yes, the Columbia River is considered a waterway
The Columbia River, The Sacramento River, The Snake River, The Mississippi River, The Hudson River and the Missouri. There are smaller rivers which are navigable but ships can't go in them.
The majority of the Columbia river is considered freshwater, which makes it < 500ppm of dissolved salts.
The first major waterway would be the Columbia River that forms two/thirds of Oregon's northern border with Washington. Its headwaters start in Canada and it flows south and west then empties into the Pacific Ocean just west of Astoria, Oregon. The second major waterway would be the Willamette River with its headwaters south of Eugene, Oregon, it flows north and empties into the Columbia River just north of Portland, Oregon.
A tributary is a small waterway that flows into a river.
The Amazon River is the chief waterway of South America.
The deepest part of a river or waterway channel is called the THALWEG. It is an imaginary line that connects the deepest parts of the river or waterway channel.
Rhine river
the longest waterway in Canada is the St. Lawrence river
Potomac River
Yes
The correct answer is the Rhine River
Three example names for a waterway: stream, river, canal.