Aberdulais Basin at the head of the Tennant Canal is a Grade II listed building in the Neath Port Talbot local planning authority area, Wales. First listed on 29 January 1980. Basin.

Aberdulais Basin at the head of the Tennant Canal

WRENN ID
dusk-bronze-flax
Grade
II
Local Planning Authority
Neath Port Talbot
Constituency
Neath and Swansea East MP: Carolyn Harris (Lab)
Country
Wales
Date first listed
29 January 1980
Type
Basin
Address
Aberdulais Basin at the head of the Tennant Canal, Tonna
OS grid reference
SS 773 993
Coordinates
51.67967, -3.77494
Source
Cadw listing

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

Description

The Aberdulais Basin is an irregularly shaped, stone-lined basin measuring approximately 100 meters by 20 meters. At the time of inspection in October 1999, it was partly filled with reeds and rushes. The northeast end of the basin connects to the Neath Canal, located beneath Pont Gam, while the southwest end, which has been infilled, used to connect with the Aberdulais Aqueduct. Additionally, there is a concrete slipway on the southeast side that originally linked to a dry dock, which is now also infilled.

Local climate

Aberdulais Basin at the head of the 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.

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Nearby listed buildings

  1. Pont Gam Grade II 60 m
  2. Railway bridge on NE side of Railway Tavern Grade II 77 m
  3. Aberdulais Aqueduct (partly in Blaenhonddan community) Grade II* 94 m
  4. Aberdulais Viaduct (partly in Tonna community) Grade II 126 m
  5. Aberdulais Aqueduct (partly in Tonna community) Grade II* 142 m
  6. Aberdulais Lock on Tennant Canal Grade II 156 m
  7. Lock keeper's and toll collector's office at SW end of Aberdulais Aqueduct Grade II 161 m
  8. Aberdulais Viaduct (partly in Blaenrhonddan community) Grade II 169 m
  9. Old Works Library at Aberdulais Falls Tinplate Works Grade II 185 m
  10. Former Stables at Aberdulais Falls Tinplate Works Grade II 205 m