Aqueduct SW of Church of St Cynllo is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 28 February 2005. Aqueduct.
Aqueduct SW of Church of St Cynllo
- WRENN ID
- gilded-copper-bittern
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 28 February 2005
- Type
- Aqueduct
- Address
- Aqueduct SW of Church of St Cynllo, Nantmel
- OS grid reference
- SO 033 663
- Coordinates
- 52.28635, -3.41825
- Source
- Cadw listing
Description
This is a single-span aqueduct located southwest of the Church of St Cynllo, designed to cross a small stream. It is constructed from coursed, rock-faced stone with freestone dressings. The aqueduct features a small round opening that has a rusticated surround. There are two rock-faced buttresses on each side, with the outer buttresses nearly concealed by the steep bank. Above these buttresses, the parapet is made up of panelled freestone piers and a freestone coping. The outer sides of the aqueduct are fitted with iron railings and gates that provide access to the deck, where the conduit is buried beneath a layer of gravel.
Local climate
Aqueduct SW of Church of St Cynllo sits in a wetter-than-average part of the UK, with an average of 1,090 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 78% of listed buildings.
It experiences an average of 51 freeze-thaw cycles a year, more than 92% of listed buildings. Of these, 29 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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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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