(unnamed)

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(unnamed) flows into Nant y Draethen , which it joins at N 51° 34′ 28″, W 3° 8′ 10″ at OSM node n3220617889, and there 8 km of total upstream flows in. load it's distributaries

(unnamed) has 1 tributaries.

• Cwm Leyshon, which joins it at N 51° 34′ 29″, W 3° 8′ 12″ at OSM node n3228747517, and 378 m of total upstream flows in.
load it's tributaries