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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 -> 2021-09-30)

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 67,200 58,800 47,100 43,800 30,200 22,900 12,400 8,680 8,990 13,300 23,700 56,600
2 65,600 57,700 47,000 42,400 29,500 23,000 12,100 8,660 9,010 13,100 25,600 59,200
3 63,200 55,700 46,100 41,300 29,000 23,300 11,900 8,590 9,060 13,100 25,900 63,600
4 61,800 52,400 45,500 40,600 29,500 23,300 12,000 8,440 9,360 13,100 25,000 67,300
5 60,900 48,800 45,500 39,700 29,800 23,300 11,700 8,690 9,520 13,200 24,500 66,800
6 61,500 47,600 46,400 38,700 29,600 23,400 11,300 8,630 9,720 13,100 25,100 65,400
7 61,600 49,200 46,100 39,600 29,300 24,400 10,900 8,600 9,620 13,300 26,800 65,000
8 61,300 51,900 45,400 39,800 28,700 24,700 10,800 8,820 9,720 13,100 28,300 64,300
9 62,100 53,700 44,400 40,200 28,200 24,100 10,500 8,700 10,000 13,400 28,300 63,100
10 63,200 52,900 44,900 40,500 27,600 23,300 10,400 8,540 10,000 13,700 28,900 62,500
11 65,800 49,400 45,400 40,800 27,400 22,500 10,200 8,450 10,200 14,100 29,900 62,600
12 66,500 47,000 45,400 41,000 27,400 21,400 10,000 8,530 10,500 14,100 30,300 62,300
13 69,100 46,700 45,800 40,200 27,000 20,300 9,780 8,590 10,600 14,200 31,400 63,000
14 71,100 46,800 46,100 40,400 26,000 19,800 9,740 8,480 10,600 14,500 32,700 65,100
15 71,500 47,700 47,200 39,800 26,300 19,000 9,710 8,340 10,800 14,500 34,300 65,500
16 72,700 48,800 48,400 38,600 26,100 18,300 9,570 8,490 10,800 14,400 35,900 66,600
17 73,400 51,300 48,200 37,700 26,600 17,800 9,490 8,580 11,000 14,700 36,800 67,300
18 73,800 53,500 47,300 36,500 27,300 17,200 9,440 8,610 11,300 15,000 38,200 66,500
19 74,300 55,900 46,100 35,700 27,600 16,700 9,430 8,540 11,700 15,400 39,400 64,800
20 72,700 57,100 44,800 34,000 27,800 16,100 9,380 8,630 11,900 16,200 41,900 63,500
21 69,600 57,300 43,500 33,300 27,200 15,800 9,210 8,690 11,800 16,600 44,700 64,400
22 66,500 56,300 42,500 33,000 26,800 15,500 9,210 8,680 11,800 17,500 47,500 65,200
23 64,700 55,200 42,600 32,600 26,100 14,900 9,110 8,780 11,700 18,100 49,700 64,600
24 63,700 54,200 43,300 32,800 25,600 14,500 8,970 8,720 11,900 17,900 51,400 63,200
25 64,100 53,500 43,700 34,000 25,000 13,900 8,940 8,840 11,800 17,600 53,400 62,500
26 63,300 51,600 42,800 34,700 24,500 13,800 8,700 8,930 11,900 18,500 56,000 61,100
27 61,600 50,100 42,100 34,600 24,300 13,300 8,860 9,020 11,900 18,900 56,700 61,200
28 60,200 48,600 42,100 34,500 24,100 13,200 8,600 8,970 12,100 19,300 57,700 63,400
29 59,700 46,700 42,400 33,000 23,700 13,000 8,610 8,940 12,200 20,400 56,900 65,500
30 59,200   43,600 31,800 23,600 12,800 8,730 8,920 12,800 21,200 55,800 68,800
31 58,000   44,300   23,300   8,640 8,790   22,100   69,400