navigable

Ben Cottam is the director of the Canal and River Trust for Wales which looks after navigable canals and waterways.

They have sections of challenging rapids, but are usually only navigable for two or three months in early summer, according to Briancon's official website.

Some are navigable, as we saw in “Six Feet Under.”

The court ruled that the law’s protections for the “waters of the United States” apply only to wetlands and streams that are directly connected to navigable waterways.

Year after year, Caltrans moves mountains to keep that two-lane road navigable.