The Haliacmon (Haliakmon) was a river of ancient Macedon, rising in the chain of mountains to which Ptolemy gave the name of Kanalovii. According to Julius Ceasar, the Haliacmon formed the line of demarcation between Macedon and Thessaly.
In the upper part of its course it took a southeast direction though Elymiotis , which it watered; and then, continuing to the northeast, formed the boundary between Pieria, Eordaea , and Imathia, till it discharged itself into the Thermaic Gulf. In the time of Herodotus the Haliacmon was apparently joined by the Lydias , or discharge of the lake of Pella; but a change has taken place in the course of the Lydias, which now joins not the Haliacmon, but the Axios.
It is now known as the Aliákmon, in Greece.
See also: Aliakmon.
