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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 14243000 COWLITZ RIVER AT CASTLE ROCK, WA


Cowlitz County, Washington
Hydrologic Unit Code 17080005
Latitude  46°16'30", Longitude 122°54'48" NAD27
Drainage area 2,238  square miles
Gage datum 0.00 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 1926-10-01 -> 2023-09-30)

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 13,300 14,200 11,600 11,200 10,100 9,730 7,330 3,840 2,960 3,590 6,890 14,300
2 13,900 13,600 11,300 11,000 10,100 9,750 7,010 3,670 3,000 3,600 7,020 15,600
3 14,300 13,000 11,300 10,600 10,200 9,710 6,770 3,610 3,010 3,750 7,360 16,000
4 14,300 12,900 11,100 10,300 10,200 9,750 6,440 3,480 3,020 4,040 7,530 16,100
5 14,700 12,800 11,100 10,400 10,300 9,930 6,240 3,420 3,090 3,980 7,850 15,300
6 14,800 13,300 11,400 10,300 10,600 9,820 6,170 3,420 3,110 3,930 8,360 15,100
7 15,200 14,000 10,900 10,300 10,500 10,100 6,070 3,370 3,030 3,910 8,890 14,700
8 15,300 14,300 10,500 10,300 10,300 10,300 5,980 3,320 3,010 3,960 8,980 13,800
9 14,700 13,800 10,800 10,200 10,100 10,500 6,020 3,310 3,000 4,190 8,950 14,400
10 14,500 13,500 11,200 10,100 10,100 10,500 5,910 3,270 3,030 4,490 8,740 15,300
11 14,100 13,000 11,200 10,100 10,100 10,200 5,730 3,270 3,090 4,560 8,900 15,400
12 14,400 12,900 11,200 10,200 10,200 9,850 5,590 3,240 3,050 4,540 9,390 15,900
13 14,900 12,600 11,300 10,200 10,300 9,660 5,520 3,160 2,940 4,460 10,100 16,000
14 15,300 12,200 11,100 10,500 10,500 9,610 5,470 3,190 2,950 4,470 10,400 15,300
15 15,300 12,200 11,300 10,600 10,500 9,610 5,450 3,160 3,030 4,420 10,600 14,900
16 15,400 12,600 11,200 10,400 10,400 9,720 5,360 3,170 3,080 4,450 10,800 15,000
17 15,000 12,900 10,900 10,400 10,400 9,720 5,220 3,190 3,030 4,420 11,000 14,700
18 15,000 12,500 10,800 10,500 10,500 9,510 4,950 3,140 3,090 4,540 11,600 14,700
19 14,700 12,700 10,900 10,300 10,600 9,270 4,840 3,080 3,050 4,730 11,900 14,400
20 14,600 12,900 10,700 10,400 10,500 9,300 4,750 3,050 3,040 5,080 12,300 15,000
21 14,400 12,700 10,500 10,400 10,800 9,290 4,650 3,030 3,060 5,170 12,400 15,700
22 14,100 13,100 10,700 10,300 10,700 9,020 4,560 3,020 3,040 5,350 12,400 15,700
23 14,300 13,000 10,700 10,300 10,500 8,780 4,450 3,000 3,070 5,720 13,000 16,200
24 15,000 13,000 10,600 10,300 10,300 8,600 4,420 3,020 3,090 5,820 14,600 15,300
25 15,100 12,600 10,700 10,200 10,400 8,400 4,360 3,020 3,060 6,120 15,800 14,400
26 14,500 12,500 10,400 9,930 10,400 8,190 4,260 3,020 3,070 6,360 15,300 14,000
27 13,600 12,500 10,500 9,900 10,400 8,040 4,140 3,020 3,210 6,090 14,700 14,400
28 13,600 12,200 10,600 10,000 10,400 7,870 4,110 2,990 3,270 6,300 14,600 14,600
29 13,700 14,100 10,800 10,100 10,300 7,690 4,070 3,010 3,480 6,810 14,200 14,400
30 13,900   11,000 10,100 10,100 7,540 4,070 3,000 3,460 6,680 14,000 14,700
31 14,000   11,200   9,850   3,990 2,960   6,550   13,900