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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 12305000 KOOTENAI RIVER AT LEONIA, ID


Boundary County, Idaho
Hydrologic Unit Code 17010104
Latitude  48°37'00.78", Longitude 116°02'57.10" NAD83
Drainage area 11,740  square miles
Gage datum 1,794.75 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 1971-10-01 -> 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 12,200 11,200 9,020 9,690 15,100 20,700 16,700 12,500 10,100 10,200 12,200 17,000
2 11,700 11,400 9,160 9,700 15,500 21,000 16,800 12,800 9,610 9,930 12,900 17,700
3 12,200 11,400 9,350 9,820 15,800 21,300 16,900 12,600 9,390 9,870 13,200 17,200
4 12,100 10,900 9,310 9,810 15,700 21,300 16,600 12,400 9,530 10,200 13,400 17,900
5 12,600 10,300 9,010 10,100 15,800 21,000 16,100 12,100 9,480 10,300 13,300 18,300
6 12,600 10,700 8,780 10,400 16,200 20,700 15,400 11,900 9,380 10,200 12,900 18,500
7 12,600 11,200 8,760 10,700 16,300 20,600 15,300 12,100 9,210 9,960 13,100 18,000
8 12,900 11,900 8,880 10,800 16,100 20,600 14,700 12,000 9,090 9,890 13,800 18,500
9 12,900 12,200 9,060 11,000 15,900 20,600 14,400 12,300 9,750 10,000 14,000 18,800
10 13,000 11,300 9,220 11,100 15,900 20,300 14,200 11,900 10,200 10,200 14,800 18,100
11 12,800 11,000 8,750 11,300 16,100 20,700 14,400 11,800 9,910 10,500 14,800 17,900
12 13,100 10,700 8,400 11,800 16,100 21,000 14,100 11,500 9,500 10,700 15,100 18,700
13 13,500 10,400 8,390 12,200 16,400 21,100 13,700 11,100 9,490 10,900 14,700 18,900
14 13,600 10,700 8,440 12,200 17,000 21,000 13,400 11,200 9,690 11,000 14,400 19,100
15 13,200 11,200 8,770 12,200 18,000 21,100 13,500 11,300 10,100 11,000 15,200 18,900
16 13,500 10,900 9,230 12,100 19,400 21,200 13,500 11,300 9,990 11,000 15,200 18,400
17 13,100 10,700 9,230 12,000 20,500 20,800 13,800 11,400 9,890 11,300 15,600 18,300
18 12,600 10,300 9,070 12,200 20,700 20,400 13,500 11,500 10,200 11,300 16,100 18,100
19 12,000 9,950 9,040 12,200 20,600 19,900 13,200 11,100 10,000 11,500 16,400 18,300
20 11,600 10,300 8,720 12,400 20,300 19,600 12,900 11,100 10,100 11,400 16,600 18,100
21 11,400 10,600 8,690 12,700 20,400 19,300 12,800 11,400 10,300 10,900 16,600 17,900
22 11,400 10,500 8,860 13,000 20,900 18,900 12,800 11,300 10,600 10,600 16,000 18,000
23 11,600 10,500 8,890 13,400 21,400 18,600 12,800 11,100 10,300 10,600 15,700 18,200
24 11,900 10,400 9,040 14,000 21,400 18,500 12,500 11,100 10,200 10,900 15,500 17,500
25 12,100 10,200 9,390 14,200 21,100 18,100 12,500 10,900 10,400 11,200 15,900 15,300
26 12,200 9,940 9,170 14,100 21,100 18,100 12,400 10,500 10,200 11,300 15,500 14,500
27 11,900 9,570 9,190 14,100 21,000 17,800 12,500 10,100 10,200 11,200 15,200 15,200
28 11,500 9,180 9,190 14,400 20,900 17,200 12,400 10,100 10,400 11,300 15,200 15,600
29 11,400 9,140 9,410 14,600 20,900 17,100 12,300 10,100 10,600 11,600 15,500 15,500
30 11,300   9,230 14,800 20,800 16,900 12,300 10,100 10,600 11,700 15,800 14,400
31 11,200   9,490   20,600   12,800 10,400   11,900   13,400