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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 11, 2020 - USGS water-resources monitoring activities will be restored 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 this site was funded by our partner and USGS Cooperative Matching Funds (06088500). Lack of partner funding for this site 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 06309000 Yellowstone River at Miles City, MT


Custer County, Montana
Hydrologic Unit Code 10100001
Latitude  46°25'14.78", Longitude 105°51'36.12" NAD83
Drainage area 48,287.7  square miles
Contributing drainage area 47,596  square miles
Gage datum 2,333.3 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 1921-10-01 -> 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 5,250 5,500 6,730 8,080 10,500 30,400 31,500 11,100 6,830 7,550 7,560 6,510
2 5,200 5,510 6,810 7,940 10,600 30,700 30,300 10,800 6,760 7,610 7,580 6,450
3 5,200 5,550 6,970 7,970 10,800 30,800 29,800 10,500 6,670 7,740 7,600 6,420
4 5,170 5,620 7,150 8,140 11,000 31,600 29,300 10,200 6,750 7,760 7,590 6,430
5 5,060 5,720 7,130 7,990 11,200 32,300 28,900 9,990 6,710 7,800 7,530 6,400
6 5,040 5,740 7,240 7,800 11,500 33,000 28,000 9,630 6,660 7,950 7,520 6,240
7 5,100 5,760 7,420 7,600 12,000 33,800 27,000 9,360 6,640 8,000 7,490 6,020
8 5,170 5,810 7,440 7,580 12,600 35,200 26,000 9,060 6,740 7,900 7,430 5,860
9 5,220 5,760 7,540 7,660 13,200 36,300 25,200 8,740 6,910 7,810 7,390 5,740
10 5,250 5,720 7,730 7,740 13,800 37,000 24,400 8,420 6,870 7,790 7,350 5,700
11 5,250 5,720 8,040 7,870 14,300 37,000 23,500 8,190 6,800 7,790 7,330 5,730
12 5,320 5,770 8,280 7,980 14,700 37,100 22,800 8,000 6,810 7,730 7,250 5,730
13 5,370 5,970 8,620 8,050 15,200 36,700 22,100 7,920 6,930 7,790 7,150 5,730
14 5,390 6,230 8,800 8,070 15,700 36,300 21,300 7,950 7,040 7,820 7,080 5,720
15 5,430 6,270 8,600 8,010 15,900 36,800 20,600 7,890 7,110 7,810 7,070 5,760
16 5,480 6,400 8,610 7,970 16,400 37,200 19,700 7,780 7,130 7,790 7,090 5,770
17 5,530 6,560 8,350 8,060 17,100 37,300 18,900 7,690 7,100 7,780 7,090 5,690
18 5,570 6,670 8,340 8,170 17,900 38,400 18,100 7,510 7,130 7,770 7,070 5,640
19 5,530 6,700 8,520 8,250 19,000 38,800 17,400 7,320 7,210 7,830 7,010 5,640
20 5,560 6,570 9,130 8,350 20,100 38,000 16,700 7,120 7,360 7,800 6,940 5,630
21 5,540 6,560 9,170 8,470 21,400 37,300 16,000 6,970 7,440 7,750 6,930 5,630
22 5,560 6,510 9,050 8,600 22,500 36,900 15,500 7,010 7,510 7,770 6,880 5,660
23 5,550 6,510 8,880 8,720 23,200 36,700 14,900 7,120 7,580 7,740 6,860 5,680
24 5,590 6,520 8,710 9,060 24,200 36,400 14,200 7,150 7,630 7,790 6,720 5,630
25 5,590 6,530 8,630 9,450 24,700 35,900 13,800 7,010 7,780 7,750 6,660 5,570
26 5,500 6,540 8,790 9,690 24,800 35,700 13,300 6,890 7,780 7,680 6,620 5,570
27 5,450 6,590 8,650 9,900 25,600 35,200 13,100 6,720 7,750 7,670 6,680 5,550
28 5,410 6,610 8,710 10,200 26,600 34,600 12,900 6,690 7,730 7,620 6,730 5,520
29 5,370 6,630 8,540 10,300 27,500 34,000 12,600 6,770 7,780 7,590 6,660 5,370
30 5,420   8,500 10,500 28,900 33,000 11,900 6,830 7,550 7,570 6,600 5,330
31 5,470   8,320   29,500   11,400 6,840   7,560   5,320