River Cain

Not to be confused with Caín River.

The River Cain (Welsh: Afon Cain) is a river in north Powys which flows into the River Vyrnwy.

River Cain
Llanfechain Bridge over Afon Cain
Location of the mouth within Powys
Native name	Afon Cain (Welsh)
Location
Country	Wales
Counties	Powys
Physical characteristics
Source	Confluence of Nant Alan and Nant Fyllon
• coordinates	52.7706°N 3.2837°W / 52.7706; -3.2837
Mouth
• location	River Vyrnwy
• coordinates	52.774°N 3.147°W / 52.774; -3.147
Length	16 km (9.9 mi)
Basin features
Tributaries
• left	Nant Fyllon, River Abel, Nant Llys
• right	Nant Alan, The Brogan

Cain's source is just west of Llanfyllin, at the confluence of the Nant Alan and Nant Fyllon.^[1]

After flowing east through Llanfyllin, where it is joined by the small River Abel, it continues eastwards alongside the A490 highway. It then turns north-east to pass through Llanfechain and is joined by the Nant Llys before finally flowing east again.^[2] It is fed by the Brogan,^[3] before joining the Vyrnwy near Llansantffraid-ym-Mechain.^[4]

The Cain is 16 km long.^[5]

• 
  Afon Cain south of Llanfechain
• 
  Afon Cain between Llanfyllin and Llanfechain