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USGS Daily Statistics for the Nation

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
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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 1938-10-01 -> 2020-09-30)

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 9,370 9,980 9,040 8,130 14,900 28,200 21,700 7,920 5,720 7,040 8,200 8,570
2 9,850 9,810 8,980 8,210 15,100 27,500 21,100 7,690 5,530 6,960 8,330 8,670
3 10,000 9,720 8,920 8,230 15,200 27,400 20,900 7,750 5,680 7,130 8,280 8,970
4 9,970 9,620 8,870 8,220 15,500 27,700 20,100 7,370 5,870 7,140 8,330 9,200
5 10,100 9,660 8,850 8,430 15,900 28,100 19,900 7,280 5,850 7,110 8,080 9,400
6 10,000 9,780 8,860 8,460 16,100 28,500 19,600 7,090 5,770 7,160 7,990 9,320
7 10,000 9,750 8,630 8,470 16,400 28,900 18,900 7,130 5,960 7,240 8,120 9,410
8 9,950 9,700 8,550 8,660 16,700 29,500 17,900 6,770 5,950 7,200 8,080 9,630
9 10,100 9,650 8,540 8,810 17,300 29,100 16,900 6,640 6,130 7,110 8,180 9,840
10 10,200 9,650 8,580 9,000 17,700 28,800 16,200 6,580 6,290 7,170 8,050 10,000
11 10,200 9,560 8,640 9,090 18,400 28,400 15,600 6,360 6,080 7,210 8,100 9,940
12 10,100 9,560 8,720 9,100 18,800 28,200 14,800 6,490 6,090 7,200 8,100 9,920
13 10,200 9,580 8,680 9,390 19,000 28,200 14,700 6,340 6,150 7,030 8,160 9,990
14 10,100 9,650 8,720 9,640 19,500 28,000 14,500 6,320 6,180 7,100 8,230 10,100
15 10,000 9,680 8,620 9,970 20,100 27,600 14,000 6,240 6,220 7,170 8,350 10,300
16 10,200 9,580 8,400 10,100 20,500 27,400 13,900 6,100 6,050 7,230 8,630 10,400
17 10,000 9,450 8,350 10,300 20,900 27,500 13,300 5,910 6,110 7,210 8,600 10,300
18 9,790 9,430 8,250 10,700 21,400 27,400 11,700 5,860 6,400 7,370 8,580 10,100
19 9,790 9,480 8,390 10,800 21,800 27,000 11,300 5,910 6,240 7,270 8,540 10,200
20 9,970 9,600 8,330 11,200 22,100 26,900 11,100 5,990 6,440 7,430 8,580 10,300
21 9,870 9,630 8,320 11,600 22,500 27,300 11,000 5,970 6,490 7,700 8,610 10,300
22 9,990 9,450 8,370 11,900 23,000 26,800 10,700 5,970 6,580 7,810 8,550 9,970
23 10,100 9,420 8,140 12,300 23,600 25,600 10,200 5,890 6,660 7,740 8,420 9,930
24 10,100 9,500 8,110 12,600 24,200 25,200 10,000 5,970 6,870 7,690 8,380 9,620
25 10,100 9,450 8,010 13,000 24,600 24,500 9,690 5,930 6,820 7,770 8,530 9,240
26 10,000 9,460 8,030 13,200 25,100 23,700 9,290 5,980 6,840 7,880 8,500 9,480
27 9,950 9,370 8,110 13,600 25,900 23,400 9,270 5,910 7,000 7,980 8,500 9,930
28 9,830 9,190 8,150 14,000 26,400 23,600 9,100 5,790 6,890 7,950 8,480 10,000
29 9,910 8,600 8,150 14,300 26,400 23,400 9,000 5,950 6,750 8,130 8,550 9,950
30 9,970   8,090 14,700 27,000 22,500 8,670 5,850 6,920 8,150 8,530 9,780
31 9,950   8,150   27,900   8,360 5,860   8,140   9,640