River Mawddach

River Mawddach
Afon Mawddach

River Mawddach looking west to Barmouth Bay
Mouth Barmouth
Basin countries Wales

The River Mawddach (Welsh: Afon Mawddach) is a river in North Wales which has its source in a wide area SH820300 north of Dduallt in Snowdonia. The river is much branched and 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 main tributaries starting in the west and working clockwise are:

  • Afon Cwm Mynach which drains Llyn Cwm Mynach on the Rhinogydd.
  • Afon Gamlan which joins at Ganllwyd after following a tumultuous valley through ancient Oak woods before descending towards the main river down Rhaeadr Ddu (Black waterfalls). This valley has one of the more important moss and liverwort communities in the southern UK.
  • Afon Eden, its headwaters known as Afon Crawcwellt- a large tributary draining from below Llyn Trawsfynydd and closely following the A470 through the Coed-y-Brenin forest. This tributary has been severely impacted by industrialisation in the past including Gold mining and its use as an ordnance range.
  • Afon Gain - a large tributary has also been impacted by similar problems to the Eden and is very acidic and peaty.
  • Afon Wen which joins south of the Gain is similar but smaller.
  • Afon Wnion is a major tributary joining from the east and which drains a large area out towards Aran Fawddwy

Below Dolgellau the river enters a wide and sandy estuary of great beauty. At its mouth is the town of Barmouth and its railway bridge.

Gold panning in the River Mawddach in Coed-y-Brenin

The Mawddach has been the site of significant industrialisation and land management. Gold mining and subsequently gold panning have had major impacts but forestry, the preparation of animal skins, the storage of old munitions and the use of hill-sides as artillery ranges have all added to the legacy of pollution. The river is also very flashy - prone to very rapid rise and fall in level depending on rainfall. Rainfall can also be very heavy and it falls on very base-poor soils leading to episodes of strongly depressed pH. Despite this, the river sustains an important salmon and trout fishery and the countryside through which it flows is some of the most spectacular and scenic in the UK.

The southern bank of the Mawddach estuary, along which used to run a section of the GWR branch line from Ruabon to Barmouth, has now been designated the Mawddach Trail, an 8-mile cycle path running from Dolgellau to Morfa Mawddach, at the south side of the Barmouth railway bridge. It is managed by the Snowdonia National Park Authority as a leisure route for walkers and cyclists, and is part of the Sustrans Cross-Wales Cycling Route.

The estuary of the Mawddach was a great centre of ship building in the 18th century and probably for some centuries before. There is no evidence remaining of this activity in the estuary today.

Panorama of River Mawddach towards Penmaenpool and Cadair Idris

External links

Coordinates: 52°51′16″N 3°45′14″W / 52.85452°N 3.75388°W / 52.85452; -3.75388

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Mawddach — Goldwäscher im Waldgebiet Coed y BreninVorlage:Infobox Fluss/KARTE fehlt Daten …   Deutsch Wikipedia

  • Dolgellau — Coordinates: 52°44′N 3°53′W / 52.74°N 3.88°W / 52.74; 3.88 …   Wikipedia

  • Barmouth — infobox UK place country=Wales welsh name=Abermaw constituency welsh assembly= map type=Abermaw official name=Barmouth (Abermaw) latitude=52.722 longitude= 4.055 unitary wales=Gwynedd lieutenancy wales=Gwynedd constituency westminster=Meirionnydd …   Wikipedia

  • Welsh gold — is highly prized because of its origin and scarcity, and occurs naturally in two distinct areas of Wales. One area is in North Wales in a band stretching from Barmouth, past Dolgellau and up towards Snowdonia. In South Wales it is found in a… …   Wikipedia

  • Cambrian Line — The Cambrian Line is a railway from Shrewsbury (in Shropshire, England) to Welshpool, Aberystwyth and Pwllheli. The railway runs first through the central part of Wales and then along the coast of Cardigan Bay. The railway is scenic, with parts… …   Wikipedia

  • Portal:Wales — Wikipedia portals: Culture Geography Health History Mathematics Natural sciences People Philosophy Religion Society Technology …   Wikipedia

  • List of toll bridges — The following is a list of toll bridges. Toll bridges are bridges upon which traffic may pass upon payment of a fee, or a toll . This list is intended to be a subset of List of toll roads.Australia*Sydney Harbour Bridge * Gateway Bridge, Brisbane …   Wikipedia

  • Fairbourne — infobox UK place population = 1,325 country = Wales welsh name= constituency welsh assembly= map type= official name= Fairbourne latitude=52.69689 longitude= 4.05241 unitary wales= Gwynedd lieutenancy wales= Gwynedd constituency westminster=… …   Wikipedia

  • Metal mining in Wales — affected large areas of what are now very rural parts of Wales and left behind a legacy of contaminated waste heaps and a very few ruined buildings. There are a number of areas that have been mined for a variety of metals. Contents 1 Lead and… …   Wikipedia

  • Clywedog — may refer to: River Clywedog, a tributary of River Dee near Wrexham A tributary of the River Mawddach Clywedog Reservoir, a reservoir in the Welsh county of Powys River Clywedog, Denbigh, a tributary of the River Clwyd See also Clydach… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.