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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 August 11, 2017 - USGS streamflow monitoring will be discontinued at the following site effective October 1, 2017 :
  • 06307600 Hanging Woman Cr nr Birney, MT
USGS streamflow monitoring were discontinued at the following sites effective July 1, 2017 :
  • 06071300 Little Prickly Pear Cr at Wolf, MT
  • 06077500 Smith R at Eden, MT
  • 06130000 Flatwillow Cr nr Mosby, MT
  • 12338300 N Fk Blackfoot R ab Dry Gulch nr Ovando, MT
USGS monitoring activities at these sites are funded jointly by partner agencies and the USGS Groundwater and Streamflow Information Program. Lack of partner funding for these sites results in discontinuation of all streamgaging activities. Questions or concerns can be directed to Kirk Miller (kmiller@usgs.gov; 307-775-9168).

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 12301933 Kootenai River bl Libby Dam nr Libby MT


Lincoln County, Montana
Hydrologic Unit Code 17010101
Latitude  48°24'02.39", Longitude 115°19'07.39" NAD83
Drainage area 8,999  square miles
Gage datum 2,100 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 45 - 46 years of record in, ft3/s   (Calculation Period 1971-10-01 -> 2017-09-30)

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 11,000 10,800 7,760 5,540 7,270 11,700 14,100 12,300 9,450 9,690 12,200 16,300
2 11,500 11,100 7,930 5,670 7,560 12,300 14,400 12,200 8,830 9,820 12,700 16,600
3 12,000 10,900 8,200 5,590 7,540 12,700 14,600 12,000 8,970 9,940 13,000 15,800
4 12,000 9,930 7,740 5,710 7,530 12,900 14,200 11,900 9,110 10,400 13,200 16,100
5 12,600 9,820 7,220 5,810 7,540 12,700 13,800 11,600 9,030 10,500 12,600 16,900
6 12,400 9,830 6,940 5,860 7,630 12,800 13,400 11,600 8,750 10,100 12,500 16,700
7 12,400 10,700 7,000 5,910 7,290 13,100 13,200 11,600 8,570 10,100 12,300 17,100
8 12,300 11,000 7,210 6,180 7,200 13,400 12,500 11,800 8,980 10,200 12,900 17,600
9 12,600 10,300 7,270 6,080 7,080 13,900 12,400 11,900 9,720 10,200 13,500 17,400
10 12,300 9,680 7,100 6,140 7,290 13,800 12,500 11,500 9,900 10,600 14,100 16,000
11 12,400 9,910 6,320 6,510 7,270 14,700 12,600 11,500 9,390 10,800 14,100 16,400
12 12,800 9,120 5,780 6,930 7,210 15,100 12,300 10,900 9,070 11,000 13,900 16,900
13 13,200 9,150 5,740 6,980 7,270 15,000 11,700 10,800 9,300 11,100 13,600 17,100
14 13,100 9,560 5,940 6,600 7,380 15,000 11,600 11,000 9,590 11,200 13,800 17,300
15 12,300 9,630 6,100 6,710 7,790 15,400 11,900 10,800 9,920 11,200 14,500 17,300
16 11,700 9,560 6,040 6,680 8,440 15,600 12,100 10,900 9,560 11,400 14,600 16,900
17 11,200 8,970 6,040 6,710 9,150 15,200 12,500 11,200 9,730 11,700 15,500 16,400
18 10,800 8,720 5,790 6,740 9,220 15,200 12,200 11,100 9,980 11,500 15,500 16,300
19 10,300 8,390 5,420 6,650 9,370 15,100 11,900 10,800 9,560 11,800 16,000 16,700
20 10,100 8,710 5,270 6,460 9,450 14,900 11,700 11,200 9,930 11,400 15,800 16,400
21 10,100 8,720 5,410 6,500 9,870 14,800 11,900 11,400 10,100 10,800 16,200 16,200
22 10,400 8,570 5,230 6,810 10,400 14,600 11,900 10,800 10,400 10,700 15,000 16,700
23 10,600 8,870 5,210 6,830 11,000 14,800 11,700 10,800 9,940 10,900 14,600 16,700
24 10,700 8,790 5,480 6,830 11,000 14,800 11,600 10,700 9,930 11,200 14,300 15,300
25 10,900 8,470 5,380 6,820 10,800 14,800 11,700 10,500 10,300 11,200 14,600 12,400
26 10,900 8,220 5,340 6,800 11,000 15,000 11,700 9,880 9,890 11,500 14,200 12,800
27 10,800 8,160 5,300 6,680 10,900 14,400 11,400 9,590 10,100 11,400 13,900 13,300
28 10,500 7,720 5,490 6,880 10,900 14,100 11,600 9,800 10,500 11,100 13,900 14,300
29 10,700 7,530 5,470 7,190 11,100 14,300 11,800 9,600 10,300 11,400 13,800 14,100
30 10,800   5,250 7,240 10,800 14,100 11,800 9,830 10,500 11,400 14,700 13,200
31 11,000   5,490   10,900   12,300 9,780   11,900   12,500