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USGS Daily Statistics for the Nation

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 05536085 NB CHICAGO RIVER AT N PULASKI ROAD AT CHICAGO, IL


Cook County, Illinois
Hydrologic Unit Code 07120003
Latitude  41°58'29", Longitude  87°43'42" NAD83
Drainage area 112.4  square miles
Gage datum 575.40 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 2017-10-01 -> 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
1 218 201 269 440 516 105 188 50 81 85 188 118
2 175 123 217 386 446 137 176 43 104 123 141 210
3 170 120 180 381 553 99 171 39 125 202 108 198
4 160 173 156 342 491 91 106 30 148 181 91 180
5 120 187 205 350 327 182 129 33 138 132 129 143
6 97 174 225 344 254 189 151 41 135 144 157 123
7 85 177 177 296 238 118 102 60 120 116 117 107
8 94 178 162 268 199 90 92 76 140 145 81 97
9 99 184 196 224 232 132 67 63 153 121 62 83
10 154 201 273 171 229 175 103 90 113 94 57 76
11 196 154 246 142 156 105 131 85 122 121 71 99
12 201 135 192 135 123 74 100 78 214 169 67 139
13 196 104 182 119 130 102 95 61 263 121 53 151
14 146 79 215 122 178 114 119 50 246 139 63 111
15 114 90 233 131 377 70 175 99 213 142 63 157
16 101 82 200 144 328 149 217 86 185 108 61 146
17 100 178 168 127 263 122 227 84 165 80 57 111
18 90 161 162 111 353 93 214 71 164 59 60 86
19 88 120 164 105 291 107 236 67 149 46 71 65
20 81 105 166 83 233 97 159 55 122 41 61 56
21 72 97 155 112 298 176 170 68 102 38 80 50
22 62 124 124 108 367 198 210 49 110 100 99 47
23 63 266 141 175 307 272 211 35 165 117 74 56
24 87 299 179 156 280 277 233 47 118 113 61 59
25 145 269 218 145 278 327 225 62 100 205 69 50
26 198 207 242 127 236 352 178 92 75 215 141 61
27 218 213 190 100 216 366 147 149 70 258 182 89
28 190 286 239 112 178 290 143 135 145 242 143 102
29 145 114 263 240 194 246 134 157 132 207 97 157
30 115   268 396 180 255 103 141 123 217 77 207
31 133   310   133   71 94   203   195