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Cof Cymru: National Historic Assets of Wales · Wales

Aberdulais Basin at the head of the Tennant Canal

Tonna, Neath Port Talbot, Wales

The record

Designation
Listed building, Grade II
Broad class
Transport
Date of designation
29 January 1980
Locality
Aberdulais
Community
Tonna
Unitary authority
Neath Port Talbot
Country
Wales
Coordinates
51.67967, -3.77493
Cadw reference
11839

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1636 "Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ..." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

Approximately 0.4km N of Tonna village on the E side of the River Neath and W of the Neath Canal.

The Tennant Canal, engineered by William Kirkhouse, was begun in 1821 and opened in 1824 from the Neath Canal at Aberdulais to Port Tennant, Swansea. The interchange basin is at the head of the Tennant Canal and linked the Neath and Tennant Canals. A dry dock was also built on its SE side. Traffic on the Tennant Canal declined from the 1860s due to competition with railways but the canal did not close to commercial traffic until 1934.

An irregular shaped, stone-lined basin approximately 100m x 20m, part filled with reeds and rushes at the time of inspection (October 1999). At the NE end it joins the Neath Canal (beneath Pont Gam), while the SW end, now infilled, joined the Aberdulais Aqueduct. A concrete slipway on the SE side originally connected with a dry dock (now infilled).

Listed for its industrial archaeological interest as an early C19 canal structure, and for group value with other associated listed items on the Tennant Canal at Aberdulais.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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