The Adeban River (pronounced AH-deh-BAHN) is a major river that runs through the Tirionite colony of Argengrast. Though the main source of the river is located in the Sagaritian Uplands, tributaries of the Adeban converge before the river eventually flows out into the Chaska Sea.
As an agricultural colony, Argengrast is heavily reliant on the Adeban. The river's waters have been diverted as irrigation into the fields that now line its banks.