Haliacmon basin

The Haliacmon (, Aliákmonas; formerly: , Aliákmon or Haliákmōn) is the longest river of Greece, flowing entirely on Greek soil in the region of Macedonia, with a total length of . In Greece there are three rivers longer than Haliacmon: Evros (), Strymonas (Greek: Στρυμόνας), both coming from Bulgaria, and Axios () coming from North Macedonia, but the length of each one of them in Greek territory is less than that of Haliacmon, which flows entirely in Greece. Haliacmon is the traditional English name for the river, but many sources cite the formerly official Katharevousa version of the name, Al

The Moglenitsas () is a river in Almopia, northern Greece. The river has its headwater in the Vermio Mountains of Macedonia, Greece and it flows into the Aliakmonas River near Kouloura, between Veria and Alexandreia, twenty kilometers west of Thessaloniki.