The Ambracian Gulf, also known as the Gulf of Arta or the Gulf of Actium, and in some official documents as the Amvrakikos Gulf (Greek: Αμβρακικός κόλπος), is a gulf of the Ionian Sea in northwestern Greece. About 40 km (25 mi) long and 15 km (9 mi) wide, it is one of the largest enclosed gulfs in Greece. The towns of Preveza, Amphilochia (formerly Karvassaras), and Vonitsa lie on its shores.
The entrance to the gulf is through a 700-meter wide channel between Aktio (ancient Actium) on the south and Preveza on the north; a recent road tunnel connects the two. The gulf is quite shallow, and its shore is broken by numerous marshes, large parts of which form an estuary system. The Louros and Arachthos (or Arta) rivers drain into it; for this reason it is warmer and less salty than the Ionian, and a current flows from the gulf into the sea. It is rich in grey mullet, sole, and eel.
The Ambracian Gulf was the site of the Battle of Actium, in which Augustus' forces defeated those of Mark Antony and Cleopatra. From Greek independence (Treaty of Constantinople, 1832) until the Second Balkan War (Treaty of Bucharest, 1913), the Gulf formed part of the border between the Kingdom of Greece and the Ottoman Empire.
Since 2002, the northern and southern sides at the mouth of the gulf are connected by the Aktio-Preveza Undersea Tunnel. The tunnel greatly shortens the travel distance across the gulf, which previously was possible only by ferry.
- James Wolfe, "Observations on the Gulf of Arta, Made in 1830" Journal of the Royal Geographical Society of London 3:77-94 (1833) at JSTOR
- This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press.
- Preveza Weather Station SV6GMQ - Live Weather Conditions (in English and Greek)
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