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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 14238000 COWLITZ RIVER BELOW MAYFIELD DAM, WA


Lewis County, Washington
Hydrologic Unit Code 17080005
Latitude  46°30'38", Longitude 122°36'54" NAD27
Drainage area 1,400  square miles
Gage datum 226.60 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 1933-10-01 -> 2020-09-30)

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 8,550 8,990 6,940 6,440 6,810 7,220 5,670 3,100 2,520 2,910 4,890 10,000
2 8,760 8,540 6,850 6,590 6,920 7,120 5,440 3,040 2,560 2,930 4,850 10,200
3 8,750 8,220 6,870 6,410 6,940 7,180 5,240 2,960 2,570 3,090 5,030 10,300
4 8,910 8,630 6,840 6,410 6,990 7,220 4,970 2,870 2,590 3,050 5,230 10,700
5 8,990 8,640 6,830 6,380 7,070 7,310 4,940 2,830 2,650 3,080 5,520 10,500
6 8,730 8,680 6,720 6,430 7,190 7,260 4,930 2,830 2,620 3,080 5,760 9,920
7 9,070 8,970 6,540 6,530 7,130 7,390 4,890 2,840 2,590 3,140 6,020 9,870
8 9,040 8,940 6,420 6,480 7,100 7,470 4,910 2,790 2,640 3,180 6,380 9,570
9 8,870 8,800 6,550 6,460 7,050 7,610 4,920 2,760 2,610 3,330 6,410 9,690
10 8,860 8,880 6,730 6,490 7,070 7,610 4,810 2,750 2,630 3,560 6,310 9,990
11 8,590 8,480 6,710 6,440 7,100 7,510 4,660 2,770 2,660 3,610 6,390 10,200
12 8,810 8,230 6,780 6,420 7,160 7,400 4,590 2,720 2,620 3,580 6,570 10,600
13 8,940 8,000 6,790 6,350 7,260 7,310 4,530 2,700 2,550 3,560 6,720 10,600
14 9,000 7,810 6,720 6,480 7,330 7,190 4,510 2,740 2,570 3,530 6,760 10,300
15 9,240 7,810 6,770 6,660 7,220 7,210 4,510 2,680 2,640 3,470 6,990 10,100
16 9,420 7,860 6,770 6,700 7,190 7,290 4,370 2,710 2,640 3,500 7,040 10,100
17 9,240 7,800 6,770 6,740 7,250 7,350 4,170 2,670 2,610 3,480 7,110 9,680
18 9,110 7,710 6,660 6,940 7,380 7,150 4,010 2,620 2,620 3,590 7,410 9,470
19 8,990 7,850 6,740 6,900 7,390 7,080 3,950 2,630 2,560 3,670 7,630 9,400
20 8,970 7,900 6,610 6,950 7,550 7,190 3,890 2,620 2,560 3,860 7,950 9,620
21 9,000 7,920 6,500 7,030 7,720 7,010 3,810 2,640 2,590 3,960 8,460 9,520
22 8,930 8,140 6,550 7,060 7,650 6,790 3,770 2,610 2,580 4,020 8,630 9,620
23 8,980 7,980 6,480 6,910 7,570 6,670 3,690 2,590 2,590 4,260 9,100 9,900
24 9,270 8,160 6,410 6,850 7,490 6,570 3,680 2,580 2,590 4,340 9,970 9,510
25 9,450 8,010 6,430 6,750 7,480 6,420 3,620 2,570 2,590 4,630 9,970 9,020
26 9,140 7,920 6,360 6,640 7,440 6,280 3,510 2,560 2,680 4,740 9,920 8,750
27 8,780 7,720 6,360 6,590 7,610 6,190 3,450 2,570 2,750 4,560 10,100 8,890
28 8,800 7,480 6,280 6,680 7,610 6,070 3,390 2,590 2,760 4,720 10,300 9,030
29 9,010 7,810 6,240 6,810 7,500 5,900 3,350 2,600 2,730 4,730 10,000 9,150
30 8,990   6,270 6,840 7,410 5,870 3,350 2,560 2,800 4,730 9,780 9,150
31 9,040   6,240   7,340   3,270 2,550   4,750   8,910