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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 05594450 SILVER CREEK NEAR TROY, IL


Madison County, Illinois
Hydrologic Unit Code 07140204
Latitude  38°42'59", Longitude  89°49'45" NAD83
Drainage area 154  square miles
Gage datum 438.56 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 1966-10-01 -> 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
1 175 298 129 288 392 167 62 71 21 12 72 131
2 143 322 106 221 325 139 128 36 33 11 62 132
3 126 259 116 221 238 142 122 26 38 15 55 135
4 152 224 202 280 213 125 134 35 37 27 51 209
5 250 183 280 347 241 111 134 54 28 35 68 174
6 248 155 251 305 192 89 109 65 27 36 112 137
7 132 187 262 206 176 84 125 50 16 27 81 132
8 83 215 261 165 247 83 106 37 20 26 50 131
9 62 138 194 145 245 92 83 45 32 40 40 118
10 77 116 168 160 200 102 96 43 34 50 60 107
11 158 118 163 261 168 92 191 28 48 47 83 126
12 183 156 191 424 170 116 169 39 45 49 79 214
13 153 139 183 286 226 127 109 71 38 41 62 155
14 160 135 195 274 245 114 59 87 53 43 68 149
15 143 131 225 300 169 114 35 82 92 53 97 186
16 120 103 203 290 193 141 39 72 79 43 88 178
17 107 108 149 205 309 139 43 60 63 30 77 133
18 131 135 182 202 275 135 38 59 48 26 107 118
19 182 136 253 272 227 142 56 51 31 19 148 83
20 204 139 326 266 166 155 82 43 18 24 156 66
21 175 179 312 267 130 160 68 38 13 52 111 80
22 166 287 239 241 115 139 59 26 14 49 74 146
23 160 386 181 220 108 150 61 23 38 45 59 132
24 166 345 163 253 90 188 43 42 58 49 66 146
25 181 254 225 291 89 177 27 52 53 58 113 237
26 160 216 243 228 143 171 34 42 40 52 147 181
27 135 205 229 203 257 140 57 46 39 43 165 294
28 149 179 258 199 271 116 98 38 30 31 183 303
29 168 42 290 360 237 94 106 38 25 33 177 240
30 207   315 471 162 59 144 31 13 47 131 191
31 235   326   129   112 28   76   213