Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins

USGS Daily Statistics for Montana

Click to hide state-specific text

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 12372000 Flathead River near Polson MT


Lake County, Montana
Hydrologic Unit Code 17010212
Latitude  47°40'49.03", Longitude 114°14'48.22" NAD83
Drainage area 7,079  square miles
Gage datum 2,692.7 feet above NGVD29
Output formats
HTML table of all data
Tab-separated data
Reselect output format

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 1938-10-01 -> 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 9,360 9,860 8,910 8,060 14,600 27,700 21,700 7,850 5,710 6,920 8,040 8,550
2 9,810 9,680 8,840 8,140 14,800 27,100 21,100 7,610 5,560 6,850 8,150 8,650
3 9,970 9,610 8,790 8,170 14,900 26,900 20,900 7,660 5,730 7,020 8,100 8,950
4 9,930 9,530 8,740 8,170 15,200 27,200 20,100 7,290 5,910 7,040 8,150 9,170
5 10,100 9,570 8,710 8,390 15,600 27,700 19,800 7,200 5,900 7,020 7,920 9,360
6 9,970 9,690 8,710 8,420 15,900 28,100 19,500 7,020 5,840 7,060 7,840 9,290
7 9,970 9,680 8,500 8,440 16,200 28,500 18,800 7,060 6,020 7,140 7,970 9,390
8 9,930 9,630 8,440 8,630 16,500 29,100 17,700 6,720 5,990 7,100 7,950 9,620
9 10,100 9,600 8,430 8,800 17,100 29,000 16,800 6,590 6,140 7,020 8,050 9,820
10 10,100 9,610 8,480 8,990 17,600 28,700 16,100 6,530 6,270 7,070 7,950 9,980
11 10,200 9,520 8,530 9,070 18,300 28,400 15,500 6,310 6,060 7,110 7,990 9,950
12 10,100 9,520 8,610 9,100 18,700 28,100 14,700 6,440 6,040 7,100 7,990 9,920
13 10,200 9,550 8,570 9,370 18,900 28,100 14,600 6,290 6,090 6,940 8,050 9,990
14 10,100 9,620 8,620 9,610 19,400 27,900 14,400 6,270 6,110 7,010 8,110 10,100
15 10,000 9,640 8,520 9,900 19,900 27,500 13,900 6,200 6,150 7,080 8,240 10,300
16 10,200 9,540 8,320 10,000 20,300 27,400 13,700 6,080 5,990 7,160 8,510 10,400
17 10,100 9,410 8,260 10,200 20,700 27,500 13,200 5,890 6,040 7,140 8,490 10,300
18 9,870 9,380 8,180 10,500 21,200 27,400 11,600 5,850 6,320 7,300 8,490 10,100
19 9,850 9,410 8,300 10,600 21,600 26,900 11,200 5,900 6,170 7,200 8,440 10,200
20 10,000 9,490 8,240 11,000 21,800 26,900 11,100 5,960 6,360 7,360 8,470 10,300
21 9,910 9,510 8,230 11,400 22,200 27,200 10,900 5,930 6,400 7,610 8,510 10,300
22 10,000 9,330 8,280 11,700 22,700 26,800 10,600 5,920 6,490 7,700 8,460 9,960
23 10,100 9,290 8,060 12,000 23,200 25,600 10,100 5,840 6,550 7,620 8,340 9,920
24 10,100 9,370 8,030 12,300 23,800 25,200 9,890 5,910 6,740 7,570 8,290 9,620
25 10,100 9,310 7,920 12,700 24,200 24,600 9,570 5,870 6,690 7,640 8,430 9,260
26 10,000 9,320 7,930 12,900 24,700 23,900 9,180 5,920 6,700 7,740 8,410 9,490
27 9,940 9,230 8,000 13,300 25,600 23,600 9,170 5,840 6,850 7,830 8,400 9,910
28 9,800 9,060 8,040 13,600 26,000 23,700 9,020 5,730 6,750 7,810 8,390 10,000
29 9,850 8,460 8,050 14,000 26,000 23,400 8,910 5,880 6,620 7,970 8,480 9,930
30 9,890   7,990 14,400 26,600 22,500 8,580 5,800 6,800 8,000 8,500 9,770
31 9,860   8,050   27,400   8,270 5,820   8,000   9,630