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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 12352500 Bitterroot River near Missoula MT


Missoula County, Montana
Hydrologic Unit Code 17010205
Latitude  46°49'54.26", Longitude 114°03'17.50" NAD83
Drainage area 2,824  square miles
Gage datum 3,110 feet above NAVD88
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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 1897-10-01 -> 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
1 898 918 990 1,670 4,100 9,340 5,430 1,080 824 857 1,160 1,190
2 935 952 1,000 1,740 4,130 9,460 5,100 1,050 826 926 1,160 1,210
3 920 928 1,020 1,780 4,210 9,570 4,820 1,010 823 901 1,150 1,190
4 893 898 1,020 1,840 4,360 9,970 4,640 978 811 890 1,120 1,130
5 869 905 1,010 1,940 4,550 10,100 4,410 961 809 883 1,110 1,090
6 848 904 1,020 2,050 4,860 9,980 4,150 951 814 886 1,130 1,060
7 857 896 1,080 2,100 5,170 9,690 3,920 938 817 888 1,190 1,020
8 885 996 1,100 2,140 5,360 9,260 3,710 943 816 883 1,340 995
9 897 1,050 1,110 2,240 5,400 8,810 3,520 929 817 889 1,310 991
10 876 1,100 1,120 2,370 5,530 8,490 3,360 915 815 902 1,210 1,000
11 870 1,110 1,160 2,460 5,710 8,440 3,200 898 830 888 1,170 1,010
12 863 1,030 1,170 2,540 5,880 8,320 3,050 883 827 898 1,140 1,020
13 854 995 1,190 2,660 6,260 8,290 2,890 864 826 914 1,190 1,040
14 868 986 1,210 2,760 6,620 8,330 2,710 857 832 938 1,250 1,030
15 876 979 1,250 2,910 6,930 7,900 2,530 849 838 951 1,200 1,010
16 897 978 1,360 2,850 7,270 7,720 2,350 842 823 958 1,170 984
17 897 988 1,440 2,710 7,860 7,840 2,220 837 833 986 1,150 954
18 915 991 1,430 2,670 8,350 7,870 2,080 847 834 1,010 1,130 918
19 925 996 1,440 2,730 8,630 7,850 1,980 832 838 1,010 1,130 906
20 920 998 1,470 2,840 8,700 7,700 1,880 847 836 1,040 1,100 909
21 902 1,010 1,480 3,070 8,610 7,370 1,770 825 831 1,030 1,100 916
22 890 999 1,490 3,310 8,620 7,160 1,660 840 827 1,030 1,100 912
23 881 995 1,500 3,550 8,510 6,840 1,550 853 828 1,040 1,100 883
24 867 997 1,530 3,680 8,380 6,570 1,460 852 830 1,040 1,140 871
25 856 975 1,540 3,750 8,560 6,290 1,380 854 830 1,030 1,130 866
26 855 969 1,580 3,690 8,620 6,130 1,320 855 824 1,030 1,110 854
27 871 965 1,600 3,700 8,930 5,960 1,270 859 821 1,050 1,100 851
28 880 958 1,600 3,820 9,080 5,690 1,230 858 821 1,050 1,080 857
29 861 1,000 1,610 3,910 9,160 5,530 1,180 850 818 1,080 1,090 868
30 858   1,610 3,940 9,360 5,530 1,140 834 823 1,120 1,120 879
31 873   1,620   9,180   1,110 832   1,110   893