GROUNDWATER

It’s water under the ground absorbed from rainfall.

Filtration: when it rains, water filters through the soil and goes underground.

Aquifers: water collected in underground basins (lakes)

A well: it’s a hole that extracts water from aquifers.

Spring: water that comes to the surface and turns into rivers.

Watershed: body of water that a river finally flows into.

Duero, Tagus, Guadiana and Guadalquivir flows into the Atlantic Ocean.

Ebro flows into the Mediterranean Sea.