The
River Elwy (
Afon Elwy in
Welsh) is a
river in
Wales and is a
tributary of the
River Clwyd. The source of the river is sometimes said to be on the northern flank of
Moel Seisiog, south-east of
Llanrwst, at
Ordnance Survey grid reference SH853593. However the river is only actually called the Elwy at the village of
Llangernyw, where three rivers, Afon Cledwen, Afon Collen and Afon Gallen, meet to form the Elwy. It flows eastwards through
Llanfair Talhaiarn and a few miles downstream from this village it is joined by a tributary, the
River Aled (
Afon Aled) which has its source in
Llyn Aled.