The River Manetherendrelle is one of the primary waterways of the Westlands. Together with its major tributary, the Arinelle, this river dominates much of the central-western region of the continent and keeps those lands fertile.
The Manetherendrelle itself rises in the Mountains of Mist at the extreme south-western tip of the Two Rivers district of Andor. Its initial course along the southern border of the Two Rivers is marked by rapids, which cause the water to foam and gives the river its local name of the White River.
The Tarendrelle joins the Manetherendrelle further east before it is also joined by the Arinelle some distance south of Whitebridge. The river then turns south and flows for several hundred miles through Altara, along the border of Murandy and through Illian before meeting the Sea of Storms at the City of Illian.