Overview Realtime Historical Map View
Flood Watch
2026-09-19T13:00:00-05:00

* WHAT...Flooding and flash flooding caused by excessive rainfall are possible. * WHERE...Portions of east central, south central, and southeast Wisconsin, including the following counties, in east central Wisconsin, Fond du Lac and Sheboygan. In south central Wisconsin, Green Lake and Marquette. In southeast Wisconsin, Dodge, Jefferson, Kenosha, Milwaukee, Ozaukee, Racine, Walworth, Washington and Waukesha. * WHEN...From 1 AM CDT Saturday through Saturday 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. Storm drains and ditches may become clogged with debris. * ADDITIONAL DETAILS... - Widespread and prolonged showers and storms will bring rain accumulations of 1-3 inches. Band of higher totals in the 3-6 inches range or more will be possible in areas where storms track repeatedly. - http://www.weather.gov/safety/flood

Piscasaw Creek Near Walworth, Wi 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 3.46
01-02 3.38
01-03 3.4
01-04 3.17
01-05 3.07
01-06 3.05
01-07 3.0
01-08 4.21
01-09 3.2
01-10 3.1
01-11 3.53
01-12 3.34
01-13 3.21
01-14 2.99
01-15 2.92
01-16 2.87
01-17 2.72
01-18 2.95
01-19 2.75
01-20 2.74
01-21 2.56
01-22 2.56
01-23 2.62
01-24 2.69
01-25 2.64
01-26 2.72
01-27 2.76
01-28 2.71
01-29 2.86
01-30 4.02
01-31 2.59
02-01 2.64
02-02 2.56
02-03 3.08
02-04 3.29
02-05 3.32
02-06 3.02
02-07 2.83
02-08 3.48
02-09 2.76
02-10 2.72
02-11 7.68
02-12 3.3
02-13 2.97
02-14 2.96
02-15 2.83
02-16 2.66
02-17 2.09
02-18 1.97
02-19 8.35
02-20 22.77
02-21 5.16
02-22 3.19
02-23 3.03
02-24 5.01
02-25 3.61
02-26 3.04
02-27 2.8
02-28 3.6
02-29 3.98
03-01 3.11
03-02 3.13
03-03 3.25
03-04 3.3
03-05 3.2
03-06 3.05
03-07 3.12
03-08 3.28
03-09 3.7
03-10 13.49
03-11 29.4
03-12 8.68
03-13 19.16
03-14 13.36
03-15 7.12
03-16 8.49
03-17 6.5
03-18 5.37
03-19 4.2
03-20 7.82
03-21 6.18
03-22 3.48
03-23 4.06
03-24 4.67
03-25 4.61
03-26 4.55
03-27 5.62
03-28 5.25
03-29 7.02
03-30 4.81
03-31 5.6
04-01 5.44
04-02 5.38
04-03 7.59
04-04 6.86
04-05 5.67
04-06 5.52
04-07 4.66
04-08 3.67
04-09 3.91
04-10 5.26
04-11 5.22
04-12 4.63
04-13 4.08
04-14 4.03
04-15 17.18
04-16 17.93
04-17 5.17
04-18 16.73
04-19 5.97
04-20 4.47
04-21 4.01
04-22 4.64
04-23 4.83
04-24 3.58
04-25 3.49
04-26 3.31
04-27 3.28
04-28 3.36
04-29 3.64
04-30 9.18
05-01 11.88
05-02 3.69
05-03 3.93
05-04 3.76
05-05 3.64
05-06 3.76
05-07 3.64
05-08 3.27
05-09 10.35
05-10 3.94
05-11 3.78
05-12 3.56
05-13 3.46
05-14 3.27
05-15 4.39
05-16 4.54
05-17 3.7
05-18 6.39
05-19 3.77
05-20 3.56
05-21 3.75
05-22 3.8
05-23 13.92
05-24 3.82
05-25 4.69
05-26 4.51
05-27 4.23
05-28 3.91
05-29 4.33
05-30 3.71
05-31 3.74
06-01 3.52
06-02 3.61
06-03 3.35
06-04 3.15
06-05 4.41
06-06 3.47
06-07 3.23
06-08 3.26
06-09 4.29
06-10 3.74
06-11 3.65
06-12 7.48
06-13 4.68
06-14 4.04
06-15 4.91
06-16 4.19
06-17 3.8
06-18 4.68
06-19 37.65
06-20 5.15
06-21 4.9
06-22 4.76
06-23 4.53
06-24 4.44
06-25 5.42
06-26 5.94
06-27 12.41
06-28 5.7
06-29 6.14
06-30 7.29
07-01 6.28
07-02 5.37
07-03 4.97
07-04 5.36
07-05 4.67
07-06 4.99
07-07 5.64
07-08 4.78
07-09 4.38
07-10 4.18
07-11 3.74
07-12 3.68
07-13 4.58
07-14 4.13
07-15 4.02
07-16 3.8
07-17 3.71
07-18 3.83
07-19 4.49
07-20 3.99
07-21 4.42
07-22 10.08
07-23 4.27
07-24 6.86
07-25 4.07
07-26 3.63
07-27 3.55
07-28 5.31
07-29 4.22
07-30 3.39
07-31 3.26
08-01 3.65
08-02 3.58
08-03 3.49
08-04 3.21
08-05 3.3
08-06 3.07
08-07 3.07
08-08 3.13
08-09 3.44
08-10 3.32
08-11 6.53
08-12 3.46
08-13 2.94
08-14 3.3
08-15 2.89
08-16 2.57
08-17 4.19
08-18 3.24
08-19 12.85
08-20 4.02
08-21 3.16
08-22 2.97
08-23 2.99
08-24 2.99
08-25 2.89
08-26 2.79
08-27 3.8
08-28 2.91
08-29 3.31
08-30 3.07
08-31 2.83
09-01 2.89
09-02 3.0
09-03 8.08
09-04 5.06
09-05 3.36
09-06 4.09
09-07 3.19
09-08 3.1
09-09 3.32
09-10 3.02
09-11 3.44
09-12 49.01
09-13 47.35
09-14 4.13
09-15 3.52
09-16 3.46
09-17 3.4
09-18 3.87
09-19 3.53
09-20 3.48
09-21 3.49
09-22 3.41
09-23 3.84
09-24 3.41
09-25 3.31
09-26 3.3
09-27 3.42
09-28 2.77
09-29 3.34
09-30 3.61
10-01 3.64
10-02 18.61
10-03 5.02
10-04 4.03
10-05 3.92
10-06 52.23
10-07 4.7
10-08 4.27
10-09 4.02
10-10 4.69
10-11 4.95
10-12 4.99
10-13 4.7
10-14 4.92
10-15 5.51
10-16 4.88
10-17 4.46
10-18 4.53
10-19 4.13
10-20 4.1
10-21 4.02
10-22 4.09
10-23 4.33
10-24 4.27
10-25 4.27
10-26 4.2
10-27 7.94
10-28 4.36
10-29 4.27
10-30 3.92
10-31 4.04
11-01 4.0
11-02 2.23
11-03 2.54
11-04 2.51
11-05 3.85
11-06 2.83
11-07 2.73
11-08 2.5
11-09 2.31
11-10 3.91
11-11 2.68
11-12 2.48
11-13 2.36
11-14 3.58
11-15 3.58
11-16 3.57
11-17 3.38
11-18 4.07
11-19 4.14
11-20 3.92
11-21 3.74
11-22 4.43
11-23 3.65
11-24 3.81
11-25 4.03
11-26 3.86
11-27 9.38
11-28 4.13
11-29 4.36
11-30 3.94
12-01 4.39
12-02 6.43
12-03 5.26
12-04 4.49
12-05 4.17
12-06 4.02
12-07 3.79
12-08 3.69
12-09 3.7
12-10 3.82
12-11 3.58
12-12 3.51
12-13 3.89
12-14 3.64
12-15 4.17
12-16 3.69
12-17 4.25
12-18 4.14
12-19 3.85
12-20 3.6
12-21 3.76
12-22 4.66
12-23 3.99
12-24 5.61
12-25 4.15
12-26 4.09
12-27 4.04
12-28 4.22
12-29 4.88
12-30 5.65
12-31 4.76

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index