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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 06090800 Missouri River at Fort Benton MT


Chouteau County, Montana
Hydrologic Unit Code 10030102
Latitude  47°49'00.88", Longitude 110°39'58.11" NAD83
Drainage area 24,297  square miles
Gage datum 2,614.05 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 1890-10-01 -> 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 4,790 5,180 5,590 6,900 9,810 17,200 13,800 5,670 4,720 5,040 5,390 5,380
2 4,810 5,150 5,610 6,920 9,920 17,300 13,500 5,580 4,750 5,070 5,440 5,380
3 4,850 5,240 5,610 6,890 10,000 17,500 13,100 5,530 4,780 5,060 5,460 5,360
4 4,910 5,280 5,580 6,840 10,200 17,800 12,500 5,420 4,770 5,090 5,490 5,430
5 4,960 5,260 5,660 6,850 10,400 18,200 12,200 5,380 4,730 5,130 5,510 5,390
6 5,020 5,280 5,710 6,810 10,500 18,500 11,900 5,380 4,780 5,150 5,470 5,250
7 5,010 5,230 5,670 6,790 10,700 18,400 11,600 5,350 4,740 5,170 5,520 5,280
8 5,130 5,220 5,740 6,930 11,000 18,500 11,300 5,300 4,790 5,150 5,480 5,320
9 5,120 5,270 5,850 7,080 11,300 18,600 10,900 5,310 4,840 5,170 5,500 5,270
10 5,100 5,300 5,920 7,190 11,700 18,700 10,500 5,230 4,860 5,140 5,520 5,200
11 5,060 5,350 6,060 7,220 11,900 18,700 9,940 5,170 4,830 5,170 5,440 5,230
12 5,090 5,360 6,120 7,370 12,100 18,800 9,660 5,150 4,900 5,160 5,470 5,230
13 5,100 5,420 6,110 7,480 12,400 18,900 9,430 5,140 4,930 5,210 5,450 5,340
14 5,110 5,440 6,170 7,590 12,500 18,700 9,110 5,140 4,850 5,200 5,430 5,240
15 5,060 5,380 6,220 7,710 12,700 18,700 8,770 5,080 4,900 5,300 5,440 5,190
16 5,040 5,420 6,190 7,980 13,000 18,500 8,360 5,060 4,920 5,280 5,460 5,160
17 5,060 5,460 6,310 8,070 13,300 18,300 8,030 4,990 4,900 5,330 5,460 5,170
18 5,090 5,440 6,320 8,090 13,700 18,300 7,780 5,040 4,910 5,360 5,430 5,150
19 5,160 5,410 6,360 8,180 13,900 18,100 7,460 4,950 4,970 5,340 5,440 5,090
20 5,160 5,420 6,400 8,350 14,200 18,000 7,270 4,930 5,000 5,290 5,400 5,060
21 5,150 5,460 6,380 8,530 14,400 17,900 7,050 4,950 4,960 5,260 5,330 5,040
22 5,160 5,430 6,370 8,590 14,800 17,500 6,900 4,940 4,950 5,280 5,390 5,140
23 5,210 5,430 6,420 8,710 15,200 17,100 6,590 4,990 4,980 5,380 5,360 5,140
24 5,200 5,400 6,440 8,890 15,300 16,700 6,430 4,960 4,980 5,420 5,340 5,110
25 5,200 5,350 6,510 9,020 15,600 16,200 6,220 4,860 4,950 5,430 5,380 5,040
26 5,160 5,390 6,590 9,140 15,800 15,700 6,120 4,820 4,990 5,380 5,380 5,020
27 5,190 5,440 6,590 9,360 16,100 15,300 6,000 4,880 5,040 5,440 5,390 5,020
28 5,170 5,460 6,630 9,450 16,400 14,800 5,900 4,840 5,040 5,450 5,380 5,080
29 5,220 5,610 6,760 9,510 16,600 14,500 5,890 4,780 5,010 5,400 5,430 5,060
30 5,270   6,870 9,610 16,800 14,200 5,840 4,740 5,070 5,410 5,380 5,020
31 5,200   6,860   17,000   5,740 4,730   5,380   5,020