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Cof Cymru: National Historic Assets of Wales · Wales

Caeau Weir

Esclusham, Wrexham, Wales

A Grade II listed building in Bersham, Esclusham, Wrexham, designated on 8 December 1995.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Caeau Weir, Esclusham, Wrexham, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Listed building, Grade II
Broad class
Industrial
Date of designation
8 December 1995
Locality
Bersham
Community
Esclusham
Unitary authority
Wrexham
Country
Wales
Coordinates
53.03706, -3.03915
Cadw reference
16555

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

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1795 map "To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most humbly inscribed by his obedient humble servant" (Llyfrgell Genedlaethol Cymru – The National Library of Wales).

Historical maps covering this location

  • 1795 · To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most… (Llyfrgell Genedlaethol Cymru – The National Library of Wales)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1898 · 121 Wrexham (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1898 · 121 Wrexham (Outline) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

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This record in Cadw's own full report ↗

Cadw's description

On the River Clywedog, close to Caeau Bridge, 400m approx. W of Plas Power Chapel

The origins of the weir may date back to the medieval period; the Clywedog had long been exploited as a power source prior to the establishment of an ironworks at Bersham at the end of the C17. The weir almost certainly formed part of the water power system for the ironworks during the C18, and then for Bersham Corn Mill from 1828. Its stepped profile was created some time between 1900 and 1911, perhaps to enhance its appearance as a feature within the park at Plas Power.

Stepped stonework, slightly curved in plan, with abutment walls of coursed and squared stone to either side, and a blue brick retaining wall linking the weir with Caeau Bridge to the S. A sluice gate at the top of the weir fed a leat which served the ironworks and later cornmill.

Forms a group with Caeau Bridge.

An important element in the early water-power system developed to serve the ironworks (though probably with earlier origins) and subsequently the corn mill at Bersham. The weir also forms a striking feature within Plas Power Park.

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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