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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 1,390 947 580 162 97 163 371 376
2 606 472 687 1,080 1,330 1,020 495 153 122 162 327 444
3 510 472 689 1,030 1,070 1,030 475 181 170 247 331 461
4 531 513 892 1,000 875 758 407 215 179 489 294 736
5 675 593 1,060 954 807 704 368 180 159 326 265 436
6 663 595 945 1,060 803 647 384 237 135 212 236 364
7 534 599 917 1,040 819 656 352 254 147 194 210 374
8 485 510 880 949 882 722 334 260 169 185 187 385
9 572 515 862 916 981 681 669 238 154 167 175 372
10 537 614 971 902 979 611 679 231 151 151 200 350
11 499 567 1,210 949 999 647 621 186 148 148 217 366
12 487 584 1,260 1,060 1,110 721 472 137 125 137 226 405
13 563 647 1,080 1,110 1,080 804 421 136 134 136 248 400
14 705 636 1,010 1,050 1,260 867 412 127 413 146 276 387
15 613 590 1,010 1,030 1,200 838 376 183 667 156 284 401
16 494 540 966 1,050 1,060 821 495 258 503 154 279 412
17 417 616 901 1,060 1,060 737 462 220 328 209 289 389
18 378 723 914 1,140 1,120 755 432 143 209 225 301 358
19 356 814 985 1,050 1,150 913 334 131 210 231 378 321
20 409 757 1,020 1,060 950 1,100 388 119 190 188 431 304
21 441 848 955 1,060 836 1,060 323 125 151 156 280 320
22 455 940 896 1,100 770 1,080 302 104 175 141 254 373
23 509 1,030 933 1,110 767 1,000 321 94 212 171 263 400
24 585 1,020 925 1,050 827 833 275 123 318 208 249 433
25 610 948 894 1,070 835 766 252 122 360 261 256 515
26 593 784 831 1,130 900 720 298 118 264 246 274 541
27 550 784 779 1,050 1,010 690 267 98 202 250 313 552
28 554 767 870 1,070 1,040 684 242 94 203 229 478 532
29 462 497 975 1,080 990 693 220 109 198 213 447 817
30 457   1,000 1,270 896 663 204 118 176 287 392 847
31 481   1,110   930   192 126   369   778