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USGS Surface-Water 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 1,090 1,090 1,530 2,190 1,090 812 411 249 968 1,050 995
2 1,140 1,040 1,110 1,370 1,980 1,110 788 446 265 888 932 855
3 965 1,020 1,290 1,270 2,020 1,180 746 411 312 567 833 765
4 898 848 1,380 1,760 2,270 1,080 817 356 330 527 1,040 877
5 1,240 835 1,220 1,610 1,880 1,100 647 369 377 518 1,150 886
6 1,280 793 1,190 1,380 1,760 1,080 570 370 322 480 1,010 794
7 972 833 1,160 1,320 1,700 1,180 523 392 286 782 884 778
8 871 860 1,090 1,210 1,880 1,400 542 347 266 570 1,070 698
9 892 830 1,110 1,490 1,670 1,590 578 431 262 589 933 634
10 878 849 1,120 1,440 2,650 1,310 642 442 319 777 780 779
11 933 904 1,290 1,620 3,380 1,250 606 421 355 654 756 903
12 966 802 1,480 1,570 2,110 1,270 545 435 281 607 653 920
13 910 870 1,370 1,540 1,610 1,110 731 469 265 497 607 903
14 1,150 983 1,350 1,490 1,420 1,080 760 439 319 567 641 990
15 1,210 1,080 1,610 2,080 1,340 1,020 633 829 485 582 716 1,110
16 981 1,270 1,570 1,880 1,430 1,050 508 661 441 574 614 1,160
17 828 1,400 1,390 1,520 1,510 1,130 521 403 391 554 674 1,080
18 785 1,510 1,340 1,470 1,530 1,120 485 389 376 492 862 1,080
19 833 1,390 1,920 1,700 1,500 1,050 466 372 363 445 945 992
20 873 1,220 2,820 1,780 1,690 1,030 433 339 506 423 1,010 890
21 838 1,510 2,110 1,820 1,770 946 412 319 496 424 793 1,000
22 799 1,480 1,620 1,770 1,510 1,150 415 291 418 465 750 1,230
23 808 1,270 1,390 1,800 1,370 1,050 477 284 415 423 828 926
24 737 1,490 1,400 1,950 1,770 988 552 291 434 415 807 745
25 769 1,730 1,670 2,330 2,010 910 441 291 455 515 1,130 732
26 835 1,280 1,650 2,450 2,040 797 664 264 458 549 1,310 840
27 765 1,150 1,440 1,940 1,520 767 531 267 579 597 916 1,280
28 744 1,080 1,550 1,580 1,370 761 416 266 598 674 924 2,300
29 771 773 1,630 2,000 1,330 859 425 264 459 637 881 1,530
30 955   1,720 2,380 1,230 882 416 265 655 661 857 985
31 1,210   1,570   1,150   419 252   1,080   924