Clydach Aqueduct on Tennant Canal is a Grade II listed building in the Neath Port Talbot local planning authority area, Wales. First listed on 22 December 2003. Aqueduct.
Clydach Aqueduct on Tennant Canal
- WRENN ID
- unlit-lead-dock
- Grade
- II
- Local Planning Authority
- Neath Port Talbot
- Constituency
- Neath and Swansea East MP: Carolyn Harris (Lab)
- Country
- Wales
- Date first listed
- 22 December 2003
- Type
- Aqueduct
- Address
- Clydach Aqueduct on Tennant Canal, Neath Abbey, Dyffryn Clydach
- OS grid reference
- SS 738 972
- Coordinates
- 51.66023, -3.82485
- Source
- Cadw listing
Description
The Clydach Aqueduct on the Tennant Canal is a canal aqueduct constructed from rubble stone. It features two segmental arches made with thin stone voussoirs and a cutwater between them. On the south side, there are rubble stone parapets topped with curved slag blocks at the center, and the abutments are splayed out on each side in smooth quadrant curves. To the west, there is a sluice gate accompanied by sandstone steps that lead at a right angle to the river, supported by rusticated pillars. The north side lacks parapets and has been heavily repaired with cement.
Local climate
Clydach Aqueduct on Tennant Canal 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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Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
- 1 Upper Clydach Aqueduct and Overflow on Swansea Canal
- 2 Former Kidwelly & Llanelly Canal aqueduct (also known as Glanstony Aqueduct)
- 3 Abercarn Aqueduct and Bridge (partly in Abercarn Community)
- 4 Clydach Brook aqueduct over former Vale of Neath Railway
- 5 Abercarn Aqueduct and bridge (partly in Crosskeys Community)
this building 1 similar nearby listed buildings
Nearby listed buildings
- Bridge over River Clydach to S of Neath Abbey
- Bridge over Tennant Canal to S of entrance to Neath Abbey
- The Smiths Arms
- Former engine manufacturing building at former Neath Abbey Ironworks
- No. 2 Blast Furnace at former Neath Abbey Ironworks
- Church of Saint John the Baptist
- No. 1 Blast Furnace at former Neath Abbey Ironworks
- Bridge over Tennant Canal N of former Mines Royal Copper Works
- Neath Abbey Railway Viaduct (partly in Blaenhonddan community)
- Neath Abbey Railway Viaduct (partly in Dyffryn Clydach community)