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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 06066500 Missouri River bl Holter Dam nr Wolf Cr MT


Lewis And Clark County, Montana
Hydrologic Unit Code 10030102
Latitude  46°59'41.06", Longitude 112°00'38.40" NAD83
Drainage area 16,924  square miles
Gage datum 3,464.11 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 1945-10-01 -> 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 4,760 4,870 4,790 5,050 5,820 7,840 8,270 4,370 4,110 4,180 4,490 4,670
2 4,860 4,830 4,820 5,070 5,780 7,890 7,900 4,350 4,100 4,200 4,510 4,710
3 4,870 4,820 4,820 5,010 5,740 7,880 7,730 4,370 4,090 4,190 4,520 4,750
4 4,840 4,800 4,850 5,010 5,790 7,930 7,450 4,340 4,120 4,170 4,530 4,810
5 4,860 4,810 4,820 4,950 5,920 7,890 7,460 4,340 4,150 4,180 4,520 4,810
6 4,820 4,810 4,770 4,970 6,080 8,020 7,290 4,350 4,180 4,170 4,530 4,830
7 4,780 4,800 4,790 5,070 6,190 8,400 7,050 4,320 4,210 4,150 4,520 4,800
8 4,790 4,820 4,800 5,160 6,300 8,520 6,800 4,310 4,130 4,160 4,530 4,820
9 4,820 4,830 4,830 5,230 6,330 8,270 6,620 4,240 4,170 4,150 4,510 4,800
10 4,850 4,790 4,820 5,250 6,420 8,590 6,440 4,280 4,180 4,160 4,530 4,800
11 4,850 4,800 4,900 5,300 6,560 8,820 6,450 4,270 4,220 4,180 4,580 4,810
12 4,860 4,820 4,930 5,300 6,500 8,920 6,210 4,280 4,220 4,220 4,560 4,790
13 4,820 4,830 4,950 5,260 6,520 9,030 5,990 4,300 4,190 4,280 4,590 4,850
14 4,780 4,830 4,950 5,270 6,560 8,840 5,770 4,270 4,180 4,290 4,560 4,830
15 4,790 4,810 4,940 5,330 6,530 8,750 5,600 4,250 4,150 4,270 4,580 4,840
16 4,770 4,770 4,900 5,380 6,580 8,700 5,480 4,240 4,120 4,280 4,560 4,830
17 4,760 4,750 4,890 5,400 6,640 8,790 5,310 4,230 4,150 4,290 4,550 4,830
18 4,770 4,760 4,930 5,490 6,650 8,970 5,250 4,210 4,150 4,280 4,550 4,810
19 4,780 4,770 4,930 5,560 6,680 9,070 5,070 4,170 4,120 4,250 4,560 4,800
20 4,780 4,770 4,920 5,580 6,730 8,950 5,000 4,180 4,090 4,270 4,600 4,800
21 4,790 4,740 4,920 5,690 6,800 8,890 4,880 4,180 4,080 4,340 4,620 4,780
22 4,810 4,760 4,900 5,780 6,840 8,850 4,780 4,150 4,070 4,390 4,590 4,750
23 4,790 4,750 4,920 5,770 6,960 8,780 4,690 4,130 4,130 4,400 4,550 4,600
24 4,770 4,750 4,930 5,770 7,120 8,770 4,630 4,140 4,150 4,360 4,580 4,650
25 4,800 4,790 4,930 5,800 7,190 8,710 4,580 4,140 4,200 4,400 4,570 4,700
26 4,850 4,750 4,920 5,770 7,130 8,610 4,490 4,110 4,200 4,420 4,590 4,740
27 4,860 4,740 4,910 5,690 7,130 8,620 4,470 4,120 4,210 4,390 4,630 4,760
28 4,870 4,760 4,920 5,740 7,280 8,680 4,480 4,110 4,260 4,430 4,580 4,780
29 4,870 4,830 4,990 5,760 7,410 8,730 4,450 4,100 4,230 4,470 4,620 4,750
30 4,850   4,960 5,770 7,460 8,550 4,440 4,080 4,260 4,510 4,640 4,660
31 4,860   4,970   7,740   4,370 4,090   4,520   4,710