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Hammond Guide Service

Willamette River near Portland, OR

River29.3 mi

Around here

Around Willamette River

Fort Vancouver National Historic Site6.1 miFort Vancouver Visitor Center6.3 mi5 mi

Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US

About this river

Willamette River is a 29.3 mile river near Hammond Guide Service in Oregon. Streamflow is measured at the USGS gauge Willamette River at Portland, OR (site 14211720). The National Hydrography Dataset places it at stream order 9. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

1973 to 2026

Willamette River typically runs highest in January, at a median 56,000 cfs, and lowest in August, at 8,200 cfs. The highest flow on record for any single day is 420,000 cfs, in 1996.

Show the numbers
Typical flow by month at Willamette River at Portland, OR, in cfs
MonthTypical (cfs)Usual range (cfs)
January56,00032,600 to 88,200
February40,80023,800 to 64,400
March37,00026,000 to 58,200
April32,00024,000 to 44,350
May24,40018,000 to 34,000
June16,00012,400 to 22,100
July9,0007,870 to 10,800
August8,2007,500 to 9,440
September9,9958,660 to 11,900
October13,20011,000 to 16,100
November27,70018,200 to 42,900
December53,90027,500 to 93,300

Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 53 years of record. Statistics published by the US Geological Survey for Willamette River at Portland, OR (site 14211720). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

Boat access nearby

8 mapped launches sit in the mapped area of Willamette River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.

  • Canby Community ParkMolalla RiverPublic
  • Knights BridgeMolalla RiverPublic
  • Rogers Landing County ParkWillamette RiverPublic
  • Boones Ferry MarinaWillamette RiverPublic
  • Molalla River State ParkWillamette RiverPublic
  • Hebb ParkWillamette RiverPublic
  • Bernert LandingWillamette RiverPublic
  • Meldrum Bar ParkWillamette RiverPublic
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