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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 -> 2021-09-30)

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 4,790 10,000 5,120 1,070 542 549 632 468
2 446 771 467 1,310 4,870 9,940 4,780 1,030 536 541 638 507
3 436 674 467 1,310 5,030 10,200 4,560 1,000 524 533 646 567
4 427 601 463 1,320 5,310 10,300 4,430 963 511 522 656 604
5 423 551 472 1,370 5,550 10,200 4,280 924 504 509 673 587
6 424 514 502 1,470 5,820 10,400 4,070 892 506 497 657 547
7 425 487 504 1,570 6,070 10,400 3,850 866 511 490 640 514
8 422 471 504 1,650 6,180 10,000 3,630 841 508 490 899 488
9 424 452 506 1,790 6,330 9,640 3,410 812 526 499 796 478
10 415 451 511 1,950 6,490 9,130 3,180 785 527 505 621 494
11 397 451 509 2,030 6,600 8,570 3,010 762 515 513 603 511
12 394 453 504 2,110 6,660 8,150 2,850 739 524 526 670 488
13 402 465 507 2,220 6,990 8,230 2,730 724 538 532 740 443
14 423 479 517 2,300 7,510 8,290 2,650 708 519 539 723 430
15 459 484 518 2,330 7,770 8,110 2,480 698 524 551 702 441
16 546 491 526 2,250 8,220 8,160 2,310 696 536 555 695 433
17 652 501 573 2,260 8,670 8,120 2,180 688 539 578 688 457
18 618 494 613 2,340 8,960 7,940 2,060 670 573 573 658 461
19 575 485 625 2,410 9,110 7,680 1,970 650 604 562 632 461
20 542 486 607 2,600 9,230 7,490 1,870 635 587 565 608 454
21 519 492 601 2,930 9,380 7,250 1,760 628 581 575 605 457
22 508 521 596 3,260 9,720 7,270 1,660 615 581 583 591 483
23 494 509 629 3,660 9,820 7,160 1,580 606 573 582 568 514
24 478 502 662 4,010 9,780 6,880 1,490 606 564 579 584 531
25 475 492 664 4,220 9,680 6,570 1,430 599 558 581 647 529
26 467 485 660 4,170 9,930 6,250 1,370 585 556 601 646 563
27 458 476 827 4,160 10,100 5,920 1,310 570 550 607 597 693
28 449 474 873 4,200 10,100 5,590 1,260 560 540 628 568 680
29 449 538 905 4,410 10,200 5,430 1,200 557 524 660 564 598
30 484   979 4,640 10,300 5,410 1,150 549 519 653 615 545
31 727   1,070   10,200   1,110 546   613   513