Overview Realtime Historical Map View
Flood Watch
2026-08-16T10:00:00-05:00

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northeast Illinois, including the following areas, Kendall, Northern Will and Southern Cook. * WHEN...Until 10 AM CDT Sunday. * IMPACTS...Creeks and streams may rise out of their banks. Roads and streets may be flooded. * ADDITIONAL DETAILS... - Scattered showers and thunderstorms are expected to develop and move across northern and central Illinois and northwest Indiana tonight. Torrential rainfall will be possible with these showers and thunderstorms. With the already elevated soil moisture localized flooding will be possible. - http://www.weather.gov/safety/flood

Little Calumet River At South Holland, Il Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 307.5
01-02 252.25
01-03 179.55
01-04 218.45
01-05 177.74
01-06 121.78
01-07 112.19
01-08 121.89
01-09 160.2
01-10 299.01
01-11 348.04
01-12 449.45
01-13 354.7
01-14 294.05
01-15 198.74
01-16 195.3
01-17 167.42
01-18 145.94
01-19 176.0
01-20 144.6
01-21 120.74
01-22 111.06
01-23 128.16
01-24 276.56
01-25 300.91
01-26 325.79
01-27 327.83
01-28 242.77
01-29 225.07
01-30 203.15
01-31 221.66
02-01 200.92
02-02 144.77
02-03 224.56
02-04 283.59
02-05 253.71
02-06 208.95
02-07 202.73
02-08 210.84
02-09 150.0
02-10 180.83
02-11 153.93
02-12 143.9
02-13 146.05
02-14 113.62
02-15 115.01
02-16 127.32
02-17 188.67
02-18 203.65
02-19 203.71
02-20 285.47
02-21 548.51
02-22 526.09
02-23 475.77
02-24 405.02
02-25 292.35
02-26 224.41
02-27 233.95
02-28 274.38
02-29 191.85
03-01 326.82
03-02 304.08
03-03 232.06
03-04 198.93
03-05 265.36
03-06 310.73
03-07 299.99
03-08 256.65
03-09 287.81
03-10 282.36
03-11 411.71
03-12 469.5
03-13 367.64
03-14 299.79
03-15 415.19
03-16 409.68
03-17 319.59
03-18 272.86
03-19 236.93
03-20 331.43
03-21 285.33
03-22 201.5
03-23 169.8
03-24 205.37
03-25 252.07
03-26 264.5
03-27 234.63
03-28 194.97
03-29 204.93
03-30 191.36
03-31 467.06
04-01 570.84
04-02 462.71
04-03 457.49
04-04 521.35
04-05 425.87
04-06 398.17
04-07 392.54
04-08 332.2
04-09 265.63
04-10 208.09
04-11 202.24
04-12 226.14
04-13 180.11
04-14 174.7
04-15 208.48
04-16 300.18
04-17 210.58
04-18 272.82
04-19 477.58
04-20 366.82
04-21 242.55
04-22 198.41
04-23 161.75
04-24 163.54
04-25 155.59
04-26 220.24
04-27 171.96
04-28 197.72
04-29 212.54
04-30 414.59
05-01 518.27
05-02 470.79
05-03 333.08
05-04 343.15
05-05 297.76
05-06 273.87
05-07 238.58
05-08 258.67
05-09 232.91
05-10 367.33
05-11 343.5
05-12 343.55
05-13 269.34
05-14 239.78
05-15 260.68
05-16 307.95
05-17 286.63
05-18 288.12
05-19 316.8
05-20 224.79
05-21 237.12
05-22 244.49
05-23 230.8
05-24 251.19
05-25 196.21
05-26 199.89
05-27 218.51
05-28 301.45
05-29 326.81
05-30 346.13
05-31 313.53
06-01 250.87
06-02 227.86
06-03 153.21
06-04 111.15
06-05 167.71
06-06 142.51
06-07 128.92
06-08 137.81
06-09 175.59
06-10 282.64
06-11 323.29
06-12 295.37
06-13 299.6
06-14 298.18
06-15 300.22
06-16 304.71
06-17 249.82
06-18 270.01
06-19 236.3
06-20 182.94
06-21 238.36
06-22 431.94
06-23 468.51
06-24 350.9
06-25 267.69
06-26 310.5
06-27 394.84
06-28 391.76
06-29 315.96
06-30 321.99
07-01 364.29
07-02 336.87
07-03 289.14
07-04 309.43
07-05 282.59
07-06 412.93
07-07 307.44
07-08 170.02
07-09 159.31
07-10 110.16
07-11 107.43
07-12 112.82
07-13 246.59
07-14 254.42
07-15 148.8
07-16 127.33
07-17 144.33
07-18 113.15
07-19 136.05
07-20 183.25
07-21 138.65
07-22 198.48
07-23 216.97
07-24 190.13
07-25 257.17
07-26 144.32
07-27 94.61
07-28 174.9
07-29 167.81
07-30 170.56
07-31 100.27
08-01 75.17
08-02 199.4
08-03 182.82
08-04 141.19
08-05 102.51
08-06 107.81
08-07 87.36
08-08 90.09
08-09 64.96
08-10 115.03
08-11 79.91
08-12 136.15
08-13 214.11
08-14 143.55
08-15 203.19
08-16 112.11
08-17 90.58
08-18 146.0
08-19 210.19
08-20 164.39
08-21 298.2
08-22 191.89
08-23 107.39
08-24 159.32
08-25 92.92
08-26 125.33
08-27 121.14
08-28 134.28
08-29 99.79
08-30 97.09
08-31 83.62
09-01 80.97
09-02 75.29
09-03 55.14
09-04 103.02
09-05 68.34
09-06 90.64
09-07 98.31
09-08 93.19
09-09 69.45
09-10 59.78
09-11 150.35
09-12 139.74
09-13 124.77
09-14 73.6
09-15 52.69
09-16 58.78
09-17 45.13
09-18 178.64
09-19 169.33
09-20 105.47
09-21 47.69
09-22 80.32
09-23 75.41
09-24 53.84
09-25 46.74
09-26 72.11
09-27 67.76
09-28 183.38
09-29 222.36
09-30 214.65
10-01 171.56
10-02 133.85
10-03 118.94
10-04 158.92
10-05 89.19
10-06 107.93
10-07 128.04
10-08 157.16
10-09 97.81
10-10 67.86
10-11 115.14
10-12 133.89
10-13 103.14
10-14 136.59
10-15 268.13
10-16 168.67
10-17 96.61
10-18 70.15
10-19 74.23
10-20 109.93
10-21 106.66
10-22 77.52
10-23 90.74
10-24 162.36
10-25 230.41
10-26 283.29
10-27 328.04
10-28 288.31
10-29 187.9
10-30 190.42
10-31 309.83
11-01 304.74
11-02 186.25
11-03 170.89
11-04 169.71
11-05 134.61
11-06 105.15
11-07 115.39
11-08 86.61
11-09 126.0
11-10 81.43
11-11 103.72
11-12 107.34
11-13 95.04
11-14 74.41
11-15 72.61
11-16 76.71
11-17 67.85
11-18 114.38
11-19 182.65
11-20 155.72
11-21 97.93
11-22 162.19
11-23 115.3
11-24 115.89
11-25 156.46
11-26 163.66
11-27 210.52
11-28 157.18
11-29 214.31
11-30 175.71
12-01 140.21
12-02 198.17
12-03 168.16
12-04 144.8
12-05 117.98
12-06 99.02
12-07 94.76
12-08 81.65
12-09 75.76
12-10 78.06
12-11 100.62
12-12 126.09
12-13 130.5
12-14 94.05
12-15 206.11
12-16 229.93
12-17 200.04
12-18 138.53
12-19 125.55
12-20 92.55
12-21 129.37
12-22 144.9
12-23 143.42
12-24 207.94
12-25 165.11
12-26 134.79
12-27 148.71
12-28 251.2
12-29 251.08
12-30 367.43
12-31 313.3

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index