Overview Realtime Historical Map View
High Surf Advisory
2026-09-27T20:00:00-04:00

* WHAT...Large breaking waves of 7 to 12 feet and a high risk of rip currents. * WHERE...In Maine, Coastal York, Coastal Cumberland, Sagadahoc, Lincoln and Knox Counties. In New Hampshire, Coastal Rockingham County. * WHEN...From 8 AM Friday to 8 PM EDT Sunday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion.

Winnicut River At Greenland, Nr Portsmouth, Nh 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 40.64
01-02 35.46
01-03 33.24
01-04 30.18
01-05 34.31
01-06 28.01
01-07 27.17
01-08 24.84
01-09 18.4
01-10 27.44
01-11 64.42
01-12 42.6
01-13 47.44
01-14 54.46
01-15 39.81
01-16 32.44
01-17 33.01
01-18 31.07
01-19 24.93
01-20 26.02
01-21 24.13
01-22 19.19
01-23 17.97
01-24 20.27
01-25 39.15
01-26 52.21
01-27 46.11
01-28 47.31
01-29 37.96
01-30 27.58
01-31 22.24
02-01 22.31
02-02 18.18
02-03 18.61
02-04 20.45
02-05 19.33
02-06 18.69
02-07 19.32
02-08 20.75
02-09 20.63
02-10 19.13
02-11 20.3
02-12 26.64
02-13 26.38
02-14 19.98
02-15 18.18
02-16 19.28
02-17 23.31
02-18 30.45
02-19 23.0
02-20 22.02
02-21 25.9
02-22 21.99
02-23 28.58
02-24 26.55
02-25 35.92
02-26 30.96
02-27 30.48
02-28 35.82
02-29 49.4
03-01 26.16
03-02 27.17
03-03 36.91
03-04 35.2
03-05 29.12
03-06 31.51
03-07 45.71
03-08 45.61
03-09 44.81
03-10 46.67
03-11 59.48
03-12 55.68
03-13 55.12
03-14 53.52
03-15 57.81
03-16 76.0
03-17 66.18
03-18 59.55
03-19 46.61
03-20 42.08
03-21 45.26
03-22 40.92
03-23 40.04
03-24 53.83
03-25 52.59
03-26 46.05
03-27 42.83
03-28 53.14
03-29 69.1
03-30 62.37
03-31 67.69
04-01 63.7
04-02 64.15
04-03 59.08
04-04 72.96
04-05 80.6
04-06 65.81
04-07 67.28
04-08 55.51
04-09 53.09
04-10 52.34
04-11 44.82
04-12 38.94
04-13 39.01
04-14 40.2
04-15 32.31
04-16 31.92
04-17 59.18
04-18 38.48
04-19 31.72
04-20 32.4
04-21 38.23
04-22 36.43
04-23 30.93
04-24 43.12
04-25 30.48
04-26 34.76
04-27 48.26
04-28 38.77
04-29 30.56
04-30 28.96
05-01 49.32
05-02 41.42
05-03 34.63
05-04 32.97
05-05 33.24
05-06 40.68
05-07 35.29
05-08 26.28
05-09 23.22
05-10 26.41
05-11 37.06
05-12 25.28
05-13 20.32
05-14 17.4
05-15 16.31
05-16 17.23
05-17 17.6
05-18 19.85
05-19 15.44
05-20 13.28
05-21 17.43
05-22 12.62
05-23 18.86
05-24 16.73
05-25 18.05
05-26 29.28
05-27 21.7
05-28 16.73
05-29 16.95
05-30 14.97
05-31 19.98
06-01 16.31
06-02 17.24
06-03 30.74
06-04 20.04
06-05 21.44
06-06 24.62
06-07 23.52
06-08 19.97
06-09 18.87
06-10 15.89
06-11 12.5
06-12 20.15
06-13 13.71
06-14 18.59
06-15 14.55
06-16 11.04
06-17 14.31
06-18 16.84
06-19 14.16
06-20 11.33
06-21 9.96
06-22 9.64
06-23 8.55
06-24 7.8
06-25 7.4
06-26 9.77
06-27 11.04
06-28 14.37
06-29 17.96
06-30 14.2
07-01 18.12
07-02 19.12
07-03 27.16
07-04 16.26
07-05 13.64
07-06 11.71
07-07 10.93
07-08 11.12
07-09 11.03
07-10 19.28
07-11 11.91
07-12 11.88
07-13 16.6
07-14 11.23
07-15 9.27
07-16 9.44
07-17 11.71
07-18 7.85
07-19 8.03
07-20 6.48
07-21 6.48
07-22 5.85
07-23 5.16
07-24 7.78
07-25 6.4
07-26 6.26
07-27 9.07
07-28 8.54
07-29 6.18
07-30 8.38
07-31 5.8
08-01 5.86
08-02 5.67
08-03 5.13
08-04 9.39
08-05 5.77
08-06 5.27
08-07 3.96
08-08 8.07
08-09 13.61
08-10 9.36
08-11 7.77
08-12 6.82
08-13 6.53
08-14 14.35
08-15 8.34
08-16 7.23
08-17 6.78
08-18 6.16
08-19 15.13
08-20 11.59
08-21 8.82
08-22 8.61
08-23 12.52
08-24 9.99
08-25 8.53
08-26 7.99
08-27 6.24
08-28 4.37
08-29 4.55
08-30 4.67
08-31 5.52
09-01 3.73
09-02 7.17
09-03 14.53
09-04 8.35
09-05 6.15
09-06 6.31
09-07 7.03
09-08 5.97
09-09 4.82
09-10 4.72
09-11 4.78
09-12 6.62
09-13 7.86
09-14 13.12
09-15 6.24
09-16 5.27
09-17 4.56
09-18 5.41
09-19 37.88
09-20 15.59
09-21 12.15
09-22 10.5
09-23 11.51
09-24 7.86
09-25 7.76
09-26 7.45
09-27 8.26
09-28 7.29
09-29 6.3
09-30 5.33
10-01 8.51
10-02 4.24
10-03 6.31
10-04 6.35
10-05 16.52
10-06 9.18
10-07 4.94
10-08 5.33
10-09 4.71
10-10 4.81
10-11 4.08
10-12 6.53
10-13 6.63
10-14 10.89
10-15 9.24
10-16 9.64
10-17 9.32
10-18 13.82
10-19 14.48
10-20 13.16
10-21 11.68
10-22 18.3
10-23 14.36
10-24 20.11
10-25 14.43
10-26 11.54
10-27 14.34
10-28 22.29
10-29 22.93
10-30 22.13
10-31 60.42
11-01 34.49
11-02 29.35
11-03 29.61
11-04 29.89
11-05 21.82
11-06 23.03
11-07 27.73
11-08 20.71
11-09 16.58
11-10 24.02
11-11 15.93
11-12 16.76
11-13 24.94
11-14 25.27
11-15 16.71
11-16 24.22
11-17 28.39
11-18 24.9
11-19 19.51
11-20 18.85
11-21 20.03
11-22 16.73
11-23 24.16
11-24 23.2
11-25 24.24
11-26 20.53
11-27 30.02
11-28 41.78
11-29 28.61
11-30 24.14
12-01 34.78
12-02 33.79
12-03 32.89
12-04 32.0
12-05 25.76
12-06 36.43
12-07 30.8
12-08 34.33
12-09 30.8
12-10 28.36
12-11 48.53
12-12 42.22
12-13 33.92
12-14 38.87
12-15 48.71
12-16 33.46
12-17 46.47
12-18 44.58
12-19 59.7
12-20 43.7
12-21 37.35
12-22 39.69
12-23 35.31
12-24 45.44
12-25 39.16
12-26 47.71
12-27 34.79
12-28 29.33
12-29 38.34
12-30 37.17
12-31 34.14

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index