Torcastle Aqueduct, Caledonian Canal is a Grade A listed building in the Highland local planning authority area, Scotland. First listed on 5 October 1971.
Torcastle Aqueduct, Caledonian Canal
- WRENN ID
- upper-hammer-frost
- Grade
- A
- Local Planning Authority
- Highland
- Constituency
- Inverness, Skye and West Ross-shire MP: Mr Angus MacDonald (LD)
- Country
- Scotland
- Date first listed
- 5 October 1971
- OS grid reference
- NN 131 791
- Coordinates
- 56.8661, -5.06643
- Source
- Historic Environment Scotland listing
Description
Torcastle Aqueduct, constructed around 1815 by Thomas Telford, forms a significant part of the Caledonian Canal. It comprises three parallel tunnels, each roughly 240 feet long, designed to carry the waters of the Allt Sheangain in two parallel channels beneath the Caledonian Canal. A third tunnel provides a roadway.
The aqueduct is characterised by high, semi-circular abutments built from squared and tooled rubble, topped with tooled rubble copes. These abutments flank the canal bank and each support three round-headed tunnel entrances, distinguished by triangular cutwaters. Both the water channels and roadway are paved with oblong sections of ashlar stone. The roadway serves as access to Torcastle and other buildings, situated between the River Lochy and the Caledonian Canal. The statutory address was revised in 2020, reflecting a change from the previous designation of ‘Caledonian Canal, Torcastle Acqueduct over the Allt Sheangain’.
Local climate
Torcastle Aqueduct, Caledonian Canal sits in one of the wettest parts of the UK, with an average of 2,020 mm of rain a year. This makes it wetter than 99% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 95% of listed buildings.
It experiences an average of 65 freeze-thaw cycles a year, more than 99% of listed buildings. Of these, 46 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.
More on this building
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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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- Salix House, Banavie Locks, Caledonian Canal
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- Gate Lodge And Gate Piers, Inverlochy Castle
- Telford House East, Neptune's Staircase, Banavie Locks, Caledonian Canal
- Banavie Locks Workshop, Caledonian Canal