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USGS Daily Statistics for the Nation

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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 -> 2025-09-30)

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
1 240 134 204 265 287 179 113 93 17 47 62 146
2 195 124 201 232 267 182 114 112 15 52 98 145
3 155 130 196 226 264 192 150 88 14 41 87 129
4 192 135 238 222 273 231 146 57 14 37 70 124
5 211 165 285 206 252 235 147 43 12 40 63 123
6 183 182 256 209 239 224 110 45 10 39 66 116
7 137 183 227 196 241 250 96 41 8.6 32 57 112
8 124 178 220 184 254 239 97 37 10 34 49 113
9 126 148 212 168 268 214 102 28 14 52 46 106
10 126 144 228 167 263 208 116 42 15 56 54 93
11 149 135 224 220 256 177 119 42 11 47 67 125
12 165 140 246 301 252 191 106 34 9.3 37 73 146
13 183 152 246 290 274 208 96 44 9.5 31 77 133
14 179 142 256 285 304 190 81 41 25 32 84 118
15 154 127 233 264 283 195 66 52 56 32 84 136
16 128 137 216 240 280 202 55 54 48 32 91 135
17 101 201 196 238 289 173 51 39 36 42 109 123
18 108 217 209 222 296 157 47 28 27 43 113 105
19 118 195 232 236 307 167 43 25 21 36 134 94
20 132 208 256 234 296 186 47 18 20 32 123 101
21 136 269 231 231 237 193 50 15 17 40 107 109
22 140 329 196 241 212 205 57 13 15 36 93 117
23 164 348 189 228 208 225 50 11 18 39 86 121
24 183 336 184 205 197 197 52 8.9 17 54 88 143
25 165 281 194 222 211 168 53 8.7 18 71 106 178
26 144 238 208 221 274 178 71 9.6 25 70 128 161
27 126 235 226 195 275 195 70 14 34 57 136 180
28 125 215 243 225 245 177 61 29 31 50 154 235
29 118 98 254 272 215 145 45 27 24 47 152 265
30 125   250 289 175 133 52 19 26 53 139 276
31 125   287   168   96 18   65   267