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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).


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 06052500 Gallatin River at Logan MT


Gallatin County, Montana
Hydrologic Unit Code 10020008
Latitude  45°53'07.28", Longitude 111°26'17.83" NAD83
Drainage area 1,789  square miles
Gage datum 4,086.42 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 1893-10-01 -> 2020-09-30)

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
1 687 674 712 868 1,350 3,060 2,050 458 539 700 804 786
2 686 677 714 898 1,370 3,120 1,940 454 544 704 805 788
3 679 668 714 883 1,400 3,130 1,850 450 548 709 808 787
4 676 671 710 874 1,460 3,190 1,780 449 543 715 816 776
5 679 692 701 883 1,530 3,270 1,700 451 544 719 818 762
6 682 689 715 901 1,570 3,360 1,590 450 551 722 817 756
7 685 678 724 916 1,640 3,400 1,490 445 558 726 816 748
8 688 671 726 910 1,680 3,400 1,400 443 563 730 820 744
9 688 676 733 929 1,710 3,380 1,310 447 572 729 824 740
10 685 670 746 961 1,740 3,320 1,230 446 578 729 821 741
11 678 678 755 956 1,770 3,300 1,150 447 587 734 821 748
12 672 676 751 964 1,800 3,220 1,090 447 609 743 823 738
13 674 681 757 966 1,860 3,200 1,010 453 612 748 826 735
14 679 683 750 988 1,930 3,190 962 455 609 748 824 730
15 679 682 749 1,010 2,020 3,130 906 459 612 757 817 730
16 675 679 755 1,020 2,130 3,120 837 461 619 767 814 731
17 679 691 768 1,030 2,210 3,160 775 466 623 769 815 725
18 673 692 791 1,040 2,290 3,100 726 464 629 768 817 717
19 674 694 803 1,060 2,340 3,020 700 466 643 764 818 713
20 673 701 808 1,080 2,400 2,970 667 473 655 763 814 714
21 674 701 810 1,110 2,510 2,910 627 481 667 767 815 717
22 673 698 825 1,130 2,600 2,810 596 489 672 773 808 722
23 674 692 829 1,180 2,630 2,730 575 497 670 775 801 710
24 674 696 843 1,230 2,660 2,660 547 504 671 779 805 702
25 672 705 850 1,240 2,710 2,590 529 509 669 780 807 697
26 673 703 856 1,250 2,760 2,550 514 511 669 783 800 696
27 667 705 860 1,250 2,820 2,470 507 515 678 786 797 697
28 668 718 852 1,270 2,890 2,390 491 516 691 786 791 698
29 665 753 867 1,290 2,990 2,260 477 525 688 790 785 697
30 665   867 1,330 3,070 2,150 470 526 695 790 784 696
31 670   856   3,080   462 530   801   692