Marathon Dam

Lake Marathon or the Marathon Reservoir (Greek: Λίμνη Μαραθώνος [Limni Marathónos] or Λίμνη Μαραθώνα [Limni Marathóna]) is a man-made water supply reservoir formed from the construction of Marathon Dam at the junction of Charadros and Varnavas Torrents near the town of Marathon, Greece. It was the primary water supply for Athens from 1931, when it became operational, until 1959. In 1959 water from Lake Yliki became available, and water from Mornos Reservoir became available in 1981. The area of the lake at the height of the spillway of the dam is 2.45 square kilometres, the maximum depth is 54 m, the lake concentrates water from a drainage basin of 118 square kilometres with an average runoff of 14,400,000 m³ per year in an average rainfall of 580 mm per year, the average inbound volume is 12,000,000 m³ per year and the maximum reservoir capacity is 41,000,000 m³ (effective volume 34,000,000 m³). The dam has a maximum height (from foundation to crest) of 54 m, a maximum width of 28 m at the base and 4.5 m at the crest. Its length is 285 m. The crest is 227 m above sea level, the toe is 173 m above sea level, and the spillway is 223 m above sea level. The spillway disgorges 520 m³/s. The dam is constructed from concrete and is a gravity dam. It is unique worldwide because its external cladding of white pentelikon marble is the same marble used in construction of the Parthenon and the other buildings in the Acropolis. The dam was constructed by the American firm ULEN (which had, in a BOT type contract, the ownership of the water supply company of Athens until 1974). It was constructed to meet the increased water demand caused by the rapid population increase in the Athens area following the huge influx of refugees from Asia Minor during and after the end of Greco-Turkish War (1919–1922). The construction lasted from 1926 to 1929.

Semachidae or Semachidai (Ancient Greek: Σημαχίδαι) was a deme of ancient Athens, in the district of Epacria.The site of Semachidae is tentatively located near modern Vredou.

Anacaea or Anakaia (Ancient Greek: Ἀνακαία) was a deme of ancient Attica, of the phyle of Hippothontis, sending three delegates to the Athenian Boule.Its site is tentatively located near modern Mygdaleza.

Hecale or Hekale (Ancient Greek: Ἑκάλη) was a deme of ancient Attica. It was probably near Marathon, since it is said to have obtained its name from a woman, Hecale, who hospitably received Theseus into her house, when he had set out to attack the Marathonian Bull, which was ravaging the Tetrapolis. It contained a sanctuary of Zeus Hecaleius.The site of Hecale is tentatively located near modern Koukounarti.

Colonae or Kolonai (Ancient Greek: Κολωναί) was a deme in ancient Attica, originally of the phyle of Antiochis, but later in the phylae of Antigonis (307/6 – 224/3 BCE) and Ptolemais (after 224/3 BCE). Its site is tentatively located near modern Varnava Tower.

Colonae or Kolonai (Ancient Greek: Κολωναί) was a deme in ancient Attica of the phyle of Leontis, sending two delegates to the Athenian Boule..Its site is tentatively located near modern Michaleza.

Oeum Deceleicum or Oion Dekeleikon (Ancient Greek: Οἶον Δεκελεικόν) was a deme of ancient Attica near Deceleia, so called to distinguish it from the Oeum Cerameicum.The site of Oeum Deceleicum is located near modern Bogiati.

Plotheia (Ancient Greek: Πλώθεια) was a deme of ancient Attica and appears to have belonged to the district of Epacria, and to have been not far from Halae Araphenides. It was noted for its festival celebrating the hero Pandion.Its site is located south of modern Stamata.

Varnavas (Greek: Βαρνάβας "Barnabas") is a town in East Attica, Greece. Since the 2011 local government reform it is part of the municipality Marathon, of which it is a municipal unit. It is part of Athens metropolitan area. On 11 Aug 2024, a large wildfire in Varnavas caused smoke over Athens.

Anoixi (Greek: Άνοιξη, meaning "spring") is a suburb of Athens in East Attica, Greece. Since the 2011 local government reform it is part of the municipality Dionysos, of which it is a municipal unit. The municipal unit has an area of 4.582 km2.

Agios Stefanos railway station (Greek: Σιδηροδρομικός Σταθμός Αγίου Στεφάνου, romanized: Sidirodromikós Stathmós Agíou Stefánou) is a station on the Piraeus–Platy railway line in the northern part of the Athens metropolitan area, in the municipal unit of Agios Stefanos of the municipality of Dionysos, East Attica, Greece. It was inaugurated on 8 March 1904 and reopened on 6 May 2005. It is owned by OSE, but service are provided by Hellenic Train, through the Athens Suburban Railway from Athens to Chalcis. The station was the setting for 1954 Greek film Neither Cat nor Damage, starring Vasilis Logothetidis.

The Archeological Museum of Marathon is a museum in Marathon, Attica, Greece. The museum mainly houses findings originating from the Battle of Marathon and from the Egyptian temple built nearby.