Water Wheel at Dyffrydan is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 1 February 1995. Demolished building.
Water Wheel at Dyffrydan
- WRENN ID
- errant-buttress-solstice
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 1 February 1995
- Type
- Demolished building
- Address
- Water Wheel at Dyffrydan, Pont Dyffrydan, Arthog, Gwynedd
- OS grid reference
- SH 694 150
- Coordinates
- 52.71687, -3.93395
- Source
- Cadw listing
Description
The water wheel at Dyffrydan is a 19th-century structure featuring associated machinery. A dug water course, which is now dry, leads from the hill behind to a short rubble aqueduct. In front of this aqueduct, a large iron wheel with timber spokes is set in a rubble-walled pit, supported by timber joists. To the left of the main wheel, there are two smaller wheels connected to it, complete with cogs and teeth, which are also bolted onto a timber frame.
Local climate
Water Wheel at Dyffrydan sits in one of the wettest parts of the UK, with an average of 1,340 mm of rain a year. This makes it wetter than 96% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, more than 52% of listed buildings. Of these, 17 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
- Sale history — 1 transaction since 2000
- 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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