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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°55'31.97", Longitude  94°55'18.13" NAD83
Drainage area 950  square miles
Contributing drainage area 950  square miles
Gage datum 665.08 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 1935-10-01 -> 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
1 977 1,100 1,090 1,530 2,190 1,090 812 411 249 968 1,050 1,000
2 1,130 1,040 1,110 1,370 1,980 1,110 788 446 265 888 929 859
3 951 1,020 1,290 1,270 2,020 1,180 746 411 312 567 830 768
4 890 851 1,380 1,760 2,270 1,080 817 356 330 527 1,040 881
5 1,230 837 1,220 1,610 1,880 1,100 647 369 377 518 1,150 890
6 1,280 795 1,190 1,380 1,760 1,080 570 370 322 480 1,010 797
7 970 836 1,160 1,320 1,700 1,180 523 392 286 782 885 781
8 869 862 1,090 1,210 1,880 1,400 542 347 266 570 1,080 700
9 891 831 1,110 1,490 1,670 1,590 578 431 262 589 935 635
10 877 849 1,120 1,440 2,650 1,310 642 442 319 777 781 782
11 934 905 1,290 1,620 3,380 1,250 606 421 355 654 757 907
12 968 802 1,480 1,570 2,110 1,270 545 435 281 607 653 925
13 912 872 1,370 1,540 1,610 1,110 731 469 265 497 606 907
14 1,150 983 1,350 1,490 1,420 1,080 760 439 319 567 640 996
15 1,220 1,080 1,610 2,080 1,340 1,020 633 829 485 582 717 1,120
16 984 1,270 1,570 1,880 1,430 1,050 508 661 441 574 613 1,170
17 828 1,400 1,390 1,520 1,510 1,130 521 403 391 554 674 1,080
18 786 1,510 1,340 1,470 1,530 1,120 485 389 376 492 865 991
19 834 1,390 1,920 1,700 1,500 1,050 466 372 363 445 949 821
20 875 1,220 2,820 1,780 1,690 1,030 433 339 506 423 1,020 846
21 840 1,510 2,110 1,820 1,770 946 412 319 496 421 796 979
22 800 1,480 1,620 1,770 1,510 1,150 415 291 418 462 752 1,220
23 809 1,270 1,390 1,800 1,370 1,050 477 284 415 420 832 917
24 738 1,490 1,400 1,950 1,770 988 552 291 434 412 810 736
25 770 1,730 1,670 2,330 2,010 910 441 291 455 513 1,140 725
26 837 1,280 1,650 2,450 2,040 797 664 264 458 548 1,320 836
27 766 1,150 1,440 1,940 1,520 767 531 267 579 597 921 1,280
28 745 1,080 1,550 1,580 1,370 761 416 266 598 672 929 2,310
29 773 773 1,630 2,000 1,330 859 425 264 459 616 885 1,540
30 959   1,720 2,380 1,230 882 416 265 655 642 861 985
31 1,210   1,570   1,150   419 252   1,070   924