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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 05591200 KASKASKIA RIVER AT COOKS MILLS, IL


Coles County, Illinois
Hydrologic Unit Code 07140201
Latitude  39°35'00.5", Longitude  88°24'49.7" NAD83
Drainage area 473  square miles
Gage datum 616.89 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 1970-10-01 -> 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
1 824 455 684 861 899 566 430 225 97 136 177 481
2 764 468 633 829 918 554 384 256 86 133 220 478
3 674 457 649 796 883 576 350 297 79 129 236 469
4 619 445 720 754 889 627 356 289 78 146 256 462
5 629 458 771 740 851 693 383 236 74 177 241 446
6 668 510 791 741 776 672 406 186 64 188 217 422
7 602 571 753 695 751 716 402 154 52 158 200 412
8 516 569 688 645 744 700 359 136 55 143 185 401
9 438 527 666 613 778 676 330 111 73 133 171 389
10 408 484 673 582 781 630 336 88 94 138 168 367
11 454 469 675 598 792 588 332 82 102 147 184 395
12 499 486 724 727 823 584 342 95 88 154 242 437
13 529 473 750 821 889 569 374 102 76 148 277 468
14 536 463 761 827 871 570 366 106 73 150 274 461
15 532 432 739 773 829 586 329 112 83 147 282 473
16 499 419 715 754 832 587 300 128 108 141 279 494
17 449 451 679 726 769 573 262 139 142 135 306 506
18 416 548 655 719 822 528 215 126 140 136 360 490
19 408 605 666 764 957 553 176 104 115 156 383 450
20 435 643 714 746 905 582 164 88 95 157 417 423
21 464 756 745 706 805 587 188 78 83 146 403 396
22 516 917 709 749 734 584 226 67 71 138 362 403
23 564 1,080 647 808 669 654 224 55 67 136 324 405
24 568 1,110 600 768 618 638 199 47 71 149 304 410
25 567 1,010 595 692 586 614 186 47 83 174 308 477
26 552 859 599 698 620 558 193 47 110 194 332 529
27 516 794 610 697 739 564 213 63 123 211 374 643
28 490 738 671 720 785 586 222 77 136 207 419 736
29 453 330 733 790 722 551 211 81 147 188 450 780
30 432   774 865 663 489 204 101 142 170 469 852
31 433   834   605   213 100   160   863