Lake Copais

Lake Copais, Kopais, or Kopaida (Ancient Greek: Κωπαΐς; Modern Greek: Κωπαΐδα) is a former lake in the centre of Boeotia, Greece, west of Thebes. It was drained in the late 19th century. The area where it was located, though now a plain, is still known as Kopaida.

Drainage

When the lake existed, the towns of Aliartos (ancient Haliartus), Orchomenus, and Chaeronea were on its shores. Rivers feeding the lake included the Cephissus, Termessus and Triton. The lake was (and is) surrounded by fertile land, but the lake increasingly encroached on the surrounding land because of inadequate drainage. In response to this, in 1867–87 Scots and French engineers reclaimed the land for the British Lake Copais Company, by building channels to drain water from the lake to the Cephissus and from there to Lake Yliki (Ylíki Limní, ancient Hylica). In total about 200 square kilometres (77 sq mi) were reclaimed. This land was returned to the Greek government in 1952.

The Kopais Lake Agency was created in 1957 to supervise the draining of the lake and building of a new road. The task was completed that same year, but the agency with full-time staff of 30 (including a driver for the president of the agency) still existed until 2010.