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USGS Surface-Water Daily Statistics for Illinois

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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 05568000 MACKINAW RIVER NEAR GREEN VALLEY, IL


Tazewell County, Illinois
Hydrologic Unit Code 07130004
Latitude  40°27'15", Longitude  89°36'22" NAD27
Drainage area 1,073  square miles
Gage datum 477.10 feet above NGVD29
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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 1920-10-01 -> 2022-09-30)

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
1 807 727 1,120 1,390 1,580 1,220 938 281 271 319 461 571
2 718 704 995 1,350 1,610 1,190 804 256 334 292 502 614
3 714 729 983 1,270 1,460 1,100 776 255 382 340 516 597
4 719 786 947 1,190 1,380 1,030 689 325 357 386 430 526
5 841 863 917 1,130 1,320 956 623 377 400 467 416 478
6 916 973 888 1,190 1,190 908 799 383 430 425 374 450
7 903 1,090 891 1,280 1,110 887 687 314 395 426 352 473
8 843 1,120 921 1,280 1,130 988 651 228 341 381 338 524
9 808 1,090 1,010 1,210 1,280 914 701 242 413 341 312 516
10 794 974 1,180 1,200 1,400 835 965 223 411 312 339 498
11 889 831 1,330 1,360 1,530 862 1,000 210 367 274 316 457
12 819 822 1,360 1,490 1,670 1,030 908 196 325 274 307 448
13 834 838 1,330 1,540 1,690 1,100 719 227 291 249 353 524
14 872 872 1,240 1,460 1,690 1,090 625 225 526 235 426 543
15 936 835 1,240 1,430 1,620 1,100 517 205 604 232 427 552
16 929 802 1,280 1,450 1,520 1,150 584 249 608 232 420 520
17 772 853 1,270 1,480 1,550 1,000 674 239 617 276 432 534
18 654 921 1,240 1,460 1,760 927 653 222 516 292 479 510
19 653 967 1,260 1,430 1,940 1,030 543 200 302 296 484 473
20 656 1,010 1,300 1,550 1,810 1,170 492 242 284 302 489 444
21 665 1,230 1,230 1,450 1,530 1,300 487 285 251 250 486 457
22 670 1,300 1,150 1,310 1,310 1,180 508 452 266 272 471 505
23 707 1,210 1,200 1,440 1,100 1,020 501 340 213 315 499 538
24 912 1,170 1,190 1,500 1,120 926 522 349 211 317 492 614
25 939 1,260 1,170 1,500 1,150 872 422 270 231 396 483 647
26 840 1,290 1,160 1,450 1,200 975 418 223 254 366 494 593
27 719 1,410 1,090 1,420 1,360 879 381 224 295 330 549 694
28 694 1,290 1,040 1,370 1,330 965 322 215 278 343 659 816
29 618 1,180 1,090 1,250 1,340 1,020 288 216 305 306 662 836
30 584   1,180 1,350 1,260 1,020 322 240 303 425 634 888
31 702   1,260   1,290   302 292   446   944