The Nant Menasgin is a short river in

Powys Powys ( , ) is a Principal areas of Wales, county and Preserved counties of Wales, preserved county in Wales. It borders Gwynedd, Denbighshire, and Wrexham County Borough, Wrexham to the north; the English Ceremonial counties of England, ceremo ...

, Wales whose

headwaters The headwater of a river or stream is the geographical point of its beginning, specifically where surface runoff water begins to accumulate into a flowing channel of water. A river or stream into which one or many tributary rivers or streams flo ...

rise in Cwm Oergwm, beneath Fan y Bîg, in the central

Brecon Beacons The Brecon Beacons (; ) are a mountain range in Wales. The range includes South Wales's highest mountain, Pen y Fan (), its twin summit Corn Du (), and Craig Gwaun Taf (), which are the three highest peaks in the range. The Brecon Beacons ha ...

, and flow northeastwards via Llanfrynach, to join the

River Usk The River Usk (; ) rises on the northern slopes of the Black Mountain (''y Mynydd Du''), Wales, in the westernmost part of the Brecon Beacons National Park. Initially forming the boundary between Carmarthenshire and Powys, it flows north int ...

at Pencelli. The stream in Cwm Oergwm is joined by that from Cwm Cwareli within woodland owned by the

National Trust The National Trust () is a heritage and nature conservation charity and membership organisation in England, Wales and Northern Ireland. The Trust was founded in 1895 by Octavia Hill, Sir Robert Hunter and Hardwicke Rawnsley to "promote the ...

. Above Llanfrynach, much of the length of the river is paralleled by bridleways affording some degree of visibility to the public. The first vehicle bridge to cross the river is Llanfrynach Bridge which also carries the route of the

Taff Trail The Taff Trail () is a Walking in the United Kingdom, walking and cycle path that runs for between Cardiff Bay and Brecon in Wales. It is so named because it follows the course of the River Taff. Along much of its length, it follows the Natio ...

. A further downstream the Monmouthshire and Brecon Canal crosses by means of an aqueduct and a third bridge conveys the B4558 road just northwest of Pencelli.Ordnance Survey Explorer map OL12 'Brecon Beacons National Park: western area'

References

{{DEFAULTSORT:Menasgin Nant Menasgin Rivers of Powys Rivers of the Brecon Beacons National Park

See also

References