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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 05590800 LAKE FORK AT ATWOOD, IL


Piatt County, Illinois
Hydrologic Unit Code 07140201
Latitude  39°48'22.7", Longitude  88°28'34.4" NAD83
Drainage area 149  square miles
Gage datum 643.99 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 1972-10-01 -> 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
1 236 128 211 273 280 179 115 95 17 48 63 147
2 193 119 207 226 264 182 116 113 15 53 99 146
3 154 127 202 214 263 193 152 89 14 42 88 130
4 194 134 246 214 274 232 147 57 15 38 71 126
5 214 165 294 187 253 237 148 43 12 41 61 126
6 185 184 264 191 240 225 111 46 11 40 54 119
7 139 186 235 184 242 251 96 42 8.8 33 48 115
8 126 181 227 178 256 240 98 37 11 35 43 116
9 127 150 213 165 271 216 102 28 14 53 42 109
10 122 147 230 166 265 210 110 43 15 57 52 96
11 148 138 228 221 258 178 112 43 11 48 64 129
12 163 143 252 305 254 192 102 35 9.5 37 71 151
13 171 155 252 295 277 210 95 44 9.7 32 76 138
14 172 145 263 291 308 191 80 42 25 32 83 121
15 152 129 238 270 286 197 66 53 57 33 83 140
16 128 140 220 245 283 204 52 55 49 32 91 139
17 102 207 199 244 290 175 47 40 37 42 109 126
18 109 224 214 227 296 158 44 28 27 44 114 107
19 121 201 238 242 309 169 42 25 21 37 134 95
20 136 214 263 241 298 188 46 18 21 33 123 104
21 140 278 237 236 239 195 50 15 17 40 106 112
22 144 340 202 247 213 208 57 13 15 36 93 120
23 168 360 194 234 210 227 50 11 18 40 86 124
24 176 348 190 209 198 199 53 9 17 56 88 147
25 148 290 199 228 196 169 54 8.8 19 72 106 183
26 123 246 214 225 258 180 71 9.7 25 71 129 166
27 107 242 234 195 262 197 71 14 35 59 138 185
28 108 221 251 221 237 179 61 29 31 51 156 243
29 104 101 262 266 211 146 46 27 25 48 153 271
30 114   258 277 172 134 52 19 26 54 141 270
31 117   296   167   98 18   66   262