Adria (Greek: Ἀδρίας) was a former channel of the Po river delta, passing by the town of Adria, that ceased in the 1st century BC.
This river was mentioned by Hecataeus,[1] by Theopompus[2] and by Ptolemy.[a]
Hecataeus asserts that the Adriatic sea and the town of Adria were named after this river.[3]
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