Haliacmon

With a total length of 297 kilometers, the Haliacmon is one of the Greece's longest river (185 mi). There are three rivers in Greece that are longer than Haliakmon: Maritsa, Struma (Strymónas), and Vardar, all of which originate in Bulgaria, but their length in Greek territory is smaller than Haliakmon's, which flows wholly through Greece. The old English name for the river is Haliacmon, while many sources use Aliákmon, the formerly official Katharevousa name. The demotic Aliákmonas is the only official variant nowadays. It runs through West Macedonia (Kastoria, Grevena, and Kozani regional units) and Central Macedonia (Kastoria, Grevena, and Kozani regional units) (Imathia and Pieria regional units). It has an 8,813-square-kilometer drainage basin (3,403 sq mi). Haliakmon's tributaries include Gramos, Ladopotamos, Pramoritsa, Grevenitikos, Venetikos and Tripotamos.

Aliakmonas or Aliakmon is another name for the river. Carp, eel, tuna, salmon, brown trout, Mediterranean sand smelt, dogfish, and school shark are among the aqua fauna found in the river. The river's basin is a popular birding destination for purple herons, curlews, and pelicans. Historically, the river has served as a natural barrier against northern incursions.

Length: 297 km (185 mi)