Mill Dam with Weir Sluice Gates, and Mill Race is a Grade II listed building in the Lake District National Park local planning authority area, England. First listed on 7 October 1986. A C19 Mill structure.

Mill Dam with Weir Sluice Gates, and Mill Race

WRENN ID
winding-cornice-dale
Grade
II
Local Planning Authority
Lake District National Park
Constituency
Westmorland and Lonsdale MP: Tim Farron (LD)
Country
England
Date first listed
7 October 1986
Type
Mill structure
Address
Mill Dam with Weir Sluice Gates, and Mill Race, Mill Lane, Crosthwaite and Lyth, Westmorland and Furness
OS grid reference
SD 440 907
Coordinates
54.30949, -2.86156
Source
Historic England listing

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

Description

The mill dam with weir, sluice gate, and mill race is likely from the 19th century in its current form, although it may include earlier elements. It is constructed of stone with a cast-iron sluice gate mechanism. The structure features drystone construction that incorporates natural outcrops of rock. On the left side, the sloping weir has a wide, shallow recess that runs the full width at the top. The sluice gate on the right is operated by a cast-iron wheel that turns on a screw thread, which passes through a stone slab laid across the mill race.

Local climate

Mill Dam with Weir Sluice Gates, and Mill Race sits in one of the wettest parts of the UK, with an average of 1,520 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 97% of listed buildings.

It experiences an average of 39 freeze-thaw cycles a year, more than 75% of listed buildings. Of these, 19 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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  • 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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