07-27 14.4
07-28 14.69
07-29 14.61
07-30 14.52
07-31 14.23
08-01 14.97
08-02 13.52
08-03 13.51
08-04 13.72
08-05 14.04
08-06 14.45
08-07 14.82
08-08 15.42
08-09 15.79
08-10 16.0
08-11 15.47
08-12 15.55
08-13 15.77
08-14 16.07
08-15 16.07
08-16 16.14
08-17 16.14
08-18 16.83
08-19 16.43
08-20 16.73
08-21 16.52
08-22 17.46
08-23 15.89
08-24 15.12
08-25 14.97
08-26 15.13
08-27 15.88
08-28 15.73
08-29 15.65
08-30 15.77
08-31 17.01
09-01 17.14
09-02 16.55
09-03 16.66
09-04 16.67
09-05 16.61
09-06 16.84
09-07 17.33
09-08 17.82
09-09 17.12
09-10 16.53
09-11 16.23
09-12 16.22
09-13 15.87
09-14 15.99
09-15 16.07
09-16 16.05
09-17 16.23
09-18 16.46
09-19 16.24
09-20 16.27
09-21 16.13
09-22 16.25
09-23 16.64
09-24 16.87
09-25 16.8
09-26 16.98
09-27 16.77
09-28 16.78
09-29 16.78
09-30 16.58
10-01 17.04
10-02 16.99
10-03 16.68
10-04 16.55
10-05 15.87
10-06 15.79
10-07 15.73
10-08 15.67
10-09 15.84
10-10 15.83
10-11 15.89
10-12 15.76
10-13 15.59
10-14 15.53
10-15 15.67
10-16 15.86
10-17 15.94
10-18 15.9
10-19 16.51
10-20 15.43
10-21 16.3
10-22 15.68
10-23 15.67
10-24 15.08
10-25 15.22
10-26 14.52
10-27 14.23
10-28 14.1
10-29 14.23
10-30 13.95
10-31 13.87
11-01 14.12
11-02 14.15
11-03 14.22
11-04 14.19
11-05 14.12
11-06 14.61
11-07 14.43
11-08 14.42
11-09 14.21
11-10 14.09
11-11 14.09
11-12 13.93
11-13 13.86
11-14 13.45
11-15 13.43
11-16 13.21
11-17 13.2
11-18 12.37
11-19 12.35
11-20 11.41
11-21 13.16
11-22 13.41
11-23 12.91
11-24 12.89
11-25 12.83
11-26 12.42
11-27 12.71
11-28 12.64
11-29 11.46
11-30 12.31
12-01 12.09
12-02 12.09
12-03 12.16
12-04 11.93
12-05 11.94
12-06 12.4
12-07 11.75
12-08 11.78
12-09 11.66
12-10 11.54
12-11 11.54
12-12 11.53
12-13 11.43
12-14 11.18
12-15 10.59
12-16 10.29
12-17 10.39
12-18 10.56
12-19 10.41
12-20 10.81
12-21 11.13
12-22 10.5
12-23 10.34
12-24 10.2
12-25 10.2
12-26 10.08
12-27 10.58
12-28 10.49
12-29 10.82
12-30 10.59
12-31 10.87

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index