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USGS Daily Statistics for Oregon

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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 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 -> 2019-09-30)

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 68,300 57,500 47,800 43,900 30,600 23,200 12,400 8,730 9,130 13,400 24,000 57,600
2 66,500 56,600 47,600 42,300 29,800 23,300 12,200 8,660 9,120 13,300 25,900 60,300
3 64,000 54,800 46,700 41,400 29,400 23,600 12,100 8,650 9,170 13,200 26,300 64,800
4 62,500 51,800 46,100 40,700 29,900 23,700 12,100 8,530 9,420 13,300 25,300 68,600
5 61,500 48,500 46,100 39,900 30,200 23,700 11,800 8,770 9,610 13,400 24,800 68,100
6 62,100 47,300 47,000 39,000 30,100 23,800 11,400 8,690 9,870 13,300 25,400 66,700
7 62,100 49,000 46,700 39,800 29,800 24,800 11,000 8,680 9,710 13,500 27,200 66,200
8 61,600 51,600 46,000 40,100 29,200 25,100 10,900 8,900 9,750 13,300 28,600 65,500
9 62,300 53,400 45,000 40,600 28,700 24,400 10,600 8,790 10,100 13,600 28,700 64,200
10 63,500 52,600 45,600 40,800 28,000 23,500 10,500 8,630 10,100 13,800 29,300 63,700
11 66,000 49,200 46,000 38,600 27,900 22,700 10,300 8,510 10,300 14,200 30,300 63,800
12 66,400 46,900 46,100 38,500 27,800 21,600 10,100 8,580 10,600 14,200 30,800 63,400
13 68,800 46,800 46,500 37,700 27,400 20,500 9,890 8,680 10,700 14,300 31,900 64,000
14 70,700 47,000 46,800 38,200 26,400 19,900 9,840 8,620 10,700 14,500 33,200 66,100
15 71,300 48,000 47,800 38,000 26,600 19,100 9,790 8,400 10,900 14,700 34,800 66,500
16 72,700 49,000 49,200 37,100 26,400 18,200 9,650 8,570 10,900 14,500 36,400 67,600
17 73,600 51,600 48,900 36,700 27,000 17,700 9,620 8,680 11,100 14,800 37,400 68,400
18 74,000 53,800 48,000 35,800 27,700 17,100 9,590 8,730 11,300 15,100 38,800 67,600
19 74,600 56,300 46,800 35,200 28,000 16,600 9,550 8,640 11,700 15,400 40,000 66,000
20 73,000 57,700 45,400 33,700 28,200 16,100 9,550 8,680 11,900 16,100 42,600 64,500
21 70,000 58,000 44,200 33,200 27,500 15,900 9,310 8,800 11,800 16,500 45,400 65,100
22 66,800 57,000 43,200 33,000 27,000 15,600 9,280 8,770 11,900 17,500 48,300 65,700
23 64,800 56,000 43,300 32,700 26,300 14,900 9,230 8,860 11,900 18,100 50,600 65,100
24 63,500 54,900 43,900 33,000 25,800 14,500 9,080 8,830 12,000 18,000 52,400 63,800
25 63,500 54,200 44,400 34,300 25,200 14,000 9,110 8,980 11,900 17,700 54,400 63,200
26 62,700 52,300 43,400 35,000 24,700 13,800 8,810 9,090 12,000 18,600 57,100 61,900
27 61,000 50,800 42,700 35,000 24,500 13,400 8,920 9,120 12,000 19,100 57,800 62,000
28 59,300 49,200 42,700 34,900 24,400 13,300 8,680 9,100 12,200 19,600 58,800 64,300
29 58,400 49,400 43,000 33,400 24,000 13,100 8,670 9,020 12,300 20,600 58,000 66,600
30 57,700   44,200 32,100 23,900 12,900 8,770 9,020 12,900 21,400 56,800 69,900
31 56,500   44,600   23,600   8,660 8,900   22,400   70,600