The Edessa Waterfalls or Edessis Waterfalls are located in Edessa city in Macedonia, Greece. The falls are a natural phenomenon that arose after a strong earthquake that struck the surrounding area in the 14th century. Since then, many changes have taken place in their morphology due to earthquakes of smaller scale. The main source of these waterfalls is the wetland of Agra-Nissiou, from which flows the main river, Edessaios. Edessaios branches are the waterfalls.