Cadoxton River

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Cadoxton River
Cadoxton Brook
Cadoxton River just north of Dinas Powys, Wales.jpg
The river in the area known as the Millfields, near Dinas Powys
Native nameAfon Tregatwg (Welsh)
Location
Country Wales, United Kingdom
Region South Wales
County Vale of Glamorgan
Cities Michaelston-le-Pit, Dinas Powis, Barry, The Bendricks, Vale of Glamorgan
Physical characteristics
Source 
  location Michaelston-le-Pit, Vale of Glamorgan, Wales
  coordinates 51°26′46″N3°13′09″W / 51.4460°N 3.2192°W / 51.4460; -3.2192
Mouth Bristol Channel
  coordinates
51°23′43″N3°14′58″W / 51.3954°N 3.2495°W / 51.3954; -3.2495 Coordinates: 51°23′43″N3°14′58″W / 51.3954°N 3.2495°W / 51.3954; -3.2495
Length8.0 km (5.0 mi)
Discharge 
  location The Bendricks, Vale of Glamorgan

The Cadoxton River (Welsh : 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.

Contents

Course

The water course becomes known as the Cadoxton just north of Dinas Powys village near the hamlet of Michaelston-le-Pit, at the confluence of the Wrinstone Brook and the Bullcroft Brook. From there, it flows in a generally south-westerly direction through Dinas Powys, along the route of the A4055, or Cardiff Road, towards the town of Barry. Once at Barry, it flows through an artificial channel towards its manmade estuary at The Bendricks, Vale of Glamorgan. [1]

History

Although the river is but a stream today, it appeared to have had a greater flow in times gone by - large enough to appear on some maps of Britain. Some small vessels could almost reach Dinas Powys, but, like the River Thaw a few miles west, it is likely to have silted up, and the mouth became a mud channel before being redeveloped. The lower reaches of the river have been extensively modified in the past. In 1884, the Barry Railway Company began construction work on the Barry docks, which were cut into the natural estuary of the river, which was diverted away. The lower river should be tidal, but a sluice gate built at the same time as the docks keeps the water fresh.

From the 1940s through to the 1970s, the bottom stretches of the Cadoxton were polluted by effluents from the many chemical plants nearby. However, due to environmental regulation the water quality is now improving and the river supports fish, including trout.

On 19 April 2005, most of the river's trout were killed when dangerous pollutants leaked from a vehicle travelling to the Barry chemical plants, seeping into Bullcroft Brook and thus damaging the ecosystem. 183 dead fish were found in a 5 km stretch of the river and the company, a division of Calor Gas Ltd, was fined £20,000. [2]

Etymology

Despite its name, the river does not flow through the town of Cadoxton any more. In the past, however, it did flow through the centre of Barry. At high tide, small boats could sail up into Barry. Originally it met the sea at the eastern edge of Barry Island, where the present dock entrance is situated today. [3] Barry Island ceased to be an island when the river was diverted away and the docks constructed.

Tributaries

Along its short course, a few smaller streams join the river.

Bullcroft Brook

Bullcroft Brook rises near Caerau, south of the A4232 road. It is just under 2 miles long, and flows southward to join the Wrinstone Brook at Michaelston-le-Pit. On 19 April 2005 the stream was polluted when a vehicle carrying styrene monomer lost 620 litres of the chemical, which heavy rains carried to Bullcroft Brook. The trout in the river system suffered as a result. [2]

Wrinstone Brook

Wrinstone Brook is the larger of the two main tributaries of the river, flowing eastwards for 3 miles. It rises from multiple sources around Wenvoe and flows near the tiny cluster of houses at Wrinstone. It flows through a wooded ravine for much of its course, and just upstream from the confluence with Bullcroft Brook, several weirs dam the river, creating many ponds. These are known locally as the Seven Lakes, or alternatively the Salmon Leaps, despite the fact that they are used as a trout farm. [4]

East Brook

The East Brook is a smaller tributary of the river. It starts at Llandough, flowing for 2 miles before joining the Cadoxton south of the A4055 at Dinas Powys. It flows through the area of Dinas known as the Murch, and also the area called Eastbrook, to which it gave its name.

Coldbrook

The Coldbrook rises in the Merthyr Dyfan area of Barry, and is 4 miles long. It has a few small tributaries, the largest of which is called the Nant yr Argae, which in turn starts at St Andrews Major and has a length of 2 miles. The Coldbrook meets the Cadoxton east of Palmerstown, Barry, in some fields in the locality known as Biglis. [5] Another, much smaller stream with a length of about 1 kilometre also drains this area, and converges with the Colbrook just upstream from where it joins the Cadoxton.

Sully Brook

Sully Brook is one of the largest tributaries of the river. Its source is just west of Penarth. It flows southward through the Cosmeston Lakes Country Park. Here it meets a much smaller, unnamed stream, and turns westward. It finally joins with the Cadoxton near Barry docks. Like the Cadoxton, it was also diverted slightly to cool the new chemical plants.

Flooding

According to the Environment Agency, in the October floods of 1998 only six properties at Dinas Powys were affected. Flooding was caused by the floodwater overtopping the banks of the Cadoxton River among others and ordinary watercourses, restrictions to flow in channels and surcharging of drains. [6]

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References

  1. Cadoxton River [ permanent dead link ]
  2. 1 2 "Firm fined £20,000 for pollution".
  3. "Tom Clemett's History of Barry". Archived from the original on 20 July 2011. Retrieved 14 April 2011.
  4. http://www.southeastwalesriverstrust.org.uk/rivers/cadoxton_river.htm [ permanent dead link ]
  5. "Tom Clemett's History of Barry". Archived from the original on 20 July 2011. Retrieved 14 April 2011.
  6. 1998 Flooding