Rhymney River

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The Rhymney Valley, north of Bargoed Rhymney Valley - geograph.org.uk - 1049228.jpg
The Rhymney Valley, north of Bargoed
The river as it passes through Machen Rhymney River, Machen - geograph.org.uk - 307161.jpg
The river as it passes through Machen
The river as it passes through Ystrad Mynach The River Rhymney, at Ystrad Mynach - geograph.org.uk - 372457.jpg
The river as it passes through Ystrad Mynach
The river in its lower reaches, as it passes through Llanrumney on the eastern outskirts of Cardiff River Rhymney Cardiff.JPG
The river in its lower reaches, as it passes through Llanrumney on the eastern outskirts of Cardiff
Mouth of the river, as it reaches the Severn Estuary just east of Cardiff Afon Rhymni meets the River Severn - geograph.org.uk - 582251.jpg
Mouth of the river, as it reaches the Severn Estuary just east of Cardiff

The Rhymney River (Welsh : Afon Rhymni) is a river in the Rhymney Valley, South Wales, flowing through Cardiff into the Severn Estuary. The river formed the boundary between the historic counties of Glamorgan and Monmouthshire until in 1887, the parishes east of the river, Rumney and St Mellons, were transferred from the jurisdiction of Newport, to Cardiff in Glamorgan. [1]

Contents

The river flows south from its source near Rhymney through New Tredegar, Bargoed, Ystrad Mynach, Llanbradach to Caerphilly at the southern end of the Rhymney Valley. Then past Bedwas, Trethomas, Machen, Draethen, Llanrumney and Rumney and its estuary into the River Severn.

The Rhymney Valley was created as a glacial valley. Sourced within the valley, on the southern edge of the Brecon Beacons, the Rhymney River descends steeply through the town of New Tredegar towards Ystrad Mynach, and then onwards south across a flat plain before entering the Severn Estuary to the east of Cardiff. The villages of Groesfaen, Deri, Pentwyn and Fochriw are located in the Darran Valley and not the Rhymney Valley, which joins the Rhymney Valley at Bargoed.

Covering a distance of 30 miles (48 km), the catchment is divided into two distinct parts: [2]

Being located in part of the South Wales coalfield and South Wales Valleys iron-producing area, the resultant black river had poor water quality through most of the 19th and 20th centuries. The river is culverted in many of its upper sections, including a tunnel under the former factory complexes in Rhymney, exiting at Pontlottyn. [3] Since the closure of the last of the coal mines in the late 1980s, the water has become much cleaner and is now full of fish and insect life and supports plenty of other wildlife. The river now supports a healthy stock of grayling and natural brown trout, and much work has been undertaken to remove former industrial restrictions on the river to allow the fish to gain access to its upper reaches. [4] The river is in the care of Natural Resources Wales and the South East Wales Rivers Trust. [2]

See also

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References

  1. ↑ "The History of Cardiff's Suburbs - The history of the suburb of Rumney". Cardiffians.co.uk. Retrieved 21 January 2015.
  2. 1 2 "Rhymney River". South East Wales Rivers Trust. Retrieved 7 May 2012.
  3. ↑ "Rhymney river tunnel". WelshCoalMines.co.uk. Retrieved 7 May 2012.
  4. ↑ "Rhymney River". South East Wales Rivers Trust. Archived from the original on 9 August 2012. Retrieved 7 May 2012.

51°29′N3°07′W / 51.483°N 3.117°W / 51.483; -3.117

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