The origins of a tributary are called its source. This is the place where the water begins its journey towards the ocean or sea. The source is usually on high ground, and the water may come from a variety of places, such as lakes, melting ice, and underwater springs.

Where do tributaries get their water?

When two rivers meet they will join together and form a single bigger river. Before a big river reaches the sea, it will be joined by lots and lots of smaller rivers. We call these rivers its tributaries. Most of the water we drink is taken out of rivers as they pass through our towns.

Where do all rivers begin what are tributaries?

The place where a river begins is called its source. River sources are also called headwaters. Rivers often get their water from many tributaries, or smaller streams, that join together. The tributary that started the farthest distance from the river's end would be considered the source, or headwaters.