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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 07196500 Illinois River near Tahlequah, OK


Cherokee County, Oklahoma
Hydrologic Unit Code 11110103
Latitude  35°55'22", Longitude  94°55'24" NAD27
Drainage area 950  square miles
Contributing drainage area 950  square miles
Gage datum 664.14 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 82 - 83 years of record in, ft3/s   (Calculation Period 1935-10-01 -> 2018-09-30)

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
1 938 1,090 1,100 1,510 2,130 1,030 805 400 236 989 997 889
2 1,060 1,030 1,120 1,350 1,820 1,040 779 438 253 907 897 797
3 900 1,020 1,300 1,260 1,970 1,140 732 402 304 570 803 723
4 833 838 1,390 1,770 2,230 1,050 810 346 324 528 1,030 853
5 1,130 787 1,240 1,610 1,780 1,060 636 359 374 521 1,150 869
6 1,230 755 1,210 1,370 1,710 1,060 558 361 317 481 998 778
7 937 804 1,180 1,320 1,630 1,120 510 384 280 456 836 766
8 836 831 1,100 1,200 1,840 1,250 520 338 260 400 917 686
9 861 801 1,130 1,500 1,620 1,530 564 425 256 542 871 621
10 849 828 1,110 1,450 2,650 1,290 632 430 315 754 741 775
11 803 887 1,290 1,640 3,420 1,230 594 411 353 587 729 907
12 758 775 1,490 1,580 2,110 1,260 534 429 276 459 628 927
13 804 809 1,370 1,540 1,600 1,100 730 463 260 444 581 909
14 1,090 930 1,340 1,460 1,400 1,080 761 425 317 531 621 1,000
15 1,180 1,050 1,510 2,060 1,320 1,010 632 836 491 544 703 1,120
16 954 1,260 1,510 1,870 1,380 1,050 503 659 445 537 597 1,180
17 800 1,400 1,360 1,510 1,450 1,130 516 392 393 526 662 1,090
18 736 1,520 1,320 1,470 1,500 1,120 464 375 378 468 861 992
19 759 1,400 1,830 1,710 1,480 1,050 407 348 364 425 950 817
20 804 1,220 2,500 1,790 1,680 1,030 410 325 515 406 1,020 844
21 791 1,530 1,940 1,850 1,750 940 396 308 504 406 794 984
22 762 1,490 1,590 1,790 1,440 1,160 402 279 420 438 749 1,230
23 779 1,270 1,350 1,830 1,310 966 463 273 414 400 823 921
24 709 1,510 1,370 1,980 1,750 743 542 276 431 390 798 735
25 729 1,760 1,650 2,340 2,010 761 431 275 427 399 1,140 725
26 748 1,290 1,620 2,470 1,990 750 663 250 431 426 1,330 840
27 709 1,160 1,400 1,950 1,400 736 525 245 537 510 916 1,300
28 707 1,090 1,530 1,560 1,270 741 408 248 583 611 926 2,330
29 743 756 1,620 1,590 1,220 847 417 249 448 556 881 1,520
30 937   1,720 2,160 1,130 875 407 253 658 542 825 954
31 1,200   1,550   1,060   409 240   981   900