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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 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 -> 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
1 898 918 990 1,670 4,100 9,340 5,430 1,080 819 853 1,160 1,190
2 935 952 1,000 1,740 4,130 9,460 5,100 1,050 821 920 1,160 1,210
3 920 928 1,020 1,780 4,210 9,570 4,820 1,010 818 895 1,150 1,190
4 893 898 1,020 1,840 4,360 9,970 4,640 978 806 885 1,120 1,130
5 869 905 1,010 1,940 4,550 10,100 4,410 961 803 878 1,110 1,090
6 848 904 1,020 2,050 4,860 9,980 4,150 951 808 881 1,130 1,060
7 857 896 1,080 2,100 5,170 9,690 3,920 938 811 883 1,190 1,020
8 885 996 1,100 2,140 5,360 9,260 3,710 943 810 877 1,340 995
9 897 1,050 1,110 2,240 5,400 8,810 3,520 929 811 883 1,310 991
10 876 1,100 1,120 2,370 5,530 8,490 3,360 915 810 895 1,210 1,000
11 870 1,110 1,160 2,460 5,710 8,440 3,200 898 824 881 1,170 1,010
12 863 1,030 1,170 2,540 5,880 8,320 3,050 883 824 891 1,140 1,020
13 854 995 1,190 2,660 6,260 8,290 2,890 864 825 906 1,190 1,040
14 868 986 1,210 2,760 6,620 8,330 2,710 857 833 929 1,250 1,030
15 876 979 1,250 2,910 6,930 7,900 2,530 849 839 942 1,200 1,010
16 897 978 1,360 2,850 7,270 7,720 2,350 842 823 949 1,170 984
17 897 988 1,440 2,710 7,860 7,840 2,220 837 832 976 1,150 954
18 915 991 1,430 2,670 8,350 7,870 2,080 847 837 1,000 1,130 918
19 925 996 1,440 2,730 8,630 7,850 1,980 832 843 1,010 1,130 906
20 920 998 1,470 2,840 8,700 7,700 1,880 847 841 1,030 1,100 909
21 902 1,010 1,480 3,070 8,610 7,370 1,770 825 834 1,020 1,100 916
22 890 999 1,490 3,310 8,620 7,160 1,660 840 830 1,020 1,100 912
23 881 995 1,500 3,550 8,510 6,840 1,550 853 830 1,040 1,100 883
24 867 997 1,530 3,680 8,380 6,570 1,460 852 831 1,040 1,140 871
25 856 975 1,540 3,750 8,560 6,290 1,380 854 829 1,030 1,130 866
26 855 969 1,580 3,690 8,620 6,130 1,320 853 823 1,030 1,110 854
27 871 965 1,600 3,700 8,930 5,960 1,270 856 819 1,050 1,100 851
28 880 958 1,600 3,820 9,080 5,690 1,230 855 819 1,050 1,080 857
29 861 1,000 1,610 3,910 9,160 5,530 1,180 845 816 1,080 1,090 868
30 858   1,610 3,940 9,360 5,530 1,140 830 820 1,120 1,120 879
31 873   1,620   9,180   1,110 827   1,110   893