Overview Realtime Historical Map View
Coastal Flood Advisory
2026-07-13T05:00:00-04:00

* WHAT...Up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE...Shoreline in Charles and King George Counties. * WHEN...Until 5 AM EDT Monday, especially around the time of high tide. * IMPACTS...At 3.5 feet, water reaches yards near Cobb Island and docks near Dahlgren. * ADDITIONAL DETAILS...Tides one to one and a half feet above normal. The next high tide at Goose Bay is at 3:10 AM. The next high tide at Dahlgren is at 2:13 AM.

Mattawoman Creek Near Pomonkey, Md 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 63.49
01-02 91.79
01-03 90.93
01-04 83.58
01-05 77.33
01-06 71.74
01-07 77.38
01-08 70.6
01-09 53.8
01-10 182.21
01-11 198.07
01-12 105.63
01-13 130.28
01-14 92.79
01-15 66.58
01-16 59.36
01-17 80.22
01-18 94.33
01-19 84.76
01-20 73.13
01-21 84.71
01-22 49.76
01-23 43.68
01-24 44.88
01-25 96.93
01-26 106.79
01-27 67.37
01-28 62.4
01-29 119.85
01-30 70.08
01-31 46.2
02-01 70.6
02-02 75.08
02-03 66.71
02-04 98.68
02-05 142.37
02-06 77.16
02-07 90.33
02-08 111.87
02-09 77.61
02-10 57.92
02-11 76.52
02-12 221.92
02-13 145.04
02-14 131.5
02-15 92.58
02-16 94.6
02-17 152.47
02-18 117.59
02-19 90.54
02-20 93.02
02-21 106.58
02-22 97.56
02-23 102.59
02-24 114.64
02-25 165.12
02-26 108.52
02-27 71.41
02-28 79.32
02-29 58.67
03-01 103.37
03-02 114.56
03-03 103.93
03-04 98.06
03-05 89.63
03-06 102.7
03-07 114.38
03-08 112.76
03-09 83.09
03-10 92.04
03-11 79.41
03-12 63.29
03-13 88.97
03-14 76.86
03-15 60.86
03-16 50.4
03-17 46.54
03-18 67.11
03-19 82.32
03-20 72.59
03-21 84.87
03-22 135.16
03-23 92.09
03-24 99.4
03-25 98.93
03-26 77.91
03-27 61.07
03-28 77.74
03-29 77.44
03-30 63.33
03-31 86.2
04-01 113.19
04-02 98.57
04-03 60.45
04-04 69.63
04-05 71.03
04-06 54.75
04-07 102.13
04-08 105.36
04-09 85.62
04-10 61.33
04-11 44.1
04-12 58.89
04-13 96.19
04-14 87.54
04-15 83.92
04-16 101.73
04-17 100.92
04-18 53.18
04-19 60.8
04-20 70.76
04-21 86.36
04-22 64.44
04-23 42.73
04-24 40.05
04-25 55.2
04-26 78.6
04-27 59.98
04-28 37.85
04-29 48.03
04-30 62.72
05-01 144.46
05-02 107.9
05-03 74.8
05-04 59.8
05-05 89.08
05-06 94.38
05-07 93.91
05-08 112.52
05-09 69.5
05-10 40.98
05-11 31.37
05-12 49.22
05-13 50.33
05-14 81.94
05-15 52.8
05-16 47.86
05-17 90.61
05-18 68.7
05-19 91.34
05-20 101.85
05-21 42.1
05-22 42.21
05-23 54.12
05-24 78.61
05-25 35.59
05-26 33.27
05-27 23.45
05-28 27.16
05-29 42.82
05-30 44.07
05-31 37.65
06-01 25.91
06-02 20.82
06-03 34.6
06-04 78.66
06-05 71.64
06-06 30.27
06-07 18.75
06-08 38.88
06-09 37.66
06-10 20.0
06-11 62.69
06-12 93.14
06-13 32.66
06-14 39.49
06-15 18.53
06-16 37.57
06-17 31.89
06-18 21.77
06-19 31.71
06-20 48.1
06-21 57.42
06-22 52.4
06-23 23.8
06-24 25.47
06-25 15.03
06-26 12.42
06-27 25.56
06-28 41.95
06-29 31.7
06-30 41.32
07-01 13.64
07-02 22.21
07-03 34.75
07-04 16.02
07-05 19.3
07-06 16.85
07-07 46.21
07-08 137.87
07-09 242.69
07-10 83.8
07-11 32.16
07-12 42.93
07-13 43.71
07-14 42.47
07-15 36.96
07-16 26.69
07-17 27.22
07-18 13.94
07-19 16.15
07-20 19.05
07-21 11.17
07-22 94.59
07-23 117.44
07-24 130.57
07-25 63.03
07-26 31.8
07-27 18.08
07-28 15.18
07-29 18.94
07-30 89.02
07-31 42.97
08-01 52.35
08-02 23.16
08-03 40.13
08-04 66.78
08-05 470.65
08-06 142.97
08-07 51.28
08-08 46.47
08-09 30.86
08-10 17.42
08-11 66.84
08-12 199.38
08-13 195.43
08-14 305.32
08-15 111.88
08-16 70.93
08-17 85.29
08-18 47.25
08-19 33.67
08-20 18.28
08-21 32.15
08-22 34.12
08-23 30.21
08-24 14.92
08-25 10.94
08-26 7.58
08-27 6.79
08-28 70.89
08-29 158.15
08-30 215.37
08-31 106.76
09-01 38.66
09-02 78.39
09-03 46.88
09-04 25.18
09-05 27.68
09-06 30.5
09-07 94.37
09-08 231.12
09-09 212.04
09-10 198.88
09-11 134.43
09-12 123.21
09-13 50.17
09-14 31.56
09-15 22.14
09-16 17.15
09-17 14.56
09-18 18.06
09-19 22.29
09-20 16.88
09-21 16.75
09-22 14.98
09-23 13.21
09-24 147.7
09-25 130.53
09-26 69.48
09-27 57.38
09-28 55.27
09-29 85.89
09-30 94.92
10-01 69.3
10-02 51.04
10-03 66.08
10-04 34.24
10-05 27.63
10-06 24.88
10-07 17.84
10-08 13.98
10-09 12.73
10-10 31.04
10-11 24.97
10-12 207.1
10-13 218.79
10-14 66.77
10-15 44.29
10-16 30.08
10-17 27.72
10-18 21.04
10-19 15.54
10-20 16.44
10-21 24.11
10-22 16.66
10-23 15.39
10-24 15.88
10-25 11.66
10-26 38.88
10-27 44.28
10-28 79.1
10-29 33.39
10-30 164.78
10-31 187.59
11-01 75.39
11-02 58.75
11-03 50.65
11-04 44.12
11-05 18.81
11-06 75.25
11-07 96.89
11-08 45.51
11-09 28.41
11-10 28.65
11-11 25.81
11-12 63.23
11-13 103.91
11-14 81.12
11-15 38.51
11-16 63.63
11-17 90.35
11-18 55.86
11-19 29.58
11-20 23.11
11-21 19.86
11-22 22.17
11-23 36.28
11-24 44.3
11-25 63.75
11-26 53.75
11-27 44.6
11-28 61.09
11-29 42.99
11-30 29.8
12-01 80.63
12-02 50.17
12-03 44.28
12-04 39.95
12-05 36.67
12-06 85.79
12-07 51.03
12-08 137.89
12-09 97.58
12-10 87.91
12-11 79.26
12-12 120.71
12-13 59.73
12-14 37.98
12-15 67.01
12-16 158.01
12-17 178.92
12-18 133.09
12-19 195.47
12-20 62.85
12-21 49.76
12-22 66.15
12-23 61.44
12-24 82.82
12-25 106.26
12-26 87.53
12-27 79.37
12-28 121.97
12-29 181.74
12-30 131.52
12-31 91.35

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index