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USGS 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 12181000 SKAGIT RIVER AT MARBLEMOUNT, WA


Skagit County, Washington
Hydrologic Unit Code 17110005
Latitude  48°32'02", Longitude 121°25'43" NAD27
Drainage area 1,381  square miles
Gage datum 308.64 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 1942-10-01 -> 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 5,690 7,160 6,270 5,450 5,680 7,010 8,350 5,530 3,910 3,980 5,750 7,020
2 6,040 6,860 6,330 5,150 5,680 7,040 8,620 5,320 3,950 4,060 5,940 7,180
3 6,320 6,600 6,250 5,210 5,740 6,900 8,310 5,310 3,840 4,030 6,050 7,070
4 6,770 6,640 6,310 5,120 5,730 6,970 8,010 5,360 3,720 4,480 6,590 7,400
5 6,670 6,790 6,330 5,160 5,820 7,050 7,930 5,200 3,770 4,080 6,400 7,000
6 6,640 6,800 6,410 5,290 5,930 6,900 7,890 5,140 3,910 3,990 6,830 6,450
7 7,000 6,820 6,420 5,360 5,880 7,010 7,970 5,090 4,010 4,120 6,820 6,060
8 7,060 6,870 6,290 5,460 5,980 6,880 7,980 5,020 4,170 4,090 7,150 6,010
9 6,700 7,030 6,360 5,430 5,940 6,880 7,970 4,900 4,170 3,910 6,770 6,250
10 6,760 7,380 6,360 5,300 5,970 6,900 7,680 4,850 4,150 4,190 7,060 6,610
11 6,750 7,000 6,270 5,330 6,300 6,990 7,640 4,740 4,170 4,160 6,890 6,560
12 6,910 6,780 6,530 5,410 6,670 7,040 7,880 4,740 3,900 4,150 7,470 6,290
13 6,950 6,600 6,350 5,480 6,540 7,180 7,990 4,740 3,910 4,190 7,430 6,500
14 6,790 6,700 6,280 5,620 6,430 7,150 7,950 4,660 3,940 4,280 8,080 6,280
15 6,820 6,930 6,080 5,600 6,590 7,330 7,920 4,690 4,010 4,370 8,000 6,070
16 6,960 6,920 5,970 5,690 6,700 7,590 7,640 4,440 3,940 4,850 7,280 5,900
17 7,110 6,800 5,680 5,670 6,630 7,840 7,530 4,290 4,090 5,170 7,270 5,890
18 7,480 6,680 5,720 5,630 6,620 7,910 7,440 4,320 4,040 4,700 6,890 5,960
19 7,350 6,580 5,850 5,760 6,580 7,940 7,200 4,090 3,950 5,010 6,930 5,700
20 6,810 6,620 5,790 5,800 6,690 7,920 7,020 3,970 4,040 5,250 6,780 5,760
21 6,760 6,640 5,860 5,650 6,600 7,780 6,930 3,930 3,920 5,170 6,790 5,700
22 6,730 6,760 5,770 5,640 6,590 7,540 6,890 3,910 3,930 5,370 7,020 5,690
23 6,750 6,860 5,790 5,720 6,620 7,650 6,910 3,860 3,910 5,010 7,480 5,730
24 6,910 6,900 5,680 5,770 6,740 7,670 6,800 3,900 4,020 4,910 7,240 5,780
25 6,950 6,820 5,680 5,610 6,870 7,710 6,670 4,050 3,960 5,200 7,250 5,500
26 7,080 6,700 5,630 5,620 6,960 7,710 6,580 3,840 4,010 5,260 7,430 5,910
27 6,860 6,530 5,620 5,800 6,990 7,720 6,190 3,780 4,070 5,440 7,750 5,860
28 7,220 6,400 5,630 6,010 7,010 7,770 5,940 3,720 4,050 5,490 7,520 5,880
29 6,980 6,110 5,590 5,950 6,920 8,260 5,810 3,800 4,110 5,490 7,240 5,790
30 7,010   5,690 6,010 6,820 8,350 5,830 3,910 4,170 5,660 7,010 5,630
31 6,880   5,650   6,970   5,700 3,840   5,920   5,600