Walls surrounding Fonmon Pond including the Bridge and Weir and Well at Fonmon is a Grade II listed building in the Vale of Glamorgan local planning authority area, Wales. First listed on 30 September 2004. Bridge, weir, well.

Walls surrounding Fonmon Pond including the Bridge and Weir and Well at Fonmon

WRENN ID
other-gallery-pearl
Grade
II
Local Planning Authority
Vale of Glamorgan
Constituency
Vale of Glamorgan MP: Kanishka Narayan (Lab)
Country
Wales
Date first listed
30 September 2004
Type
Bridge, weir, well
Address
Walls surrounding Fonmon Pond including the Bridge and Weir and Well at Fonmon, Barry, Rhoose
OS grid reference
ST 047 675
Coordinates
51.39936, -3.37014
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The walls surrounding Fonmon Pond include a weir and a bridge, both constructed to manage the brook at Fonmon. The weir is located on the north side, while the bridge spans the stream entry on the south side. The pond is bordered by a low stone wall made of local rubblestone, which is laid in a more or less coursed manner on the east and west sides. The bridge features a low hump, splayed walls with rounded coping, and two small arches. The weir has an overflow situated between stepped walls on either side. On the west side, adjacent to the pond, there is a covered well or dipping place for water supply. Another roofed well is located on the opposite side of the road, which is listed separately. The water in the brook flows north, away from the nearby sea, and after passing Fonmon Castle, it veers west to join the river Thaw.

Local climate

Walls surrounding Fonmon Pond including the Bridge and Weir and Well at Fonmon sits in a wetter-than-average part of the UK, with an average of 1,160 mm of rain a year. This makes it wetter than 89% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 95% of listed buildings.

It experiences an average of 13 freeze-thaw cycles a year, fewer than 87% of listed buildings. Of these, 5 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • Detailed attributes — period, style, materials, features
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Nearby listed buildings

  1. Fonmon Well Grade II 27 m
  2. East Hall (aka Rosedene) Grade II 83 m
  3. Watchtower at Fonmon Castle Grade II* 359 m
  4. Stable Block at Fonmon Castle Grade II 444 m
  5. Retaining Walls of South Garden at Fonmon Castle Grade II 445 m
  6. Fonmon Castle Grade I 505 m
  7. Walls of Walled Gardens at Fonmon Castle Grade II 560 m
  8. Kenson Bridge Grade II 1.2 km
  9. Cliff Farmhouse Grade II 1.4 km
  10. Telephone Call-box in centre of Village at junction with Croft John Grade II 1.5 km