Afon Dulas


The Afon Dulas is a river forming the border between Merionethshire/Gwynedd and Montgomeryshire/Powys in Wales.

Route

It rises from a source in the hills above Aberllefenni and passes through Corris, Esgairgeiliog and Pantperthog before joining the Afon Dyfi at Ffridd Gate near Machynlleth.

History

The Dulas is recorded as an important land boundary in 1200, in a document written in 1428. This document describes the land owned by Einion ap Seisyllt, in the time of Llywelyn the Great, as "tota terra inter aquas de Dyfi et Delwas".

Roads and Railways in the Dulas valley

Another river also called the Afon Dulas joins the Dyfi from the south, upstream of its confluence with the North Dulas. Locally this is referred to as the South Dulas. It rises in Glaslyn, below the slopes of Foel Fadian, and passes the hamlet of Forge and Plas Dolguog before joining the Dyfi.