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USGS Daily Statistics for Montana

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Questions or concerns about USGS data and data products in Montana and Wyoming can be directed to the Wyoming-Montana Water Science Center Data Management Section.


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 12331800 Clark Fork near Drummond MT


Granite County, Montana
Hydrologic Unit Code 17010202
Latitude  46°42'42.89", Longitude 113°19'50.81" NAD83
Drainage area 2,516  square miles
Gage datum 3,810 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 1992-10-01 -> 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
1 522 598 558 742 1,060 1,730 1,150 414 363 520 628 580
2 521 590 565 748 1,050 1,760 1,140 405 368 529 628 583
3 503 536 566 745 1,040 1,760 1,090 395 363 535 632 582
4 501 526 570 737 1,060 1,790 1,080 379 363 547 635 563
5 493 536 575 762 1,080 1,830 1,060 376 367 559 636 547
6 489 532 589 792 1,100 1,830 997 379 374 570 634 527
7 494 551 612 807 1,130 1,860 949 379 382 574 630 518
8 516 647 629 850 1,170 1,860 910 382 393 579 633 512
9 530 796 640 872 1,160 1,900 872 368 413 586 635 510
10 519 697 691 887 1,160 1,870 838 361 420 591 630 512
11 507 586 727 902 1,180 1,890 824 351 419 599 623 524
12 491 550 721 904 1,200 1,840 801 348 415 608 616 537
13 491 550 768 878 1,200 1,780 776 346 419 613 616 547
14 511 558 775 870 1,190 1,820 761 346 419 624 619 536
15 528 563 732 870 1,200 1,730 734 342 423 631 613 533
16 516 579 744 849 1,250 1,680 706 342 432 633 611 522
17 525 572 747 840 1,320 1,720 670 345 439 640 614 519
18 538 568 715 847 1,430 1,790 648 344 443 639 609 496
19 541 565 733 861 1,460 1,790 621 339 451 639 606 492
20 540 570 753 881 1,490 1,790 604 334 464 646 605 493
21 529 558 733 915 1,520 1,710 582 337 472 649 601 504
22 514 551 734 948 1,520 1,620 558 352 477 643 591 490
23 508 556 773 982 1,540 1,560 540 355 483 640 581 474
24 502 525 766 1,010 1,550 1,480 520 358 488 638 575 470
25 513 520 747 1,040 1,620 1,410 500 356 487 630 577 472
26 520 501 741 1,040 1,670 1,350 480 355 488 628 579 474
27 540 505 747 1,040 1,680 1,320 473 358 492 627 582 472
28 516 518 729 1,030 1,690 1,250 470 358 493 631 584 480
29 489 590 732 1,040 1,700 1,210 454 361 497 631 581 489
30 497   714 1,050 1,700 1,190 437 361 504 627 578 492
31 502   723   1,710   427 358   626   491