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USGS Daily Statistics for Montana

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Questions or concerns about USGS data and data products in Montana and Wyoming can be directed to the Wyoming-Montana Water Science Center Data Management Section.


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 -> 2025-09-30)

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 5,270 5,550 6,720 8,010 10,500 30,300 31,300 10,900 6,760 7,470 7,560 6,510
2 5,220 5,550 6,790 7,890 10,600 30,700 30,100 10,600 6,680 7,530 7,580 6,450
3 5,220 5,590 6,940 7,910 10,800 30,900 29,500 10,300 6,590 7,660 7,610 6,410
4 5,200 5,650 7,120 8,080 11,100 31,700 29,100 10,100 6,660 7,680 7,600 6,410
5 5,100 5,730 7,100 7,930 11,300 32,400 28,700 9,810 6,620 7,730 7,540 6,400
6 5,080 5,750 7,200 7,750 11,700 33,100 27,800 9,470 6,580 7,860 7,530 6,260
7 5,140 5,770 7,370 7,570 12,100 34,000 26,800 9,220 6,550 7,910 7,520 6,060
8 5,200 5,810 7,390 7,570 12,700 35,600 25,800 8,950 6,650 7,820 7,450 5,910
9 5,250 5,750 7,480 7,670 13,300 36,600 25,000 8,650 6,820 7,770 7,410 5,790
10 5,280 5,710 7,660 7,750 13,800 37,100 24,200 8,340 6,780 7,740 7,380 5,750
11 5,290 5,720 7,960 7,870 14,300 37,000 23,300 8,110 6,730 7,740 7,350 5,770
12 5,320 5,770 8,180 7,990 14,700 37,100 22,600 7,920 6,740 7,690 7,270 5,770
13 5,360 5,950 8,510 8,080 15,100 36,800 21,800 7,840 6,850 7,750 7,160 5,770
14 5,360 6,200 8,680 8,150 15,600 36,400 21,100 7,860 6,960 7,790 7,100 5,760
15 5,400 6,240 8,500 8,090 15,700 36,800 20,300 7,790 7,020 7,810 7,100 5,790
16 5,460 6,360 8,510 8,020 16,300 37,300 19,500 7,680 7,030 7,780 7,120 5,800
17 5,510 6,510 8,270 8,080 17,000 37,400 18,700 7,580 7,010 7,770 7,120 5,720
18 5,560 6,620 8,240 8,190 17,800 38,300 17,900 7,410 7,040 7,760 7,090 5,670
19 5,540 6,650 8,410 8,290 18,900 38,400 17,200 7,210 7,120 7,820 7,030 5,660
20 5,570 6,510 8,990 8,380 20,100 37,700 16,500 7,030 7,280 7,790 6,960 5,650
21 5,560 6,510 9,040 8,510 21,400 37,100 15,800 6,900 7,350 7,750 6,940 5,640
22 5,590 6,470 8,940 8,630 22,600 36,700 15,200 6,950 7,450 7,770 6,890 5,680
23 5,590 6,470 8,780 8,740 23,200 36,300 14,600 7,050 7,520 7,740 6,870 5,700
24 5,620 6,470 8,620 9,060 24,200 36,000 14,000 7,090 7,570 7,800 6,740 5,660
25 5,630 6,480 8,540 9,450 24,700 35,600 13,500 6,940 7,710 7,750 6,680 5,600
26 5,540 6,500 8,680 9,690 24,700 35,400 13,100 6,820 7,720 7,690 6,640 5,590
27 5,480 6,550 8,550 9,900 25,400 35,000 12,800 6,660 7,670 7,670 6,700 5,550
28 5,450 6,580 8,600 10,200 26,300 34,400 12,600 6,630 7,650 7,620 6,740 5,520
29 5,410 6,740 8,440 10,300 27,200 33,700 12,400 6,700 7,690 7,600 6,660 5,380
30 5,470   8,400 10,500 28,600 32,700 11,700 6,760 7,460 7,580 6,600 5,350
31 5,520   8,230   29,400   11,200 6,770   7,570   5,330