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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 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 105 - 106 years of record in, ft3/s   (Calculation Period 1912-10-01 -> 2018-09-30)

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 5,060 5,550 7,160 11,100 17,100 15,000 3,890 1,090 865 1,410 2,170 4,210
2 5,070 5,650 7,140 11,300 17,100 14,600 3,600 1,070 895 1,430 2,170 4,270
3 5,040 5,640 7,090 11,600 17,100 14,300 3,340 1,080 924 1,460 2,190 4,360
4 4,940 5,640 7,080 11,800 17,200 13,900 3,160 1,030 917 1,540 2,230 4,590
5 4,950 5,620 7,090 12,000 17,200 13,500 3,080 996 905 1,580 2,320 4,680
6 4,970 5,580 7,100 12,200 17,200 13,100 3,000 972 919 1,590 2,400 4,740
7 4,940 5,620 7,120 12,400 17,200 12,800 2,910 942 948 1,600 2,470 4,650
8 4,950 5,710 7,140 12,600 17,300 12,400 2,730 910 1,010 1,620 2,520 4,550
9 4,920 5,860 7,210 12,800 17,300 12,000 2,560 923 1,040 1,620 2,520 4,440
10 4,910 6,080 7,230 13,000 17,300 11,500 2,440 908 1,050 1,620 2,520 4,430
11 4,930 6,210 7,370 13,300 17,400 11,200 2,370 919 1,060 1,690 2,490 4,540
12 4,950 6,290 7,580 13,500 17,300 10,800 2,260 906 1,090 1,740 2,510 4,730
13 4,950 6,320 7,720 13,700 17,400 10,400 2,130 893 1,150 1,740 2,560 4,860
14 4,930 6,300 7,920 14,000 17,400 9,890 2,080 871 1,170 1,760 2,690 4,880
15 4,980 6,340 8,090 14,400 17,400 9,490 2,030 850 1,190 1,770 2,780 4,840
16 5,110 6,390 8,310 14,700 17,400 9,290 1,980 845 1,230 1,760 2,760 4,800
17 5,220 6,500 8,470 14,900 17,500 9,030 1,840 820 1,260 1,740 2,810 4,920
18 5,310 6,580 8,660 15,100 17,600 8,740 1,750 827 1,270 1,750 2,850 4,990
19 5,490 6,550 8,820 15,400 17,700 8,230 1,680 823 1,290 1,760 2,890 4,990
20 5,570 6,700 8,990 15,600 17,500 7,860 1,620 833 1,300 1,790 2,950 4,980
21 5,550 6,890 9,140 15,900 17,500 7,500 1,590 847 1,310 1,880 3,090 5,070
22 5,500 7,050 9,320 16,200 17,400 7,220 1,570 827 1,330 1,920 3,230 5,120
23 5,560 7,180 9,490 16,400 17,300 6,980 1,490 870 1,380 1,920 3,350 5,200
24 5,620 7,200 9,650 16,600 17,100 6,540 1,420 885 1,360 1,940 3,520 5,260
25 5,580 7,240 9,810 16,800 16,900 6,200 1,360 894 1,360 1,980 3,640 5,230
26 5,630 7,240 9,990 16,900 16,800 5,710 1,330 924 1,380 2,000 3,800 5,200
27 5,600 7,250 10,100 17,000 16,600 5,360 1,240 939 1,380 2,000 3,970 5,150
28 5,610 7,170 10,200 17,000 16,300 5,010 1,210 895 1,390 2,050 4,030 5,160
29 5,640 7,460 10,400 17,100 16,000 4,590 1,200 859 1,390 2,080 4,010 5,210
30 5,570   10,600 17,100 15,600 4,230 1,200 853 1,430 2,180 4,050 5,240
31 5,460   10,800   15,300   1,140 843   2,200   5,170