Afon Dwyfor
Afon Dwyfach
Afon Erch
Afon Soch
Afon Rhyd-hir
Afon Penrhos

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Afon Dwyfor

Dwyfor: dwy - two; for from môr - sea. The district of Dwyfor, which covers the Llŷn Peninsula and a slice of western-central Snowdonia is named after this river.

The Afon Dwyfor rises in the western mountains of Snowdonia and flows down through Cwm Pennant towards the lower land of the peninsula. Cwm Dwyfor, where the source of the river is, lies between Moel Hebog and the Nantlle Ridge.

From here the river flows down through Llanfihangel-y-Pennant, then past Dolbenmaen, and down through woodlands to Llanystumdwy. On the banks of the river at Llanystumdwy is buried the former Prime Minister David Lloyd George who grew up in the village.

Just below Llanystumdwy the Dwyfor merges with the Dwyfach and from here enters the joint estuary. The tide can flow around a mile and a half upstream and by the time the river meets the beach, the channel is quite deep. This has been used in the past by ships, but isn't today and the rocks and bars that show at low tide give a good idea as to why.