The river picks up sediment and carries it downstream in different ways.

Erosion is the process that wears away the river bed and banks. Erosion also breaks up the rocks that are carried by the river. Landslides are occasional, rapid movements of a mass of earth or rock ...

In Oregon, life is anchored to the state’s vast network of rivers. These once-polluted and dammed waterways now flow healthy ...

The continental collisions that created this narrow Mideast waterway endowed the region with its petrochemical riches—and ...