TreeAlive
‹ Cof Cymru: National Historic Assets of Wales, Wales

Cof Cymru: National Historic Assets of Wales · Wales

Upper Clydach Aqueduct and Overflow on Swansea Canal

Pontardawe, Neath Port Talbot, Wales

The record

Designation
Listed building, Grade II
Broad class
Water Supply and Drainage
Date of designation
26 October 1979
Community
Pontardawe
Unitary authority
Neath Port Talbot
Country
Wales
Coordinates
51.71955, -3.85267
Cadw reference
11199

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).

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

Late C18 aqueduct carrying Swansea Canal built 1794-99 over the Upper Clydach river, one of six single arch bridges on the canal. On canal N of aqueduct is a feeder entry from river, the feeder once flowed into a town loading dock to the N.

Canal aqueduct over river, rubble stone segmental arch with voussoirs, of c. 7.5 m span and about 1.7 m height, with 2 overflows on NW side. Parapet of squared stone with copper-slag copings on SE side retaining flanking buttresses but with patching in blue and red bricks and cement block on N half of face. C20 railing between footpath and canal. NW side partly encroached by later bank revetment walls and with brick patching, but retaining 2-bay overflow chamber in working order with stop planks and added footbridge over.

Included as a major feature of one of the most important canals in Wales.

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
See your own family's places on a living map