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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 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 -> 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
1 794 731 750 1,500 6,050 11,900 6,590 2,150 1,230 1,110 1,240 1,130
2 778 743 736 1,530 6,200 11,800 6,370 2,090 1,220 1,140 1,230 1,180
3 772 749 739 1,590 6,440 12,000 6,120 2,040 1,200 1,130 1,230 1,170
4 756 749 754 1,670 6,710 12,200 5,900 1,970 1,180 1,100 1,240 1,170
5 753 750 756 1,760 6,980 12,200 5,680 1,910 1,160 1,080 1,280 1,140
6 763 749 767 1,880 7,400 12,100 5,460 1,860 1,160 1,070 1,290 1,090
7 776 752 780 2,000 7,770 12,000 5,240 1,810 1,160 1,060 1,360 1,070
8 796 758 787 2,100 8,000 11,800 5,030 1,760 1,140 1,040 1,460 1,030
9 794 769 789 2,210 8,200 11,700 4,850 1,740 1,130 1,040 1,360 1,010
10 789 767 802 2,330 8,450 11,100 4,660 1,710 1,110 1,060 1,290 1,030
11 767 773 811 2,440 8,710 10,700 4,490 1,670 1,100 1,070 1,340 1,030
12 753 763 832 2,530 8,950 10,400 4,310 1,630 1,090 1,090 1,380 1,030
13 754 757 868 2,670 9,400 10,300 4,190 1,590 1,080 1,090 1,370 1,020
14 765 754 875 2,850 9,640 10,200 4,090 1,550 1,070 1,090 1,400 995
15 787 750 906 2,980 9,690 9,990 3,970 1,520 1,070 1,120 1,380 974
16 807 755 1,010 3,070 9,970 9,830 3,790 1,490 1,070 1,140 1,390 943
17 829 749 1,020 3,190 10,400 9,830 3,600 1,460 1,070 1,170 1,310 925
18 807 741 1,020 3,410 10,800 9,820 3,450 1,430 1,080 1,170 1,260 903
19 801 739 1,040 3,580 10,900 9,540 3,320 1,400 1,100 1,170 1,210 886
20 786 743 1,050 3,830 11,100 9,290 3,200 1,370 1,100 1,210 1,200 886
21 781 741 1,050 4,090 11,200 9,050 3,070 1,350 1,110 1,230 1,190 888
22 780 744 1,050 4,330 11,500 8,700 2,940 1,340 1,110 1,210 1,150 883
23 775 725 1,080 4,560 11,700 8,480 2,820 1,330 1,100 1,200 1,130 883
24 776 717 1,110 4,880 11,700 8,250 2,710 1,340 1,090 1,180 1,190 869
25 771 720 1,150 5,160 11,800 7,990 2,630 1,340 1,080 1,180 1,220 863
26 753 731 1,200 5,200 12,000 7,680 2,550 1,330 1,090 1,200 1,180 858
27 734 746 1,220 5,230 12,100 7,390 2,480 1,320 1,090 1,210 1,130 884
28 726 744 1,260 5,350 12,000 7,090 2,400 1,300 1,070 1,210 1,120 897
29 720 721 1,320 5,550 11,900 6,830 2,340 1,270 1,060 1,220 1,100 867
30 724   1,380 5,790 11,900 6,720 2,280 1,250 1,060 1,240 1,120 839
31 722   1,440   11,900   2,220 1,240   1,230   817