River WA OR

Multnomah Channel

Washington • 45.7310, -122.8227

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

1 mi

1 km

Elevation

8′ → 8′

0 ft drop

Stream Order

Large River

Slope

0.01%

0.4 ft/mi

Drainage

11,118 mi²

28,797 km²

Avg Flow

-- cfs

1.8 mph velocity

Path to Mouth

84 mi

135 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

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

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Data from USGS & NOAA for informational purposes only. Read source and safety notes

Rain Radar