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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 84 158 227 244 117 108 48 69 77 90 102
2 88 84 157 220 220 128 101 56 61 79 96 109
3 86 87 158 207 208 109 109 69 61 97 85 110
4 95 91 173 201 170 100 90 93 58 89 81 98
5 86 92 198 184 152 127 81 86 62 82 88 95
6 76 88 174 198 139 102 68 79 68 80 87 85
7 69 90 151 172 131 91 84 72 56 62 72 86
8 68 89 155 166 127 107 83 80 51 62 58 90
9 70 96 179 198 142 129 80 72 63 58 66 84
10 73 101 200 191 159 134 91 83 58 65 80 84
11 81 97 205 186 179 153 85 70 62 82 80 92
12 80 100 194 194 200 132 95 59 77 75 70 103
13 89 92 208 174 186 131 117 65 120 72 66 93
14 85 85 217 178 177 133 102 85 131 96 70 98
15 85 80 200 197 193 144 98 95 104 105 77 119
16 79 81 184 213 157 134 87 83 77 83 77 92
17 87 101 172 212 156 118 85 99 87 81 70 72
18 88 110 175 210 167 106 116 104 106 77 74 65
19 81 128 185 190 167 116 138 97 101 71 79 60
20 91 154 179 182 139 115 119 104 91 70 76 65
21 85 181 171 174 142 117 113 89 87 59 73 71
22 97 179 168 172 154 116 104 104 83 69 68 73
23 104 179 168 188 148 125 132 97 102 99 78 77
24 101 174 160 169 136 121 153 105 95 104 75 79
25 96 164 168 184 133 112 117 92 95 109 69 100
26 89 154 158 186 141 134 87 98 103 94 81 94
27 89 168 153 177 139 134 79 102 88 95 108 104
28 83 155 173 198 128 109 71 93 83 75 124 110
29 85 87 182 205 137 106 69 89 98 66 114 108
30 90   185 233 128 107 62 84 87 77 106 113
31 86   201   117   58 79   81   111