Dalswinton House Dam is a Grade C listed building in the Dumfries and Galloway local planning authority area, Scotland. First listed on 26 June 1986.
Dalswinton House Dam
- WRENN ID
- over-turret-pearl
- Grade
- C
- Local Planning Authority
- Dumfries and Galloway
- Constituency
- Dumfriesshire, Clydesdale and Tweeddale MP: David Mundell (Con)
- Country
- Scotland
- Date first listed
- 26 June 1986
- OS grid reference
- NX 944 842
- Coordinates
- 55.14121, -3.6572
- Source
- Historic Environment Scotland listing
Description
Dalswinton House Dam is likely to have been built around 1785 for Patrick Miller of Dalswinton, a notable figure in the early development of steam navigation. It is a small, straight dam located at the southeastern end of Dalswinton Loch. The dam is constructed of rubble with red ashlar dressings and coping along the top. Patrick Miller conducted successful experiments with the world's first steam-powered boat on Dalswinton Loch in 1788, and the dam was probably built to facilitate greater scope for these experiments.
Local climate
Dalswinton House Dam sits in one of the wettest parts of the UK, with an average of 1,240 mm of rain a year. This makes it wetter than 93% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 87% of listed buildings.
It experiences an average of 48 freeze-thaw cycles a year, more than 89% of listed buildings. Of these, 25 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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