Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins

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 12322000 KOOTENAI RIVER AT PORTHILL ID


Boundary County, Idaho
Hydrologic Unit Code 17010104
Latitude  48°59'47", Longitude 116°30'27" NAD83
Drainage area 13,700  square miles
Gage datum 1,700 feet above NGVD29
Output formats
HTML table of all data
Tab-separated data
Reselect output format

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 2013-10-01 -> 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 9,860 7,960 7,980 14,600 22,800 31,000 15,200 10,300 8,930 7,320 7,480 16,700
2 9,310 7,740 8,140 14,600 24,300 30,000 15,000 10,200 8,560 6,600 7,940 18,100
3 9,610 7,640 8,270 14,500 25,400 29,700 14,800 9,990 8,430 6,200 7,700 19,600
4 9,480 7,620 8,260 14,600 26,000 30,200 14,700 9,770 8,310 5,770 7,680 20,000
5 9,390 7,880 8,400 14,700 26,900 29,200 14,500 9,810 8,190 5,530 7,900 20,200
6 9,290 8,360 9,180 14,500 28,400 28,300 14,200 9,760 8,170 5,420 8,380 20,500
7 8,990 9,320 9,550 14,500 29,400 27,800 13,900 9,700 8,150 5,360 8,590 20,300
8 8,440 10,600 10,000 14,900 28,800 26,900 13,900 9,750 8,100 5,210 9,400 20,000
9 8,050 11,000 10,500 15,600 27,800 26,100 13,800 9,650 8,070 5,230 10,500 20,300
10 7,870 10,600 11,100 16,300 27,100 25,400 13,600 9,590 8,070 5,270 11,800 22,500
11 8,040 10,400 10,600 16,900 26,400 24,700 13,600 9,550 8,090 5,230 12,200 22,300
12 8,770 10,200 10,200 17,300 26,400 24,100 13,300 9,430 8,120 5,210 13,500 22,300
13 9,260 10,300 10,300 17,700 27,000 23,700 13,100 9,390 8,040 5,180 14,400 22,000
14 9,560 10,700 10,400 17,500 28,100 23,200 12,900 9,440 7,990 5,350 15,000 21,500
15 9,050 11,400 11,200 17,200 29,600 22,500 12,900 9,430 7,880 5,560 16,000 21,000
16 8,410 11,500 13,300 17,400 31,700 21,700 12,700 9,330 7,880 5,510 15,900 20,300
17 8,980 11,400 14,400 17,600 35,000 20,900 12,500 9,460 7,830 5,610 14,900 20,900
18 10,100 10,800 14,000 17,600 36,300 20,700 12,200 9,410 7,860 5,500 15,500 21,600
19 10,300 10,700 14,600 17,500 35,700 20,100 12,000 9,150 7,880 5,440 16,600 22,200
20 10,400 10,700 14,900 17,800 34,500 19,500 11,700 9,080 7,850 5,450 16,800 21,900
21 9,590 10,700 13,500 18,000 34,300 19,000 11,300 9,080 7,860 5,550 16,600 21,300
22 8,980 11,100 13,400 18,600 34,600 18,400 11,300 9,030 7,860 5,410 15,800 21,300
23 8,990 10,800 14,400 19,200 35,600 17,600 11,100 9,080 7,740 5,460 15,300 21,000
24 10,100 10,300 14,500 19,400 36,100 17,200 11,100 9,040 7,640 5,350 15,400 21,500
25 10,600 10,100 14,800 19,800 35,600 16,800 10,900 8,960 7,670 5,330 15,500 20,700
26 11,200 9,980 14,800 20,200 34,600 16,500 10,600 8,990 7,680 5,300 16,300 18,300
27 11,100 9,380 14,700 20,900 34,000 16,100 10,400 8,940 7,620 5,470 16,700 18,600
28 9,750 8,510 14,600 21,600 33,500 15,900 10,500 8,890 7,550 5,870 16,600 18,600
29 9,090 8,430 14,700 21,800 33,000 15,800 10,400 8,970 7,470 7,040 16,500 17,200
30 8,790   14,600 22,200 32,100 15,500 10,500 9,000 7,210 7,310 16,100 13,600
31 8,410   14,200   31,400   10,400 8,930   7,130   11,100