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USGS Surface-Water 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 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 -> 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
1 923 871 825 917 901 1,220 1,100 1,080 1,100 1,130 1,300 1,070
2 921 875 828 920 882 1,250 1,080 1,090 1,090 1,180 1,320 1,040
3 920 874 825 932 871 1,250 1,070 1,080 1,090 1,170 1,320 1,010
4 917 873 820 931 863 1,260 1,050 1,090 1,080 1,160 1,320 985
5 917 871 817 921 847 1,290 1,050 1,090 1,070 1,160 1,320 977
6 922 868 821 921 836 1,320 1,040 1,080 1,070 1,160 1,320 970
7 925 862 825 932 832 1,320 1,020 1,070 1,070 1,160 1,310 961
8 921 856 829 948 823 1,320 1,010 1,060 1,090 1,160 1,310 962
9 914 855 825 962 822 1,340 1,000 1,060 1,100 1,170 1,320 958
10 916 855 818 960 816 1,350 1,010 1,060 1,110 1,190 1,340 949
11 921 854 819 946 809 1,330 1,010 1,050 1,120 1,200 1,340 952
12 919 853 818 940 820 1,300 1,020 1,050 1,120 1,210 1,340 955
13 916 859 813 945 835 1,280 1,020 1,040 1,110 1,230 1,320 970
14 920 860 826 946 838 1,290 999 1,040 1,110 1,250 1,300 976
15 917 858 848 948 842 1,290 997 1,050 1,110 1,260 1,300 976
16 912 858 856 953 856 1,270 997 1,050 1,100 1,260 1,290 974
17 903 855 863 952 868 1,260 1,010 1,040 1,110 1,270 1,280 968
18 898 852 863 949 870 1,250 1,020 1,030 1,110 1,280 1,270 964
19 897 852 861 939 862 1,250 1,020 1,030 1,120 1,300 1,270 964
20 900 853 860 934 859 1,230 1,020 1,040 1,110 1,310 1,280 962
21 898 854 869 937 863 1,190 1,040 1,040 1,110 1,300 1,290 967
22 893 853 875 936 877 1,160 1,040 1,040 1,110 1,300 1,270 965
23 890 848 878 932 891 1,140 1,040 1,040 1,090 1,290 1,220 952
24 886 840 880 924 913 1,120 1,040 1,060 1,080 1,260 1,210 936
25 881 835 883 925 933 1,130 1,040 1,070 1,080 1,260 1,180 935
26 874 831 883 930 965 1,110 1,060 1,090 1,090 1,250 1,180 936
27 872 829 886 925 1,020 1,140 1,070 1,090 1,110 1,260 1,170 933
28 873 826 892 918 1,080 1,160 1,070 1,080 1,110 1,290 1,140 929
29 874 834 894 908 1,130 1,170 1,070 1,090 1,110 1,300 1,130 928
30 871   906 906 1,160 1,140 1,070 1,090 1,110 1,300 1,100 930
31 869   916   1,170   1,080 1,090   1,300   928