USGS - science for a changing world

The USGS Water Science School

Go to a page to view the Kid's Water Cycle diagram Go back to the water cycle diagram.

The Water Cycle for Kids
Runoff: River water entering the ocean

Rainfall hits the land and starts to runoff downhill, usually into rivers (top left of photo). Rivers flow on until they empty into the oceans, often carrying lots of dirt with them, as this satellite picture shows.


Credit: NASA Visible Earth.

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Page Last Modified: Monday, 28-Nov-2016 13:34:19 EST