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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 07151000 Salt Fork Arkansas River at Tonkawa, OK


Kay County, Oklahoma
Hydrologic Unit Code 11060004
Latitude  36°40'19", Longitude  97°18'33" NAD27
Drainage area 4,470  square miles
Contributing drainage area 4,470  square miles
Gage datum 930.14 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 1941-10-01 -> 2025-09-30)

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
1 369 579 730 1,290 1,840 1,560 2,070 686 499 1,000 975 385
2 367 502 682 1,280 1,970 1,520 1,970 788 510 1,170 1,470 375
3 360 446 713 1,190 1,800 1,420 1,670 763 464 1,650 1,460 367
4 372 491 820 1,050 1,440 1,480 1,410 856 503 1,530 1,300 461
5 463 561 870 947 1,320 1,620 1,440 805 511 1,600 1,170 627
6 462 526 766 978 1,250 1,830 1,250 798 538 1,350 910 576
7 412 505 678 956 1,310 1,950 1,210 696 516 1,020 683 517
8 390 516 676 935 1,670 1,800 1,130 610 553 765 660 419
9 369 515 766 940 1,850 1,790 1,010 585 463 750 646 380
10 366 482 957 1,010 1,840 1,840 967 548 403 816 573 400
11 364 480 1,120 1,110 1,600 1,900 1,010 571 385 1,340 525 362
12 366 490 1,030 1,070 1,320 1,780 910 713 420 1,370 473 348
13 371 542 917 1,070 1,230 1,690 962 691 806 1,020 429 345
14 355 502 917 1,130 1,290 1,750 1,110 719 921 915 405 357
15 360 514 916 1,200 1,240 1,770 1,140 738 893 850 536 403
16 399 604 988 1,290 1,470 1,600 912 654 797 793 653 404
17 423 578 1,310 1,140 1,690 1,510 852 612 577 742 782 375
18 432 558 1,310 1,010 1,940 1,520 760 751 492 792 793 340
19 444 516 1,270 1,160 2,200 1,550 762 798 586 649 729 357
20 434 515 1,220 1,250 2,130 1,390 727 714 511 565 702 494
21 425 671 1,140 1,220 2,250 1,330 684 590 516 558 838 477
22 452 700 1,040 1,220 2,500 1,290 605 560 497 509 724 420
23 458 618 1,080 1,390 2,150 1,220 617 548 542 480 575 386
24 483 650 1,410 1,330 1,930 1,420 603 538 655 517 518 426
25 440 641 1,420 1,550 2,170 1,670 528 534 632 510 547 467
26 402 578 1,260 1,830 2,340 1,680 458 508 723 576 547 411
27 379 621 1,160 1,920 2,450 1,550 442 520 773 574 473 421
28 366 699 1,080 1,590 2,450 1,540 397 442 837 540 416 398
29 388 354 1,070 1,360 2,270 1,580 417 410 1,030 543 384 389
30 480   1,090 1,550 1,860 1,880 611 473 1,080 572 393 375
31 686   1,270   1,720   635 507   688   370