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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 12358500 M F Flathead River near West Glacier MT


Flathead County, Montana
Hydrologic Unit Code 17010207
Latitude  48°29'43.86", Longitude 114°00'36.75" NAD83
Drainage area 1,125  square miles
Gage datum 3,128.72 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 1939-10-01 -> 2024-09-30)

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
1 735 733 703 1,520 5,840 11,600 6,660 1,880 978 924 1,170 1,130
2 720 736 704 1,540 5,980 11,500 6,380 1,830 961 933 1,160 1,110
3 707 720 719 1,610 6,260 11,700 6,180 1,770 950 919 1,150 1,160
4 695 713 733 1,700 6,570 12,100 6,010 1,700 928 893 1,180 1,170
5 691 706 732 1,780 6,820 12,000 5,740 1,640 919 895 1,250 1,130
6 698 697 736 1,930 7,240 12,000 5,530 1,590 919 882 1,280 1,070
7 701 691 742 2,050 7,610 11,600 5,300 1,540 912 866 1,350 1,040
8 713 707 747 2,110 7,730 11,600 5,090 1,500 893 851 1,380 992
9 711 737 747 2,190 7,920 11,600 4,840 1,460 888 865 1,280 972
10 707 783 766 2,320 8,150 10,800 4,630 1,420 880 909 1,280 972
11 700 773 776 2,380 8,390 10,500 4,450 1,380 867 945 1,410 973
12 689 756 798 2,470 8,670 10,400 4,240 1,330 862 1,000 1,540 987
13 697 743 846 2,600 9,060 10,400 4,090 1,290 874 982 1,400 969
14 705 730 850 2,790 9,190 10,300 4,000 1,260 849 981 1,340 940
15 720 721 901 2,970 9,380 10,100 3,820 1,230 851 1,020 1,330 917
16 770 717 1,080 3,040 9,790 10,100 3,610 1,230 850 1,060 1,290 893
17 814 714 1,070 3,150 10,400 10,000 3,440 1,210 858 1,080 1,240 882
18 797 705 1,050 3,360 10,700 9,850 3,290 1,180 896 1,050 1,190 860
19 768 704 1,090 3,550 10,900 9,680 3,160 1,140 924 1,060 1,150 838
20 766 709 1,090 3,830 11,000 9,720 3,040 1,120 900 1,080 1,120 827
21 747 724 1,090 4,160 11,000 9,190 2,900 1,110 909 1,090 1,130 836
22 739 737 1,080 4,350 11,300 8,980 2,760 1,100 909 1,090 1,110 835
23 726 730 1,090 4,570 11,500 8,720 2,650 1,100 901 1,080 1,140 851
24 715 715 1,120 4,870 11,500 8,380 2,540 1,090 890 1,060 1,270 851
25 708 722 1,160 5,090 11,500 8,060 2,440 1,090 891 1,070 1,310 844
26 696 733 1,210 5,040 11,900 7,740 2,350 1,090 913 1,120 1,250 840
27 680 718 1,230 5,060 11,900 7,480 2,270 1,070 902 1,110 1,180 875
28 673 704 1,260 5,180 11,800 7,190 2,180 1,040 885 1,110 1,160 849
29 665 650 1,320 5,390 11,600 6,950 2,100 1,020 872 1,130 1,130 805
30 667   1,370 5,620 11,700 6,890 2,040 1,010 876 1,140 1,150 779
31 699   1,460   11,700   1,960 1,000   1,140   756