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USGS Daily Statistics for Montana

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Questions or concerns about USGS streamflow data in Montana and Wyoming can be directed to Kirk Miller (kmiller@usgs.gov; 307-775-9168).

Updated April 16, 2018 - USGS streamflow monitoring was reactivated with partner funding at the following site effective April 16, 2018: USGS water-resources monitoring could be discontinued at the following sites effective June 30, 2018:
  • 12324200 Clark Fork at Deer Lodge, MT (annual streamflow)
  • 12324680 Clark Fork at Gold Creek, MT (annual streamflow)
USGS water-resources monitoring will be discontinued at the following sites effective October 1, 2018:
  • 06024540 Big Hole R bel Mudd Cr nr Wisdom, MT (seasonal water temperature)
  • 06040000 Madison R nr Cameron, MT (seasonal streamflow and water temperature)
  • 06114700 Judith R nr mouth nr Winifred, MT (seasonal streamflow)
  • 06308400 Pumpkin Cr nr Miles City, MT (annual streamflow, water temperature, and sampling)
USGS monitoring activities at these sites were funded by partner agencies. Lack of partner funding for these sites resulted in discontinuation of all streamgaging activities.

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 12340000 Blackfoot River near Bonner MT


Missoula County, Montana
Hydrologic Unit Code 17010203
Latitude  46°53'57.88", Longitude 113°45'22.75" NAD83
Drainage area 2,287  square miles
Gage datum 3,344.76 feet above NGVD29
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00060, Discharge, cubic feet per second,
Day of
month
Mean of daily mean values for each day for 81 - 85 years of record in, ft3/s   (Calculation Period 1897-10-01 -> 2018-09-30)

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
1 540 572 642 1,190 3,150 5,870 3,050 1,010 693 630 654 643
2 529 579 650 1,240 3,230 5,870 2,930 1,000 692 640 655 654
3 524 579 637 1,270 3,340 5,950 2,820 977 686 634 652 653
4 522 568 629 1,310 3,480 6,030 2,730 955 678 632 656 660
5 526 573 629 1,340 3,640 6,020 2,640 936 669 626 658 655
6 539 578 637 1,420 3,770 5,970 2,530 921 668 626 661 633
7 560 574 640 1,520 3,930 5,870 2,420 905 664 628 662 613
8 565 584 653 1,570 4,080 5,720 2,310 888 663 628 682 608
9 565 610 663 1,620 4,190 5,620 2,210 869 661 632 680 602
10 560 599 675 1,680 4,300 5,500 2,130 856 660 629 672 603
11 549 601 701 1,790 4,410 5,310 2,040 842 658 629 664 607
12 542 602 725 1,850 4,530 5,170 1,960 831 656 636 654 606
13 546 594 741 1,950 4,700 5,100 1,880 819 656 636 654 608
14 553 588 746 2,010 4,780 5,070 1,820 811 656 639 657 612
15 560 583 754 2,060 4,880 4,940 1,750 795 655 638 657 603
16 580 593 790 2,110 5,020 4,860 1,680 787 654 643 650 594
17 580 599 834 2,140 5,200 4,830 1,600 780 653 645 650 585
18 578 601 849 2,190 5,370 4,730 1,550 771 653 642 647 578
19 568 607 868 2,270 5,490 4,600 1,490 759 653 640 643 567
20 560 622 875 2,380 5,580 4,480 1,450 752 651 641 637 565
21 560 634 886 2,510 5,690 4,350 1,390 746 651 639 634 564
22 560 633 921 2,620 5,750 4,190 1,340 742 647 641 636 566
23 558 627 956 2,740 5,810 4,030 1,290 742 645 640 629 572
24 554 622 976 2,830 5,900 3,900 1,240 737 642 644 637 581
25 557 616 981 2,920 5,970 3,750 1,200 730 639 644 651 577
26 548 609 989 2,990 6,020 3,610 1,170 725 638 653 656 576
27 549 612 1,010 3,040 6,040 3,480 1,140 717 637 652 648 576
28 543 623 1,050 3,050 6,010 3,310 1,110 711 639 655 639 564
29 539 630 1,070 3,060 5,960 3,200 1,080 702 635 652 633 548
30 541   1,100 3,100 5,970 3,120 1,060 696 632 650 638 548
31 564   1,140   5,930   1,040 693   653   551