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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 06115200 Missouri River near Landusky MT


Fergus County, Montana
Hydrologic Unit Code 10040104
Latitude  47°37'53.15", Longitude 108°41'15.88" NAD83
Drainage area 40,649  square miles
Contributing drainage area 39,828  square miles
Gage datum 2,239.96 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 1933-10-01 -> 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 6,380 6,780 7,310 9,080 10,500 17,700 15,200 6,990 6,090 6,280 6,490 6,590
2 6,370 6,810 7,270 8,940 10,600 17,900 14,900 6,960 6,080 6,290 6,480 6,570
3 6,230 6,770 7,280 8,770 10,900 18,300 14,600 6,880 6,000 6,280 6,520 6,570
4 6,280 6,810 7,350 8,760 11,100 18,800 14,300 6,810 6,040 6,410 6,570 6,640
5 6,380 6,800 7,310 8,680 11,200 19,200 13,700 6,790 6,050 6,380 6,570 6,590
6 6,360 6,840 7,330 8,560 11,400 19,300 13,300 6,790 6,120 6,340 6,560 6,560
7 6,340 6,960 7,370 8,550 11,700 19,400 12,900 6,750 5,990 6,330 6,530 6,410
8 6,280 6,950 7,430 8,560 12,100 19,400 12,600 6,660 6,080 6,330 6,480 6,370
9 6,360 6,870 7,560 8,630 12,500 19,600 12,400 6,670 6,090 6,310 6,590 6,410
10 6,450 6,860 7,680 8,710 12,900 20,000 11,900 6,720 6,080 6,310 6,580 6,430
11 6,560 6,920 7,880 8,840 13,100 20,600 11,600 6,660 6,130 6,290 6,610 6,400
12 6,580 6,910 7,980 8,890 13,300 20,100 11,100 6,560 6,130 6,240 6,650 6,410
13 6,620 6,870 8,050 8,850 13,300 19,800 10,900 6,520 6,150 6,290 6,650 6,470
14 6,600 6,880 8,020 8,940 13,500 19,600 10,600 6,550 6,160 6,280 6,660 6,580
15 6,600 6,970 8,100 9,060 13,600 19,600 10,400 6,540 6,160 6,300 6,640 6,600
16 6,650 7,030 8,300 9,130 13,700 19,700 9,960 6,530 6,150 6,350 6,620 6,600
17 6,590 7,040 8,270 9,170 13,800 19,400 9,600 6,480 6,130 6,410 6,570 6,560
18 6,570 7,080 8,470 9,210 13,900 19,300 9,310 6,440 6,160 6,420 6,560 6,560
19 6,570 7,130 8,640 9,340 14,200 19,000 8,950 6,330 6,160 6,440 6,530 6,520
20 6,560 7,150 8,790 9,520 14,500 19,200 8,740 6,350 6,150 6,430 6,470 6,490
21 6,570 7,140 8,940 9,610 15,000 19,100 8,580 6,390 6,170 6,430 6,490 6,440
22 6,650 7,200 8,880 9,740 15,500 18,800 8,350 6,360 6,270 6,380 6,430 6,370
23 6,640 7,200 8,810 9,850 15,900 18,300 8,070 6,320 6,210 6,340 6,430 6,420
24 6,660 7,150 8,820 9,900 16,100 17,700 7,880 6,500 6,170 6,350 6,490 6,460
25 6,670 7,150 8,940 10,100 16,300 17,200 7,680 6,460 6,280 6,480 6,540 6,440
26 6,670 7,080 9,450 10,200 16,600 16,900 7,580 6,330 6,280 6,510 6,570 6,440
27 6,700 7,070 9,320 10,400 16,700 16,500 7,340 6,230 6,200 6,490 6,550 6,390
28 6,660 7,120 9,290 10,500 16,900 16,300 7,260 6,180 6,220 6,470 6,560 6,420
29 6,680 6,770 9,410 10,600 17,200 16,000 7,190 6,220 6,220 6,490 6,570 6,400
30 6,680   9,250 10,500 17,300 15,500 7,080 6,220 6,250 6,460 6,620 6,450
31 6,740   9,140   17,600   7,070 6,100   6,430   6,460