Afon Seiont ( Welsh, meaning 'River Seiont' in English) is a

river A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...

Gwynedd Gwynedd () is a county in the north-west of Wales. It borders Anglesey across the Menai Strait to the north, Conwy, Denbighshire, and Powys to the east, Ceredigion over the Dyfi estuary to the south, and the Irish Sea to the west. The ci ...

, Wales which runs into the

Menai Strait The Menai Strait () is a strait which separates the island of Anglesey from Gwynedd, on the mainland of Wales. It is situated between Caernarfon Bay in the south-west and Conwy Bay in the north-east, which are both inlets of the Irish Sea. The s ...

. Its source is the outflow of Llyn Padarn near

Llanberis Llanberis () is a village, community (Wales), community and electoral ward in Gwynedd, northwest Wales, on the southern bank of the lake and at the foot of Snowdon, the highest mountain in Wales. It is a centre for outdoor activity, outdoor ac ...

, and it flows out in a generally northwest direction. Between the outflow and the village of

Llanrug Llanrug (or Llanfihangel-yn-y-grug) is a medium-sized village and community (Wales), community in Gwynedd, north-west Wales. It lies about to the east of Caernarfon, south of Bangor, Gwynedd, Bangor and northwest of Llanberis. It is the larg ...

it is known as the

Afon Rhythallt The River Rhythallt (Welsh language, Welsh: Afon Rhythallt) is a river in Gwynedd, North Wales whose source is Llyn Padarn. It flows in a northwesterly direction past the village of Brynrefail, Gwynedd and changes its name to Afon Seiont downstre ...

, changing its name just after the village. Its mouth is in the town of

Caernarfon Caernarfon (; ) is a List of place names with royal patronage in the United Kingdom, royal town, Community (Wales), community and port in Gwynedd, Wales. It has a population of 9,852 (with Caeathro). It lies along the A487 road, on the easter ...

, forming a natural harbour as it flows out into the Menai Strait. The Afon Nant Peris provides the main inflow into Llyn Peris which then drains into Llyn Padarn with the addition of the waters of the Afon Arddu which drains the northern slopes of

Snowdon Snowdon (), or (), is a mountain in Snowdonia in North Wales. It has an elevation of above sea level, which makes it both the highest mountain in Wales and the highest in the British Isles south of the Scottish Highlands. Snowdon i ...

. The name of the Roman fort of Segontium, near Caernarfon, is based on the Latinised form of the name 'Seiont'. In the Brythonic language translates as 'strong place'.

References

Bontnewydd, Gwynedd Caernarfon Llanddeiniolen Llanrug Waunfawr Rivers of Gwynedd Sites of Special Scientific Interest in West Gwynedd Menai Strait {{Wales-river-stub

See also

References