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USGS Daily Statistics for Montana

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Questions or concerns about USGS streamflow data in Montana and Wyoming can be directed to Kirk Miller (kmiller@usgs.gov; 307-775-9168).

Updated June 5, 2020 - USGS water-resources monitoring activities have been suspended at the following sites:
  • 12323600 Silver Bow Creek at Opportunity, Montana (POR: 31 years)
  • 12323750 Silver Bow Creek at Warm Springs, Montana (POR: 35 years)

Updated May 12, 2020 - USGS water-resources monitoring activities were suspended effective June 1, 2020 at the following site:
  • 06088500 Muddy Creek near Vaughn, Montana (POR: 82 years)
USGS monitoring activities at these sites were funded by partner entities and USGS Cooperative Matching Funds (06088500). Lack of partner funding for these sites resulted in suspension of all USGS monitoring activities. Efforts are ongoing to secure funding for future monitoring. Historical data will continue to be available from USGS.

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 -> 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 5,470 5,570 6,050 6,930 10,500 29,500 27,100 10,700 6,410 7,090 7,220 6,440
2 5,480 5,540 6,060 6,940 10,700 29,600 26,900 10,200 6,360 7,090 7,230 6,390
3 5,510 5,600 6,160 6,980 10,900 29,700 26,400 9,950 6,350 7,190 7,310 6,310
4 5,480 5,670 6,250 7,020 11,000 29,600 25,800 9,620 6,290 7,350 7,230 6,290
5 5,460 5,670 6,230 7,020 11,200 29,700 25,300 9,300 6,230 7,450 7,200 6,310
6 5,500 5,670 6,180 7,020 11,500 30,200 24,500 9,020 6,190 7,450 7,180 6,220
7 5,530 5,690 6,190 7,060 11,700 31,700 23,600 8,730 6,140 7,450 7,160 6,130
8 5,530 5,680 6,290 7,090 12,300 33,800 22,700 8,520 6,140 7,460 7,080 6,050
9 5,550 5,640 6,450 7,200 13,600 34,300 22,100 8,270 6,180 7,450 7,050 5,950
10 5,580 5,700 6,670 7,390 14,300 34,000 21,500 8,030 6,180 7,450 7,050 6,020
11 5,540 5,730 6,920 7,690 14,800 33,600 20,800 7,910 6,230 7,450 7,010 6,070
12 5,560 5,740 7,160 7,820 15,500 33,100 20,300 7,770 6,390 7,420 6,930 6,070
13 5,580 5,670 7,280 7,800 15,900 32,300 19,900 7,620 6,530 7,460 6,820 6,070
14 5,600 5,670 7,560 7,790 15,900 31,700 19,100 7,480 6,620 7,460 6,790 6,080
15 5,620 5,750 7,770 7,710 16,300 32,000 18,400 7,410 6,720 7,440 6,780 6,120
16 5,660 5,820 7,620 7,720 16,900 32,100 17,600 7,360 6,770 7,480 6,860 6,040
17 5,670 5,930 7,450 7,860 17,600 32,300 16,900 7,260 6,800 7,460 6,870 5,910
18 5,610 6,040 7,390 8,000 18,900 32,900 16,300 7,170 6,820 7,370 6,840 5,830
19 5,520 6,150 7,390 8,020 20,700 32,800 15,700 7,060 6,960 7,380 6,820 5,790
20 5,490 6,240 7,320 8,140 21,700 32,500 15,000 6,940 7,090 7,370 6,720 5,730
21 5,560 6,180 7,200 8,370 23,000 32,300 14,500 6,850 7,070 7,290 6,650 5,710
22 5,650 6,130 7,240 8,580 23,100 31,800 14,200 6,800 7,140 7,240 6,600 5,720
23 5,670 6,190 7,300 8,830 24,200 30,900 13,700 6,730 7,180 7,310 6,490 5,730
24 5,720 6,200 7,280 9,150 25,000 30,600 13,300 6,780 7,210 7,330 6,440 5,680
25 5,640 6,210 7,350 9,560 25,400 30,100 12,900 6,780 7,310 7,290 6,460 5,680
26 5,670 6,090 7,380 9,850 26,100 29,600 12,500 6,670 7,390 7,210 6,510 5,710
27 5,660 6,000 7,290 9,970 26,800 29,300 12,400 6,640 7,220 7,250 6,610 5,710
28 5,630 6,060 7,180 10,100 27,500 29,100 12,400 6,550 7,110 7,220 6,640 5,690
29 5,580 5,990 7,140 10,200 27,700 28,500 11,900 6,490 7,080 7,180 6,670 5,590
30 5,580   7,050 10,400 28,100 27,600 11,400 6,430 7,120 7,250 6,540 5,510
31 5,620   6,970   29,300   11,000 6,420   7,240   5,580