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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 water year of record in, ft3/s   (Calculation Period 1977-10-01 -> 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 5,420 5,570 5,980 6,870 10,500 29,600 27,100 10,300 6,340 6,990 7,220 6,380
2 5,420 5,530 5,990 6,890 10,700 29,600 26,700 9,890 6,280 6,990 7,220 6,330
3 5,460 5,570 6,090 6,920 11,000 29,800 26,200 9,610 6,260 7,080 7,290 6,240
4 5,420 5,620 6,210 6,960 11,300 30,000 25,600 9,300 6,200 7,230 7,220 6,230
5 5,420 5,630 6,180 6,950 11,500 30,200 25,100 9,010 6,150 7,330 7,180 6,260
6 5,460 5,640 6,140 6,960 11,800 30,900 24,400 8,760 6,100 7,340 7,160 6,180
7 5,490 5,660 6,150 7,030 11,900 32,500 23,400 8,520 6,060 7,350 7,140 6,100
8 5,480 5,620 6,220 7,110 12,500 34,600 22,500 8,360 6,070 7,350 7,070 6,030
9 5,510 5,570 6,370 7,220 13,700 34,800 21,800 8,120 6,110 7,340 7,050 5,940
10 5,550 5,620 6,560 7,410 14,400 34,300 21,200 7,900 6,120 7,340 7,040 6,000
11 5,520 5,650 6,780 7,680 14,800 33,800 20,500 7,770 6,170 7,330 6,990 6,040
12 5,500 5,670 6,990 7,830 15,300 33,400 19,900 7,630 6,320 7,320 6,900 6,030
13 5,480 5,610 7,110 7,900 15,600 32,700 19,500 7,480 6,440 7,370 6,800 6,040
14 5,490 5,610 7,370 7,960 15,600 32,200 18,700 7,380 6,520 7,420 6,780 6,050
15 5,540 5,670 7,570 7,840 16,000 32,500 18,000 7,310 6,600 7,410 6,770 6,070
16 5,600 5,740 7,440 7,780 16,600 32,800 17,300 7,250 6,650 7,430 6,840 5,990
17 5,620 5,840 7,270 7,900 17,400 32,900 16,500 7,140 6,680 7,420 6,840 5,870
18 5,580 5,940 7,210 8,040 18,600 32,700 15,900 7,040 6,700 7,340 6,810 5,780
19 5,500 6,050 7,220 8,080 20,500 32,600 15,300 6,930 6,820 7,350 6,780 5,750
20 5,470 6,120 7,180 8,200 21,600 32,300 14,600 6,840 6,940 7,350 6,680 5,700
21 5,520 6,070 7,080 8,400 23,000 32,200 14,100 6,770 6,920 7,270 6,600 5,670
22 5,610 6,030 7,130 8,590 23,200 31,600 13,800 6,750 6,990 7,230 6,560 5,680
23 5,640 6,050 7,180 8,810 24,100 30,500 13,300 6,690 7,050 7,310 6,460 5,690
24 5,700 6,050 7,170 9,110 24,700 30,300 12,800 6,730 7,090 7,330 6,410 5,640
25 5,620 6,070 7,240 9,510 25,200 30,000 12,500 6,710 7,200 7,290 6,430 5,630
26 5,660 5,970 7,260 9,800 25,700 29,700 12,100 6,600 7,270 7,220 6,480 5,650
27 5,640 5,910 7,180 9,920 26,200 29,300 12,000 6,570 7,110 7,240 6,570 5,630
28 5,620 5,980 7,070 10,000 26,700 29,000 11,900 6,480 6,990 7,210 6,590 5,610
29 5,580 6,000 7,030 10,200 27,100 28,300 11,400 6,430 6,960 7,180 6,620 5,530
30 5,570   6,950 10,400 27,800 27,600 10,900 6,370 7,000 7,250 6,480 5,460
31 5,610   6,890   29,100   10,600 6,350   7,250   5,520