Afon Twymyn

Geobox|River
name = River Twymyn
native_name = Afon Twymyn
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image_caption = River Twymyn at Cringoed, looking downstream
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country = Wales | country_

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region = Powys
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source_name = Dylife
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mouth_location = River Dyfi, Cemmaes Road
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The River Twymyn ("Afon Twymyn" in Welsh) is a river in Powys, Mid Wales.

Source

The River Twymyn flows from the 130 feet (40 m.) high Ffrwd Fawr Waterfall at the head of the Pennant Valley near Dylife, through Llanbrynmair and joins the River Dyfi upstream of Cemmaes Road