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Cof Cymru: National Historic Assets of Wales · Wales

Water Gauge House on Weir below Lake Vyrnwy Dam

Llanwddyn, Powys, Wales

The record

Designation
Listed building, Grade II
Broad class
Water Supply and Drainage
Date of designation
26 February 2003
Locality
Lake Vyrnwy Dam
Community
Llanwddyn
Unitary authority
Powys
Country
Wales
Coordinates
52.75991, -3.45541
Cadw reference
80938

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 1608 "(13) Cambriae Typus." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

On the south bank of the River Vyrnwy about 200 m below the dam, beside a public path.

A water gauge house on the weir beneath the Vyrnwy dam, part of the original reservoir works.

A timber-framed apparatus house about 2 m by 3 m, with a tile roof. Timber frame painted brown with white panels. Two-light mullion and transom windows on all four faces; boarded door in addition on the south face. The framing stands on two courses of red plinth bricks and a rock-faced slate base.

A small building forming part of the original Vyrnwy Dam works, in a picturesque style reflecting the architecture of the new Llanwddyn village.

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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