Nile River - River key words

Front

Drainage basin

Back

An area of land that drains water into a common outlet such as a lake or the ocean.

Front

Confluence

Back

The point at which two or more rivers meet.

Front

Tributary

Back

A small river which joins a larger one.

Front

Watershed

Back

The boundary between two drainage basins.

Front

Mouth

Back

Where the river enters the sea or lake.

Front

Source

Back

The start of a river.

Front

Surface run-off

Back

The movement of water overland back into a river.

Front

Infiltration

Back

The movement of water from the surface into the soil.

Front

Groundwater

Back

Water that soaks into the soil and then the cracks in the rock below, becoming a store of water.

Front

Floodplain

Back

Area of flat, low-lying land either side of a river, usually in the lower course, that can be inundated with water from a river.