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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 06065500 Missouri River bl Hauser Dam near Helena MT


Lewis And Clark County, Montana
Hydrologic Unit Code 10030101
Latitude  46°45'58.29", Longitude 111°53'19.66" NAD83
Drainage area 16,669  square miles
Gage datum 3,580 feet above NAVD88
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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 1922-10-01 -> 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 3,670 3,780 3,970 4,530 5,930 7,660 6,690 3,490 3,430 3,530 3,740 3,910
2 3,770 3,880 3,970 4,600 5,850 7,620 6,570 3,470 3,410 3,560 3,720 3,940
3 3,850 3,820 4,010 4,610 5,860 7,760 6,290 3,510 3,470 3,580 3,750 4,010
4 3,810 3,850 4,030 4,590 5,920 7,770 5,870 3,470 3,570 3,570 3,690 4,010
5 3,820 3,930 4,040 4,660 5,930 7,660 5,990 3,440 3,580 3,550 3,730 4,030
6 3,800 3,990 4,090 4,690 5,950 7,620 6,190 3,520 3,490 3,540 3,730 3,980
7 3,770 4,110 4,140 4,830 5,910 7,890 6,000 3,550 3,390 3,460 3,650 4,020
8 3,780 4,110 4,160 4,770 5,980 8,060 5,850 3,460 3,490 3,450 3,660 4,000
9 3,780 4,110 4,170 4,750 6,050 8,220 5,700 3,420 3,550 3,570 3,660 3,950
10 3,880 4,060 4,290 4,780 6,170 8,410 5,570 3,460 3,590 3,630 3,690 3,920
11 3,890 4,000 4,320 4,850 6,170 8,520 5,340 3,500 3,600 3,610 3,750 3,900
12 3,890 3,970 4,360 4,890 6,190 8,500 5,220 3,460 3,520 3,640 3,740 3,850
13 3,910 3,960 4,450 5,050 6,180 8,360 5,030 3,480 3,630 3,640 3,770 3,810
14 3,860 4,000 4,470 5,160 6,300 8,280 4,840 3,520 3,610 3,630 3,760 3,880
15 3,850 3,980 4,470 5,260 6,420 8,270 4,650 3,500 3,640 3,710 3,740 3,850
16 3,880 4,000 4,420 5,350 6,440 8,200 4,540 3,470 3,650 3,690 3,820 3,830
17 3,820 4,090 4,420 5,360 6,510 8,280 4,450 3,490 3,630 3,640 3,810 3,860
18 3,830 3,970 4,420 5,310 6,590 8,570 4,390 3,490 3,610 3,680 3,860 3,850
19 3,840 3,930 4,460 5,280 6,650 8,380 4,200 3,480 3,560 3,720 3,940 3,770
20 3,910 3,930 4,510 5,380 6,950 8,170 4,120 3,460 3,590 3,680 3,950 3,740
21 3,880 3,940 4,620 5,470 7,060 8,100 4,040 3,480 3,580 3,720 3,840 3,770
22 3,790 3,890 4,640 5,430 7,060 7,840 3,970 3,470 3,610 3,700 3,810 3,810
23 3,820 3,980 4,580 5,400 7,140 7,810 3,930 3,560 3,630 3,650 3,820 3,890
24 3,830 4,010 4,580 5,540 7,170 7,670 3,850 3,510 3,720 3,670 3,790 3,880
25 3,820 4,060 4,590 5,600 7,170 7,580 3,750 3,540 3,750 3,720 3,750 3,490
26 3,790 4,000 4,540 5,640 7,340 7,380 3,640 3,520 3,620 3,680 3,880 3,660
27 3,740 3,950 4,480 5,560 7,460 7,190 3,620 3,530 3,560 3,720 3,910 3,860
28 3,800 3,980 4,500 5,750 7,700 7,070 3,580 3,570 3,640 3,690 3,820 3,770
29 3,900 4,520 4,560 5,770 7,890 6,930 3,570 3,540 3,620 3,770 3,910 3,730
30 3,910   4,550 5,810 7,760 6,790 3,510 3,530 3,620 3,750 3,890 3,700
31 3,870   4,540   7,740   3,550 3,500   3,710   3,710