River Llynfi

River Llynfi (Afon Llynfi)
River
River Llynfi. From the bridge at Pont Rhyd-y-cyff
Country Wales
Tributaries
 - left Nant Cwm-du, Nant Cedfyw
 - right Nant Crynwydd, Nant Sychbant, Nant y Gadlys
Cities Blackmill, Brynmenyn
Source
 - location Craig Ogwr
Mouth
 - location Aberkenfig

The River Llynfi, otherwise referred to as the Llynfi River or Afon Llynfi in Welsh,[1] is one of three main tributaries of the River Ogmore or Afon Ogwr.

It runs for around 10 miles from its source north of Maesteg and flows generally southwards through the Llynfi Valley to the confluence with the River Ogmore (Afon Ogwr) and the River Garw at Aberkenfig (Abercynffig). Its main tributaries are Nant Cwm-du and Nant Cedfyw which enter on its left bank and Nant Crynwydd, Nant Sychbant and Nant y Gadlys on its right bank.[2]

The Llynfi has endured a long period of industrialisation and coal mining especially around Maesteg. There was an ironworks and brick works at Tondu.

Industrialisation and poor provision of sewerage led to severe water pollution of the river. In the second half of the 20th century, whilst the impact of coal mining diminished, new industries such as cosmetics and toiletries, paper making and sewage disposal continued to maintain the Llynfi in an almost abiotic condition. Strong enforcement action against a number of industries helped to ensure a steady improvement in quality into the 21st century.

References

  1. picture
  2. Ordnance Survey Explorer maps 151 'Cardiff & Bridgend/Caerdydd & Phen-y-bont-ar-Ogwr' and 166 'Rhondda & Merthyr Tydfil/Merthyr Tudful'

Coordinates: 51°32′37″N 3°35′29″W / 51.54361°N 3.59139°W / 51.54361; -3.59139

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