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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
1 954 1,100 1,060 1,480 1,580 1,030 812 398 234 998 1,010 903
2 1,080 1,050 1,100 1,340 1,750 1,050 785 438 251 915 912 808
3 916 1,030 1,300 1,250 1,930 1,140 737 403 303 574 817 733
4 847 851 1,400 1,780 2,090 1,050 813 346 324 531 1,050 867
5 1,150 799 1,240 1,610 1,680 1,050 636 360 375 524 1,170 884
6 1,260 766 1,220 1,370 1,660 1,040 558 361 317 484 1,020 791
7 954 817 1,190 1,330 1,600 1,120 510 385 279 458 851 779
8 851 844 1,110 1,210 1,830 1,250 521 337 259 401 933 697
9 876 814 1,140 1,510 1,610 1,550 566 425 255 545 887 630
10 864 841 1,130 1,470 2,670 1,300 636 432 315 760 753 788
11 816 902 1,300 1,660 3,470 1,250 599 412 354 591 741 923
12 770 787 1,510 1,600 2,130 1,280 537 431 276 465 637 944
13 817 822 1,390 1,560 1,580 1,110 738 466 259 449 590 925
14 1,110 946 1,350 1,480 1,400 1,090 771 425 317 538 630 1,020
15 1,210 1,070 1,530 2,090 1,320 1,020 639 836 494 549 715 1,150
16 967 1,280 1,530 1,900 1,380 1,060 506 657 448 543 606 1,200
17 808 1,420 1,380 1,530 1,460 1,150 520 385 395 532 672 1,110
18 741 1,540 1,340 1,490 1,500 1,130 466 349 379 473 876 1,010
19 766 1,420 1,870 1,730 1,490 1,070 407 331 365 428 968 832
20 814 1,240 2,550 1,820 1,640 1,040 409 310 516 409 1,040 859
21 801 1,520 1,980 1,870 1,600 950 396 298 506 409 808 1,000
22 771 1,430 1,610 1,700 1,400 1,180 403 272 422 437 761 1,260
23 787 1,250 1,380 1,630 1,290 978 465 267 415 398 837 937
24 708 1,390 1,400 1,940 1,740 750 547 271 433 385 812 746
25 730 1,410 1,680 2,340 2,010 769 433 271 428 397 1,160 732
26 753 1,180 1,630 2,480 2,000 757 672 246 433 427 1,360 851
27 714 1,120 1,390 1,840 1,400 744 530 242 541 514 933 1,320
28 713 1,050 1,370 1,470 1,270 749 411 245 587 618 943 2,380
29 751 756 1,490 1,410 1,220 857 420 246 450 562 897 1,550
30 950   1,630 1,360 1,130 887 408 250 663 548 840 970
31 1,220   1,500   1,060   410 237   999   915