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Another is a stream draining the south-eastern slopes of Drum and Foel-fras, mountains in the Carneddau mountain range. It is a tributary of Afon Dulyn, itself is a tributary of the river Conwy.
A third is a stream flowing north-west from Bwlch y Ddeufaen. It is a tributary of the Afon Llanfairfechan, joining it immediately above the village of Llanfairfechan.