Aqueduct and Stiles at SW 419371 is a Grade II listed building in the Cornwall local planning authority area, England. Aqueduct.

Aqueduct and Stiles at SW 419371

WRENN ID
turning-loggia-ridge
Grade
II
Local Planning Authority
Cornwall
Constituency
St Ives MP: Andrew George (LD)
Country
England
Type
Aqueduct
Address
Aqueduct and Stiles at SW 419371, Zennor
OS grid reference
SW 429 371
Coordinates
50.17814, -5.60146
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The aqueduct and stiles, dating from the early 19th century, are constructed from dressed granite moorstone and granite rubble. The structure features a long rectangular track with high side walls, a central leat, and a gateway with a stile at each end. At the lower (eastern) end, water was originally discharged into the leat that supplied power for the nearby smelting works. Near the lower stile, there is an additional gateway leading into a field, which also has a stile beside it; this is included in the listing. The stiles are designed as stepped stiles, and the gate piers are made of granite monoliths.

Local climate

Aqueduct and Stiles at SW 419371 sits in a wetter-than-average part of the UK, with an average of 970 mm of rain a year. This makes it wetter than 75% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.

It experiences an average of 1 freeze-thaw cycle a year, fewer than 99% of listed buildings. Average temperatures at this location have risen by 0.2°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.

More on this building

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  • Detailed attributes — period, style, materials, features
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  • 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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Nearby listed buildings

  1. Bosigran Smelting Works Grade II 67 m
  2. House at SW 41923701 Grade II 102 m
  3. House at SW 41933701 Grade II 103 m
  4. Lower Porthmeor Farmhouse, Rear Courtyard Walls and Front Garden Walls Grade II 149 m
  5. Stables Immediately North North West of Lower Porthmeor Farmhouse Grade II 155 m
  6. Farm Buildings North of Lower Porthmeor Farmhouse Grade II 173 m
  7. Building, Possibly Tack House, at Rear of Stable South West of Higher Porthmeor Farmhouse Grade II 279 m
  8. Stile at SW 417370 Grade II 280 m
  9. Higher Porthmeor Old Farmhouse Grade II 305 m
  10. Higher Porthmeor Farmhouse Grade II 311 m