Aqueduct over Dowlais Brook on Monmouthshire and Brecon Canal (partly in the Llantarnam community) is a Grade II listed building in the Torfaen local planning authority area, Wales. First listed on 30 September 2003. Aqueduct.
Aqueduct over Dowlais Brook on Monmouthshire and Brecon Canal (partly in the Llantarnam community)
- WRENN ID
- outer-frieze-indigo
- Grade
- II
- Local Planning Authority
- Torfaen
- Constituency
- Torfaen MP: Nick Thomas-Symonds (Lab)
- Country
- Wales
- Date first listed
- 30 September 2003
- Type
- Aqueduct
- Address
- Aqueduct over Dowlais Brook on Monmouthshire and Brecon Canal (partly in the Llantarnam community), Cwmbran, Cwmbran Central
- OS grid reference
- ST 290 940
- Coordinates
- 51.64038, -3.02672
- Source
- Cadw listing
Description
The aqueduct over Dowlais Brook on the Monmouthshire and Brecon Canal is a notable structure built from squared stone. It features two tunnels with segmental arched openings on either side of the canal. The aqueduct is supported by high stone embanking walls that lack parapets but include triangular piers on each side and between the tunnels. These piers have sloping tops and rise approximately 1 meter below the top of the wall. The abutments are splayed on each side. The arches are constructed with stone voussoirs that include raised keystones, and the walling is made of squared stone laid in courses. On the downstream side, the river is paved with squared stone blocks for about 6 meters, ending in a low weir.
Local climate
Aqueduct over Dowlais Brook on Monmouthshire and Brecon Canal (partly in the Llantarnam community) receives an average of 930 mm of rain a year. This makes it wetter than 71% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 72% of listed buildings.
It experiences an average of 35 freeze-thaw cycles a year, more than 55% of listed buildings. Of these, 14 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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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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