Nant y Derwydd

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Nant y Derwydd flows into Afon Alwen , which it joins at N 53° 1′ 39″, W 3° 29′ 6″ at OSM node n7633306701, and there 62 km of total upstream flows in. load it's distributaries

Nant y Derwydd has 1 tributaries.

• (unnamed) , which joins it at the following points: 3 km of total upstream flows in at N 53° 2′ 36″, W 3° 29′ 6″ at OSM node n7633305446 685 m of total upstream flows in at N 53° 2′ 36″, W 3° 29′ 6″ at OSM node n7633305446
load it's tributaries