The Fort on the Lake is a Grade II listed building in the Dorset local planning authority area, England. First listed on 2 October 1984. Folly.
The Fort on the Lake
- WRENN ID
- grey-screen-larch
- Grade
- II
- Local Planning Authority
- Dorset
- Constituency
- South Dorset MP: Lloyd Hatton (Lab)
- Country
- England
- Date first listed
- 2 October 1984
- Type
- Folly
- Address
- The Fort on the Lake, Coombe Keynes
- OS grid reference
- SY 860 839
- Coordinates
- 50.65487, -2.19807
- Source
- Historic England listing
Description
The Fort on the Lake is a folly, likely built around 1851. It features rubble stone walls with brick dressings and has a flat roof. The structure includes a circular battlemented tower situated on a circular platform that extends into the lake. The tower is one storey high and has four openings with four-centred arched heads; the opening facing the land has doors, while the others are shuttered. There are string courses above the openings and below the battlements. The circular platform is paved with square tiles and has a low stone boundary wall, which is raised on the landward side to create an archway with iron gates. A brass cannon that was once on the platform has been removed and stored. This structure serves as a picturesque feature of the lake.
Local climate
The Fort on the Lake receives an average of 790 mm of rain a year. This makes it drier than 58% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 75% of listed buildings.
It experiences an average of 11 freeze-thaw cycles a year, fewer than 90% of listed buildings. Of these, 4 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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