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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 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 -> 2023-09-30)

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 6,400 6,810 7,340 9,170 10,600 17,800 15,300 7,020 6,110 6,300 6,510 6,620
2 6,390 6,840 7,290 9,020 10,700 18,000 15,000 6,990 6,100 6,300 6,500 6,590
3 6,240 6,790 7,300 8,850 10,900 18,300 14,700 6,910 6,010 6,290 6,540 6,600
4 6,300 6,830 7,380 8,820 11,100 18,900 14,400 6,830 6,050 6,420 6,590 6,660
5 6,400 6,820 7,340 8,730 11,200 19,200 13,800 6,810 6,060 6,390 6,590 6,610
6 6,370 6,870 7,360 8,610 11,400 19,300 13,400 6,810 6,130 6,350 6,580 6,580
7 6,350 6,990 7,410 8,600 11,700 19,500 13,000 6,770 5,990 6,340 6,550 6,420
8 6,290 6,980 7,460 8,580 12,000 19,500 12,700 6,670 6,090 6,340 6,500 6,380
9 6,370 6,900 7,610 8,630 12,400 19,600 12,400 6,690 6,090 6,320 6,610 6,420
10 6,460 6,900 7,720 8,720 12,800 20,100 12,000 6,730 6,090 6,330 6,600 6,450
11 6,580 6,960 7,920 8,850 13,000 20,600 11,700 6,680 6,140 6,310 6,630 6,420
12 6,620 6,960 8,040 8,910 13,200 20,100 11,200 6,580 6,140 6,270 6,680 6,430
13 6,660 6,920 8,110 8,860 13,300 19,800 11,000 6,540 6,150 6,320 6,680 6,490
14 6,640 6,920 8,090 8,920 13,500 19,600 10,700 6,560 6,170 6,300 6,680 6,610
15 6,650 7,010 8,170 9,040 13,600 19,700 10,500 6,560 6,170 6,330 6,660 6,630
16 6,680 7,080 8,360 9,140 13,700 19,800 10,000 6,550 6,150 6,370 6,640 6,630
17 6,620 7,090 8,330 9,180 13,800 19,500 9,660 6,490 6,140 6,430 6,590 6,580
18 6,590 7,150 8,540 9,230 13,900 19,300 9,380 6,450 6,160 6,440 6,580 6,570
19 6,580 7,200 8,710 9,370 14,200 19,100 9,020 6,350 6,160 6,460 6,560 6,540
20 6,570 7,210 8,870 9,550 14,500 19,300 8,800 6,360 6,130 6,450 6,490 6,510
21 6,580 7,180 9,030 9,640 15,000 19,200 8,640 6,400 6,150 6,460 6,510 6,450
22 6,670 7,240 8,970 9,770 15,500 18,900 8,400 6,380 6,260 6,410 6,450 6,380
23 6,650 7,230 8,900 9,880 15,900 18,400 8,120 6,340 6,200 6,360 6,450 6,430
24 6,670 7,190 8,910 9,940 16,200 17,800 7,930 6,520 6,160 6,370 6,510 6,480
25 6,690 7,210 9,040 10,200 16,300 17,300 7,720 6,480 6,280 6,500 6,570 6,460
26 6,700 7,130 9,560 10,300 16,600 17,000 7,620 6,340 6,270 6,540 6,590 6,460
27 6,730 7,120 9,430 10,400 16,700 16,600 7,370 6,250 6,200 6,510 6,570 6,400
28 6,700 7,160 9,400 10,500 17,000 16,400 7,290 6,190 6,230 6,490 6,580 6,430
29 6,690 6,770 9,510 10,600 17,200 16,200 7,230 6,230 6,220 6,510 6,590 6,420
30 6,690   9,360 10,600 17,400 15,700 7,110 6,240 6,260 6,480 6,640 6,470
31 6,760   9,240   17,700   7,100 6,120   6,440   6,470