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USGS Daily Statistics for Illinois

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The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 05536000 NORTH BRANCH CHICAGO RIVER AT NILES, IL


Cook County, Illinois
Hydrologic Unit Code 07120003
Latitude  42°00'44", Longitude  87°47'45" NAD83
Drainage area 100  square miles
Gage datum 601.49 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1950-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 101 78 159 229 244 117 108 48 69 77 90 102
2 88 81 158 219 220 128 101 56 61 79 96 109
3 86 86 159 205 208 109 109 69 61 97 85 110
4 95 91 175 200 170 100 90 93 58 89 81 98
5 86 93 197 183 152 127 81 86 62 82 88 95
6 76 88 173 198 139 102 68 79 68 80 87 85
7 69 91 150 173 131 91 84 72 56 62 72 86
8 69 89 154 167 127 107 83 80 51 62 58 90
9 70 97 180 199 142 129 80 72 63 58 66 84
10 74 102 201 192 159 134 91 83 58 65 80 84
11 82 98 207 187 179 153 85 70 62 82 80 92
12 80 101 196 195 200 132 95 59 77 75 70 103
13 90 93 210 176 186 131 117 65 120 72 66 93
14 86 86 219 180 177 133 102 85 131 96 70 98
15 86 81 201 199 193 144 98 95 104 105 77 119
16 80 82 184 215 157 134 87 83 77 83 77 92
17 88 103 172 214 156 118 85 99 87 81 70 72
18 89 111 176 212 167 106 116 104 106 77 74 65
19 82 130 186 192 167 116 138 97 101 71 79 60
20 92 156 179 183 139 115 119 104 91 70 76 65
21 86 183 171 174 142 117 113 89 87 59 73 71
22 98 181 169 174 154 116 104 104 83 69 68 73
23 106 181 169 190 148 125 132 97 102 99 78 77
24 102 175 160 171 136 121 153 105 95 104 75 79
25 97 166 169 185 133 112 117 92 95 109 69 100
26 90 155 159 187 141 134 87 98 103 94 81 94
27 90 168 154 179 139 134 79 102 88 95 108 104
28 84 156 174 200 128 109 71 93 83 75 124 110
29 86 87 184 207 137 106 69 89 98 66 114 108
30 90   187 233 128 107 62 84 87 77 106 113
31 82   203   117   58 79   81   111