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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 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 79 - 80 years of record in, ft3/s   (Calculation Period 1939-10-01 -> 2019-09-30)

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
1 734 734 710 1,530 5,760 11,600 6,690 1,910 979 944 1,180 1,130
2 718 734 703 1,560 5,860 11,500 6,420 1,860 968 955 1,160 1,090
3 704 718 703 1,620 6,160 11,800 6,220 1,790 960 940 1,150 1,140
4 692 713 706 1,710 6,500 12,100 6,060 1,730 938 913 1,170 1,160
5 688 705 711 1,790 6,750 12,100 5,810 1,660 928 915 1,210 1,120
6 698 696 723 1,940 7,140 12,100 5,600 1,620 929 901 1,190 1,070
7 700 693 734 2,070 7,520 11,700 5,360 1,570 923 885 1,290 1,020
8 714 710 743 2,130 7,700 11,700 5,150 1,520 905 867 1,350 969
9 713 745 748 2,210 7,960 11,900 4,900 1,480 899 875 1,250 949
10 711 796 771 2,340 8,250 10,900 4,690 1,440 889 924 1,270 955
11 704 785 782 2,400 8,510 10,600 4,520 1,400 875 962 1,420 960
12 694 768 806 2,480 8,760 10,400 4,300 1,350 870 1,020 1,570 977
13 703 754 859 2,620 9,100 10,400 4,150 1,310 886 1,000 1,400 963
14 710 740 866 2,820 9,210 10,300 4,070 1,280 861 1,000 1,340 935
15 728 732 919 2,990 9,390 10,200 3,880 1,250 865 1,040 1,280 914
16 780 728 1,110 3,070 9,770 10,200 3,680 1,250 865 1,090 1,240 890
17 824 725 1,100 3,190 10,300 10,100 3,490 1,230 875 1,110 1,210 882
18 806 716 1,070 3,430 10,700 9,910 3,340 1,200 915 1,080 1,160 862
19 776 715 1,110 3,630 10,900 9,730 3,210 1,160 945 1,090 1,130 839
20 774 720 1,100 3,900 11,100 9,770 3,090 1,140 920 1,100 1,100 827
21 754 737 1,100 4,230 11,200 9,160 2,950 1,130 929 1,120 1,110 836
22 746 753 1,080 4,430 11,400 8,990 2,800 1,110 930 1,110 1,100 833
23 733 746 1,100 4,660 11,800 8,740 2,700 1,110 921 1,100 1,140 850
24 722 730 1,120 4,950 11,800 8,400 2,580 1,110 908 1,090 1,280 850
25 714 736 1,150 5,170 11,800 8,110 2,490 1,110 909 1,110 1,320 846
26 702 746 1,210 5,110 12,200 7,810 2,390 1,110 932 1,160 1,270 844
27 687 731 1,230 5,120 12,100 7,560 2,310 1,090 919 1,150 1,190 882
28 680 716 1,260 5,240 11,800 7,250 2,220 1,060 902 1,140 1,170 852
29 672 640 1,310 5,450 11,700 7,010 2,140 1,040 889 1,140 1,140 805
30 671   1,360 5,630 11,800 6,950 2,070 1,020 893 1,120 1,160 777
31 701   1,460   11,800   1,990 1,000   1,140   755