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USGS Daily Statistics for Idaho

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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 water year of record in, ft3/s   (Calculation Period 1971-10-01 -> 2019-09-30)

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 10,800 10,500 7,810 5,950 7,640 12,000 13,900 12,100 9,410 9,490 12,100 16,500
2 11,400 10,800 7,970 6,070 7,910 12,700 14,200 12,100 8,810 9,580 12,500 16,700
3 11,800 10,700 8,230 6,000 7,900 13,200 14,400 11,900 8,890 9,690 12,800 15,900
4 11,800 9,770 7,790 6,100 7,890 13,300 14,000 11,800 8,990 10,100 13,000 16,200
5 12,400 9,690 7,370 6,160 7,860 13,200 13,700 11,500 8,900 10,200 12,500 17,100
6 12,300 9,710 7,140 6,210 7,860 13,300 13,200 11,500 8,630 9,890 12,500 16,900
7 12,200 10,500 7,200 6,240 7,530 13,500 13,000 11,500 8,470 9,840 12,300 17,300
8 12,100 10,900 7,400 6,510 7,440 13,800 12,400 11,600 8,860 9,920 12,800 17,700
9 12,400 10,200 7,450 6,420 7,320 14,200 12,200 11,700 9,560 9,920 13,400 17,500
10 12,100 9,530 7,190 6,470 7,490 14,200 12,400 11,400 9,730 10,300 13,900 16,100
11 12,300 9,760 6,440 6,820 7,500 15,100 12,500 11,400 9,250 10,500 13,900 16,500
12 12,600 9,080 6,000 7,220 7,450 15,300 12,100 10,900 8,940 10,700 13,700 17,100
13 13,000 9,230 5,980 7,270 7,510 15,200 11,600 10,800 9,160 10,800 13,400 17,300
14 12,900 9,670 6,170 6,910 7,610 15,200 11,500 10,900 9,440 10,900 13,500 17,500
15 12,100 9,730 6,330 7,020 8,140 15,600 11,800 10,700 9,750 10,900 14,200 17,300
16 11,700 9,630 6,270 6,980 8,870 15,700 12,000 10,800 9,410 11,100 14,400 16,900
17 11,300 8,870 6,270 7,010 9,550 15,300 12,300 11,200 9,570 11,400 15,200 16,400
18 10,900 8,630 6,070 7,010 9,650 15,200 12,100 11,000 9,810 11,200 15,300 16,300
19 10,500 8,500 5,910 6,920 9,850 15,100 11,700 10,700 9,410 11,500 15,700 16,700
20 10,100 8,840 5,580 6,750 9,920 14,900 11,600 11,100 9,760 11,100 15,700 16,400
21 10,100 8,850 5,750 6,810 10,300 14,800 11,700 11,300 9,970 10,500 16,000 16,400
22 10,400 8,650 5,900 7,100 10,800 14,600 11,800 10,700 10,200 10,400 14,800 16,900
23 10,700 8,850 5,900 7,110 11,300 14,800 11,600 10,800 9,770 10,800 14,500 16,800
24 10,900 8,690 6,060 7,180 11,300 14,800 11,500 10,700 9,770 11,100 14,200 15,500
25 11,100 8,380 5,970 7,190 11,200 14,700 11,600 10,500 10,100 11,000 14,500 12,600
26 11,000 8,210 5,920 7,190 11,300 14,900 11,600 9,840 9,730 11,300 14,000 13,000
27 10,700 8,190 5,880 7,080 11,200 14,300 11,300 9,560 9,920 11,200 13,800 13,500
28 10,400 7,770 6,060 7,270 11,300 14,000 11,500 9,770 10,300 10,900 14,000 14,400
29 10,700 7,530 6,010 7,570 11,400 14,100 11,600 9,570 10,200 11,200 14,100 14,100
30 10,600   5,710 7,610 11,200 13,900 11,700 9,790 10,300 11,300 14,900 13,100
31 10,700   5,910   11,300   12,100 9,740   11,700   12,300