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USGS Daily Statistics for the Nation

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 07194800 Illinois River at Savoy, AR


Washington County, Arkansas
Hydrologic Unit Code 11110103
Latitude  36°06'11", Longitude  94°20'40" NAD83
Drainage area 167  square miles
Gage datum 1,018.97 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 1978-10-01 -> 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
1 236 152 156 253 436 209 84 42 24 292 145 226
2 174 126 137 199 385 179 92 35 33 104 88 144
3 214 121 401 223 527 140 207 46 78 80 134 114
4 309 238 213 318 483 148 90 39 82 75 96 104
5 274 189 195 223 825 150 70 34 44 68 79 92
6 169 197 146 208 473 212 95 55 32 170 83 90
7 138 191 136 205 303 334 174 38 27 91 179 117
8 117 204 169 425 285 215 144 44 26 68 153 114
9 109 186 206 196 319 177 219 33 51 396 90 96
10 129 153 210 443 405 187 194 62 42 129 66 155
11 298 227 161 279 333 129 108 43 44 200 74 155
12 179 208 201 291 237 105 78 34 35 115 66 103
13 389 217 172 282 251 94 192 50 28 138 56 217
14 266 172 290 235 305 103 85 138 178 114 51 192
15 176 152 215 183 325 83 76 58 85 87 75 181
16 128 155 241 166 293 100 191 42 71 59 99 281
17 115 362 176 148 308 89 78 101 91 52 143 320
18 176 179 545 225 230 114 106 53 69 65 164 279
19 151 149 822 168 191 268 57 58 44 61 466 152
20 120 160 452 197 363 105 44 48 40 50 229 119
21 148 217 360 209 327 92 53 45 31 49 106 141
22 130 208 324 326 244 81 98 33 131 59 139 106
23 134 193 276 613 355 304 51 72 146 54 107 108
24 134 443 341 1,280 469 129 45 41 110 170 108 90
25 181 195 430 1,170 356 88 92 34 53 116 95 118
26 151 162 329 925 383 92 50 34 62 99 79 122
27 124 165 372 321 287 141 67 33 40 97 169 923
28 178 217 297 420 272 82 41 30 34 119 159 464
29 150 68 318 915 203 64 42 27 40 143 123 180
30 152   353 704 213 96 52 25 270 263 400 200
31 217   320   169   53 24   113   204