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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
1 736 470 694 1,130 1,410 947 580 162 97 163 376 381
2 613 478 695 1,090 1,350 1,020 495 153 122 162 331 449
3 515 477 698 1,040 1,080 1,030 475 181 170 247 335 467
4 537 518 902 1,010 882 758 407 215 179 489 297 745
5 683 600 1,070 959 813 704 368 180 159 326 268 441
6 671 602 951 1,070 809 647 384 237 135 212 238 369
7 540 606 924 1,040 826 656 352 254 147 194 211 379
8 490 516 887 954 890 722 334 260 169 185 188 390
9 579 521 870 923 991 681 669 238 154 167 177 376
10 543 621 980 908 989 611 679 231 151 151 202 354
11 505 574 1,220 957 1,010 647 621 186 148 148 219 371
12 492 591 1,280 1,070 1,120 721 472 137 125 137 229 410
13 570 655 1,090 1,120 1,090 804 421 136 134 136 251 405
14 713 643 1,020 1,060 1,270 867 412 127 413 146 279 392
15 621 597 1,020 1,040 1,220 838 376 183 667 156 287 405
16 500 547 976 1,060 1,070 821 495 258 503 154 282 417
17 422 623 909 1,070 1,070 737 462 220 328 209 292 394
18 382 732 923 1,150 1,130 755 432 143 209 225 305 362
19 361 824 995 1,060 1,150 913 334 131 210 231 383 325
20 413 766 1,030 1,070 950 1,100 388 119 190 188 437 308
21 446 858 964 1,070 836 1,060 323 125 151 156 283 323
22 460 952 904 1,110 770 1,080 302 104 175 141 257 378
23 515 1,050 943 1,120 767 1,000 321 94 212 171 266 405
24 592 1,030 935 1,050 827 833 275 123 318 208 252 439
25 617 960 903 1,070 835 766 252 122 360 261 259 522
26 600 794 839 1,140 900 720 298 118 264 246 278 548
27 557 794 787 1,060 1,010 690 267 98 202 250 316 559
28 561 777 880 1,080 1,040 684 242 94 203 231 484 538
29 467 497 985 1,090 990 693 220 109 198 215 452 827
30 462   1,010 1,280 896 663 204 118 176 290 397 858
31 486   1,130   930   192 126   373   788