Nant Du Aqueduct on Swansea Canal (partly in Ystalyfera community) is a Grade II listed building in the Neath Port Talbot local planning authority area, Wales. First listed on 26 October 1979. House.
Nant Du Aqueduct on Swansea Canal (partly in Ystalyfera community)
- WRENN ID
- still-basalt-burdock
- Grade
- II
- Local Planning Authority
- Neath Port Talbot
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 26 October 1979
- Type
- House
- Address
- Nant Du Aqueduct on Swansea Canal (partly in Ystalyfera community), Ynysmeudwy, Pontardawe
- OS grid reference
- SN 741 057
- Coordinates
- 51.73642, -3.8244
- Source
- Cadw listing
Description
The Nant Du Aqueduct, located on the Swansea Canal and partly within the Ystalyfera community, is a small aqueduct oriented on a northeast-southwest axis. It is constructed of squared stone and features voussoirs that form a segmental arch, which stands approximately 0.6 metres high and spans about 4.1 metres.
Local climate
Nant Du Aqueduct on Swansea Canal (partly in Ystalyfera community) sits in one of the wettest parts of the UK, with an average of 1,380 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.
It experiences an average of 28 freeze-thaw cycles a year, fewer than 69% of listed buildings. Of these, 12 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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