Since 1998, a new wetland was formed on the plateau of Pheneos, behind the irrigation dam of the torrent bearing the same name. The plateau of Pheneos is a large triangular flat plateau surrounded by forested slopes.

It borders with the prefecture of Achaia to the west and the prefecture of Arcadia to the south. It is the last plateau of the prefecture of Corinthia to the southwest. It is an endless colorful mosaic. The prefecture of Corinthia obtained an open air artificial hydrologic park, surrounded by magnificent landscapes and natural forest ecosystems of special ecological interest. These forests have been included in the Natura 2000 Chelmos project.