The Camddwr is a significant right-bank tributary of the River Towy in the eastern part of Ceredigion

Ceredigion

Ceredigion is a county and former kingdom in mid-west Wales. As Cardiganshire , it was created in 1282, and was reconstituted as a county under that name in 1996, reverting to Ceredigion a day later...

, mid Wales

Wales

Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

. It rises on the undulating plateau east of Garn Gron and flows in a generally south-southeasterly direction into Llyn Brianne

Llyn Brianne

Llyn Brianne is a man-made lake or reservoir in the headwaters of the River Tywi in central Wales.-Construction:The reservoir was constructed by Wimpey Construction in the late 1960s and early 1970s in order to regulate the flow in the River Tywi to support large potable water abstraction at...

, a reservoir

Reservoir

A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

 formed by the damming of the upper Towy A chapel

Chapel

A chapel is a building used by Christians as a place of fellowship and worship. It may be part of a larger structure or complex, such as a church, college, hospital, palace, prison or funeral home, located on board a military or commercial ship, or it may be an entirely free-standing building,...

 at Soar y mynydd

Soar y mynydd

Soar-y-mynydd is a Calvinist Methodist chapel and perhaps the most remote chapel in Wales. It was the subject of a painting by Ogwyn Davies in 1993- Location :It stands near the banks of the river Camddwr on the road from Tregaron to Llyn Brianne....

beside the river is often mentioned as being the most isolated in Wales.