Dulas is a left-bank tributary of the

Afon Irfon Afon Irfon (the River Irfon) is a river in Powys, Wales. It flows from the upper slopes of Bryn Garw in the Cambrian Mountains, through the Abergwesyn Valley, past the Nant Irfon National Nature Reserve in the hills above the village of Abergwesy ...

, itself a tributary of the River Wye. It rises on the southeastern slopes of the

Elenydd Elenydd () is an upland area of Mid Wales, extending across parts of northern and eastern Ceredigion and Powys between Aberystwyth and Rhayader. Elenydd is also a name given to the medieval commote of Cwmwd Deuddwr which covered approximately ...

and runs southeast to join the Irfon at

Garth Garth may refer to: Places * Garth, Alberta, Canada * Garth, Bridgend, a village in south Wales :* Garth railway station (Bridgend) * Garth, Ceredigion, small village in Wales * Garth, Powys, a village in mid Wales :* Garth railway station (Powy ...

. The river is bridged by both the B4358 and the

A483 The A483, officially described as the Swansea to Manchester Trunk Road, although now ending in Chester, is a major road in the United Kingdom. It runs from Swansea in Wales to Chester in England via Llandovery, Llandrindod Wells, Oswestry and W ...

roads.Ordnance Survey 1:50,000 scale Landranger map sheet 147 ''Elan Valley & Builth Wells area''

References

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