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USGS Surface-Water 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 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 -> 2023-09-30)

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
1 149 80 187 208 218 165 100 56 70 54 94 112
2 114 97 172 193 173 166 93 57 59 49 98 117
3 103 105 166 189 143 126 101 71 48 75 83 111
4 136 91 197 195 121 90 75 88 43 72 81 99
5 142 100 213 166 123 100 69 85 55 61 93 85
6 123 96 183 199 128 94 66 66 51 56 83 78
7 93 92 164 182 141 117 80 53 49 53 62 99
8 123 88 175 146 138 130 81 54 43 54 55 116
9 110 94 184 158 151 165 70 53 53 55 65 97
10 88 115 203 143 190 168 59 53 62 70 80 82
11 120 108 219 153 221 151 57 51 57 96 88 97
12 114 113 196 170 222 138 62 47 58 77 78 107
13 131 113 212 154 218 161 106 42 92 66 77 96
14 122 112 204 160 183 206 93 40 135 78 92 94
15 108 112 188 180 178 180 65 50 133 80 97 109
16 88 109 180 181 140 146 55 63 88 61 89 91
17 93 145 167 235 141 109 55 96 69 68 75 74
18 93 154 182 215 151 90 109 112 70 72 89 63
19 92 151 196 171 141 86 135 82 84 56 120 59
20 115 186 187 181 123 104 93 89 55 58 100 74
21 103 233 165 178 120 124 109 86 48 52 86 88
22 108 228 156 191 152 129 128 59 46 50 73 115
23 127 213 157 181 148 117 97 58 61 84 76 104
24 132 179 149 150 122 91 96 83 75 84 78 94
25 113 170 154 208 112 114 73 75 67 95 72 139
26 101 144 144 212 131 122 63 78 84 84 96 117
27 87 170 146 183 128 141 69 83 82 93 127 128
28 92 158 164 224 129 123 84 79 96 64 168 142
29 94 114 177 217 175 110 70 86 84 56 123 139
30 100   205 226 146 97 65 68 66 99 107 154
31 80   220   137   75 64   113   161