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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 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
1 212 171 204 265 377 242 191 99 41 52 96 136
2 176 167 219 237 364 245 182 123 41 53 111 137
3 160 182 226 238 328 246 163 157 47 55 95 175
4 165 189 287 259 300 226 155 133 40 53 83 201
5 177 199 306 254 320 240 173 105 32 47 74 173
6 171 193 271 264 324 244 167 105 27 44 67 152
7 156 219 258 262 315 228 145 102 35 53 62 148
8 144 215 245 245 332 218 134 93 46 56 57 142
9 137 207 234 230 330 218 142 70 47 71 54 127
10 143 226 234 214 308 206 146 59 41 71 57 118
11 163 213 239 237 310 215 151 60 47 67 60 121
12 158 219 254 334 317 256 189 55 37 61 60 159
13 160 195 264 313 337 291 191 61 30 62 69 141
14 196 178 269 296 347 313 191 51 47 67 75 129
15 202 167 261 294 309 318 144 54 65 65 83 139
16 175 179 250 287 309 330 128 54 75 61 83 146
17 141 206 236 264 378 276 119 45 56 65 93 136
18 136 218 249 247 399 227 104 42 43 63 107 123
19 148 220 285 258 379 218 93 37 44 60 127 114
20 158 234 305 289 353 213 92 36 47 55 146 111
21 150 264 316 325 307 242 89 33 41 54 116 135
22 150 329 273 348 265 300 122 33 40 48 97 160
23 179 332 250 324 241 350 116 45 56 68 93 155
24 204 297 241 296 229 294 97 46 49 74 92 161
25 184 290 238 333 241 261 80 35 47 78 95 160
26 156 261 236 335 299 246 90 44 48 73 98 149
27 157 228 252 335 296 244 116 34 44 75 110 160
28 161 202 261 345 283 239 123 31 38 68 145 172
29 168 154 254 324 255 233 104 39 43 67 114 207
30 178   264 333 236 213 91 38 40 84 115 241
31 167   280   235   99 33   91   226