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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 06052500 Gallatin River at Logan MT


Gallatin County, Montana
Hydrologic Unit Code 10020008
Latitude  45°53'10.49", Longitude 111°26'31.23" 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 -> 2025-09-30)

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
1 685 671 708 862 1,360 3,090 2,030 452 532 691 806 782
2 684 674 711 890 1,380 3,140 1,920 448 537 696 807 786
3 677 666 712 876 1,420 3,160 1,830 445 540 703 810 784
4 674 669 708 868 1,470 3,240 1,760 445 536 708 818 774
5 677 689 699 878 1,530 3,310 1,680 448 538 711 819 760
6 679 687 713 896 1,570 3,410 1,570 448 544 714 819 754
7 682 675 725 910 1,640 3,440 1,470 443 550 718 817 747
8 685 668 728 904 1,680 3,430 1,380 441 556 722 821 744
9 685 674 733 923 1,710 3,410 1,290 444 565 722 824 740
10 682 668 743 956 1,730 3,350 1,210 443 570 722 820 739
11 674 675 752 956 1,750 3,330 1,130 444 580 728 820 746
12 669 674 749 969 1,790 3,240 1,070 443 600 739 821 736
13 671 678 754 965 1,850 3,230 999 450 603 744 825 735
14 675 680 747 984 1,910 3,220 946 452 601 744 823 729
15 674 679 746 1,010 2,010 3,140 891 455 604 753 817 729
16 671 676 752 1,020 2,110 3,110 824 457 610 762 814 729
17 675 688 765 1,020 2,200 3,150 763 461 615 764 815 724
18 670 689 787 1,030 2,290 3,100 715 459 624 764 816 716
19 670 690 799 1,050 2,350 3,030 688 461 640 761 818 711
20 670 697 805 1,070 2,410 2,970 654 469 650 761 815 712
21 672 697 808 1,100 2,520 2,890 615 480 661 765 814 717
22 672 694 820 1,120 2,590 2,790 584 486 666 773 806 721
23 673 687 825 1,170 2,620 2,710 564 493 665 778 800 710
24 673 691 837 1,210 2,650 2,640 539 499 666 781 804 702
25 670 701 845 1,230 2,690 2,570 521 505 662 781 806 697
26 670 700 850 1,240 2,730 2,520 506 507 662 785 799 694
27 665 701 854 1,240 2,800 2,450 500 510 670 788 794 693
28 666 712 846 1,260 2,880 2,370 483 511 683 787 788 695
29 663 750 861 1,280 2,990 2,240 470 519 679 791 782 694
30 662   861 1,320 3,090 2,130 464 520 686 792 781 693
31 667   850   3,100   456 524   802   688