It is about long, with a drainage basin in area.
Over a half million people live in its drainage basin.
Its drainage basin has an area of 1,670 km2, and is populated by around 4 million people.
The Sound is also a drainage basin for three major rivers.
The lake's drainage basin has an area of about 1,120 km2.
Most of the land in the river's drainage basin is commercial forest.
The drainage basin of the river is also fairly large.
The river is 110.1 km long and has a drainage basin of 2,853 km2.
Their combined drainage basin is home to some 600 million people.
In 2000, about six million people lived within the Columbia's drainage basin.