In the winter, the southern part of the basin often gets flooded, and a lake forms from a large amount of fresh rainwater because of insufficient surface drainage.
The large pond was built around 2000 with the support of an EU-fund, to retain water for irrigation in the dry season.
In almost the whole Peloponnese region, intense tectonics[1] shattered the limestone- and similar carbonate formations of Arcadia over time.
In rainy winters, as 2003, access water floods the ground around the dam, as this is the lowest section of the Tripoli-Plateau.
Exploratory excavations at the lake found traces of the ancient city of Manthirea, which derives from the old name of the area "Manthuriko Plain".