Parts Of A River

By V. Hernandez-Gonzalez


A watershed is an area or region of water that drains into a river which then flows to a larger body of water. In the U.S, there are a total of 18 regions of watersheds that our drinking and bathing water come from.

the great basin

The Great Basin, the largest bordering endorheic basin (a closed basin whom's water does not flow to a larger body of water e.g lake or ocean) in the U.S.

The Source

The source of a river is the beginning of the river or stream which can be lake, marsh, spring, or glacier.

The Mouth A.K.A Delta

A river's mouth is the point that then flows into a large body of water. The mouth, or delta, of a river is an area formed from the deposition of sediments at the mouth of the river.


A water divide is the separation of two neighboring watersheds.


In this area of the river, sunlight can not be accessed because of the tall trees, thus making plant life scarce. Even though the river may be strong and fierce, this part is very calm.


The downriver is in between the headwaters and floodplain.


The tributary of a river is another river flowing into the first river.


A river's confluence is the place where a tributary meets with a larger body of water such as a river or stream.


Floodplains form beside rivers. As the rivers move back and forth across the land, they form an area around the river where the elevation of the land is lower than other areas. This lower land is the river's floodplain. This area is prone to flooding.

My data shows that there are 9 main parts of a river, the watershed, source, mouth (A.K.A delta), divide, headwaters, downriver, tributary, confluence, and floodplain that make up a river. I learned that there is basically watersheds all over the country and that one watershed, the Great Basin, is very large and its water does not flow into an ocean, lake, or another river.

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