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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 -> 2026-09-30)

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 84 158 227 242 116 108 49 69 76 89 102
2 88 84 157 220 219 127 101 56 61 79 96 109
3 86 87 158 207 206 108 108 69 60 96 84 110
4 95 91 173 201 168 101 89 92 58 88 81 98
5 86 92 198 184 151 127 80 85 62 81 87 95
6 76 88 174 198 138 102 68 79 68 79 87 85
7 69 90 151 172 130 91 84 72 56 64 71 86
8 68 89 155 166 126 107 83 79 50 62 58 90
9 70 96 179 198 140 128 80 71 62 58 66 84
10 73 101 200 191 158 133 91 82 57 65 80 84
11 81 97 205 186 177 151 88 70 62 82 80 92
12 80 100 194 194 197 131 96 60 76 74 70 103
13 89 92 208 174 184 129 117 66 121 71 66 93
14 85 85 217 178 175 131 102 84 132 96 70 98
15 85 80 200 197 191 143 97 94 104 104 76 119
16 79 81 184 213 155 133 86 83 77 82 76 92
17 87 101 172 212 154 117 85 100 87 80 70 72
18 88 110 175 210 165 106 115 106 105 77 74 65
19 81 128 185 190 166 117 137 104 100 72 79 60
20 91 154 179 182 139 115 120 108 90 71 76 65
21 85 181 171 174 143 116 113 90 86 60 73 71
22 97 179 168 172 155 115 104 104 82 69 68 73
23 104 179 168 188 147 124 131 97 101 99 78 77
24 101 174 160 169 135 120 152 104 94 103 74 79
25 96 164 168 184 132 112 116 92 94 108 69 100
26 89 154 158 186 140 134 86 97 102 93 81 94
27 89 168 153 177 137 133 78 101 87 94 107 104
28 83 155 173 198 127 108 70 92 82 74 123 110
29 85 87 182 205 137 106 68 88 97 65 113 108
30 90   185 230 127 109 62 84 87 76 105 113
31 86   201   116   59 78   80   111