Overview Realtime Historical Map View
Rip Current Statement
2026-09-06T20:00:00-04:00

* WHAT...For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (2.9 to 11.4 feet Mean Lower Low Water). For the High Rip Current Risk, dangerous rip currents expected. * WHERE...Barnstable MA, Dukes MA and Nantucket MA Counties. * WHEN...For the Coastal Flood Advisory, from 5 PM this afternoon to 11 PM EDT this evening. For the High Rip Current Risk, from late tonight through Sunday evening. * IMPACTS...Roads remain passable. Low lying areas and roads near Nantucket Harbor, including Easy Street, may experience pockets of shallow flooding less than one foot deep. Rip currents can sweep even the best swimmers away from shore into deeper water.

Herring River At North Harwich, Ma 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 9.16
01-02 8.87
01-03 8.11
01-04 8.3
01-05 8.35
01-06 8.39
01-07 7.83
01-08 7.77
01-09 7.55
01-10 7.76
01-11 7.93
01-12 7.85
01-13 8.7
01-14 8.91
01-15 9.05
01-16 8.7
01-17 9.52
01-18 9.24
01-19 8.84
01-20 9.29
01-21 9.02
01-22 8.76
01-23 9.59
01-24 9.36
01-25 9.28
01-26 10.64
01-27 10.71
01-28 10.25
01-29 10.16
01-30 9.54
01-31 10.26
02-01 9.75
02-02 9.44
02-03 9.13
02-04 9.16
02-05 10.0
02-06 10.45
02-07 10.96
02-08 11.75
02-09 11.16
02-10 10.86
02-11 10.54
02-12 11.36
02-13 11.19
02-14 11.39
02-15 11.44
02-16 11.17
02-17 10.81
02-18 11.05
02-19 10.79
02-20 11.66
02-21 10.81
02-22 10.41
02-23 10.91
02-24 11.16
02-25 11.72
02-26 11.3
02-27 11.2
02-28 11.96
02-29 11.45
03-01 11.37
03-02 11.47
03-03 12.85
03-04 12.64
03-05 12.33
03-06 12.02
03-07 11.82
03-08 11.64
03-09 14.8
03-10 12.95
03-11 14.3
03-12 13.46
03-13 13.36
03-14 14.15
03-15 14.85
03-16 13.92
03-17 12.79
03-18 12.06
03-19 12.68
03-20 12.64
03-21 13.66
03-22 13.9
03-23 11.91
03-24 13.55
03-25 12.86
03-26 13.43
03-27 12.37
03-28 12.78
03-29 13.43
03-30 13.27
03-31 12.65
04-01 12.94
04-02 13.96
04-03 14.54
04-04 14.72
04-05 14.63
04-06 14.06
04-07 14.04
04-08 13.7
04-09 13.75
04-10 13.35
04-11 12.71
04-12 11.91
04-13 12.32
04-14 12.64
04-15 12.45
04-16 12.35
04-17 13.3
04-18 12.94
04-19 12.68
04-20 12.12
04-21 12.91
04-22 12.53
04-23 12.54
04-24 12.41
04-25 11.72
04-26 12.61
04-27 13.12
04-28 12.8
04-29 12.42
04-30 12.52
05-01 12.92
05-02 14.44
05-03 14.12
05-04 13.67
05-05 13.32
05-06 13.04
05-07 13.38
05-08 12.76
05-09 12.74
05-10 12.62
05-11 12.48
05-12 12.83
05-13 12.96
05-14 11.66
05-15 13.16
05-16 12.26
05-17 12.97
05-18 12.42
05-19 12.05
05-20 12.39
05-21 12.27
05-22 11.38
05-23 12.03
05-24 11.83
05-25 12.47
05-26 12.23
05-27 11.88
05-28 11.64
05-29 11.69
05-30 12.38
05-31 12.31
06-01 11.97
06-02 11.37
06-03 11.22
06-04 11.32
06-05 11.62
06-06 10.95
06-07 10.86
06-08 11.05
06-09 10.74
06-10 10.57
06-11 11.1
06-12 11.35
06-13 11.06
06-14 11.38
06-15 10.85
06-16 10.33
06-17 10.13
06-18 10.24
06-19 10.47
06-20 9.93
06-21 9.64
06-22 10.11
06-23 9.85
06-24 9.89
06-25 9.68
06-26 9.7
06-27 9.96
06-28 10.65
06-29 10.4
06-30 10.36
07-01 9.79
07-02 10.35
07-03 10.37
07-04 10.08
07-05 10.7
07-06 11.03
07-07 9.61
07-08 9.86
07-09 9.99
07-10 9.65
07-11 9.63
07-12 9.51
07-13 8.29
07-14 9.09
07-15 8.65
07-16 8.38
07-17 8.23
07-18 7.43
07-19 7.75
07-20 7.27
07-21 7.05
07-22 7.46
07-23 7.05
07-24 6.9
07-25 6.67
07-26 6.4
07-27 6.75
07-28 6.41
07-29 6.74
07-30 6.34
07-31 6.05
08-01 5.94
08-02 5.83
08-03 5.58
08-04 5.4
08-05 5.59
08-06 5.18
08-07 4.88
08-08 5.53
08-09 5.52
08-10 5.47
08-11 5.47
08-12 5.34
08-13 5.13
08-14 5.12
08-15 4.79
08-16 4.86
08-17 4.63
08-18 4.31
08-19 7.71
08-20 5.25
08-21 4.98
08-22 3.96
08-23 4.46
08-24 4.36
08-25 4.17
08-26 4.02
08-27 3.8
08-28 3.75
08-29 3.72
08-30 3.63
08-31 3.33
09-01 3.37
09-02 3.07
09-03 3.02
09-04 3.26
09-05 3.07
09-06 3.55
09-07 4.48
09-08 4.0
09-09 3.87
09-10 4.2
09-11 4.29
09-12 3.9
09-13 3.66
09-14 3.86
09-15 3.66
09-16 3.58
09-17 3.5
09-18 3.42
09-19 3.63
09-20 3.64
09-21 3.52
09-22 3.72
09-23 3.46
09-24 3.52
09-25 3.58
09-26 3.52
09-27 3.4
09-28 3.29
09-29 3.41
09-30 3.57
10-01 3.81
10-02 4.03
10-03 3.85
10-04 3.27
10-05 3.55
10-06 2.96
10-07 2.89
10-08 2.89
10-09 2.97
10-10 3.42
10-11 3.43
10-12 3.67
10-13 4.06
10-14 3.87
10-15 3.95
10-16 3.52
10-17 4.09
10-18 3.74
10-19 3.43
10-20 3.49
10-21 3.5
10-22 3.88
10-23 4.1
10-24 4.46
10-25 4.16
10-26 3.65
10-27 5.61
10-28 5.39
10-29 5.5
10-30 6.22
10-31 5.29
11-01 6.04
11-02 5.8
11-03 5.22
11-04 5.44
11-05 5.05
11-06 4.53
11-07 4.68
11-08 4.82
11-09 4.87
11-10 4.77
11-11 4.67
11-12 4.8
11-13 4.86
11-14 5.33
11-15 5.03
11-16 5.55
11-17 5.34
11-18 6.06
11-19 5.82
11-20 5.6
11-21 5.33
11-22 5.47
11-23 5.26
11-24 5.41
11-25 5.57
11-26 5.96
11-27 7.01
11-28 6.71
11-29 6.27
11-30 6.01
12-01 6.13
12-02 6.44
12-03 7.19
12-04 6.84
12-05 6.48
12-06 7.25
12-07 7.11
12-08 7.45
12-09 7.32
12-10 9.29
12-11 9.2
12-12 8.66
12-13 8.2
12-14 8.27
12-15 8.71
12-16 8.43
12-17 8.89
12-18 9.5
12-19 9.23
12-20 8.93
12-21 7.33
12-22 7.39
12-23 7.39
12-24 7.88
12-25 7.48
12-26 7.75
12-27 7.52
12-28 7.62
12-29 7.87
12-30 8.45
12-31 8.68

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index