The Afon Hydfer is a short river in
Powys in the west of the
Brecon Beacons National Park
The Brecon Beacons National Park ( cy, Parc Cenedlaethol Bannau Brycheiniog) is one of three national parks in Wales, and is centred on the Brecon Beacons range of hills in southern Wales. It includes the Black Mountain (range), Black Mountain ...
, south
Wales
Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...
. Its headwaters rise on the northeastern slopes of the
Black Mountain as the streams named Trinant, Nant y Cadno, Nant yr Erydr and Crognant, joining to flow down Cwm yr Afon on the western edge of
Glasfynydd Forest. The river turns east at Blaenau Uchaf, then northeast through Cwm Hydfer and joins the
River Usk
The River Usk (; cy, Afon Wysg) 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 fl ...
just below Pont ar Hydfer. Other tributaries of the Hydfer include the streams of Nant Cil-y-clawdd, Nant Crinog and Nant Meity.
[Ordnance Survey Explorer map OL12 'Brecon Beacons National Park: western area']
References
{{DEFAULTSORT:Hydfer
Rivers of the Brecon Beacons National Park
Rivers of Powys