Groundwater.
artesian
artesian
artesian
Ground water.
artesian
artesian
artesian
artesian
artesian
Most of the earths surface is covered with water. There is land under that water though, below the surface.
This process is called water table rise, which occurs when heavy rainfall saturates the ground with water, causing the water table to rise. Excessive water accumulation can lead to flooding and potential water damage to properties on the surface.
Runoff is the water flowing downhill across the surface of the Earth.