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USGS Surface-Water 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 06038500 Madison River bl Hebgen Lake nr Grayling MT


Gallatin County, Montana
Hydrologic Unit Code 10020007
Latitude  44°51'59.01", Longitude 111°20'19.61" NAD83
Drainage area 931  square miles
Gage datum 6,448.47 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 1938-10-01 -> 2021-09-30)

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
1 924 869 824 920 901 1,220 1,100 1,080 1,110 1,140 1,320 1,080
2 923 873 827 923 882 1,260 1,080 1,080 1,100 1,190 1,340 1,050
3 921 872 825 935 870 1,260 1,070 1,080 1,090 1,180 1,340 1,010
4 918 871 820 934 863 1,280 1,050 1,080 1,080 1,180 1,340 991
5 917 869 818 924 847 1,310 1,050 1,080 1,080 1,170 1,340 983
6 921 867 822 925 836 1,340 1,040 1,070 1,070 1,170 1,340 975
7 925 860 825 936 831 1,350 1,020 1,070 1,080 1,170 1,330 966
8 921 855 829 952 822 1,350 1,000 1,060 1,100 1,170 1,320 968
9 915 854 826 967 822 1,360 1,000 1,060 1,110 1,180 1,340 963
10 917 855 818 965 816 1,380 1,010 1,060 1,120 1,200 1,360 954
11 922 854 819 951 809 1,360 1,010 1,050 1,130 1,210 1,350 956
12 920 853 818 946 820 1,330 1,020 1,050 1,130 1,220 1,350 960
13 917 859 813 949 837 1,300 1,020 1,040 1,120 1,240 1,330 974
14 921 861 827 950 840 1,290 998 1,040 1,110 1,260 1,320 980
15 919 859 849 951 844 1,290 994 1,050 1,110 1,280 1,320 981
16 914 860 857 957 858 1,270 994 1,050 1,110 1,280 1,310 978
17 905 856 863 956 871 1,250 1,010 1,040 1,120 1,280 1,300 972
18 900 853 865 953 874 1,240 1,010 1,030 1,120 1,290 1,280 968
19 899 853 863 942 865 1,250 1,020 1,030 1,130 1,320 1,290 968
20 902 854 862 937 863 1,220 1,020 1,040 1,120 1,320 1,300 966
21 900 854 871 940 868 1,190 1,040 1,040 1,120 1,320 1,310 971
22 895 853 877 938 883 1,160 1,030 1,040 1,120 1,320 1,290 969
23 892 847 880 933 897 1,140 1,030 1,040 1,100 1,310 1,230 956
24 888 839 882 926 920 1,120 1,040 1,060 1,090 1,270 1,210 939
25 882 834 885 926 946 1,130 1,040 1,080 1,080 1,270 1,190 939
26 875 830 886 931 974 1,120 1,060 1,090 1,100 1,260 1,190 939
27 873 828 888 926 1,020 1,150 1,060 1,090 1,110 1,270 1,180 937
28 873 825 895 919 1,080 1,170 1,070 1,090 1,110 1,300 1,160 932
29 874 834 897 909 1,130 1,170 1,070 1,090 1,110 1,310 1,140 931
30 870   909 906 1,160 1,150 1,070 1,090 1,120 1,310 1,110 934
31 867   918   1,180   1,080 1,100   1,310   930