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USGS Surface-Water Daily Statistics for Washington

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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 12150800 SNOHOMISH RIVER NEAR MONROE, WA


Snohomish County, Washington
Hydrologic Unit Code 17110011
Latitude  47°49'52", Longitude 122°02'50" NAD27
Drainage area 1,537  square miles
Gage datum 13.25 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 55 - 56 years of record in, ft3/s   (Calculation Period 1962-10-01 -> 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 9,920 12,800 9,290 10,500 11,800 14,200 9,110 3,750 2,830 4,910 10,400 14,000
2 10,300 11,600 8,930 10,300 11,600 14,900 9,050 3,660 3,340 4,660 11,200 15,200
3 10,700 11,400 9,050 9,820 11,900 14,600 8,990 3,550 3,180 4,670 10,800 15,800
4 11,000 11,400 9,270 9,430 11,900 14,400 8,860 3,500 2,870 4,520 12,500 17,000
5 12,600 10,600 9,530 10,200 12,200 14,400 8,540 3,390 2,680 4,270 11,500 14,900
6 12,700 10,000 10,200 11,400 12,600 14,400 8,260 3,300 2,740 3,960 11,100 13,300
7 13,500 10,200 9,760 11,100 12,400 14,200 8,100 3,180 2,850 4,050 12,800 12,500
8 14,900 10,100 9,170 10,400 12,300 13,900 7,910 3,250 2,870 4,430 13,600 12,100
9 14,000 10,600 9,460 10,300 12,300 13,300 8,070 3,070 2,870 4,760 12,800 12,300
10 13,100 10,600 10,300 10,300 12,300 12,800 7,770 2,910 2,880 4,930 12,400 12,900
11 12,400 10,200 10,500 10,200 12,300 12,800 7,440 2,830 3,130 5,020 12,600 13,400
12 11,600 9,730 10,800 10,300 12,900 12,800 7,350 2,810 3,030 4,840 12,700 13,100
13 12,400 10,600 10,900 10,500 13,200 13,000 7,860 2,810 2,710 5,080 13,300 13,900
14 13,500 10,700 10,600 10,800 13,300 12,900 7,500 2,790 2,870 5,530 14,300 13,800
15 15,000 11,600 10,800 11,000 13,500 12,800 7,070 2,700 3,060 5,900 13,200 13,500
16 14,800 12,900 10,900 10,600 13,800 12,700 6,760 2,720 3,230 6,480 13,100 13,100
17 14,800 12,100 10,600 10,500 14,000 12,300 6,580 2,680 3,370 6,390 12,700 13,100
18 16,000 11,400 10,200 10,400 13,700 12,200 6,350 2,650 3,800 6,100 12,800 13,100
19 16,300 12,400 10,700 10,200 13,700 12,400 5,900 2,650 3,390 6,160 12,700 11,900
20 15,000 12,600 10,200 11,100 13,900 11,900 5,710 2,640 3,480 7,130 12,900 11,800
21 13,600 11,500 9,710 11,100 13,800 11,500 5,580 2,640 3,710 7,960 13,000 11,900
22 12,000 11,300 9,240 10,700 14,100 11,200 5,290 2,660 3,690 8,390 13,000 11,400
23 11,800 10,500 9,630 10,800 14,100 11,100 5,000 2,650 4,170 8,360 13,300 11,400
24 13,500 10,500 9,730 11,300 13,700 10,900 4,900 2,780 3,970 7,710 16,100 11,800
25 14,100 9,930 9,660 11,100 13,600 10,900 4,810 2,860 3,790 7,770 17,600 11,500
26 13,200 9,220 9,610 10,700 13,600 10,500 4,650 3,000 3,420 8,230 16,200 12,400
27 12,300 9,080 9,410 10,900 13,600 9,970 4,550 2,860 3,290 8,760 13,900 12,200
28 12,300 9,510 9,250 11,800 13,900 9,720 4,360 2,920 3,260 8,460 14,000 11,300
29 12,600 13,600 9,380 12,000 14,400 9,870 4,280 2,910 3,520 8,510 14,200 10,700
30 14,000   10,000 11,900 14,800 9,480 4,130 2,890 4,350 8,940 14,200 10,900
31 14,100   10,700   14,100   3,940 2,750   10,200   10,000