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USGS 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°27'16.8", Longitude  89°36'22.2" NAD83
Drainage area 1,073  square miles
Gage datum 476.67 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 1920-10-01 -> 2024-09-30)

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
1 798 744 1,120 1,450 1,630 1,200 914 278 263 313 456 560
2 711 718 996 1,400 1,620 1,170 786 256 324 286 495 602
3 705 739 981 1,300 1,470 1,080 759 254 369 332 508 589
4 709 792 955 1,210 1,380 1,020 675 318 346 377 423 523
5 828 864 933 1,150 1,340 944 610 369 387 455 411 475
6 900 967 913 1,200 1,220 900 779 374 416 415 369 447
7 887 1,080 909 1,300 1,160 877 670 315 382 415 347 469
8 829 1,110 928 1,290 1,190 971 637 240 329 371 334 518
9 795 1,080 1,010 1,220 1,320 899 687 254 398 333 308 510
10 786 965 1,170 1,210 1,420 821 945 228 396 305 334 493
11 887 825 1,320 1,350 1,530 846 980 214 354 268 312 453
12 821 815 1,340 1,470 1,660 1,000 886 199 314 269 302 443
13 837 829 1,310 1,520 1,670 1,070 703 227 284 244 347 517
14 881 862 1,220 1,440 1,660 1,060 612 224 513 231 417 536
15 940 825 1,220 1,410 1,610 1,090 510 204 589 227 419 550
16 924 792 1,260 1,430 1,510 1,130 584 247 592 228 412 522
17 765 842 1,250 1,460 1,530 984 667 238 601 272 423 534
18 648 907 1,220 1,440 1,730 909 642 221 503 287 469 508
19 647 951 1,240 1,410 1,900 1,010 533 198 295 291 474 472
20 650 998 1,280 1,520 1,770 1,140 482 239 277 297 478 442
21 661 1,200 1,210 1,420 1,500 1,260 476 281 247 246 476 452
22 666 1,280 1,130 1,290 1,290 1,150 496 444 262 267 461 498
23 704 1,200 1,190 1,420 1,080 994 488 334 212 308 489 530
24 912 1,170 1,210 1,470 1,100 902 508 342 213 310 482 603
25 972 1,270 1,210 1,470 1,130 850 412 265 232 388 473 637
26 911 1,280 1,200 1,420 1,170 955 412 220 253 360 484 585
27 789 1,390 1,120 1,400 1,330 859 374 220 292 325 538 686
28 758 1,280 1,050 1,370 1,320 939 316 212 274 338 646 806
29 665 1,140 1,090 1,330 1,320 991 283 212 300 303 647 825
30 620   1,180 1,430 1,240 991 316 234 298 420 620 875
31 725   1,320   1,270   296 283   441   931