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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 12359800 S F Flathead R ab Twin C nr Hungry Horse MT


Flathead County, Montana
Hydrologic Unit Code 17010209
Latitude  47°58'44.75", Longitude 113°33'38.46" NAD83
Drainage area 1,159  square miles
Gage datum 3,575 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 1964-10-01 -> 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
1 479 832 474 1,290 4,910 9,910 5,040 1,050 536 536 632 468
2 446 771 467 1,310 5,080 9,900 4,720 1,020 529 528 638 507
3 436 674 467 1,310 5,260 10,200 4,500 986 517 521 646 567
4 427 601 463 1,340 5,540 10,300 4,360 949 504 509 656 604
5 423 551 472 1,390 5,820 10,300 4,210 911 499 497 673 587
6 424 514 502 1,480 6,130 10,400 4,010 879 500 486 657 547
7 425 487 504 1,560 6,380 10,300 3,780 854 503 479 640 514
8 422 471 504 1,650 6,380 9,900 3,570 830 500 479 899 488
9 424 452 506 1,790 6,430 9,550 3,360 803 517 487 796 478
10 415 451 511 1,940 6,520 9,120 3,140 776 518 493 621 494
11 397 451 509 2,030 6,580 8,650 2,960 753 507 500 603 511
12 394 453 504 2,120 6,630 8,210 2,800 730 515 512 670 488
13 402 465 507 2,210 6,950 8,230 2,680 714 527 517 740 443
14 423 479 517 2,280 7,450 8,290 2,590 698 509 524 723 430
15 459 484 518 2,300 7,730 8,120 2,430 688 514 535 702 441
16 546 491 526 2,220 8,250 8,130 2,270 685 524 539 695 433
17 652 501 573 2,230 8,800 8,050 2,140 677 527 566 688 457
18 618 494 613 2,310 9,110 7,910 2,020 659 558 560 658 461
19 575 485 625 2,380 9,200 7,690 1,930 640 587 550 632 461
20 542 486 607 2,550 9,250 7,520 1,840 625 572 553 608 454
21 519 492 601 2,860 9,320 7,320 1,730 621 566 563 605 457
22 508 521 596 3,160 9,610 7,280 1,630 610 567 571 591 483
23 494 509 629 3,540 9,660 7,170 1,550 600 560 571 568 514
24 478 502 662 3,860 9,620 6,870 1,470 599 551 568 584 531
25 475 492 664 4,070 9,630 6,520 1,400 592 545 570 647 529
26 467 485 660 4,040 9,890 6,170 1,340 578 542 590 646 563
27 458 476 827 4,050 10,100 5,850 1,280 564 536 595 597 693
28 449 474 873 4,110 10,200 5,550 1,230 554 527 616 568 680
29 449 538 905 4,350 10,200 5,400 1,180 549 512 651 564 598
30 484   979 4,650 10,200 5,350 1,140 542 507 655 615 545
31 727   1,030   10,100   1,090 539   618   513