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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
1 523 598 566 739 1,050 1,700 1,130 408 363 520 631 581
2 519 591 569 745 1,040 1,730 1,120 399 368 531 631 583
3 500 542 568 742 1,030 1,720 1,070 388 363 538 637 583
4 501 533 571 740 1,040 1,760 1,060 374 363 551 641 564
5 495 539 575 774 1,060 1,790 1,040 371 367 562 641 550
6 490 534 588 801 1,080 1,800 978 379 374 573 639 532
7 494 553 610 812 1,110 1,820 931 379 382 578 635 523
8 515 646 626 851 1,150 1,830 892 382 393 582 637 517
9 528 790 637 871 1,140 1,860 856 368 413 588 639 514
10 519 694 687 885 1,140 1,840 822 361 420 593 632 515
11 507 586 724 899 1,160 1,860 807 351 419 601 626 527
12 482 551 719 900 1,180 1,810 785 348 415 610 619 540
13 478 550 764 875 1,170 1,750 761 346 419 615 619 550
14 497 558 770 870 1,170 1,780 746 346 419 625 622 536
15 517 562 728 872 1,180 1,690 720 342 423 631 615 533
16 507 577 739 851 1,230 1,650 692 342 432 634 614 523
17 518 569 744 843 1,300 1,690 658 345 439 641 616 521
18 532 566 714 848 1,400 1,760 636 344 443 639 611 498
19 536 564 732 860 1,430 1,760 610 339 451 639 608 497
20 536 569 752 878 1,460 1,750 593 334 464 646 607 498
21 526 557 736 911 1,490 1,680 571 337 472 648 603 507
22 512 551 738 942 1,490 1,590 548 352 477 643 593 494
23 508 555 773 974 1,510 1,520 531 355 483 640 584 478
24 501 525 765 1,000 1,530 1,450 511 358 488 639 578 473
25 513 523 747 1,030 1,590 1,370 492 356 487 632 577 472
26 520 525 740 1,030 1,630 1,320 472 355 488 631 578 471
27 539 515 746 1,030 1,650 1,290 465 358 492 630 582 468
28 517 522 728 1,020 1,650 1,230 462 358 493 633 583 480
29 493 609 732 1,020 1,670 1,190 446 361 497 633 581 491
30 500   713 1,040 1,680 1,170 430 361 504 628 577 493
31 505   720   1,680   421 358   627   493