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USGS Daily Statistics for Oklahoma

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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 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 81 - 82 years of record in, ft3/s   (Calculation Period 1935-10-01 -> 2017-09-30)

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
1 945 1,100 1,050 1,470 2,150 1,040 812 398 234 998 1,010 895
2 1,070 1,040 1,090 1,330 1,840 1,050 785 438 251 915 904 801
3 908 1,030 1,290 1,240 1,970 1,140 737 403 303 574 809 727
4 840 845 1,380 1,760 2,110 1,060 813 346 324 531 1,040 859
5 1,140 793 1,230 1,600 1,710 1,070 636 360 375 524 1,160 875
6 1,240 761 1,200 1,370 1,680 1,070 558 361 317 484 1,010 784
7 945 811 1,180 1,320 1,610 1,120 510 385 279 458 843 772
8 843 837 1,100 1,200 1,830 1,250 521 337 259 401 925 691
9 869 807 1,130 1,500 1,610 1,550 566 425 255 545 879 625
10 856 835 1,120 1,450 2,660 1,300 636 432 315 760 747 781
11 809 894 1,290 1,640 3,440 1,250 599 412 354 591 735 915
12 763 781 1,500 1,590 2,120 1,280 537 431 276 461 632 935
13 810 815 1,380 1,550 1,600 1,110 738 466 259 446 585 917
14 1,100 938 1,340 1,470 1,410 1,090 771 425 317 535 625 1,010
15 1,190 1,060 1,520 2,070 1,330 1,020 639 836 494 547 709 1,140
16 962 1,270 1,520 1,880 1,380 1,060 506 657 448 541 601 1,190
17 807 1,410 1,370 1,520 1,460 1,150 520 385 395 529 667 1,100
18 742 1,530 1,330 1,480 1,500 1,130 466 349 379 470 868 1,000
19 765 1,410 1,850 1,720 1,480 1,070 407 331 365 426 958 824
20 811 1,230 2,520 1,800 1,690 1,040 409 310 516 407 1,030 852
21 797 1,510 1,960 1,860 1,770 950 396 298 506 408 800 993
22 767 1,420 1,600 1,800 1,450 1,180 403 272 422 440 755 1,250
23 784 1,240 1,370 1,830 1,310 978 465 267 415 399 830 928
24 711 1,380 1,380 1,980 1,750 750 547 271 433 385 804 739
25 731 1,400 1,660 2,350 2,010 769 433 271 428 397 1,150 726
26 752 1,160 1,630 2,480 2,000 757 672 246 433 426 1,340 844
27 712 1,110 1,390 1,950 1,400 744 530 242 541 511 924 1,310
28 711 1,040 1,370 1,560 1,270 749 411 245 587 614 934 2,350
29 748 756 1,500 1,600 1,230 857 420 246 450 559 889 1,540
30 944   1,620 2,180 1,130 887 408 250 663 544 832 962
31 1,210   1,500   1,060   410 237   990   907