Runoff

Definition

Runoff refers to the movement of water, such as rainwater or melted snow, over the land surface and into bodies of water. It occurs when the ground is unable to absorb all the water, leading to excess water flowing over the surface.

Related terms

Erosion: Erosion is the process by which soil and rock particles are worn away and transported by wind, water, or ice.

Watershed: A watershed is an area of land where all precipitation drains into a common outlet such as a river or lake.

Surface Water: Surface water refers to any body of water found on Earth's surface, including rivers, lakes, ponds, and oceans.