This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the

River Wye The River Wye (; cy, Afon Gwy ) is the Longest rivers of the United Kingdom, fourth-longest river in the UK, stretching some from its source on Plynlimon in mid Wales to the Severn estuary. For much of its length the river forms part of Wal ...

from the River Severn. Tributaries are listed down the page in an upstream direction, starting with those closest to the sea. The main stem (or principal) river of a catchment is given, left-bank tributaries are indicated by (L), and right-bank tributaries by (R). Note that, in general usage, the 'left (or right) bank of a river' refers to the left (or right) hand bank as seen when looking downstream. Where a named river is formed by the confluence of two differently named rivers, these are labelled as (Ls) and (Rs) for the left and right forks. A prime example is the formation of the River Taff from the Taf Fawr and the Taf Fechan at Cefn Coed-y-cymmer. The list includes more or less every watercourse named on Ordnance Survey mapping and thus many of the main rivers of Wales (as defined by Natural Resources Wales ). Difficulties arise otherwise in determining what should and what should not be included. Certain names are encountered frequently and particular care should be taken to differentiate between the various occurrences of Clydach, Clywedog and of Dulas for example as well as those whose names refer perhaps to the colour of their waters e.g. Afon ''Goch'' (''red'' river), Afon ''Ddu'' (''black/dark'' river) and Afon ''Wen'' (''white/light'' river).

Mainland rivers flowing into Liverpool Bay

''From Dee Estuary to Garth Pier,

Bangor, Gwynedd Bangor (; ) is a cathedral city and community A community is a social unit (a group of living things) with commonality such as place, norms, religion, values, customs, or identity. Communities may share a sense of place situated ...

Dee catchment

* River Dee, Wales (Afon Dyfrdwy) ** Nant-y-fflint (L) (flows into Dee Estuary) ** Wepre Brook (L) (flows into Dee Estuary) ** Aldford Brook (R) (wholly in England) ** River Alyn (L) (Afon Alun / River Alun) *** River Cegidog (R) (Afon Cegidog) **** Nant-y-Ffrith (R) *** River Terrig (R) (Afon Terrig) ** Worthenbury Brook (R) *** Emral Brook (Ls) *** Wych Brook (Rs) (formerly known as the "River Elfe") ****

Red Brook Red Brook is a minor river in Greater Manchester in North West England. Rising at the confluence of Caldwell Brook and Sinderland Brook at Covershaw Bridge near Sinderland Green, the river runs north west towards Partington, where it runs into ...

(L) ** River Clywedog (L) (Afon Clywedog) *** River Gwenfro (L) (Afon Gwenfro) *** Glanyrafon Brook (R) **** Black Brook (R) (Afon Ddu) ** Shell Brook (R) ** River Ceiriog (R) (Afon Ceiriog) (head of river is Ceiriog Ddu) *** River Teirw (L) (Afon Teirw) *** Nant Sarffle (R) *** Nant Cwm-y-geifr (R) *** Nant Cwm-llawenog (R) *** Nant Rhydwilym (R) ** River Eitha (L) (Afon Eitha) ** Eglwyseg River (L) ** Afon Morwynion (L) **

River Alwen A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of ...

(L) (Afon Alwen) *** Afon Ceirw (R) *** Merddwr (R) (known as Nant Lleidiog upstream) **** Afon Medrad (R) *** Afon Brenig (L) **

Afon Trystion This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) **

Afon Llynor This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) **

Afon Ceidiog This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) ** Hirnant (R) ** Afon Tryweryn (L) (River Tryweryn) ***

Afon Mynach (Dee) The Afon Mynach ( en, River Mynach) is a small river in Ceredigion, Wales. Its source is at the meeting of two smaller rivers, the Nant Rhuddnant and the Afon Merin. Both of these streams have their sources in lakes high on the Cambrian Mountain ...

(L) ***

Afon Hesgyn This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an ups ...

(L) ***

Afon Gelyn This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) (flows into

Llyn Celyn Llyn Celyn () is a reservoir constructed between 1960 and 1965 in the valley of the River Tryweryn in Gwynedd, Wales. It measures roughly long by wide, and has a maximum depth of . It has the capacity to hold of water. It was originally ...

) *** Nant Aberderfel (R) (flows into Llyn Celyn) ** Afon Llafar (L) (flows into Bala Lake) ** Afon Twrch (R) ** Afon Lliw (L)

Clwyd catchment

* River Clwyd (Afon Clwyd) **

Afon Gele This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ** River Elwy (L) (Afon Elwy)(Also known as Afon Cledwen above the village of Llangernyw) ***

Afon Meirchion This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) *** River Aled (R) *** Afon Gallen (Ls) ** River Wheeler (R) (Afon Chwiler) **

Afon Ystrad This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) ** River Clywedog (Clwyd) (L) (Afon Clywedog) (Not to be confused with the Dee tributary of the same name)

Conwy catchment

* River Conwy (Afon Conwy) ** Afon Gyffin (L) ** Afon Roe (L) (known as Afon Tafolog in upper reaches) ** Afon Dulyn (L) ***

Afon Ddu (Welsh for ''black river'') is the name of several rivers in Snowdonia in north-west Wales: * The largest of these flows from Llyn Cowlyd on the south-eastern edge of the Carneddau range to join the river Conwy, passing Pont Dolgarrog on the ...

(L) ***

Afon Garreg-wen This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the Severn Bridge, M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributary, Tributaries are listed do ...

(L) *** Ffrwd Cerriguniawn (L) *** Afon Melynllyn (R) ** Afon Porth-llwyd (L) ***

Afon Eigiau Afon Eigiau is a small river in the Carneddau mountains in Snowdonia, in north-west Wales, which flows down Cwm Eigiau and into Llyn Eigiau. It is fed by smaller streams which flow down the slopes of neighbouring Foel Grach Foel Grach i ...

(L) ** Afon Crafnant (L) ***

Afon Geirionydd The River Geirionydd (''Afon Geirionydd'' in Welsh) is a river in Snowdonia, North Wales. It is a tributary of the River Crafnant (''Afon Crafnant''), which flows over the Fairy Falls waterfall in Trefriw, and thence on into the River Conwy ( ...

(R) ** Afon Gallt y Gwg (R) ** Nant y Goron (R) ** Afon Llugwy (L) ***

Nantygwryd Dyffryn Mymbyr is a valley in Snowdonia, in north-west Wales, approximately in length, and leading up from Capel Curig to the Pen-y-Gwryd hotel. The river Nantygwryd, originally called Y Mymbyr in Llywelyn the Great's charter of 1198, starts ...

(R) **

Afon Lledr The ( en, River Lledr, italic=yes) is a river in north-west Wales and the second major tributary of the River Conwy. It is about 10 miles or 16 km long, and flows in a generally easterly direction. The has its source on the eastern slo ...

(L) ***

Afon Wybrnant This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the Severn Bridge, M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributary, Tributaries are listed do ...

(R) ***

Afon Maesgwm This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an ups ...

(R) *** Afon Ystumiau (L) ** Afon Machno (L) ***

Afon Glasgwm This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) **

Afon Iwrch The Afon Iwrch is a river near Llanrhaeadr-ym-Mochnant in Clwyd, Wales. It is a tributary of the River Tanat and is in length. Its headwaters lie on the eastern slopes of Cadair Berwyn, the highest peak of the Berwyn range, and the river flow ...

(R) ** Afon Eidda (L) ** Merddwr (R) **

Afon Caletwr This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) ** Afon Serw (R)

Simple coastal catchments

* Afon Gyrach *

** Afon Glan-sais (L) ** Afon Maes-y-bryn (R)

Aber catchment

* Afon Aber ** Afon Anafon (Rs) **

Afon Rhaeadr Fawr This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(Ls) ***

Afon Rhaeadr Bach This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(Ls) ****

Afon Gam This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) *** Afon Goch (Rs)

Ogwen catchment

* Afon Ogwen ** Afon Caseg (R) *** Afon Llafar (L) *** Afon Denau (flows into Llyn Ogwen) **** Nant Gwern y Gof (L) ***

Afon Lloer Afon Lloer is a small river in Snowdonia in north-west Wales. It is the outflow from Ffynnon Lloer, a lake in the Carneddau mountains, and it flows into Llyn Ogwen Llyn Ogwen (; ) is a ribbon lake in north-west Wales. It lies alongside the ...

(flows into Llyn Ogwen)

Cegin catchment

* River Cegin (Afon Cegin)

Adda catchment

* River Adda (Afon Adda)

Isle of Anglesey rivers

Anticlockwise from Menai Bridge / Porthaethwy

Minor coastal catchments

Afon Cadnant The Afon Cadnant ( en, River Cadnant) is a small river on Anglesey, North Wales, which drains to the Menai Strait about 1 km north-east of the Menai Suspension Bridge. The river drains a largely agricultural area from Llandegfan to Llansadw ...

(River Cadnant) * Nant Meigan * Lleiniog *

Afon Nodwydd This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an ups ...

Afon y Marchogion This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

Afon Lligwy This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an ups ...

* Nant Perfedd * Afon Goch (Dulas) * Nant y Beddyw *

Afon Bryn Gwyn This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an ups ...

* Afon Goch (Amlwch) *

Afon Wygyr This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

* Gwter Fudr * Afon Alaw (River Alaw)

Crigyll catchment

* Afon Crigyll ** Afon Caradog (L)

Ffraw catchment

* Afon Ffraw **

Afon Frechwen The Afon Ffraw is a short river on the Isle of Anglesey, Wales. It arises at Llyn Coron and flows southwest for two miles along the northwestern margin of Twyn Aberffraw ('Aberffraw dunes') via the village of Aberffraw to Aberffraw Bay on the islan ...

(L) **

Afon Gwna The Afon Ffraw is a short river on the Isle of Anglesey, Wales. It arises at Llyn Coron and flows southwest for two miles along the northwestern margin of Twyn Aberffraw ('Aberffraw dunes') via the village of Aberffraw to Aberffraw Bay on the islan ...

(flows into Llyn Coron)

Cefni catchment

* Afon Cefni (River Cefni) **

Afon Newydd This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ** Afon Ceint (L) **

Afon Erddreiniog This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) (flows into Cefni Reservoir)

Braint (i) catchment

The Afon Braint bifurcates near Llanfairpwllgwyngyll to form two different watercourses. *

Afon Braint Afon Braint ( en, River Braint) is a small tidal river on Anglesey, North Wales. There is a series of stepping stones near the village of Dwyran, and a Grade II bridge near Penmynydd. Until recently, there was an electoral ward named after the ...

(River Braint, Dwyran) **

Afon Rhyd y Valley This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L)

Braint (ii) catchment

(LlanfairPG) **

Afon Rhyd Eilian This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ''Note "Afon Menai", known as the "

Menai Strait The Menai Strait ( cy, Afon Menai, the "river Menai") is a narrow stretch of shallow tidal water about long, which separates the island of Anglesey from the mainland of Wales. It varies in width from from Fort Belan to Abermenai Point to from ...

" in English, is not technically a river, despite its Welsh name.''.

Mainland rivers flowing into the
Menai Strait The Menai Strait ( cy, Afon Menai, the "river Menai") is a narrow stretch of shallow tidal water about long, which separates the island of Anglesey from the mainland of Wales. It varies in width from from Fort Belan to Abermenai Point to from ...
and Caernarfon Bay

''From Bangor Pier to the tip of the Llŷn Peninsula''

Seiont catchment

* Afon Seiont (River Seiont) (known as Afon Rhythallt above Pont-Rhythallt) **

Afon Nant Peris This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(flows into Llyn Peris) ***

Afon Arddu This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L)

Gwyrfai catchment

Afon Gwyrfai The Afon Gwyrfai is a short river in Gwynedd, Wales. For half of its length it flows through Snowdonia National Park. Exiting Llyn y Gader it flows north through the small village of Rhyd-ddu to enter the southeastern end of Llyn Cwellyn. Downstr ...

Afon Carrog This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the Severn Bridge, M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributary, Tributaries are listed do ...

(L) ***

Afon Rhŷd This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R)

Simple coastal catchments

Afon Llifon This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

* Afon Llyfni, Lleyn * Afon Desach *

Afon Hen This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

Nant Gwrtheyrn Nant Gwrtheyrn is a Welsh Language and Heritage Centre, located near the village of Llithfaen on the northern coast of the Llŷn Peninsula, Gwynedd, in northwest Wales. It is sometimes referred to as 'the Nant' and is named after the valley wh ...

* Afon Geirch *

Afon Amwlch This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

Afon Pen-y-graig This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

Rivers flowing into Cardigan Bay

''From the tip of the Llŷn Peninsula to

St. David's Head ST, St, or St. may refer to: Arts and entertainment * Stanza, in poetry * Suicidal Tendencies, an American heavy metal/hardcore punk band * Star Trek, a science-fiction media franchise * Summa Theologica, a compendium of Catholic philosophy ...

'' * Afon Saint

Daron catchment

Afon Daron This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstre ...

Afon Cyllyfelin This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R)

Soch catchment

Afon Soch The Afon Soch is a short river on the Llŷn peninsula, Gwynedd, Wales. It arises to the north of the village of Sarn Meyllteyrn, through which it then flows, turning southeast towards Botwnnog. Beyond Botwnnog it is joined by its main left-bank t ...

** Afon Horon (L)

Rhyd-hir catchment etc

Afon Rhyd-hir The Afon Erch is a short river on the Llŷn peninsula, Gwynedd, Wales. It arises on the slopes of Bwlch Mawr, flowing south and southwest towards the hamlet of Llwyndyrys where it turns abruptly eastwards and curves around to the south, passing ...

** Afon Penrhos (R) *

Afon Erch The Afon Erch is a short river on the Llŷn peninsula, Gwynedd, Wales. It arises on the slopes of Bwlch Mawr, flowing south and southwest towards the hamlet of Llwyndyrys where it turns abruptly eastwards and curves around to the south, passing ...

* Afon Wen

Dwyfor catchment

* Afon Dwyfor **

Afon Dwyfach The Afon Dwyfor is a river in Gwynedd, north-west Wales, in total the river is in length. It rises in Cwm Dwyfor at the head of Cwm Pennant, gathers to itself numerous streams which drain the surrounding mountains from Mynydd Graig Goch in the ...

(R) ** Afon Henwy (L)

Glaslyn catchment

Afon Glaslyn The Afon Glaslyn (English, ''River Glaslyn'') is a river in Gwynedd, north-west Wales. While not of great significance in terms of its length (about ), it is one of Gwynedd's primary rivers, and has greatly influenced the landscape in which it ...

** Afon Dylif ***

Afon Croesor This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) **

Nantmor Nantmor is a hamlet which lies about 1½ miles to the south of the village of Beddgelert in Gwynedd, Wales. The current spelling of the name Nantmor is more modernmost old documentfrom the 16th to the 18th century record the name as Nanmor. It ...

(L) **

Afon Colwyn The Afon Colwyn ( en, River Colwyn, italic=yes) is a small river in Gwynedd, north-west Wales, a tributary of the Afon Glaslyn. It has its source on the south-western flank of Snowdon. It first flows west to cross the A4085 Caernarfon to Bed ...

(R) ** Afon Llynedno (L) * Afon Dwyryd (Headwaters are disputed to be the Afon Goedol) **

Afon y Glyn This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) **

Afon Prysor The River Dwyryd ( cy, Afon Dwyryd, meaning a river of two fords) is a river in Gwynedd, Wales which flows principally westwards; draining to the sea into Tremadog Bay, south of Porthmadog. Geography The Dwyryd rises in the hills to the north o ...

(L) **

Afon Cynfal This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ** Afon Teigl (L) **

Afon Bowydd This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

Afon Tafarn Helyg This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

Artro catchment

* Afon Artro ** Afon Cwmnantcol (L)

Ysgethin catchment

Afon Ysgethin The Afon Ysgethin is a short river in Gwynedd, Wales. Flowing entirely within Snowdonia National Park it rises beneath the peaks of Y Llethr and Diffwys within the Rhinogs mountain range and runs in a generally ESE direction towards Cardigan Ba ...

Mawddach catchment

* Afon Mawddach ** Afon Dwynant (R) ** Afon Gwynant (L) **

Afon Cwm-llechen This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the Severn Bridge, M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributary, Tributaries are listed do ...

(R) **

Afon Cwm-mynach This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) ** Afon Wnion (L) *** Afon Clywedog (L) ***

Afon Celynog This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ** Afon Wen (L) ** Afon Gamlan (R) ** Afon Eden (R) *** Afon Crawcwellt (R) ** Afon Gain (R)

Dysynni catchment

Afon Dysynni , name_etymology = , image = Afon Dysynni & Morfa Gwyllt - geograph.org.uk - 194680.jpg , image_size = , image_caption = Dysynni estuary , map = , map_size = , map_caption ...

(R) **

Afon Fathew The Afon Fathew ( en, River Mathew/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. Name The bas ...

(L) **

Afon Cadair This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) ** Nant Gwernol (L)

Dyfi catchment

* River Dyfi (River Dovey) **

Afon Leri The Afon Leri ( en, River Leri) is a river in Ceredigion, Wales. It rises at Llyn Craig-y-Pistyll and is joined at Talybont by Afon Ceulan before passing behind Borth to its mouth in the Dyfi Democratic Youth Federation of India (DYFI ...

(L) *** Afon Ceulan (R) **

Afon Einion This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ** Afon Llyfnant (L) ** Afon Dulas (R) (North Dulas) *** Afon Deri (R) *** Nant Ceiswyn (R) ** Afon Dulas (L) (South Dulas) ** Afon Twymyn (L) *** Afon Rhiwsaeson (R) ****

Afon Laen This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ** Afon Angell (R) ** Afon Cleifion (L) *** Afon Dugoed (Rs) *** Afon Tafolog (Ls) **

Afon Cerist The Afon Cerist is a small river that flows from underneath Craig Portas, the cliffs on the north side of Maesglase mountain, to meet the River Dyfi at Dinas Mawddwy Dinas Mawddwy () is a village in the community of Mawddwy in south-east Gwyn ...

(R) ** Afon Cywarch (R)

Clarach catchment

* Afon Clarach (formed at the confluence of

Afon Stewi This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstre ...

and Nant Silo) ** Bowstreet Brook (R) **

Afon Peithyll This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(Ls)

Rheidol catchment

* River Rheidol (Afon Rheidol) ** Afon Melindwr (R) ** River Mynach (L) (Afon Mynach) ***

Afon Merin This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(Rs) *** Nant Rhuddnant (Ls) **

Afon Castell This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ** Afon Llechwedd Mawr (flows into Nant y Moch Reservoir) ***

Afon Lluestgota This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) **

Afon Hengwm This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(flows into Nant y Moch Reservoir) ***

Afon Hyddgen This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) **

Nant-y-moch Nant-y-moch Reservoir () is situated in the Cambrian Mountains in northern Ceredigion, Wales, near Pumlumon. The reservoir which flooded a part of the valley of the River Rheidol and its headwaters derives its name from a stream, the Nant-y-m ...

(stream flowing into Nant-y-moch Reservoir)

Ystwyth catchment

* River Ystwyth (Afon Ystwyth) **

Afon Fâd This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ** Afon Llanfihangel (R) *** Nant Cynon (Ls) **

Afon Magwr This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) ** Nant Freuo (L) ** Nant Pant-yr-Haidd (R) ** Nant Cwmtarw (L) *** Nant Cwm-nel (L) ** Nant Cilmeddu (L) ** Nant y Henfelin (L) *** Nant yr Brithyll (R) ** Nant y Berws (L) ** Nant Cell (R) ** Nant Lledwenau (R) ** Nant Bwlchgwallter (L) ** Nant Peiran (R) *** Nant Crafanglach (R) *** Nant Perfedd (L) *** Nant Ffrin-fawr (Rs) **** Nant Hylles (L) ** Nant Gau (L) *** Nant Ffrwd-ddu (L) ** Nant Cae-glas (R) *** Nant y Gwndwn-gwyn (Ls) *** Nant Cwta (Rs) ** Nant Milwyn (L) ** Nant Byr (L) ** Nant y Gwaith (R) ** Nant Watcyn (R) ** Nant yr Onnen (R) ** Nant Cwm-du (L) ** Nant Stwc (R) ** Nant Penygwndwn (L) ** Nant Garw (R) ** Nant y Cae Isaf (L) ** Nant y Cae (L) ** Nant Troedyrhiw (R) **

Afon Diliw This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) *** Nant yr Gafod (R) *** Diliw Fechan (R) *** Nant y Caseg (L) *** Nant yr Eglwys **** Nant yr Eglwys-fach (L) *** Nant Lwyd (R) *** Nant y Gorlan (Rs) *** Nant Llychese (R) ** Nant Rhydyfelin (L) ** Nant Ffos-casaf (L)

Wyre catchment

* Afon Wyre **

(R) ** Wyre Fach (L) *** Nant Rhydrosser (L) *** Afon Tryal (L) **

Afon Beidog This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstre ...

(L)

Cledan catchment

* Afon Cledan

Arth catchment

River Arth The River Arth is a small river that rises in the hills near Bethania, Ceredigion, Wales, and runs west for and discharges into Cardigan Bay at Aberarth. Despite its small size it is one of the few rivers in Britain which has a bore Bore ...

Aeron catchment

Afon Aeron The River Aeron ( cy, Afon Aeron) is a small river in Ceredigion, Wales, that flows into Cardigan Bay at Aberaeron. It is also referred to on some older maps as the River Ayron. Etymology The name of the river means "battle" or "slaughter ...

** Afon Mydr (L) ** Gwenffrwd (R)

Coastal streams

Afon Drywi This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

* Afon Soden *

Afon Fynnon Ddewi This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

* Nant Hawen * Hoffnant

Teifi catchment

* River Teifi (Afon Teifi) **

Afon Piliau This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ** Nant Arberth (R) ** Afon Cych (L) *** Afon Dulas (L) *** Afon Pedran (L) *** Afon Sylgen (R) **

Afon Hirwaun This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) ** Nant Elfed (R) ** Afon Ceri (R) ***

Afon Dulas (Lampeter) The Afon Dulas, or North Dulas, is a river forming the border between Merionethshire/Gwynedd and Montgomeryshire/Powys in Wales. Another river called Afon Dulas joins the Dyfi from the south, upstream of its confluence with the North Dulas: loca ...

(R) ***

Afon Bedw This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the Severn Bridge, M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributary, Tributaries are listed do ...

(L) ** Nant Bargod (L) ** Afon Tyweli (L) ***

Afon Talog This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) ** Afon Clettwr (P) *** Clettwr Fawr (Rs) *** Clettwr Fach (Ls) ** Nant Cledlyn (R) ** Afon Duar (L) ** Afon Granell (R) ** Afon Dulas (Llandyssul) (R) *** Afon Denys (R) ** Nant Clywedog (L) *** Clywedog-isaf (Ls) *** Clywedog-ganol (Rs) **** Clywedog-uchaf (R) ** Afon Brefi (L) ** Nant Bryn-maen (R) ** Afon Berwyn (L) ***

Afon Groes This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstre ...

(R) **

Afon Fflur This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ** Camddwr (R) **

Afon Meurig This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) ** Nant Lluest (R) ** Glasffrwd (L) ** Nant Egnant (L) ** Nant Rhydol (R)

Nyfer catchment etc

* Afon Nyfer ** Nant Duad (R) **

Afon Brynberian This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) **

Afon Bannon This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L)

Minor coastal catchments

* River Gwaun (Afon Gwaun) **

River Aer A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...

(L)

Rivers flowing to west Pembrokeshire coast

''From

St David's Head St David's Head ( cy, Penmaen Dewi) is a headland in the Pembrokeshire Coast National Park, southwest Wales, which marks the divide between the Irish Sea and the Celtic Sea. It is noted for its wildflowers and wildlife, and for the remains of ...

St. Govan's Head ST, St, or St. may refer to: Arts and entertainment * Stanza, in poetry * Suicidal Tendencies, an American heavy metal/hardcore punk band * Star Trek, a science-fiction media franchise * Summa Theologica, a compendium of Catholic philosophy ...

Minor catchments

* River Alun * River Solva (Afon Solfach) *

Brandy Brook Brandy is a liquor produced by distilling wine. Brandy generally contains 35–60% alcohol by volume (70–120 US proof) and is typically consumed as an after-dinner digestif. Some brandies are aged in wooden casks. Others are coloured wit ...

Cleddau catchment

Daugleddau The River Cleddau ( cy, Afon Cleddau) consists of the Eastern and Western Cleddau rivers in Pembrokeshire, west Wales. They unite to form the Daugleddau estuary and the important harbour of Milford Haven. The name of the combined estuary – ...

(estuary is Daugleddyf or

Milford Haven Milford Haven ( cy, Aberdaugleddau, meaning "mouth of the two Rivers Cleddau") is both a town and a community in Pembrokeshire, Wales. It is situated on the north side of the Milford Haven Waterway, an estuary forming a natural harbour that has ...

downstream) ** Pembroke River (L) ** Carew River (L) ** Cresswell River (L) ** Western Cleddau (Rs) ***

Millin Brook Millin is a surname. Notable people with the surname include: *Aubin-Louis Millin de Grandmaison (1759–1818), antiquary and naturalist erudite in various domains *Bill Millin (1922–2010), personal piper to Simon Fraser, 15th Lord Lovat, command ...

(L) *** Merlin's Brook (R) *** Cartlett Brook (L) ***

Knock Brook Knock may refer to: Places Northern Ireland * Knock, Belfast, County Down * Knock, County Armagh, a List of townlands in County Armagh, townland in County Armagh Republic of Ireland * Knock, County Clare, village in County Clare * Knock, Count ...

(R) **** Camrose Brook (R) ***

Rudbaxton Water Rudbaxton is a village, parish and a local government Community (Wales), community in the county of Pembrokeshire, Wales. It is from Cardiff and from London. Description The community includes the expanding village of Crundale, Pembrokeshire, C ...

(L) *** Spittal Brook (L) *** Nant-y-coy Brook (R) ***

Afon Anghof This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ****

Afon Glan-rhyd This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) *** Nant y Bugail (L) ***

Afon Cleddau The River Cleddau ( cy, Afon Cleddau) consists of the Eastern and Western Cleddau rivers in Pembrokeshire, west Wales. They unite to form the Daugleddau estuary and the important harbour of Milford Haven. The name of the combined estuary – ...

(upper reaches of Western Cleddau) ** Eastern Cleddau (Ls) *** Afon Syfynwy (R) *** Afon Wern (R)

Rivers flowing into the
Bristol Channel The Bristol Channel ( cy, Môr Hafren, literal translation: "Severn Sea") is a major inlet in the island of Great Britain, separating South Wales from Devon and Somerset in South West England. It extends from the lower estuary of the River Seve ...

''From

to M48 Bridge''

Taf catchment

* River Tâf (Afon Taf) ** River Cywyn (Afon Cywyn) (L) **

Afon Cynin This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) ***

Afon Dewi Fawr This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstre ...

(L) ***

Afon Sien This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) **

Afon Fenni This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) ** Afon Gronw (L) ** Afon Marlais (R)

Towy catchment

* Afon Tywi (River Towy) ** Afon Gwili (R) ** Afon Annell (R) ** River Cothi (R) (Afon Cothi) ***

Afon Gorlech This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) *** Afon Twrch (R) *** Afon Marlais (R) ** Afon Dulas (R) **

Afon Cennen The Afon Cennen is a river in the county of Carmarthenshire, south Wales. It rises on the northern slopes of the Black Mountain to the east of the summit of Tair Carn Uchaf and flows north to Blaencennen Farm, then westwards past Carreg Cennen ...

(L) ** Afon Sawdde (L) **

Afon Bran This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstre ...

(L) ***

Afon Ydw This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) ** Afon Dulais (R) ** Afon Brân (L) *** Cynnant Fawr (Rs) **** Cynnant Fach (L) *** Afon Lwynor (Ls) *** Afon Crychan (L) *** Afon Gwydderig (L) **

Afon Gwenlais This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) ** Gwenffrwd (R) *** Nant Melyn (R) ** Afon Doethie (R) ***

Afon Pysgotwr Fawr This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) **** Afon Pysgotwr Fach (R) ** Camddwr (R)

Gwendraeth catchment

* River Gwendraeth **

Gwendraeth Fach The River Gwendraeth ( cy, Afon Gwendraeth) is a river in Carmarthenshire in West Wales. It has two almost equal branches that have their confluence in their joint estuary at Carmarthen Bay. The Gwendraeth Fawr (''large Gwendraeth'' in English) ...

(Rs) **

Gwendraeth Fawr The River Gwendraeth ( cy, Afon Gwendraeth) is a river in Carmarthenshire in West Wales. It has two almost equal branches that have their confluence in their joint estuary at Carmarthen Bay. The Gwendraeth Fawr (''large Gwendraeth'' in Engl ...

(Ls)

Lliedi catchment

* River Lliedi (Afon Lliedi)

Loughor catchment

River Loughor The River Loughor () ( cy, Afon Llwchwr) is a river in Wales which marks the border between Carmarthenshire and Swansea. The river is sourced from an underground lake at the Black Mountain emerging at the surface from Llygad Llwchwr which trans ...

(Afon Llwchwr) **

Burry Pill Burry is a surname. Notable people with the surname include: * Andrew George Burry (1873–1975), businessman, manufacturer and philanthropist *Harold Burry (1912–1992), head football coach at Westminster College * Hugh Burry (1930–2013), New Z ...

(L) ** Afon Lliw (L) *** Afon Llan (L) ** Afon Gwili (R) **

River Amman The River Amman () is a river of south Wales, which joins the River Loughor at Pantyffynnon. The source of the Amman is on the Black Mountain. The river name is said to derived from the Welsh word ' "pig, piglet", reflecting the way in which ...

(L) **

Afon Lash This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the Severn Bridge, M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributary, Tributaries are listed do ...

(R) ** Afon Morlais (R) ** Afon Dulais **

Afon Camffrwd This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an ups ...

Clyne catchment

* Clyne River

Tawe catchment

* River Tawe ** Nant y fendrod (L) ** Lower Clydach River (R) **

Upper Clydach River The Upper Clydach River runs from a poorly drained area south of Cwmgors and flows south and southeast through Cwm Gors for about 7 km to join the River Tawe at Pontardawe Pontardawe () is a town and a community in the Swansea Valley (Wels ...

(R) ***

River Egel A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...

(L) ** Afon Twrch (R) *** Nant Gwys (L) **** Gwys Fawr (Ls) **** Gwys Fach (Rs) *** Nant Llynfell (R) *** Nant y Llyn (R) ** River Giedd (R) *** Nant Cyw (L) *** Nant Ceiliog (L) ** Nant Llech (L) *** Nant Llech Pellaf (L) **

River Haffes The Afon Haffes is a river in Powys, Wales and is wholly contained within the Brecon Beacons National Park (Parc Cenedlaethol Bannau Brycheiniog). Its headwaters rise on the southern and western slopes of Fan Hir at the eastern edge of the Black ...

(R) ** Nant Byfre (L) ** Nant y Llyn (R)

Neath catchment

* River Neath ** River Clydach (R) **

River Dulais River Dulais ( cy, Afon Dulais) is a river of Wales which has its source at Mynydd y Drum. It joins the River Neath after flowing over Aberdulais Falls The Aberdulais Falls are found on the River Dulais at Aberdulais, near Neath in the county ...

(R) **

Melin Cwrt Brook Melin is a commune in the Haute-Saône department Department may refer to: * Departmentalization, division of a larger organization into parts with specific responsibility Government and military *Department (administrative division), a ge ...

(L) **

Clydach Brook Clydach may refer to any of various settlements and rivers in South Wales: * Clydach, Monmouthshire (village) * Clydach, Swansea (village) :*Clydach (electoral ward), an electoral ward in the City and County of Swansea * Clydach Gorge, (Welsh Cwm Cl ...

(L) ** Nedd Fechan (Rs) *** Afon Pyrddin (R) ** Afon Mellte (Ls) *** Sychryd(L) *** Afon Hepste (L) ***

Afon Llia The Afon Llia is a short river in Powys, Wales, and which is wholly contained within the Brecon Beacons National Park. Several streams draining the eastern slopes of Fan Nedd and the western slopes of Fan Dringarth in the Fforest Fawr sectio ...

(Rs) *** Afon Dringarth (Ls)

Afan catchment

* River Afan ** Ffrwd Wyllt (L) ** Nant Cwm Wenderi ** Afon Pelenna (R) ** Nant Cregan ** Afon Corrwg (R) *** Afon Corrwg Fechan (R)

Kenfig catchment

* River Kenfig (Afon Cynffig)

Ogmore catchment

* River Ogmore (Afon Ogwr) ** River Ewenny (L) *** Afon Alun (L) ***

Afon Ewenny Fach This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) *** Nant Canna (L) *** Nant Crymlyn (R) ** River Llynfi (R) *** Nant y Gadlys (R) *** Nant Cwm-du (L) **

Afon Garw The River Garw (''Afon Garw'' in Welsh, meaning "rugged river") runs for about 12 miles from its source in the hills north of Blaengarw to the confluence with the River Ogmore and the River Llynfi at Aberkenfig. It is one of three main tributarie ...

(R) **

Afon Ogwr Fawr This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(Rs) ** Afon Ogwr Fach (Ls) *** Nant Iechyd (R)

Col-huw catchment

Afon Col-huw The Afon Col-huw (Often River Colhuw, sometimes Anglicised Colhugh) is a very short river in Llantwit Major in the Vale of Glamorgan, south Wales. It is an exceptionally short river, with a length of only 1 mile/1.6 kilometres long. It is form ...

** Ogney Brook (Rs) ** Hoddnant (Ls) ***

Boverton Brook Boverton ( cy, Trebefered) is a village located to the east of Llantwit Major in the Vale of Glamorgan in South Wales. History Boverton was founded during the reign of William the Conqueror in England. It is thought that he himself founded Bover ...

(Ls) ***

Llanmaes Brook Llanmaes ( cy, Llanfaes) is a small village and community in the Vale of Glamorgan near the market town of Llantwit Major. The population in 2011 was 403. Amenities Llanmaes has a long history, with remains of a Roman fort in fields next to ...

(Rs)

Thaw catchment

* River Thaw ** Kenson River (L) *** River Waycock (Ls) *** Nant Llancarfan (Rs) ** Nant y Stepsau (R)

Cadoxton catchment

Cadoxton River The Cadoxton River ( cy, Afon Tregatwg) is a short river in the Vale of Glamorgan, South Wales and with a length of about 5 miles/8 kilometres it is one of Wales's shortest rivers. Course The water course becomes known as the Cadoxton just north ...

Sully Brook Sully may refer to: * Chesley "Sully" Sullenberger (born 1951), American pilot notable for landing his disabled airliner on the Hudson ** ''Sully'' (film), a 2016 film by Clint Eastwood about Sullenberger Places France * Sully, Calvados, commun ...

(L) **

Cold Brook, Cadoxton Cold is the presence of low temperature, especially in the atmosphere. In common usage, cold is often a subjective perception. A lower bound to temperature is absolute zero, defined as 0.00K on the Kelvin scale, an absolute thermodynamic ...

(R) *** Nant yr Argae (L) **

East Brook, Cadoxton East or Orient is one of the four cardinal directions or points of the compass. It is the opposite direction from west and is the direction from which the Sun rises on the Earth. Etymology As in other languages, the word is formed from the fac ...

(L) ** Bullcroft Brook (Ls) ** Wrinstone Brook (Rs)

Taff catchment

* River Taff (Afon Taf) ** River Ely (Afon Elái) (R) *** Afon Clun (L) (Nant Myddlyn in upper reaches) **

River Rhondda The River Rhondda ( cy, Afon Rhondda) is a river in South Wales with two major tributaries, Rhondda Fawr (meaning ''big Rhondda'') and Rhondda Fach (meaning ''little Rhondda''). Description The river has two major tributaries, the ''Rhondda Fa ...

(R) (Afon Rhondda) *** Rhondda Fawr (Ls) *** Rhondda Fach (Rs) *** River Ritec (Afon Ritec) ** Nant Clydach (R) ** River Cynon (R) (Afon Cynon) ***

Aman River Aman may refer to:Poli People First names * Aman Hambleton (born 1992), Canadian chess grandmaster * Aman Hayer (born 1979), Bhangra musician * Aman Verma (actor) (born 1971), Indian actor Surnames * Mohammed Aman (born 1994), Ethiopian mid ...

***

Afon Dar This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an ups ...

***

Afon Pennar This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstre ...

Bargoed Taf Bargoed ( cy, Bargod) is a town and community in the Rhymney Valley, Wales, one of the South Wales Valleys. It lies on the Rhymney River in the county borough of Caerphilly. It straddles the ancient boundary of Glamorgan and Monmouthshire, with ...

(L) ** Nant Morlais **

Taf Fechan The River Taff ( cy, Afon Taf) is a river in Wales. It rises as two rivers in the Brecon Beacons; the Taf Fechan (''little Taff'') and the Taf Fawr (''great Taff'') before becoming one just north of Merthyr Tydfil. Its confluence with the Ri ...

(Ls) ** Nant Ffrwd (Rs)

Rhymney catchment

* Rhymney River (Afon Rhymni) ** Nant Bargod Rhymni (R)

Usk catchment

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 ...

(Afon Wysg) ** Ebbw River (R) (Afon Ebwy) *** Sirhowy River (R) *** River Ebbw Fach (L) **

Afon Llwyd The Afon Lwyd or Afon Llwyd ( en, 'grey river') is a long river in south-east Wales which flows from its source northwest of Blaenavon, through Abersychan, Pontnewynydd, Pontypool, Llanfrechfa and Cwmbran before flowing, at Caerleon, into the R ...

(R) **

Sôr Brook The Sôr Brook is a right bank tributary of the River Usk running largely in Monmouthshire in south Wales, though the watercourse forms the boundary with neighbouring Torfaen in places. Its uppermost reaches were inundated by the construction o ...

(R) ** Olway Brook (L) **

Berthin Brook The Berthin Brook is a minor right bank tributary of the River Usk in Monmouthshire, in south Wales. Flowing north from New Inn initially, it turns east at Little Mill to flow along a former glacial meltwater channel past the former Royal Ordnanc ...

(R) **

Afon Gafenni The River Gavenny or sometimes the Gavenny River ( cy, Afon Gafenni) is a short river in Monmouthshire in south Wales. It rises southwest of the village of Llanvihangel Crucorney from springs near Penyclawdd Court, supplemented by springs in Bl ...

(L) (River Gavenny) *** Afon Cibi (R) ** River Clydach (R) ** Grwyne Fawr (L) *** Grwyne Fechan (R) ** Rhiangoll (L) ** Nant Cleisfer (R) **

Afon Crawnon The Afon Crawnon is a river in the Brecon Beacons National Park in the county of Powys, Wales. The headwaters rise on the hills north of Trefil and flow northeast down a valley known as Dyffryn Crawnon for 7 km to a confluence with the River ...

(R) **

Caerfanell The Caerfanell is a river which rises in the central section of the Brecon Beacons National Park in Powys, Wales. It rises as Blaen Caerfanell on the plateau of Gwaun Cerrig Llwydion and drops steeply down southeastwards into the head of Glyn Col ...

(R) **

Nant Menasgin The Nant Menasgin is a short river in Powys, Wales whose headwaters rise in Cwm Oergwm, beneath Fan y Bîg, in the central Brecon Beacons, and flow northeastwards via Llanfrynach, to join the River Usk at Pencelli. The stream in Cwm Oergwm is jo ...

(R) **

Afon Cynrig The Afon Cynrig is a river in Powys, Wales whose headwaters rise in the central Brecon Beacons and flow northwards to join the River Usk at Abercynrig just east of Brecon. Two rivers combine to form the Cynrig just above Cantref - these being ...

(R) **

River Honddu The River Honddu ( cy, Afon Honddu) (pronounced ''hon-thee'') is a river in the Black Mountains within the Brecon Beacons National Park, southeast Wales. Early recorded versions of the name are of the form ''Hothenei'' and ''hodni'' which are be ...

(L) **

Afon Tarell The Afon Tarell is a river in Powys, Wales, which rises to the west of the Brecon Beacons in Brecon Beacons National Park and flows north, then north-east, for into the River Usk. The river is followed for its entire length through Glyn Tarell ( ...

(R) *** Nant Cwm Llwch **

Afon Ysgir The Afon Ysgir is a river which rises on the southern slopes of Mynydd Epynt in Powys, Wales. The tributaries known as Ysgir Fawr and Ysgir Fechan flow past the hamlets of Pont Rhyd-y-berry and Merthyr Cynog to combine at Pont-faen and continu ...

(L) **

Nant Brân The Nant Brân is a short river which rises on the southern slopes of Mynydd Epynt in Powys, Wales. The word 'brân' means 'crow' in Welsh: the name may therefore allude to the dark colour of its waters. Its upper reaches are within the military ...

(L) **

Afon Cilieni The Afon Cilieni is a short river which rises on the southern slopes of Mynydd Epynt in Powys, Wales. The name may mean ' the river rising in a small nook'. Its upper reaches are within the military training area of SENTA, the British Army's Senn ...

(L) **

Afon Senni The Afon Senni is a river in Powys, Wales which rises in the Fforest Fawr section of the Brecon Beacons National Park and flows northwards for to a confluence with the River Usk at Sennybridge. The river rises as Blaen Senni to the north of the ...

(R) ** Afon Crai (R) **

Afon Hydfer The Afon Hydfer is a short river in Powys in the west of the Brecon Beacons National Park, south Wales. Its headwaters rise on the northeastern slopes of the Black Mountain as the streams named Trinant, Nant y Cadno, Nant yr Erydr and Crognant, ...

(R)

Wye catchment

(Afon Gwy) **

River Trothy The River Trothy ( cy, Afon Troddi) is a river which flows through north Monmouthshire, in rural south east Wales. The river rises on Campston Hill, northeast of Abergavenny. It flows southwards until Llanvapley, where it turns east. About so ...

(R) ** River Monnow (Afon Mynwy) (R) *** River Dore (L) ****

Dulas Brook Dulas may refer to: Places *Dulas, Anglesey, Wales **Dulas Bay, nearby * Dulas, Herefordshire, England Rivers *Afon Dulas, two rivers (North Dulas and South Dulas), tributaries of the Afon Dyfi in Mid Wales *Afon Dulas, Llanidloes, a headwater tr ...

(R) ****

Worm Brook Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and no eyes (though not always). Worms vary in size from microscopic to over in length for marine polychaete wo ...

(L) ***

(R) ***

Olchon Brook Olkhon ( rus, Ольхо́н, also transliterated as Olchon; bua, Ойхон, ''Oikhon'') is the third-largest lake island in the world. It is by far the largest island in Lake Baikal in eastern Siberia, with an area of . Structurally, it const ...

(R) *** Escley Brook (L) ** River Lugg (L) (Afon Llugwy) *** River Frome (L) *** River Kenwater *** River Arrow (R) ****

Cynon Brook Cynon may refer to: Cynon Valley * Cynon Valley, one of the South Wales Valleys * River Cynon, the river which gives its name to the Cynon Valley * Rhondda Cynon Taf, an administrative area in Wales created through the merger of the former district ...

*****

Gilwern Brook Gilwern is a village within the Brecon Beacons National Park in Monmouthshire, Wales. Historically in Brecknockshire, it extends to either side of the River Clydach on the south side of the Usk valley. Its position beside the Monmouthshire and ...

**** Gladestry Brook **

(R) ** Afon Llynfi (R) ***

River Ennig A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of ...

(R) *** Dulas (L) **** Triffrwd (L) ** Bachawy (L) ** Afon Edw (L) ** Duhonw (R) ** Afon Irfon (R) ***

Afon Chwerfri This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) *** Dulas (L) *** Afon Cammarch (L) *** Afon Dulas (R) *** Afon Gwesyn (L) **

(L) **

River Ithon A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...

(L) (Afon Ieithon) *** Dulas (R) ***

Clywedog Brook Clywedog may refer to: * Afon Clywedog, a tributary of the River Severn at Llanidloes * River Clywedog, a tributary of River Dee near Wrexham * A tributary of the Afon Wnion in Gwynedd * Clywedog Reservoir, a reservoir in Powys * River Clywedog, De ...

(R) ***

Afon Aran This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(L) *** Camddwr (L) ** Afon Elan (R) *** Afon Claerwen (R) **** Rhiwnant (R) **** Afon Arban (R) ****

Afon Claerddu This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) *** Afon Gwngu (R) **

Afon Marteg The Afon Marteg is a river in Powys, Wales. It is about 15 km long, flowing roughly south-west to join the Wye at Pont Marteg (grid reference SN952714) about 5 km above Rhayader. Fishing is available, with appropriate permits, for b ...

(L) ** Afon Bidno (L) **

Afon Tarennig This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an ups ...

(R)

Severn catchment

With the exception of a small part of the Rea Brook, all tributaries of the Severn downstream of the confluence of the Severn and the Vyrnwy are wholly in England. For details see List of rivers of England. * River Severn (Afon Hafren),

Bristol Channel The Bristol Channel ( cy, Môr Hafren, literal translation: "Severn Sea") is a major inlet in the island of Great Britain, separating South Wales from Devon and Somerset in South West England. It extends from the lower estuary of the River Seve ...

(Mor Hafren) ** Rea Brook (R) (small parts of upper catchment in Wales) ** River Vyrnwy (L) (Afon Efyrnwy) (lowermost section in England) *** Afon Tanat (L) (lowermost section in England) **** Cynllaith (L) (part forms the border between Wales and England) *****

Afon Ogau This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

****

(L) ****

Afon Rhaeadr The River Rhaeadr ( cy, Afon Rhaeadr) is a river in Wales. It starts at the Pistyll Rhaeadr waterfall a few miles from the village of Llanrhaeadr-ym-Mochnant, where the Afon Disgynfa falls over a 240-foot (73 m) cliff-face, after which the riv ...

(L) **** Afon Eirth (L) *** Afon Cain (L) **** Nant Fyllon (Ls) **** Nant Alan (Rs) *** Afon Banwy (R) (a.k.a. Afon Einion) ****

(R) ****

(R) **** Afon Twrch (L) **

Maerdy Brook Maerdy (, cy, Y Maerdy) is a village and community (and electoral ward) in the county borough of Rhondda Cynon Taf, and within the historic county boundaries of Glamorgan, Wales, lying at the head of the Rhondda Fach Valley. History "Maerdy" i ...

(L) ** New Cut/Guilsfield Brook (L) ** Luggy Brook (L) ** Camlad (R) (partly in England) **

River Rhiw The River Rhiw ( cy, Afon Rhiw meaning 'slope river' or 'stream river') is a short river in the north of Powys in Wales. Two headwater tributaries both named Afon Rhiw flow east to join at Dwyrhiew and then continue in a generally easterly direc ...

(Afon Rhiw) (L) *** Afon Rhiw (north fork) (Rs) *** Afon Rhiw (south fork)(Ls) ** Llifior Brook (L) ** The Mule (R) (Afon Miwl) **

Bechan Brook Winand Kiran Madhankumar Bechan (born 12 September 1982), simply known as Kiran Bechan, is a Dutch former professional footballer who played as a midfielder. Club career Bechan was a product of the Ajax football academy, which he joined at under ...

(L) **

Mochdre Brook Mochdre may refer to: *Mochdre, Conwy, north Wales *Mochdre, Powys Mochdre () is a small village and larger community in Montgomeryshire, Powys, Wales. The community includes Penstrowed (which claims to be the smallest hamlet in Wales) and th ...

(R) ** Nant Rhyd-ros lan?? ** Afon Carno (L) ***

Afon Cerniog This is a list of rivers of Wales, organised geographically. It is taken anti-clockwise from the Dee Estuary to the M48 Bridge that separates the estuary of the River Wye from the River Severn. Tributaries are listed down the page in an upstrea ...

(R) *** Afon Cledan (R) ** Afon Trannon (L) ***

(R) ****

Colwyn Brook Colwyn was a local government district with borough status from 1974 to 1996, being one of six districts in the county of Clwyd, north-east Wales. History The borough was created on 1 April 1974, under the Local Government Act 1972. It covered ...

(L) ** Nant Feinion (R) ** Wigdwr Brook (L) ** Afon Clywedog (L) *** Afon Biga (R) (flows into Clywedog Reservoir) ***

(R) (flows into Clywedog Reservoir) ** Afon Dulas (R) *** Afon Brochan (L) *** Nant Cydros (R) *** Rhydyclwydau Brook (R)

Longest rivers in Wales

This is a table of the longest rivers wholly or partially in Wales.Encyclopædia Britannica. 1911. "Wales" Rivers only partly in Wales are included in this table in ''italics''. Note that river lengths given by different authorities vary due to the different ways in which the measurement is made or indeed estimated. That rivers are partly

fractal In mathematics, a fractal is a geometric shape containing detailed structure at arbitrarily small scales, usually having a fractal dimension strictly exceeding the topological dimension. Many fractals appear similar at various scales, as illu ...

in nature accounts for some variation and lengths can also vary slightly over time as meanders expand or are cut off where rivers run through broad flood-plains.

References

{{Authority control Wales Rivers of Wales Wales

Mainland rivers flowing into Liverpool Bay

Dee catchment

Clwyd catchment

Conwy catchment

Simple coastal catchments

Aber catchment

Ogwen catchment

Cegin catchment

Adda catchment

Isle of Anglesey rivers

Minor coastal catchments

Crigyll catchment

Ffraw catchment

Cefni catchment

Braint (i) catchment

Braint (ii) catchment

Seiont catchment

Gwyrfai catchment

Simple coastal catchments

Rivers flowing into Cardigan Bay

Daron catchment

Soch catchment

Rhyd-hir catchment etc

Dwyfor catchment

Glaslyn catchment

Artro catchment

Ysgethin catchment

Mawddach catchment

Dysynni catchment

Dyfi catchment

Clarach catchment

Rheidol catchment

Ystwyth catchment

Wyre catchment

Cledan catchment

Arth catchment

Aeron catchment

Coastal streams

Teifi catchment

Nyfer catchment etc

Minor coastal catchments

Rivers flowing to west Pembrokeshire coast

Minor catchments

Cleddau catchment

Rivers flowing into the Bristol Channel The Bristol Channel ( cy, Môr Hafren, literal translation: "Severn Sea") is a major inlet in the island of Great Britain, separating South Wales from Devon and Somerset in South West England. It extends from the lower estuary of the River Seve ...

Taf catchment

Towy catchment

Gwendraeth catchment

Lliedi catchment

Loughor catchment

Clyne catchment

Tawe catchment

Neath catchment

Afan catchment

Kenfig catchment

Ogmore catchment

Col-huw catchment

Thaw catchment

Cadoxton catchment

Taff catchment

Rhymney catchment

Usk catchment

Wye catchment

Severn catchment

Longest rivers in Wales

See also

References

Rivers flowing into the
Bristol Channel The Bristol Channel ( cy, Môr Hafren, literal translation: "Severn Sea") is a major inlet in the island of Great Britain, separating South Wales from Devon and Somerset in South West England. It extends from the lower estuary of the River Seve ...