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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 -> 2024-09-30)

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 67,700 56,900 46,900 42,900 30,700 22,900 12,500 8,610 8,810 13,100 23,100 54,500
2 66,000 56,000 47,100 41,700 30,000 23,000 12,200 8,520 8,920 13,000 24,800 57,000
3 64,300 54,200 46,300 40,800 29,500 23,100 12,000 8,460 8,990 12,900 25,100 61,100
4 63,600 51,200 45,600 40,100 29,900 23,000 12,000 8,330 9,310 12,900 24,300 65,100
5 63,200 47,800 45,400 39,400 30,100 23,100 11,800 8,540 9,400 13,000 24,600 64,900
6 64,100 46,600 45,900 38,500 30,100 23,200 11,400 8,520 9,590 13,000 25,600 62,800
7 64,500 48,000 45,500 39,300 30,200 24,400 10,900 8,480 9,470 13,200 27,500 62,300
8 64,100 50,400 44,600 39,600 30,000 24,700 10,700 8,750 9,570 13,000 28,800 61,700
9 64,500 52,100 43,600 39,900 29,600 24,000 10,500 8,590 9,920 13,300 28,500 60,600
10 65,000 51,200 44,000 40,200 28,900 23,200 10,400 8,400 9,920 13,500 28,800 60,200
11 66,600 47,900 44,400 41,100 28,500 22,800 10,100 8,340 10,100 13,900 29,600 60,500
12 67,100 45,600 44,400 41,500 28,100 22,000 9,970 8,430 10,300 14,000 30,500 60,700
13 70,500 45,400 44,800 40,700 27,600 21,300 9,770 8,490 10,300 14,100 32,000 61,700
14 72,400 45,900 45,500 40,700 26,600 20,800 9,720 8,350 10,400 14,400 33,100 63,800
15 72,700 47,100 46,500 39,800 27,300 20,000 9,700 8,280 10,500 14,500 34,400 64,100
16 73,300 48,400 47,800 38,500 27,300 19,100 9,520 8,340 10,600 14,300 35,800 65,000
17 73,500 50,800 47,500 37,500 27,600 18,400 9,410 8,450 10,700 14,500 36,500 65,600
18 73,400 52,600 46,400 36,200 27,900 17,600 9,300 8,520 11,100 14,800 37,600 64,900
19 73,600 54,700 45,200 35,500 28,000 17,000 9,340 8,450 11,500 15,200 38,800 63,600
20 71,800 55,900 43,900 34,000 28,100 16,300 9,330 8,520 11,600 15,900 41,200 63,600
21 68,800 56,200 42,700 33,500 27,400 16,100 9,140 8,600 11,600 16,300 43,600 65,800
22 65,600 55,200 41,800 33,500 26,800 15,700 9,100 8,610 11,600 17,100 46,000 67,000
23 63,600 54,200 41,900 33,200 26,100 15,000 8,950 8,590 11,500 17,700 48,000 66,400
24 62,400 53,200 42,500 33,300 25,500 14,600 8,820 8,530 11,700 17,700 49,500 64,700
25 62,500 52,300 43,000 34,500 24,800 14,100 8,810 8,650 11,600 17,500 51,200 63,800
26 61,600 50,200 42,100 35,000 24,400 13,900 8,570 8,780 11,700 18,300 53,600 62,300
27 59,900 48,800 41,400 34,800 24,100 13,500 8,780 8,890 11,800 18,800 54,200 62,800
28 58,400 47,600 41,300 34,600 23,900 13,400 8,530 8,830 11,900 19,200 55,200 65,100
29 57,900 46,700 41,600 33,200 23,600 13,200 8,560 8,770 12,100 20,100 54,500 66,800
30 57,300   42,800 32,000 23,500 13,000 8,670 8,840 12,600 20,900 53,600 69,600
31 56,100   43,300   23,300   8,590 8,670   21,700   70,000