Hydrology

Greece has rich water resources, both surface and underground, whose extent and characteristics are directly affected by the geological structure, the geomorphology as well as the rain height in each location.

Surface waters are divided into rivers, lakes, transitional and coastal waters. Extensive underground aquifers are grown in flat ereas (alluvial fields) as well as in mountainous carboniferous volumes (limestones, marbles).

All natural underground water transport passages, such as caves, karstic conduits, chasms, poljes, sinkholes, e.t.c., should be included in Greece's water bodies which have been created due to the long-lasting dissolving and corrosive process of water on the carbonate rocks that are scattered all over the country.