The Afon Lwyd or Afon Llwyd ( en, 'grey river') is a long river in

south-east Wales South East Wales is a loosely defined region of Wales generally corresponding to the preserved counties of Mid Glamorgan, South Glamorgan and Gwent. Highly urbanised, it includes the cities of Cardiff and Newport as well as large towns in t ...

which flows from its source northwest of

Blaenavon Blaenavon ( cy, Blaenafon) is a town and community in Torfaen county borough, Wales, high on a hillside on the source of the Afon Lwyd. It is within the boundaries of the historic county of Monmouthshire and the preserved county of Gwent. Th ...

, through

Abersychan Abersychan is a town and community north of Pontypool in Torfaen, Wales, and lies within the boundaries of the historic county of Monmouthshire and the preserved county of Gwent. Abersychan lies in the narrow northern section of the Afon L ...

, Pontnewynydd,

Pontypool Pontypool ( cy, Pont-y-pŵl ) is a town and the administrative centre of the county borough of Torfaen, within the historic boundaries of Monmouthshire in South Wales. It has a population of 28,970. Location It is situated on the Afon Lwyd r ...

, Llanfrechfa and

Cwmbran Cwmbran ( ; cy, Cwmbrân , also in use as an alternative spelling in English) is a town in the county borough of Torfaen in South Wales. Lying within the historic boundaries of Monmouthshire, Cwmbran was designated as a New Town in 1949 to prov ...

before flowing, at

Caerleon Caerleon (; cy, Caerllion) is a town and community in Newport, Wales. Situated on the River Usk, it lies northeast of Newport city centre, and southeast of Cwmbran. Caerleon is of archaeological importance, being the site of a notable Roman ...

, into 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 ...

, which subsequently flows 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 Se ...

to the south of Newport. The river was severely affected by pollution from industry and mine discharge, and fly tipping, but during the 1980s efforts were made to improve water quality and improve fish stocks. To aid this, the

Environment Agency Wales Environment Agency Wales () was a Welsh Government sponsored body that was part of the Environment Agency of England and Wales from 1996 to 2013. Its principal aims were to protect and improve the environment in Wales and to promote sustainable ...

built a fish ladder at Pontymoile in 2010 enabling fish to ascend past the weir there. By late 2011 it was claimed that the river was in its cleanest state since

medieval In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire a ...

times. Historically the river has also been known as the

Torfaen Torfaen (; cy, Torfaen ) is a county borough in the south-east of Wales. Torfaen is bordered by the county of Monmouthshire to the east, the city of Newport to the south, and the county boroughs of Caerphilly and Blaenau Gwent to the south-w ...

– meaning 'breaker of stones' – which gives some indication of the force of the river during surges. Although this name is no longer in use for the river, it is still in common use as the name for the local authority, Torfaen County Borough Council.

Flooding risk

The geography of the river's location, as well as how local towns affect run off, has meant that during heavy periods of rainfall the river can quickly become a torrent and localised flash floods are not uncommon. The last major flood of the river occurred in the 1930s.

Conservation projects

Beginning in March 2010, the Friends of Afon Llwyd (FOAL) project is a partnership between Torfaen County Borough Council and two local angling clubs in Cwmbran and Pontypool aiming to improve the river as a habitat for

salmon Salmon () is the common name for several commercially important species of euryhaline ray-finned fish from the family Salmonidae, which are native to tributaries of the North Atlantic (genus '' Salmo'') and North Pacific (genus '' Onco ...

sea trout Sea trout is the common name usually applied to anadromous (sea-run) forms of brown trout (''Salmo trutta''), and is often referred to as ''Salmo trutta'' morpha ''trutta''. Other names for anadromous brown trout are sewin (Wales), peel or peal ...

and

brown trout The brown trout (''Salmo trutta'') is a European species of salmonid fish that has been widely introduced into suitable environments globally. It includes purely freshwater populations, referred to as the riverine ecotype, ''Salmo trutta'' morp ...

. The

Wye and Usk Foundation The Wye and Usk Foundation is an environmental charity based in Talgarth, Powys in Wales which seeks to secure and improve the natural environment of the River Wye and River Usk for the benefit of local communities, anglers and others. Founded in 19 ...

also received £130,000 of funding to remove invasive weeds, manage bank erosion, create fish leaps, drop weirs and improve community engagement with the river both by fishing and other means. Nearly £750,000 has and will be spent on improving the river. A major effort of the FOAL project has been to lower a weir that blocked upstream fish migration at Ty Nant Ddu, Pontypool. In 2008, salmon were spotted here. Additionally, similar efforts were made at the weir located near Cwmavon. To further improve fish stocks (especially salmonid) 'V' weirs were constructed to trap gravel and create suitable spawning habitats. Towards the river's source in Blaenavon, Conservation Volunteers and the Forgotten Landscapes Partnership carried out 're-greening' activities along the river where it runs through the Blaenavon World Heritage Site.

American crayfish infestation

The river has been invaded by the American signal crayfish, which is affecting the native protected

white-clawed crayfish ''Austropotamobius pallipes'' is an endangered European freshwater crayfish, and the only crayfish native to the British Isles. Its common names include white-clawed crayfish and Atlantic stream crayfish. Distribution It is found from the east ...

. Not only does the invading species fight for food resources, but it also carries crayfish plague, to which the native species has no immunity.

Afon Lwyd Trail

The Afon Lwyd Trail is a shared-use path running from

Blaenavon Ironworks Blaenavon Ironworks is a former industrial site which is now a museum in Blaenavon, Wales. The ironworks was of crucial importance in the development of the ability to use cheap, low quality, high sulphur iron ores worldwide. It was the site o ...

in the north via Pontypool to Cwmbran in the south. The path initially follows the Monmouthshire and Brecon Canal followed by a section on the former Pontypool to Blaenavon railway. The trail incorporates two

National Cycle Network The National Cycle Network (NCN) is the national cycling route network of the United Kingdom, which was established to encourage cycling and walking throughout Britain, as well as for the purposes of bicycle touring. It was created by the cha ...

routes: 49 and 492.

References

External links