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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 78 - 79 years of record in, ft3/s   (Calculation Period 1939-10-01 -> 2018-09-30)

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
1 735 735 711 1,540 5,700 11,600 6,720 1,910 984 951 1,180 1,110
2 718 735 703 1,560 5,810 11,500 6,440 1,860 973 961 1,160 1,070
3 704 718 704 1,630 6,120 11,800 6,250 1,800 965 943 1,150 1,130
4 692 712 707 1,720 6,430 12,100 6,090 1,730 943 916 1,170 1,150
5 688 705 712 1,800 6,650 12,100 5,830 1,670 933 918 1,210 1,110
6 698 696 725 1,950 7,030 12,200 5,620 1,620 934 905 1,190 1,060
7 700 692 736 2,080 7,380 11,700 5,380 1,570 928 889 1,290 1,010
8 714 705 745 2,150 7,540 11,800 5,170 1,530 910 871 1,350 963
9 713 737 750 2,230 7,780 11,900 4,920 1,480 904 880 1,250 944
10 710 789 773 2,360 8,080 10,900 4,710 1,440 894 929 1,270 950
11 704 779 784 2,410 8,360 10,600 4,530 1,400 880 968 1,420 957
12 695 762 809 2,500 8,650 10,400 4,310 1,350 875 1,030 1,570 975
13 703 748 863 2,640 9,020 10,500 4,170 1,310 891 1,010 1,400 960
14 711 734 869 2,830 9,110 10,400 4,080 1,280 866 1,010 1,340 933
15 728 727 923 3,010 9,270 10,200 3,890 1,260 870 1,050 1,280 911
16 781 724 1,120 3,080 9,630 10,200 3,690 1,250 870 1,100 1,240 888
17 827 721 1,110 3,200 10,200 10,200 3,510 1,240 880 1,120 1,210 880
18 808 713 1,080 3,440 10,600 9,940 3,350 1,200 921 1,090 1,160 859
19 777 712 1,120 3,650 10,800 9,740 3,220 1,170 952 1,090 1,130 836
20 774 718 1,110 3,920 11,000 9,780 3,100 1,150 926 1,110 1,110 824
21 755 736 1,100 4,250 11,100 9,170 2,960 1,130 936 1,120 1,120 835
22 747 752 1,090 4,450 11,400 8,990 2,810 1,120 937 1,120 1,110 832
23 734 745 1,100 4,670 11,700 8,740 2,710 1,120 927 1,110 1,100 850
24 722 728 1,120 4,960 11,800 8,410 2,590 1,110 914 1,090 1,150 852
25 715 736 1,160 5,180 11,700 8,120 2,490 1,110 915 1,110 1,250 849
26 703 746 1,210 5,120 12,100 7,820 2,400 1,120 938 1,160 1,220 846
27 688 731 1,230 5,100 12,000 7,570 2,320 1,090 926 1,150 1,150 883
28 680 716 1,270 5,180 11,800 7,270 2,230 1,070 908 1,140 1,130 853
29 673 640 1,320 5,360 11,600 7,030 2,140 1,040 895 1,140 1,120 806
30 671   1,360 5,540 11,700 6,970 2,080 1,030 900 1,120 1,140 778
31 701   1,470   11,700   2,000 1,000   1,140   756