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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 05536275 THORN CREEK AT THORNTON, IL


Cook County, Illinois
Hydrologic Unit Code 07120003
Latitude  41°34'05.4", Longitude  87°36'30" NAD83
Drainage area 104  square miles
Gage datum 586.05 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 1947-10-01 -> 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
1 152 82 183 248 215 162 98 55 69 53 93 112
2 115 98 168 219 171 163 95 57 58 49 97 118
3 104 105 163 208 143 124 101 70 48 74 82 112
4 135 91 198 205 120 89 75 87 43 71 81 100
5 141 100 227 173 122 110 70 85 54 62 96 86
6 122 95 189 202 126 99 73 70 55 56 86 79
7 93 91 164 184 139 117 81 54 49 52 63 99
8 122 87 178 150 135 128 82 54 43 53 55 115
9 112 93 195 158 151 162 70 53 52 55 64 97
10 97 114 205 143 188 164 61 53 61 69 80 82
11 123 106 218 152 216 148 58 51 58 94 87 96
12 116 112 194 169 217 135 75 47 59 79 77 106
13 139 111 209 152 215 159 115 41 91 67 76 95
14 123 110 208 157 186 202 100 42 132 82 91 93
15 109 110 192 176 175 176 74 53 130 83 96 108
16 88 107 182 176 138 143 60 63 86 63 87 91
17 93 142 168 229 138 107 57 98 74 69 74 77
18 92 151 181 210 148 88 109 112 73 71 88 66
19 91 148 194 168 138 84 133 81 84 56 118 60
20 113 183 189 178 120 102 92 88 56 58 98 74
21 102 228 165 175 119 121 108 85 48 53 89 88
22 107 224 155 186 149 126 125 59 47 50 76 114
23 126 209 155 177 146 117 96 57 61 83 77 107
24 133 176 147 147 120 90 95 81 76 83 78 96
25 121 167 152 203 111 114 72 74 69 94 72 139
26 116 141 144 206 130 120 62 77 84 84 95 119
27 97 167 145 179 126 139 68 81 81 94 125 129
28 99 155 163 222 128 121 83 79 96 65 165 143
29 98 110 174 220 173 109 71 85 83 58 121 144
30 102   205 225 144 95 64 67 65 100 105 161
31 83   222   135   74 63   113   164