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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 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 -> 2024-09-30)

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
1 171 294 133 295 366 171 63 70 21 12 73 133
2 142 322 108 210 306 141 130 36 34 11 63 134
3 127 261 119 196 222 142 124 26 38 15 56 137
4 154 225 208 257 202 126 127 36 38 27 45 212
5 253 184 289 260 231 112 123 54 29 35 33 177
6 251 156 258 222 185 90 100 66 27 36 30 139
7 133 190 270 179 169 85 124 51 16 27 37 134
8 84 220 269 151 245 84 107 37 20 26 30 133
9 62 140 200 140 244 93 80 46 32 41 32 120
10 78 118 172 161 201 103 85 43 35 51 56 108
11 160 120 168 254 171 93 182 28 49 48 81 128
12 186 160 197 424 172 118 166 40 46 49 78 217
13 155 142 189 285 228 129 107 72 39 41 61 158
14 163 138 198 280 251 116 59 88 54 44 68 150
15 145 133 212 308 173 116 35 83 94 54 97 185
16 122 104 192 299 198 143 34 73 81 44 88 177
17 108 109 146 211 317 141 36 61 64 31 77 133
18 131 139 186 206 280 138 37 60 49 26 109 118
19 182 140 260 264 233 144 57 52 31 20 150 83
20 204 143 336 256 161 158 83 44 18 25 158 66
21 177 184 322 260 124 162 69 39 14 53 112 81
22 168 296 246 235 112 141 59 26 14 49 74 148
23 163 398 183 213 110 152 62 23 33 46 59 134
24 169 356 162 254 92 191 44 43 48 50 67 148
25 184 261 230 295 91 180 27 53 46 59 115 240
26 162 221 248 225 142 174 34 43 40 53 149 184
27 137 211 233 187 249 142 58 46 39 43 167 298
28 152 184 260 189 266 118 99 39 28 32 186 307
29 169 44 296 343 239 96 106 39 25 34 180 242
30 206   322 454 165 60 138 31 13 48 133 189
31 230   333   132   105 29   77   211