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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 12340500 Clark Fork above Missoula MT


Missoula County, Montana
Hydrologic Unit Code 17010204
Latitude  46°52'36.35", Longitude 113°55'55.63" NAD83
Drainage area 6,021  square miles
Gage datum 3,198.30 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 1928-10-01 -> 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 1,320 1,360 1,530 2,520 5,560 9,950 5,190 1,820 1,310 1,460 1,590 1,490
2 1,300 1,380 1,520 2,630 5,640 9,890 4,980 1,780 1,320 1,490 1,610 1,510
3 1,280 1,370 1,520 2,690 5,770 9,880 4,780 1,750 1,310 1,480 1,600 1,530
4 1,280 1,360 1,530 2,710 5,960 9,960 4,620 1,720 1,300 1,490 1,620 1,540
5 1,270 1,390 1,540 2,760 6,240 9,990 4,480 1,690 1,310 1,500 1,620 1,490
6 1,340 1,400 1,540 2,860 6,450 9,920 4,290 1,650 1,310 1,510 1,620 1,460
7 1,350 1,390 1,570 3,020 6,690 9,830 4,100 1,620 1,310 1,510 1,620 1,430
8 1,370 1,410 1,590 3,100 6,900 9,680 3,940 1,590 1,310 1,520 1,640 1,420
9 1,360 1,470 1,610 3,170 7,050 9,580 3,760 1,560 1,330 1,510 1,640 1,400
10 1,340 1,500 1,650 3,240 7,150 9,430 3,620 1,510 1,340 1,520 1,610 1,400
11 1,320 1,460 1,730 3,350 7,290 9,180 3,520 1,500 1,340 1,530 1,600 1,430
12 1,310 1,440 1,740 3,440 7,410 8,890 3,400 1,480 1,360 1,530 1,580 1,440
13 1,310 1,450 1,770 3,500 7,520 8,740 3,270 1,470 1,360 1,540 1,580 1,440
14 1,330 1,460 1,800 3,580 7,690 8,710 3,160 1,450 1,370 1,550 1,570 1,440
15 1,360 1,450 1,790 3,690 7,900 8,500 3,060 1,430 1,370 1,560 1,560 1,420
16 1,340 1,480 1,830 3,760 8,160 8,340 2,930 1,410 1,390 1,570 1,550 1,410
17 1,400 1,500 1,920 3,810 8,460 8,280 2,820 1,400 1,400 1,570 1,560 1,370
18 1,390 1,490 1,980 3,860 8,760 8,170 2,710 1,370 1,410 1,560 1,560 1,340
19 1,360 1,490 2,030 3,960 8,950 7,920 2,640 1,360 1,410 1,570 1,540 1,320
20 1,340 1,520 2,070 4,130 9,140 7,720 2,570 1,340 1,420 1,570 1,530 1,340
21 1,330 1,560 2,090 4,340 9,380 7,510 2,460 1,350 1,450 1,570 1,520 1,340
22 1,320 1,530 2,140 4,520 9,500 7,240 2,380 1,340 1,450 1,580 1,500 1,360
23 1,330 1,510 2,180 4,710 9,640 6,970 2,300 1,350 1,460 1,590 1,500 1,420
24 1,330 1,500 2,220 4,890 9,780 6,710 2,210 1,360 1,460 1,580 1,530 1,440
25 1,340 1,550 2,210 5,020 9,870 6,480 2,140 1,360 1,460 1,590 1,580 1,400
26 1,320 1,530 2,240 5,110 9,970 6,220 2,100 1,350 1,440 1,590 1,570 1,380
27 1,310 1,530 2,270 5,170 10,100 5,980 2,020 1,330 1,440 1,610 1,540 1,360
28 1,310 1,520 2,310 5,220 10,100 5,730 1,960 1,330 1,440 1,590 1,510 1,340
29 1,280 1,600 2,380 5,310 10,100 5,550 1,930 1,320 1,460 1,600 1,490 1,320
30 1,290   2,380 5,430 10,000 5,390 1,880 1,310 1,460 1,590 1,480 1,300
31 1,330   2,410   10,000   1,850 1,310   1,580   1,330