Mapas topográficos Polk County

The Willamette River drains a region of 11,478 square miles (29,730 km2), which is 12 percent of the total area of Oregon. Bounded by the Coast Range to the west and the Cascade Range to the east, the river basin is about 180 miles (290 km) long and 100 miles (160 km) wide. Elevations within the watershed…

Altitud media: 72 m

Altitud media: 367 m

Altitud media: 64 m