Lower Potamus, Potamus Hypenerthen or Potamos Hypenerthen (Ancient Greek: Ποταμός ὑπένερθεν), was a deme of ancient Attica. It lay on the east coast north of Thoricus, and was once a populous place: it was celebrated as containing the sepulchre of Ion.[1][2][3][4]
Lower Potamus is tentatively located at Panepistemioupolis.[5][6]
This article incorporates text from a publication now in the public domain: Smith, William, ed. (1854–1857). "Attica". Dictionary of Greek and Roman Geography. London: John Murray.
37°58′19″N 23°47′02″E / 37.9719°N 23.784°E / 37.9719; 23.784