Overview Realtime Historical Map View
Beach Hazards Statement
2026-08-23T22:00:00-05:00

* WHAT...High wave action and dangerous currents at Lake Michigan beaches expected. * WHERE...In Illinois, Northern Cook and Central Cook Counties. In Indiana, Lake County. * WHEN...From 4 AM CDT Sunday through Sunday evening. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.

North Branch Chicago River At Niles, 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
01-01 108.39
01-02 93.25
01-03 78.31
01-04 137.44
01-05 95.19
01-06 80.22
01-07 76.94
01-08 84.0
01-09 141.64
01-10 168.24
01-11 196.81
01-12 213.49
01-13 151.87
01-14 142.53
01-15 106.32
01-16 96.78
01-17 109.4
01-18 82.5
01-19 101.61
01-20 88.58
01-21 78.21
01-22 67.31
01-23 66.67
01-24 156.43
01-25 133.4
01-26 163.03
01-27 183.3
01-28 174.42
01-29 147.74
01-30 158.5
01-31 167.34
02-01 187.21
02-02 140.99
02-03 162.67
02-04 158.12
02-05 126.98
02-06 90.97
02-07 159.68
02-08 190.01
02-09 133.24
02-10 161.53
02-11 163.17
02-12 131.88
02-13 102.9
02-14 82.46
02-15 91.23
02-16 95.48
02-17 124.32
02-18 127.27
02-19 111.31
02-20 148.08
02-21 267.29
02-22 198.46
02-23 224.23
02-24 238.52
02-25 191.77
02-26 147.79
02-27 147.45
02-28 202.08
02-29 104.45
03-01 189.98
03-02 182.62
03-03 152.61
03-04 132.34
03-05 114.25
03-06 147.95
03-07 155.7
03-08 142.35
03-09 141.86
03-10 178.54
03-11 292.16
03-12 279.87
03-13 241.21
03-14 235.1
03-15 257.09
03-16 264.46
03-17 233.2
03-18 176.84
03-19 160.49
03-20 143.44
03-21 145.97
03-22 114.29
03-23 106.17
03-24 153.21
03-25 171.72
03-26 196.54
03-27 178.63
03-28 150.39
03-29 195.53
03-30 164.71
03-31 234.63
04-01 306.74
04-02 240.23
04-03 268.88
04-04 248.36
04-05 246.2
04-06 254.96
04-07 246.26
04-08 205.54
04-09 188.6
04-10 222.67
04-11 220.54
04-12 214.79
04-13 169.62
04-14 170.03
04-15 263.83
04-16 379.84
04-17 320.14
04-18 315.43
04-19 414.15
04-20 313.99
04-21 260.28
04-22 182.73
04-23 196.21
04-24 180.06
04-25 165.68
04-26 151.88
04-27 111.21
04-28 140.14
04-29 218.48
04-30 375.75
05-01 417.21
05-02 292.39
05-03 312.64
05-04 357.06
05-05 233.33
05-06 206.48
05-07 179.36
05-08 135.09
05-09 163.15
05-10 214.14
05-11 226.55
05-12 186.59
05-13 212.18
05-14 238.86
05-15 361.79
05-16 274.47
05-17 221.97
05-18 146.02
05-19 243.25
05-20 193.68
05-21 194.86
05-22 277.56
05-23 266.81
05-24 205.93
05-25 235.47
05-26 254.93
05-27 262.43
05-28 201.37
05-29 192.51
05-30 224.79
05-31 191.48
06-01 165.03
06-02 152.99
06-03 105.94
06-04 77.84
06-05 121.44
06-06 129.76
06-07 101.04
06-08 83.03
06-09 86.15
06-10 148.66
06-11 138.73
06-12 142.35
06-13 141.5
06-14 134.73
06-15 177.71
06-16 241.24
06-17 196.63
06-18 131.07
06-19 127.54
06-20 100.84
06-21 98.1
06-22 160.06
06-23 206.85
06-24 191.07
06-25 171.75
06-26 203.39
06-27 344.82
06-28 243.89
06-29 188.46
06-30 208.84
07-01 265.6
07-02 194.35
07-03 193.85
07-04 161.68
07-05 127.85
07-06 112.71
07-07 90.06
07-08 75.83
07-09 74.85
07-10 61.87
07-11 93.77
07-12 102.98
07-13 171.81
07-14 140.25
07-15 150.88
07-16 149.79
07-17 131.52
07-18 102.97
07-19 185.86
07-20 163.06
07-21 138.6
07-22 165.01
07-23 190.43
07-24 334.25
07-25 289.16
07-26 187.77
07-27 153.75
07-28 199.89
07-29 147.35
07-30 127.94
07-31 77.83
08-01 64.59
08-02 80.53
08-03 90.78
08-04 83.62
08-05 81.6
08-06 54.51
08-07 50.22
08-08 87.35
08-09 83.19
08-10 119.11
08-11 135.53
08-12 120.5
08-13 101.07
08-14 76.72
08-15 85.52
08-16 85.18
08-17 80.76
08-18 65.53
08-19 130.6
08-20 92.16
08-21 124.56
08-22 82.56
08-23 61.48
08-24 73.03
08-25 53.69
08-26 63.96
08-27 117.07
08-28 81.35
08-29 95.49
08-30 118.94
08-31 91.99
09-01 56.57
09-02 69.06
09-03 76.21
09-04 110.85
09-05 109.48
09-06 116.29
09-07 87.71
09-08 80.99
09-09 105.54
09-10 81.86
09-11 97.42
09-12 136.24
09-13 146.26
09-14 165.58
09-15 130.16
09-16 120.46
09-17 90.86
09-18 138.56
09-19 150.55
09-20 152.02
09-21 113.05
09-22 70.23
09-23 109.15
09-24 83.74
09-25 81.61
09-26 62.85
09-27 91.28
09-28 122.51
09-29 127.44
09-30 121.55
10-01 90.88
10-02 86.94
10-03 117.76
10-04 141.83
10-05 94.51
10-06 118.73
10-07 113.59
10-08 114.9
10-09 91.94
10-10 69.53
10-11 103.61
10-12 142.51
10-13 104.65
10-14 103.52
10-15 271.82
10-16 239.68
10-17 159.44
10-18 125.39
10-19 104.51
10-20 109.36
10-21 94.96
10-22 74.18
10-23 117.9
10-24 140.45
10-25 170.22
10-26 162.55
10-27 216.33
10-28 182.53
10-29 139.33
10-30 130.82
10-31 126.48
11-01 156.54
11-02 110.28
11-03 97.34
11-04 95.39
11-05 106.81
11-06 87.03
11-07 93.49
11-08 67.05
11-09 93.58
11-10 90.88
11-11 69.04
11-12 83.64
11-13 64.27
11-14 61.47
11-15 60.41
11-16 61.08
11-17 63.31
11-18 88.95
11-19 107.83
11-20 85.83
11-21 73.55
11-22 107.55
11-23 81.04
11-24 76.42
11-25 89.52
11-26 128.48
11-27 172.8
11-28 130.91
11-29 160.47
11-30 129.32
12-01 107.61
12-02 197.23
12-03 187.15
12-04 167.45
12-05 127.73
12-06 112.14
12-07 85.42
12-08 52.61
12-09 74.51
12-10 69.72
12-11 62.39
12-12 64.35
12-13 95.91
12-14 70.45
12-15 158.42
12-16 137.38
12-17 119.96
12-18 91.82
12-19 70.6
12-20 55.55
12-21 93.02
12-22 93.13
12-23 88.2
12-24 104.36
12-25 80.38
12-26 71.67
12-27 66.92
12-28 77.82
12-29 99.61
12-30 175.8
12-31 155.44

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index