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Dam and Lake of Marathon

Dam and Lake of Marathon was an exemplary project for the international standards of the time.

  1. Modern and Contemporary era (1821 - )

    1926 Beginning of construction.

    1929 Completion.

    1931 The latest works were completed.

  2. Ottoman era (1453- 1821)

  3. Byzantine era (331 AC- 1453)

  4. Roman era (30 BC- 330 AC)

  5. Hellenistic era (322- 31 BC)

  6. Classical era (478-323 BC)

  7. Archaic era (800-479 BC)

  8. Geometric era (-1100- 800 BC)

  9. Prehistory (-1100 BC)

What I can see

8 kilometers from the town of Marathon lies the eponymous lake and dam, which was constructed at the junction of the rivers Haradros and Varnavas. The lake gathers 41.000.000 cb.m. of water, is 54m deep, and covers an area of ​​ The dam is 285m long, 54m high, and has a width of 28m. It belongs to the category of gravity dams and has the ability of eliminating 520cb.m. per second. The facade of the dam is covered in Pentelic marble, the same as that of the Parthenon. At the time of its construction, politicians wanted to make a symbolic link between the glamour of classical Athens and the glamour that conferred this important work of modernization in the early decades of the 20th century.

What I can't see

It was built to meet the irrigation needs of Athens. The first attempt to construct the dam (1918) was declared illegal, due to avoidance of competition. After the end of the war with Turkey and the exchange of populations, 1,300,000 refugees came to Greece. Water needs in the capital increased rapidly and construction was accelerated. The project went over budget and for that reason; there was a joint venture between the US company ULEN, the Bank of Athens and the government. At the time of its construction, it was advertised as a huge modernization project of the country. Since the 1960s, water needs have increased due to rapid urbanization, and Athens has also been linked to the Yliki and Mornos lakes. Today the Marathon Lake would meet Athens’ needs for just a few days. The first case of an earthquake (1931) caused by human activity was also recorded here, due to the rapid filling of the reservoir.


  • Address: Marathonos Av.


Οnline Guide of the New City of Marathon (d.u.), Λίμνη Μαραθώνα, [Lake Marathon] in

Last visit 3/11/2019

EYDAP (d.u.), From the Marathon Dam until today, in

Last visit 3/11/2019

Kaika M., (2005), City of flows: Modernity, Nature and the City, Routledge