Ystradfellte is a village and community in Powys, Wales, with 556 inhabitants. It belongs to the historic county of Brecknockshire (Breconshire) and the Fforest Fawr area of the Brecon Beacons National Park, beside the Afon (river) Mellte. The village is linked by minor roads with Heol Senni to the north and the A4059 north of Penderyn, and with Pontneddfechan, which lies in the community, at the head of the Vale of Neath to the south.
The Afon Mawddach is a river in Gwynedd, Wales, which has its source in a wide area SH820300 north of Dduallt in Snowdonia. It is 28 miles (45 km) in length, and is much branched; many of the significant tributaries are of a similar size to the main river. The catchment area is bounded to the east by the Aran Fawddwy massif and to the west and north by the Harlech dome which forms a watershed just south of Llyn Trawsfynydd.
The River Teifi in Wales forms the boundary for most of its length between the counties of Ceredigion and Carmarthenshire, and for the final 3 miles (4.8 km) of its total length of 76 miles (122 km), the boundary between Ceredigion and Pembrokeshire. Its estuary is northwest of Cardigan. Teifi has formerly been anglicised as "Tivy".
The River Ystwyth is a river in Ceredigion, Wales. The length of the main river is 20.5 miles (33.0 km). Its catchment area covers 75 square miles (190 km2). Its source is a number of streams that include the Afon Diliw, located on the west slopes of Plynlimon on the border of Ceredigion and Powys in the Cambrian Mountains. The Ystwyth flows westwards before its confluence with the Afon Rheidol and the estuary at Aberystwyth to drain into Cardigan Bay.
The Afon Ogwen is a river in north-west Wales draining from some of the greatest peaks in Snowdonia before discharging to the sea on the eastern side of Bangor, Gwynedd.
River Neath is a river in south Wales running south west from its source in the Brecon Beacons National Park to its mouth at Baglan Bay below Briton Ferry on the east side of Swansea Bay.
The River Dwyryd is a river in Gwynedd, Wales which flows principally westwards; draining to the sea into Tremadog Bay, south of Porthmadog.
The River Vyrnwy is a river which flows through northern Powys, Wales, and Shropshire, England. The name derives from Severn, the river of which it is a tributary.
Afon Seiont is a river in Gwynedd, Wales which runs into the Menai Strait.
The Afon Clarach is a small river discharging into Cardigan Bay north of Aberystwyth. It flows through a largely agricultural and forested landscape except in its lowest reaches where its banks are crowded with holiday developments. The Clarach is formed at the confluence of the Afon Stewi and Nant Seilo at Penrhyncoch, with both their headwaters originating in low hills at the edge of the Plynlimon range. The course of the river takes it past the Institute of Biological, Environmental and Rural Sciences, and the village of Bow Street. Between Bow Street and Llangorwen, the river is joined by the Bow Street Brook.
The River Dyfi is a river in Mid Wales. It is approximately 30 miles (48 km) long. Its estuary forms the border between the counties of Gwynedd and Ceredigion, and its lower reaches have historically been considered the boundary between North and South Wales.
The Afon Mynach is a small river in Ceredigion, Wales.
The River 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 downstream of Pont Rhythallt in Llanrug. The Afon Seiont eventually reaches the sea at Caernarfon. The river has a broad flood plain which occasionally threatens homes in the village of Cwm-y-glo.
Afon Wyre, , is a small river in the county of Ceredigion, Wales; also called Afon Wyre Fawr and formerly Gwyrai.
The River Dysynni is a river in mid Wales. Its source is the Tal-y-llyn Lake just south of the Cadair Idris massif and its mouth is in the Cardigan Bay area of the Irish Sea to the north of Tywyn. It measures about 16 mi (26 km) in length.
The Afon Fathew is a river in Gwynedd, north-west Wales. The river is downstream from the Dolgoch Falls which is a popular nature site, and is followed for much of its course by the Talyllyn Railway.
The River Brenig is a tributary river of the River Teifi and runs through the market town of Tregaron in Ceredigion, Wales. It is formed from the confluence of the Afon Groes and Afon Berwyn in the foothills of the Cambrian Mountains.
Afon Braint is a small tidal river on Anglesey, North Wales. There is a series of stepping stones near to the village of Dwyran, and a Grade II bridge near Penmynydd.
