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USGS Daily Statistics for the Nation

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 water year of record in, ft3/s   (Calculation Period 1897-10-01 -> 2023-09-30)

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
1 540 568 644 1,210 3,320 5,990 3,030 1,010 691 629 657 648
2 532 576 653 1,260 3,400 5,970 2,920 995 689 640 659 658
3 527 578 643 1,290 3,490 6,030 2,810 973 684 634 657 661
4 526 568 637 1,320 3,620 6,100 2,710 951 675 632 661 666
5 531 573 636 1,360 3,780 6,090 2,620 932 667 626 665 659
6 542 579 643 1,450 3,910 6,020 2,510 916 665 626 669 638
7 563 575 645 1,540 4,100 5,900 2,400 900 662 627 669 618
8 568 586 658 1,590 4,250 5,740 2,290 884 661 627 686 614
9 567 613 667 1,650 4,350 5,620 2,200 866 661 632 683 608
10 562 602 677 1,720 4,460 5,500 2,120 853 661 629 674 608
11 550 604 701 1,820 4,570 5,320 2,030 839 659 629 667 611
12 544 603 724 1,880 4,670 5,170 1,950 828 656 635 657 612
13 549 594 738 1,970 4,810 5,080 1,870 816 655 636 657 613
14 555 592 742 2,020 4,890 5,040 1,810 807 655 640 661 616
15 561 589 750 2,070 4,980 4,900 1,740 792 654 639 661 609
16 581 597 790 2,110 5,140 4,820 1,670 784 653 643 655 598
17 583 603 833 2,150 5,330 4,790 1,600 776 651 645 654 587
18 581 602 849 2,190 5,500 4,700 1,540 767 652 643 650 579
19 572 602 869 2,270 5,620 4,590 1,480 756 652 642 647 570
20 563 617 877 2,390 5,700 4,470 1,440 749 650 643 642 571
21 563 628 889 2,550 5,810 4,350 1,380 745 650 642 640 568
22 563 623 921 2,660 5,840 4,190 1,330 741 647 644 640 568
23 560 615 956 2,790 5,880 4,030 1,280 741 645 644 635 572
24 556 615 980 2,890 5,960 3,890 1,240 736 642 647 648 578
25 559 612 988 2,990 6,020 3,730 1,200 729 638 646 664 575
26 549 605 998 3,070 6,090 3,590 1,170 724 637 654 666 575
27 550 612 1,020 3,120 6,140 3,450 1,130 717 637 655 656 576
28 543 625 1,060 3,160 6,140 3,290 1,100 711 638 658 646 565
29 536 627 1,090 3,190 6,090 3,180 1,080 702 635 654 639 550
30 538   1,120 3,260 6,080 3,100 1,050 695 632 653 643 550
31 560   1,160   6,040   1,030 692   656   553