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Willamette River

Washington • 45.6046, -122.7828
Hydrography profile Updated Dec 30, 2025
Checking mapped path coverage…
USGS and NOAA data is for informational purposes. Source notes
Length
0 mi
0 km
Elevation
6′ → 6′
0 ft drop
Stream Order
9
Major River
Slope
0.00%
0.0 ft/mi
Drainage
11,001 mi²
28,493 km²
Avg Flow
-- cfs
3.0 mph velocity
Path to Mouth
99 mi
159 km to ocean
Classification
Tributary
Mid-reach
Elevation Profile
Water Quality

Data from EPA Water Quality Portal (USGS, EPA, state agencies).

EPA WQP MyWaterway
Data from USGS & NOAA for informational purposes only. More
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Access Sites on Willamette River

There are 35 boat ramps, launches, and public access points on Willamette River.