Aposelemis Dam (Greek: Φράγμα Αποσελέμη) is an earthen embankment dam on the near the villages of Potamies and Avdou, 32 kilometres (20 mi) southeast of Heraklion, Greece. The dam is the largest water management project in Crete. It creates Aposelemis lake, a reservoir that serves as the primary fresh water supply for the cities of Heraklion and Agios Nikolaos plus 6 smaller municipalities and 19 communities along the touristically developed north coast of Crete with a combined population of 300,000 inhabitants.