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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 05567500 MACKINAW RIVER NEAR CONGERVILLE, IL


Woodford County, Illinois
Hydrologic Unit Code 07130004
Latitude  40°37'24.6", Longitude  89°14'30.0" NAD83
Drainage area 767  square miles
Gage datum 606.77 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 1944-10-01 -> 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
1 728 465 685 1,110 1,390 938 576 164 97 163 371 376
2 606 472 687 1,080 1,330 1,010 491 153 122 162 327 444
3 510 472 689 1,030 1,070 1,020 471 181 170 247 331 461
4 531 513 892 1,000 875 753 404 214 179 489 294 736
5 675 593 1,060 954 807 706 365 179 159 326 265 436
6 663 595 945 1,060 803 661 381 235 135 212 236 364
7 534 599 917 1,040 819 667 349 251 147 194 210 374
8 485 510 880 949 882 727 331 257 169 185 187 385
9 572 515 862 916 981 683 663 236 154 167 175 372
10 537 614 971 902 979 612 673 229 151 151 200 350
11 499 567 1,210 949 999 646 616 184 148 148 217 366
12 487 584 1,260 1,060 1,110 717 467 136 125 137 226 405
13 563 647 1,080 1,110 1,080 799 417 135 134 136 248 400
14 705 636 1,010 1,050 1,260 861 408 126 413 146 276 387
15 613 590 1,010 1,030 1,200 838 372 182 667 156 284 401
16 494 540 966 1,050 1,060 820 490 255 503 154 279 412
17 417 616 901 1,060 1,060 734 457 218 328 209 289 389
18 378 723 914 1,140 1,120 755 427 142 209 225 301 358
19 356 814 985 1,050 1,140 925 330 130 210 231 378 321
20 409 757 1,020 1,060 941 1,110 384 118 190 188 431 304
21 441 848 955 1,060 829 1,060 320 123 151 156 280 320
22 455 940 896 1,100 765 1,080 299 103 175 141 254 373
23 509 1,030 933 1,110 762 999 318 93 212 171 263 400
24 585 1,020 925 1,050 821 829 273 122 318 208 249 433
25 610 948 894 1,070 828 761 249 120 360 261 256 515
26 593 784 831 1,130 892 715 296 116 264 246 274 541
27 550 784 779 1,050 996 686 265 97 202 250 313 552
28 554 767 870 1,070 1,030 679 243 94 203 229 478 532
29 462 497 975 1,080 981 688 221 109 198 213 447 817
30 457   1,000 1,270 888 658 205 118 176 287 392 847
31 481   1,110   921   194 126   369   778