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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 07195430 Illinois River South of Siloam Springs, AR


Benton County, Arkansas
Hydrologic Unit Code 11110103
Latitude  36°06'31", Longitude  94°32'00" NAD83
Drainage area 575  square miles
Gage datum 913.14 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 1994-10-01 -> 2024-09-30)

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
1 673 648 631 1,190 1,410 748 797 308 210 247 605 951
2 617 526 569 808 1,310 787 550 269 239 237 469 611
3 589 498 932 795 1,470 668 983 274 287 274 434 506
4 992 638 932 910 1,670 633 642 310 432 243 395 475
5 1,590 644 752 761 3,090 681 527 254 286 300 395 476
6 954 612 642 736 1,630 598 468 264 250 1,070 390 440
7 697 738 580 686 1,220 848 472 259 227 703 1,010 469
8 764 664 731 1,080 1,020 664 587 397 223 343 829 444
9 640 710 790 797 1,090 612 674 423 334 937 716 445
10 574 594 819 1,320 1,420 623 778 354 320 725 466 441
11 922 677 746 973 1,400 570 548 324 255 791 424 442
12 726 691 655 826 1,060 525 430 285 231 485 393 408
13 986 723 826 1,130 1,050 527 863 331 226 545 354 556
14 895 637 1,040 929 955 507 572 570 436 591 350 758
15 700 783 989 745 980 561 466 400 409 432 349 660
16 562 731 888 687 1,010 516 640 314 277 366 366 717
17 509 1,010 962 639 990 741 523 405 271 325 485 1,000
18 708 757 1,150 811 854 792 485 419 347 295 552 1,080
19 665 594 2,010 909 706 945 371 363 280 279 398 661
20 534 635 1,980 648 1,060 622 318 340 263 285 351 549
21 524 1,240 1,230 662 1,100 1,080 310 305 258 302 338 582
22 510 801 1,160 1,310 1,040 943 406 299 361 300 431 584
23 529 709 999 1,480 1,020 753 354 328 457 306 390 485
24 500 1,560 1,060 2,640 1,960 860 315 321 505 387 613 502
25 603 1,180 1,250 2,910 1,420 654 360 258 395 518 830 514
26 627 775 1,210 2,570 1,460 530 319 258 571 413 540 479
27 523 755 1,080 1,410 1,130 559 310 264 764 428 544 2,220
28 566 754 1,140 1,850 1,180 697 299 252 331 461 667 2,020
29 556 371 1,050 2,320 877 972 294 227 289 568 596 728
30 629   1,030 3,150 951 808 350 243 257 829 1,110 612
31 615   1,110   791   405 222   561   641