Upper Potamus

Upper Potamus, or Potamus Kathyperthen or Potamos Kathyperthen (Ancient Greek: Ποταμός καθύπερθεν), was a deme of ancient Athens. 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]

Upper Potamus is tentatively located at Kaisariani monastery.[5][6]
References

Strabo. Geographica. ix. pp, 398, 399. Page numbers refer to those of Isaac Casaubon's edition.
Pausanias. Description of Greece. 1.31.2. , 7.1.2.
Pliny. Naturalis Historia. 4.7.11.
Suda, s.v. Ποταμός; Harpocr., s.v. Ποταμός
Lund University. Digital Atlas of the Roman Empire.

Richard Talbert, ed. (2000). Barrington Atlas of the Greek and Roman World. Princeton University Press. p. 59, and directory notes accompanying.

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.