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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 06295000 Yellowstone River at Forsyth MT


Rosebud County, Montana
Hydrologic Unit Code 10100001
Latitude  46°15'59.89", Longitude 106°41'28.69" NAD83
Drainage area 40,152  square miles
Contributing drainage area 39,460  square miles
Gage datum 2,504.62 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 41 - 42 years of record in, ft3/s   (Calculation Period 1977-10-01 -> 2019-09-30)

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 5,460 5,560 6,020 6,890 10,400 29,400 26,900 10,600 6,400 7,000 7,190 6,400
2 5,470 5,530 6,020 6,910 10,600 29,400 26,600 10,200 6,350 6,990 7,200 6,360
3 5,510 5,570 6,120 6,940 10,800 29,400 26,100 9,900 6,340 7,090 7,270 6,290
4 5,460 5,640 6,240 6,980 11,000 29,400 25,500 9,580 6,290 7,260 7,190 6,270
5 5,430 5,680 6,220 6,980 11,200 29,400 25,000 9,260 6,230 7,370 7,140 6,260
6 5,460 5,690 6,170 6,980 11,500 29,900 24,200 8,990 6,190 7,380 7,110 6,180
7 5,480 5,720 6,180 7,010 11,700 31,300 23,300 8,710 6,140 7,390 7,090 6,090
8 5,490 5,690 6,270 7,030 12,300 33,400 22,500 8,500 6,130 7,400 7,020 6,020
9 5,520 5,630 6,430 7,140 13,600 33,700 21,900 8,250 6,170 7,390 7,000 5,930
10 5,560 5,690 6,660 7,330 14,300 33,500 21,200 8,020 6,160 7,400 7,000 6,000
11 5,530 5,730 6,910 7,600 14,900 33,400 20,500 7,880 6,190 7,390 6,960 6,050
12 5,540 5,730 7,160 7,710 15,500 33,000 20,000 7,720 6,320 7,360 6,880 6,040
13 5,570 5,660 7,280 7,720 15,900 32,300 19,600 7,560 6,440 7,410 6,770 6,030
14 5,610 5,650 7,570 7,730 15,900 31,700 18,800 7,430 6,530 7,410 6,740 6,050
15 5,650 5,720 7,790 7,660 16,300 31,800 18,100 7,370 6,660 7,380 6,730 6,090
16 5,680 5,800 7,630 7,680 16,800 31,800 17,300 7,330 6,720 7,420 6,810 6,010
17 5,690 5,910 7,440 7,830 17,400 31,900 16,600 7,230 6,750 7,410 6,820 5,880
18 5,630 6,020 7,390 7,970 18,600 32,500 16,000 7,140 6,770 7,320 6,790 5,790
19 5,520 6,140 7,390 7,990 20,300 32,500 15,400 7,030 6,920 7,340 6,760 5,760
20 5,480 6,240 7,300 8,120 21,500 32,100 14,800 6,910 7,060 7,330 6,680 5,700
21 5,550 6,180 7,150 8,350 22,900 31,900 14,300 6,830 7,030 7,230 6,600 5,670
22 5,630 6,130 7,150 8,540 23,100 31,400 14,000 6,790 7,070 7,180 6,550 5,680
23 5,650 6,160 7,160 8,700 24,300 30,600 13,500 6,720 7,090 7,260 6,440 5,680
24 5,710 6,170 7,080 9,010 25,100 30,400 13,100 6,770 7,130 7,280 6,390 5,640
25 5,620 6,190 7,030 9,450 25,500 30,000 12,700 6,780 7,240 7,240 6,420 5,640
26 5,660 6,070 7,050 9,740 26,200 29,500 12,400 6,670 7,330 7,160 6,460 5,670
27 5,640 5,980 7,020 9,850 27,000 29,200 12,300 6,630 7,160 7,200 6,570 5,670
28 5,610 6,040 6,980 9,930 27,400 29,000 12,200 6,540 7,040 7,160 6,610 5,660
29 5,550 5,890 7,000 10,000 27,500 28,300 11,800 6,490 7,000 7,120 6,640 5,570
30 5,540   6,950 10,200 28,000 27,400 11,300 6,430 7,020 7,210 6,500 5,490
31 5,590   6,900   29,200   10,900 6,410   7,210   5,570