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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 12353000 Clark Fork below Missoula MT


Missoula County, Montana
Hydrologic Unit Code 17010204
Latitude  46°52'07.08", Longitude 114°07'39.89" NAD83
Drainage area 9,017  square miles
Gage datum 3,083.88 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 1929-10-01 -> 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 2,220 2,290 2,600 4,150 9,620 19,700 10,400 2,790 2,080 2,440 2,800 2,660
2 2,190 2,350 2,590 4,300 9,800 19,600 9,900 2,720 2,100 2,510 2,800 2,680
3 2,150 2,330 2,600 4,390 10,100 19,600 9,450 2,670 2,100 2,490 2,800 2,740
4 2,150 2,320 2,600 4,440 10,400 19,800 9,120 2,610 2,080 2,520 2,800 2,740
5 2,150 2,340 2,600 4,510 10,900 19,900 8,820 2,550 2,080 2,520 2,810 2,660
6 2,190 2,370 2,620 4,680 11,400 19,900 8,390 2,520 2,080 2,530 2,820 2,590
7 2,310 2,340 2,670 4,910 11,900 19,800 7,980 2,470 2,080 2,540 2,840 2,530
8 2,330 2,400 2,700 5,090 12,300 19,500 7,610 2,410 2,090 2,560 2,950 2,460
9 2,320 2,480 2,720 5,240 12,500 19,100 7,210 2,370 2,120 2,560 2,940 2,430
10 2,280 2,540 2,770 5,380 12,800 18,600 6,870 2,300 2,130 2,570 2,850 2,440
11 2,240 2,510 2,870 5,510 13,100 18,200 6,600 2,270 2,130 2,580 2,820 2,460
12 2,210 2,480 2,890 5,650 13,300 17,600 6,300 2,240 2,160 2,620 2,790 2,490
13 2,190 2,470 2,940 5,790 13,600 17,300 6,000 2,230 2,180 2,660 2,790 2,490
14 2,230 2,480 2,980 6,010 14,000 17,300 5,750 2,210 2,190 2,670 2,810 2,490
15 2,260 2,450 3,000 6,280 14,500 17,000 5,500 2,190 2,200 2,680 2,760 2,480
16 2,300 2,480 3,070 6,430 15,200 16,700 5,190 2,170 2,260 2,700 2,740 2,460
17 2,350 2,530 3,200 6,490 15,900 16,600 4,930 2,150 2,280 2,710 2,730 2,400
18 2,350 2,550 3,260 6,620 16,500 16,500 4,650 2,130 2,300 2,710 2,720 2,330
19 2,310 2,540 3,350 6,850 16,900 16,000 4,460 2,100 2,320 2,710 2,700 2,310
20 2,290 2,560 3,400 7,150 17,300 15,500 4,300 2,090 2,330 2,710 2,690 2,320
21 2,260 2,600 3,420 7,560 17,700 15,200 4,090 2,090 2,360 2,700 2,690 2,340
22 2,250 2,590 3,490 7,870 18,000 14,700 3,890 2,090 2,370 2,710 2,660 2,400
23 2,260 2,570 3,550 8,210 18,100 14,200 3,720 2,100 2,390 2,730 2,630 2,470
24 2,270 2,550 3,630 8,530 18,300 13,700 3,550 2,140 2,400 2,750 2,690 2,500
25 2,280 2,600 3,640 8,810 18,600 13,200 3,410 2,150 2,400 2,760 2,780 2,420
26 2,220 2,600 3,700 8,880 18,900 12,600 3,300 2,120 2,380 2,790 2,770 2,360
27 2,210 2,610 3,750 8,900 19,200 12,100 3,170 2,110 2,380 2,810 2,740 2,350
28 2,220 2,620 3,820 9,000 19,500 11,500 3,060 2,090 2,380 2,780 2,690 2,310
29 2,190 2,780 3,920 9,150 19,600 11,100 2,980 2,080 2,390 2,790 2,660 2,260
30 2,170   3,980 9,370 19,700 10,800 2,910 2,070 2,410 2,790 2,640 2,240
31 2,210   4,030   19,800   2,840 2,070   2,770   2,250