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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 14211720 WILLAMETTE RIVER AT PORTLAND, OR


Multnomah County, Oregon
Hydrologic Unit Code 17090012
Latitude  45°31'03", Longitude 122°40'09" NAD83
Drainage area 11,200  square miles
Gage datum 1.55 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 1972-10-01 -> 2022-09-30)

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 67,100 58,300 47,100 43,400 29,900 22,700 12,400 8,620 8,850 13,200 23,400 56,000
2 65,600 57,500 46,900 42,000 29,200 22,900 12,100 8,560 8,940 13,100 25,200 58,600
3 63,800 55,700 45,900 40,900 28,700 23,100 11,900 8,520 9,010 13,000 25,600 62,800
4 62,800 52,600 45,300 40,100 29,300 23,100 11,900 8,380 9,320 13,000 24,700 66,400
5 62,100 49,000 45,200 39,400 29,500 23,200 11,700 8,640 9,470 13,100 24,200 65,800
6 62,700 47,700 46,100 38,400 29,300 23,200 11,300 8,580 9,630 13,100 24,800 64,500
7 62,800 49,100 45,800 39,200 29,000 24,300 10,800 8,550 9,540 13,300 26,600 64,000
8 62,400 51,600 45,100 39,400 28,400 24,600 10,700 8,750 9,630 13,100 28,000 63,300
9 62,900 53,400 44,100 39,800 27,900 24,000 10,400 8,600 9,940 13,400 28,000 62,100
10 63,800 52,500 44,600 40,000 27,300 23,100 10,400 8,440 9,950 13,600 28,600 61,600
11 66,200 49,000 45,000 40,400 27,100 22,300 10,100 8,350 10,200 14,000 29,500 61,700
12 66,900 46,700 45,000 40,500 27,100 21,200 9,940 8,460 10,400 14,100 30,000 61,400
13 70,600 46,500 45,300 39,700 26,700 20,200 9,700 8,550 10,500 14,200 31,100 62,100
14 72,600 47,000 45,600 39,900 25,700 19,600 9,660 8,420 10,500 14,500 32,500 64,200
15 72,900 48,200 46,600 39,200 26,000 18,800 9,630 8,280 10,600 14,700 34,400 64,700
16 73,500 49,600 47,900 38,100 25,900 18,100 9,480 8,400 10,700 14,500 36,100 65,900
17 73,800 52,100 47,700 37,300 26,400 17,600 9,400 8,530 10,900 14,700 37,000 66,700
18 73,900 54,000 46,800 36,100 27,000 17,100 9,350 8,550 11,200 15,000 38,300 66,100
19 74,300 56,300 45,600 35,300 27,300 16,500 9,350 8,510 11,700 15,400 39,600 64,600
20 72,500 57,600 44,300 33,600 27,500 15,900 9,310 8,570 11,800 16,100 42,200 63,900
21 69,400 57,800 43,100 32,900 26,900 15,800 9,180 8,620 11,700 16,500 44,900 65,600
22 66,200 56,700 42,100 32,600 26,500 15,500 9,140 8,610 11,700 17,400 47,500 66,700
23 64,300 55,600 42,200 32,200 25,900 14,900 9,010 8,680 11,600 17,900 49,500 66,000
24 63,300 54,600 42,900 32,400 25,300 14,400 8,850 8,630 11,800 17,900 51,200 64,400
25 63,500 53,700 43,400 33,600 24,700 13,900 8,850 8,770 11,700 17,500 53,100 63,300
26 62,700 51,600 42,500 34,300 24,300 13,800 8,600 8,860 11,800 18,400 55,600 61,600
27 61,100 50,100 41,700 34,200 24,000 13,400 8,790 8,940 11,900 18,800 56,300 61,600
28 59,600 48,600 41,700 34,100 23,900 13,300 8,550 8,870 12,100 19,200 57,200 63,600
29 59,200 46,700 42,000 32,700 23,500 13,100 8,530 8,830 12,300 20,200 56,400 65,600
30 58,600   43,200 31,400 23,400 12,900 8,660 8,900 12,800 21,000 55,200 68,700
31 57,400   43,800   23,100   8,580 8,690   21,900   69,300