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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 near Post Falls, ID


Kootenai County, Idaho
Hydrologic Unit Code 17010305
Latitude  47°42'11", Longitude 116°58'37" NAD27
Drainage area 3,840  square miles
Gage datum 2,003 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 -> 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 4,980 5,480 7,020 11,100 17,000 14,700 3,780 1,070 844 1,400 2,170 4,140
2 4,980 5,570 7,030 11,300 16,900 14,300 3,510 1,050 872 1,420 2,180 4,190
3 4,950 5,570 7,030 11,500 16,900 14,000 3,260 1,060 904 1,450 2,200 4,280
4 4,860 5,580 7,040 11,700 17,000 13,700 3,090 1,010 903 1,520 2,240 4,500
5 4,870 5,560 7,080 11,800 17,000 13,300 3,010 976 895 1,570 2,330 4,590
6 4,890 5,520 7,090 12,000 17,100 12,800 2,930 953 912 1,570 2,420 4,640
7 4,870 5,560 7,110 12,200 17,100 12,500 2,840 924 944 1,580 2,490 4,560
8 4,870 5,650 7,140 12,400 17,200 12,200 2,670 893 1,000 1,610 2,530 4,470
9 4,850 5,780 7,190 12,700 17,300 11,800 2,520 904 1,030 1,610 2,530 4,370
10 4,830 5,990 7,210 12,900 17,300 11,300 2,410 890 1,040 1,610 2,530 4,350
11 4,850 6,100 7,320 13,200 17,300 10,900 2,330 903 1,050 1,680 2,500 4,450
12 4,870 6,160 7,500 13,400 17,300 10,500 2,210 896 1,090 1,730 2,520 4,630
13 4,880 6,190 7,630 13,600 17,300 10,200 2,070 884 1,140 1,730 2,580 4,760
14 4,880 6,170 7,810 13,900 17,300 9,740 2,030 863 1,160 1,750 2,710 4,780
15 4,940 6,200 7,970 14,200 17,400 9,360 1,980 839 1,180 1,750 2,800 4,730
16 5,060 6,250 8,190 14,500 17,400 9,160 1,930 830 1,230 1,750 2,760 4,690
17 5,160 6,340 8,340 14,700 17,400 8,900 1,800 806 1,250 1,730 2,810 4,810
18 5,240 6,410 8,520 14,900 17,500 8,610 1,710 812 1,260 1,740 2,850 4,880
19 5,410 6,380 8,680 15,100 17,600 8,110 1,640 809 1,280 1,750 2,890 4,890
20 5,480 6,510 8,850 15,400 17,500 7,750 1,580 817 1,290 1,790 2,930 4,880
21 5,460 6,680 9,000 15,700 17,400 7,410 1,550 830 1,300 1,880 3,060 4,960
22 5,410 6,830 9,180 15,900 17,200 7,140 1,520 811 1,320 1,910 3,200 5,010
23 5,460 6,950 9,360 16,100 17,100 6,900 1,450 851 1,360 1,920 3,320 5,090
24 5,510 6,970 9,520 16,300 16,800 6,460 1,390 864 1,350 1,960 3,480 5,140
25 5,480 7,010 9,700 16,500 16,600 6,120 1,330 873 1,350 1,990 3,590 5,110
26 5,520 7,030 9,910 16,600 16,400 5,630 1,300 901 1,370 2,020 3,740 5,090
27 5,500 7,060 10,100 16,700 16,300 5,290 1,220 915 1,370 2,020 3,900 5,050
28 5,510 7,010 10,200 16,800 16,000 4,900 1,180 873 1,380 2,050 3,960 5,060
29 5,520 7,380 10,400 16,900 15,700 4,460 1,180 840 1,380 2,080 3,940 5,110
30 5,480   10,600 16,900 15,300 4,100 1,170 833 1,420 2,180 3,980 5,140
31 5,390   10,800   15,000   1,110 823   2,210   5,080