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USGS Surface-Water 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 12419000 SPOKANE RIVER NR POST FALLS ID


Kootenai County, Idaho
Hydrologic Unit Code 17010305
Latitude  47°42'11", Longitude 116°58'40" NAD83
Drainage area 3,830  square miles
Gage datum 2,050 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 1912-10-01 -> 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 5,040 5,530 7,110 11,100 17,200 14,900 3,850 1,080 859 1,400 2,180 4,200
2 5,050 5,620 7,100 11,300 17,100 14,500 3,570 1,060 888 1,430 2,180 4,250
3 5,020 5,620 7,050 11,500 17,100 14,200 3,320 1,070 919 1,460 2,200 4,340
4 4,920 5,620 7,030 11,800 17,100 13,800 3,130 1,020 917 1,530 2,240 4,570
5 4,930 5,600 7,040 12,000 17,100 13,400 3,060 990 906 1,580 2,330 4,670
6 4,950 5,560 7,050 12,200 17,100 13,000 2,980 966 920 1,580 2,410 4,720
7 4,920 5,610 7,070 12,400 17,200 12,700 2,890 936 948 1,590 2,480 4,640
8 4,930 5,690 7,090 12,600 17,200 12,300 2,710 905 1,010 1,620 2,520 4,540
9 4,900 5,840 7,160 12,900 17,300 11,900 2,540 918 1,040 1,620 2,520 4,430
10 4,890 6,060 7,180 13,100 17,400 11,400 2,420 903 1,050 1,620 2,520 4,420
11 4,910 6,190 7,320 13,300 17,400 11,100 2,350 915 1,060 1,690 2,490 4,520
12 4,930 6,260 7,520 13,600 17,400 10,700 2,240 903 1,090 1,740 2,500 4,720
13 4,930 6,290 7,660 13,800 17,400 10,300 2,100 890 1,150 1,740 2,560 4,850
14 4,920 6,280 7,860 14,100 17,400 9,800 2,060 868 1,170 1,760 2,690 4,870
15 4,960 6,310 8,030 14,400 17,500 9,410 2,010 847 1,190 1,760 2,790 4,820
16 5,090 6,360 8,250 14,800 17,500 9,190 1,960 841 1,230 1,760 2,750 4,780
17 5,200 6,470 8,410 15,000 17,600 8,930 1,830 817 1,260 1,730 2,800 4,900
18 5,290 6,540 8,590 15,200 17,700 8,640 1,740 824 1,260 1,750 2,840 4,980
19 5,460 6,520 8,750 15,400 17,700 8,130 1,670 820 1,280 1,760 2,880 4,980
20 5,550 6,670 8,930 15,700 17,600 7,770 1,610 828 1,290 1,800 2,940 4,970
21 5,530 6,850 9,080 16,000 17,500 7,420 1,580 842 1,310 1,880 3,080 5,060
22 5,480 7,010 9,260 16,200 17,400 7,150 1,550 822 1,330 1,920 3,220 5,110
23 5,540 7,140 9,440 16,400 17,300 6,910 1,470 865 1,370 1,920 3,330 5,190
24 5,590 7,160 9,600 16,700 17,100 6,470 1,400 879 1,360 1,940 3,500 5,250
25 5,560 7,190 9,770 16,800 16,900 6,130 1,350 888 1,360 1,980 3,620 5,210
26 5,610 7,200 9,960 16,900 16,700 5,640 1,320 918 1,380 2,000 3,780 5,190
27 5,580 7,200 10,100 17,000 16,600 5,300 1,230 932 1,380 2,000 3,950 5,140
28 5,590 7,130 10,200 17,100 16,300 4,960 1,200 888 1,390 2,050 4,010 5,150
29 5,620 7,460 10,400 17,100 15,900 4,540 1,190 854 1,390 2,080 3,990 5,200
30 5,540   10,600 17,200 15,500 4,180 1,190 847 1,430 2,190 4,040 5,220
31 5,440   10,800   15,200   1,130 837   2,210   5,150