Overview Realtime Historical Map View
Flood Watch
2026-08-05T16:00:00-04:00

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northern Maryland, including the following areas, Southeast Harford and Southern Baltimore. * WHEN...Until 4 PM EDT this afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Showers and a few thunderstorms with very heavy rain are likely through this afternoon. Rainfall rates of 1 to 2 inches per hour may result in localized totals of 2 to 3 inches, which would result in flooding mainly in urban and poor drainage areas. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information.

East Branch Herbert Run At Arbutus, 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 2.96
01-02 3.08
01-03 1.54
01-04 4.42
01-05 1.84
01-06 1.68
01-07 2.12
01-08 1.52
01-09 1.54
01-10 5.93
01-11 2.94
01-12 6.25
01-13 4.5
01-14 1.75
01-15 3.55
01-16 7.86
01-17 6.21
01-18 1.52
01-19 1.77
01-20 7.31
01-21 1.56
01-22 1.34
01-23 1.86
01-24 6.29
01-25 2.82
01-26 3.09
01-27 1.74
01-28 2.54
01-29 2.03
01-30 1.54
01-31 11.4
02-01 2.67
02-02 2.28
02-03 1.75
02-04 3.57
02-05 2.68
02-06 2.86
02-07 2.62
02-08 1.78
02-09 1.79
02-10 1.58
02-11 2.55
02-12 2.72
02-13 5.26
02-14 4.88
02-15 2.48
02-16 8.77
02-17 2.84
02-18 5.01
02-19 2.09
02-20 2.49
02-21 2.67
02-22 2.17
02-23 4.72
02-24 2.94
02-25 6.23
02-26 2.09
02-27 5.56
02-28 2.21
02-29 2.06
03-01 4.98
03-02 5.36
03-03 3.86
03-04 4.45
03-05 4.53
03-06 2.78
03-07 3.32
03-08 2.05
03-09 1.94
03-10 9.88
03-11 3.32
03-12 1.95
03-13 2.31
03-14 3.18
03-15 2.66
03-16 2.25
03-17 3.74
03-18 1.72
03-19 4.41
03-20 1.86
03-21 2.67
03-22 7.83
03-23 2.04
03-24 4.44
03-25 2.82
03-26 2.1
03-27 2.05
03-28 2.59
03-29 2.07
03-30 2.61
03-31 3.45
04-01 5.19
04-02 2.59
04-03 2.5
04-04 2.73
04-05 1.99
04-06 5.1
04-07 2.05
04-08 2.13
04-09 2.36
04-10 8.19
04-11 1.47
04-12 2.61
04-13 3.33
04-14 1.76
04-15 6.57
04-16 3.35
04-17 1.6
04-18 1.36
04-19 2.46
04-20 6.0
04-21 1.68
04-22 1.33
04-23 2.84
04-24 3.11
04-25 8.58
04-26 3.66
04-27 1.61
04-28 1.28
04-29 3.84
04-30 8.16
05-01 5.21
05-02 2.86
05-03 2.07
05-04 9.66
05-05 1.99
05-06 1.77
05-07 10.25
05-08 2.12
05-09 2.07
05-10 1.67
05-11 9.04
05-12 3.08
05-13 2.96
05-14 32.74
05-15 3.06
05-16 3.6
05-17 5.04
05-18 2.1
05-19 29.45
05-20 2.33
05-21 1.84
05-22 2.12
05-23 3.08
05-24 7.22
05-25 2.19
05-26 1.5
05-27 1.48
05-28 3.4
05-29 6.99
05-30 2.81
05-31 3.06
06-01 1.27
06-02 5.33
06-03 1.63
06-04 2.19
06-05 5.22
06-06 1.52
06-07 1.39
06-08 1.69
06-09 13.89
06-10 2.25
06-11 6.73
06-12 2.3
06-13 2.15
06-14 2.06
06-15 3.0
06-16 3.03
06-17 2.38
06-18 3.34
06-19 35.49
06-20 1.96
06-21 2.68
06-22 1.62
06-23 3.12
06-24 1.78
06-25 1.0
06-26 3.34
06-27 1.49
06-28 2.0
06-29 1.16
06-30 2.57
07-01 2.1
07-02 2.2
07-03 2.57
07-04 1.78
07-05 1.46
07-06 1.48
07-07 7.8
07-08 3.25
07-09 2.32
07-10 1.59
07-11 20.01
07-12 1.12
07-13 1.39
07-14 3.96
07-15 1.59
07-16 1.88
07-17 1.47
07-18 1.12
07-19 1.61
07-20 3.84
07-21 1.25
07-22 7.47
07-23 13.24
07-24 6.38
07-25 144.91
07-26 1.96
07-27 1.59
07-28 2.17
07-29 41.91
07-30 1.64
07-31 2.32
08-01 1.28
08-02 3.06
08-03 1.27
08-04 3.36
08-05 1.58
08-06 1.4
08-07 2.53
08-08 1.75
08-09 0.98
08-10 1.21
08-11 1.21
08-12 2.84
08-13 9.93
08-14 1.84
08-15 2.65
08-16 3.98
08-17 1.29
08-18 2.94
08-19 1.28
08-20 0.97
08-21 1.77
08-22 5.1
08-23 1.7
08-24 1.05
08-25 1.5
08-26 0.96
08-27 1.49
08-28 18.45
08-29 1.63
08-30 1.04
08-31 0.96
09-01 3.16
09-02 1.54
09-03 1.96
09-04 1.02
09-05 0.8
09-06 3.27
09-07 2.05
09-08 33.86
09-09 15.15
09-10 2.16
09-11 2.21
09-12 2.3
09-13 3.11
09-14 1.16
09-15 1.03
09-16 0.95
09-17 1.01
09-18 83.72
09-19 2.46
09-20 1.04
09-21 0.9
09-22 2.33
09-23 0.97
09-24 3.93
09-25 1.73
09-26 1.7
09-27 1.56
09-28 12.49
09-29 2.25
09-30 7.55
10-01 8.29
10-02 1.67
10-03 2.59
10-04 2.67
10-05 1.74
10-06 0.95
10-07 0.91
10-08 2.24
10-09 0.88
10-10 1.09
10-11 9.74
10-12 5.84
10-13 2.28
10-14 1.77
10-15 1.54
10-16 1.55
10-17 1.02
10-18 0.94
10-19 0.76
10-20 2.16
10-21 1.09
10-22 3.35
10-23 1.2
10-24 1.09
10-25 0.93
10-26 3.21
10-27 4.88
10-28 1.15
10-29 1.94
10-30 23.45
10-31 2.98
11-01 2.4
11-02 1.19
11-03 2.39
11-04 1.09
11-05 1.67
11-06 1.76
11-07 1.55
11-08 3.5
11-09 1.12
11-10 4.82
11-11 1.46
11-12 7.01
11-13 6.42
11-14 1.41
11-15 1.11
11-16 6.06
11-17 1.7
11-18 1.48
11-19 2.38
11-20 1.18
11-21 1.24
11-22 5.31
11-23 2.28
11-24 7.52
11-25 2.23
11-26 1.55
11-27 16.12
11-28 1.54
11-29 1.74
11-30 1.25
12-01 2.48
12-02 2.68
12-03 2.47
12-04 1.3
12-05 2.75
12-06 1.21
12-07 4.9
12-08 7.53
12-09 2.76
12-10 2.19
12-11 5.76
12-12 1.32
12-13 1.69
12-14 2.06
12-15 5.49
12-16 14.5
12-17 5.68
12-18 28.36
12-19 1.7
12-20 1.28
12-21 29.19
12-22 1.91
12-23 14.51
12-24 2.7
12-25 8.01
12-26 2.7
12-27 5.52
12-28 3.19
12-29 2.11
12-30 2.67
12-31 1.65

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index