The Afon Deri (sometimes known as the ''Afon Corris''
) is a
river
A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...
in
Mid Wales
Mid Wales ( or simply ''Y Canolbarth'', meaning "the midlands"), or Central Wales, is a region of Wales, encompassing its midlands, in-between North Wales and South Wales. The Mid Wales Regional Committee of the Senedd covered the unitary autho ...
. It flows from the eastern flank of
Mynydd Ty-Glas down to
Corris
Corris is a village in the county of Gwynedd, Wales, about north of the town of Machynlleth. The village lies on the west bank of the Afon Dulas (which here forms the boundary with Powys), around that river's confluence with the Afon Deri. ...
, where it joins the
Afon Dulas
The Afon Dulas, or North Dulas, is a river forming the border between Merionethshire/Gwynedd and Montgomeryshire/Powys in Wales. Another river called Afon Dulas joins the Dyfi from the south, upstream of its confluence with the North Dulas: loca ...
that flows south to the
Afon Dyfi
The River Dyfi (; ), also known as the River Dovey ( ), is an approximately long river in Wales.
Its large estuary forms the boundary between the counties of Gwynedd and Ceredigion, and its lower reaches have historically been considered the b ...
.
The river passes through the village of
Corris Uchaf and its lower reaches pass through the richest area of
slate quarrying in Mid Wales. The
Braichgoch,
Abercorris and
Abercwmeiddaw quarries are to be found beside the Afon Deri.
References
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Rivers of Gwynedd
Rivers of Snowdonia