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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°57'06.36", Longitude  89°23'08.41" NAD83
Drainage area 214  square miles
Gage datum 554.73 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 -> 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
1 212 174 203 263 392 240 189 99 41 52 96 136
2 176 170 217 240 370 243 180 123 41 53 111 137
3 160 184 224 243 332 245 161 157 47 55 95 175
4 165 191 284 261 303 224 154 133 40 53 83 201
5 177 200 303 255 321 244 172 105 32 47 74 173
6 171 194 269 264 325 248 165 105 27 44 67 152
7 156 219 255 262 316 229 143 102 35 53 62 148
8 144 215 243 245 332 218 133 93 46 56 57 142
9 137 207 235 230 330 218 140 70 47 71 54 127
10 143 225 235 214 307 205 145 59 41 71 57 118
11 163 212 239 236 309 215 150 60 47 67 60 121
12 158 218 254 332 316 255 187 55 37 61 60 159
13 160 194 263 311 336 289 189 61 30 62 69 141
14 196 178 268 295 345 311 189 51 47 67 75 129
15 202 167 260 292 308 315 143 54 65 65 83 139
16 175 178 248 285 307 327 130 54 75 61 83 146
17 141 205 235 262 376 273 121 45 56 65 93 136
18 136 217 247 245 397 225 104 42 43 63 107 123
19 148 218 283 257 376 217 93 37 44 60 127 114
20 158 233 302 288 351 212 92 36 47 55 146 111
21 150 262 314 323 305 240 89 33 41 54 116 135
22 150 326 271 346 264 297 121 33 40 48 97 160
23 179 329 248 322 240 347 115 45 56 68 93 155
24 204 295 240 295 228 291 97 46 49 74 92 161
25 184 288 236 331 240 259 80 35 47 78 95 160
26 173 259 234 333 297 245 90 44 48 73 98 149
27 166 227 250 337 294 242 116 34 44 75 110 160
28 167 201 259 366 281 237 123 31 38 68 145 172
29 174 151 252 349 253 231 104 39 43 67 114 207
30 183   262 359 235 211 91 38 40 84 115 241
31 171   277   234   99 33   91   226