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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 12355500 N F Flathead River nr Columbia Falls MT


Flathead County, Montana
Hydrologic Unit Code 17010206
Latitude  48°29'44.87", Longitude 114°07'36.35" NAD83
Drainage area 1,556  square miles
Gage datum 3,145.59 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 -> 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
1 791 730 751 1,510 6,090 12,000 6,660 2,190 1,240 1,130 1,250 1,130
2 776 742 733 1,550 6,190 11,900 6,430 2,130 1,230 1,180 1,250 1,110
3 768 751 732 1,600 6,410 12,100 6,160 2,070 1,220 1,160 1,250 1,110
4 752 751 741 1,680 6,680 12,200 5,940 2,010 1,200 1,130 1,260 1,130
5 749 751 746 1,770 6,940 12,300 5,730 1,940 1,180 1,110 1,290 1,110
6 761 749 761 1,900 7,350 12,200 5,520 1,890 1,180 1,100 1,280 1,060
7 775 755 778 2,030 7,720 12,100 5,300 1,840 1,170 1,080 1,350 1,010
8 798 763 788 2,130 7,990 11,900 5,090 1,790 1,150 1,070 1,470 969
9 796 777 794 2,240 8,250 11,800 4,910 1,760 1,150 1,060 1,370 962
10 792 776 807 2,370 8,550 11,200 4,720 1,740 1,130 1,080 1,310 998
11 773 784 816 2,480 8,840 10,700 4,540 1,700 1,120 1,100 1,360 1,000
12 760 774 839 2,580 9,090 10,400 4,370 1,660 1,110 1,120 1,410 1,010
13 758 768 877 2,720 9,540 10,300 4,240 1,620 1,100 1,110 1,390 1,000
14 770 766 885 2,900 9,760 10,200 4,150 1,580 1,090 1,120 1,420 983
15 798 763 919 3,030 9,790 9,970 4,030 1,540 1,090 1,150 1,370 965
16 819 769 1,020 3,120 10,100 9,870 3,850 1,510 1,090 1,170 1,330 936
17 840 762 1,040 3,240 10,500 9,920 3,660 1,490 1,090 1,200 1,280 921
18 817 753 1,030 3,470 10,800 9,900 3,510 1,460 1,100 1,200 1,240 902
19 813 749 1,060 3,660 11,000 9,600 3,370 1,420 1,120 1,200 1,200 884
20 797 752 1,050 3,930 11,200 9,350 3,250 1,390 1,120 1,250 1,200 883
21 790 752 1,050 4,210 11,400 9,110 3,110 1,370 1,130 1,270 1,190 887
22 788 757 1,060 4,450 11,600 8,780 2,980 1,360 1,130 1,250 1,150 879
23 784 737 1,090 4,680 11,800 8,550 2,860 1,360 1,120 1,230 1,140 878
24 785 728 1,110 5,020 11,900 8,320 2,760 1,360 1,110 1,210 1,200 865
25 779 729 1,150 5,310 12,000 8,070 2,670 1,360 1,100 1,210 1,230 863
26 760 738 1,210 5,340 12,200 7,770 2,600 1,350 1,110 1,230 1,190 861
27 741 755 1,220 5,350 12,300 7,480 2,520 1,340 1,110 1,240 1,150 888
28 733 752 1,270 5,470 12,200 7,170 2,440 1,320 1,100 1,240 1,130 898
29 726 715 1,320 5,660 12,000 6,900 2,380 1,290 1,080 1,250 1,110 866
30 728   1,380 5,870 12,000 6,790 2,320 1,270 1,080 1,230 1,120 838
31 724   1,450   12,000   2,260 1,250   1,230   814