Overview Realtime Historical Map View
Flood Watch
2026-07-22T02:00:00-04:00

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of northern Delaware, including the following area, New Castle, New Jersey, including the following areas, Camden, Eastern Monmouth, Gloucester, Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington, Somerset and Western Monmouth, and southeast Pennsylvania, including the following areas, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, Philadelphia, Upper Bucks, Western Chester and Western Montgomery. * WHEN...Through late tonight. * 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 thunderstorms will increase today into tonight, with the most widespread activity occurring this afternoon and this evening. Some heavy showers and thunderstorms will produce torrential rainfall, with 2 to 3 inches of rain per hour possible. The excessive rainfall within a short period of time, especially in urban areas, could lead to flash flooding. - http://www.weather.gov/safety/flood

Valley Creek At Pa Turnpike Br Near Valley Forge 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 58.21
01-02 62.71
01-03 32.53
01-04 37.0
01-05 31.74
01-06 32.23
01-07 45.08
01-08 31.55
01-09 31.96
01-10 117.87
01-11 42.35
01-12 45.02
01-13 48.74
01-14 32.69
01-15 32.23
01-16 31.87
01-17 62.35
01-18 30.71
01-19 33.68
01-20 65.9
01-21 31.15
01-22 29.64
01-23 36.05
01-24 47.05
01-25 44.26
01-26 86.97
01-27 35.42
01-28 31.78
01-29 33.04
01-30 30.13
01-31 32.08
02-01 30.88
02-02 30.25
02-03 30.48
02-04 45.98
02-05 40.15
02-06 38.27
02-07 34.32
02-08 33.56
02-09 32.81
02-10 29.18
02-11 32.13
02-12 31.2
02-13 33.61
02-14 32.39
02-15 30.18
02-16 38.44
02-17 37.32
02-18 33.31
02-19 29.78
02-20 31.72
02-21 30.54
02-22 38.05
02-23 35.54
02-24 34.61
02-25 92.22
02-26 33.42
02-27 34.66
02-28 35.67
02-29 35.88
03-01 43.43
03-02 44.94
03-03 39.08
03-04 49.92
03-05 48.54
03-06 39.71
03-07 36.22
03-08 32.03
03-09 33.76
03-10 56.29
03-11 57.84
03-12 36.21
03-13 44.08
03-14 32.83
03-15 35.63
03-16 33.4
03-17 38.32
03-18 31.05
03-19 37.41
03-20 43.34
03-21 34.87
03-22 42.3
03-23 32.69
03-24 41.05
03-25 48.2
03-26 34.02
03-27 36.48
03-28 32.94
03-29 43.7
03-30 51.21
03-31 48.72
04-01 68.55
04-02 35.79
04-03 36.93
04-04 59.53
04-05 36.47
04-06 33.89
04-07 36.05
04-08 62.49
04-09 36.78
04-10 34.03
04-11 33.93
04-12 41.38
04-13 33.8
04-14 34.24
04-15 32.62
04-16 43.72
04-17 33.26
04-18 30.37
04-19 84.87
04-20 58.74
04-21 31.22
04-22 36.73
04-23 77.92
04-24 33.68
04-25 29.6
04-26 37.09
04-27 34.21
04-28 29.13
04-29 37.65
04-30 36.89
05-01 133.35
05-02 40.84
05-03 38.81
05-04 43.69
05-05 31.25
05-06 36.25
05-07 41.47
05-08 37.57
05-09 41.62
05-10 30.87
05-11 37.2
05-12 30.73
05-13 32.19
05-14 46.63
05-15 30.75
05-16 46.5
05-17 37.87
05-18 30.36
05-19 30.11
05-20 30.13
05-21 30.37
05-22 36.71
05-23 33.12
05-24 41.25
05-25 29.25
05-26 34.54
05-27 29.1
05-28 31.8
05-29 51.79
05-30 40.35
05-31 53.51
06-01 27.14
06-02 37.0
06-03 28.33
06-04 41.38
06-05 31.01
06-06 36.01
06-07 26.97
06-08 48.75
06-09 43.9
06-10 32.67
06-11 136.0
06-12 31.86
06-13 36.09
06-14 29.81
06-15 43.62
06-16 26.63
06-17 29.29
06-18 27.09
06-19 28.34
06-20 32.39
06-21 34.29
06-22 28.69
06-23 27.09
06-24 31.89
06-25 25.37
06-26 36.89
06-27 146.48
06-28 37.9
06-29 28.07
06-30 25.1
07-01 39.91
07-02 36.1
07-03 33.04
07-04 28.31
07-05 26.03
07-06 25.81
07-07 37.13
07-08 30.72
07-09 34.09
07-10 31.45
07-11 34.88
07-12 35.03
07-13 44.1
07-14 24.64
07-15 25.34
07-16 67.06
07-17 25.2
07-18 31.34
07-19 25.59
07-20 22.87
07-21 20.96
07-22 46.19
07-23 27.09
07-24 39.04
07-25 30.26
07-26 82.36
07-27 27.12
07-28 27.74
07-29 38.02
07-30 24.5
07-31 26.17
08-01 24.82
08-02 28.79
08-03 21.74
08-04 30.01
08-05 33.61
08-06 24.86
08-07 23.68
08-08 27.24
08-09 21.54
08-10 24.38
08-11 24.28
08-12 23.23
08-13 24.13
08-14 42.91
08-15 34.54
08-16 24.58
08-17 22.57
08-18 21.72
08-19 238.36
08-20 55.12
08-21 21.98
08-22 60.97
08-23 25.45
08-24 26.95
08-25 21.61
08-26 21.29
08-27 19.89
08-28 200.86
08-29 36.71
08-30 24.95
08-31 22.51
09-01 22.83
09-02 154.77
09-03 33.96
09-04 29.88
09-05 24.44
09-06 34.24
09-07 73.02
09-08 37.36
09-09 28.23
09-10 31.83
09-11 30.49
09-12 24.75
09-13 25.18
09-14 22.55
09-15 21.21
09-16 20.44
09-17 19.95
09-18 23.46
09-19 25.56
09-20 21.04
09-21 19.69
09-22 26.78
09-23 19.43
09-24 91.84
09-25 38.57
09-26 27.66
09-27 24.33
09-28 25.53
09-29 30.31
09-30 53.67
10-01 20.97
10-02 27.52
10-03 45.45
10-04 22.38
10-05 24.76
10-06 22.15
10-07 21.67
10-08 22.48
10-09 20.85
10-10 22.8
10-11 22.51
10-12 27.33
10-13 22.75
10-14 27.11
10-15 27.65
10-16 25.39
10-17 25.0
10-18 22.09
10-19 20.24
10-20 27.11
10-21 25.04
10-22 20.17
10-23 24.01
10-24 20.0
10-25 19.85
10-26 26.58
10-27 21.96
10-28 24.6
10-29 52.44
10-30 95.81
10-31 40.04
11-01 46.95
11-02 26.35
11-03 69.2
11-04 23.12
11-05 21.05
11-06 22.48
11-07 23.51
11-08 23.65
11-09 21.3
11-10 27.84
11-11 23.06
11-12 25.71
11-13 24.78
11-14 23.18
11-15 21.39
11-16 45.57
11-17 26.7
11-18 25.72
11-19 23.47
11-20 22.06
11-21 21.18
11-22 55.23
11-23 50.92
11-24 27.18
11-25 83.12
11-26 28.4
11-27 52.89
11-28 28.73
11-29 24.54
11-30 33.54
12-01 33.65
12-02 30.99
12-03 27.91
12-04 26.17
12-05 24.93
12-06 25.88
12-07 50.19
12-08 91.6
12-09 26.74
12-10 31.96
12-11 58.97
12-12 27.62
12-13 25.38
12-14 28.63
12-15 27.66
12-16 39.71
12-17 46.74
12-18 108.97
12-19 34.7
12-20 29.98
12-21 54.52
12-22 35.72
12-23 60.94
12-24 50.9
12-25 104.77
12-26 36.25
12-27 68.42
12-28 113.5
12-29 39.09
12-30 41.37
12-31 35.98

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index