River WA

Lewis River

Washington • 45.9146, -122.6756

Length

90 mi

145 km

Elevation

7,121′ → 7′

7,114 ft drop

Stream Order

8

Major River

Slope

1.49%

78.7 ft/mi

Drainage

1,049 mi²

2,718 km²

Avg Flow

6,407 cfs

3.1 mph velocity

Path to Mouth

85 mi

136 km to ocean

Classification

Headwater

Source Stream

Elevation Profile

Data from USGS & NOAA for informational purposes only. More

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