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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 05579500 LAKE FORK NEAR CORNLAND, IL


Logan County, Illinois
Hydrologic Unit Code 07130009
Latitude  39°57'06", Longitude  89°23'08" NAD83
Drainage area 214  square miles
Gage datum 555.06 feet above NGVD29
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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 -> 2020-09-30)

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
1 219 175 203 254 358 245 185 103 42 54 94 141
2 181 172 219 229 358 248 180 121 43 55 112 141
3 164 187 225 233 328 251 163 156 49 57 95 182
4 168 195 281 257 301 230 157 132 40 55 83 209
5 181 205 304 253 322 245 176 106 30 48 74 180
6 175 199 270 264 320 250 169 107 26 45 66 157
7 159 226 255 261 314 233 147 105 35 54 62 154
8 148 222 242 244 332 223 133 96 47 58 57 147
9 139 213 233 230 329 224 141 71 49 74 54 131
10 143 232 234 214 304 210 146 59 42 73 57 122
11 166 218 240 238 310 221 154 61 48 70 61 126
12 160 223 257 340 320 265 186 56 39 63 60 165
13 161 199 267 318 343 301 185 62 31 64 70 146
14 201 182 273 301 354 325 192 52 49 69 76 133
15 209 171 266 299 314 330 144 55 68 67 85 133
16 180 180 253 292 314 343 118 56 78 63 85 143
17 146 204 239 268 368 286 113 46 58 66 95 136
18 140 220 242 251 378 235 101 43 45 65 111 123
19 150 223 278 263 357 226 91 38 46 62 132 115
20 160 239 303 295 345 221 91 37 49 56 152 112
21 152 268 317 332 303 250 89 33 42 55 121 138
22 153 325 274 356 261 311 123 33 38 50 100 165
23 182 324 248 331 238 363 118 46 55 70 96 160
24 199 295 238 302 227 304 99 48 49 75 95 166
25 177 291 234 336 241 270 81 36 48 75 98 165
26 159 262 231 341 303 238 92 45 49 71 101 153
27 160 229 249 341 300 236 119 35 45 74 114 165
28 165 201 261 353 286 232 127 32 39 67 149 177
29 173 154 254 330 256 230 108 40 45 64 117 213
30 183   264 339 238 210 94 39 41 81 119 250
31 172   271   238   102 34   88   234