Question

Located in the opposite direction than

where a stream or river flows; nearer to
the source

Answer 1

What is the name of stream at the source of the river?

A tributary is a freshwater stream that feeds into a larger stream or river. The larger, or parent, river is called the mainstem. The point where a tributary meets the mainstem is called the confluence. Tributaries, also called affluents, do not flow directly into the ocean.