Overflow Portal at Butterley Reservoir is a Grade II listed building in the Kirklees local planning authority area, England. First listed on 11 July 1985. Overflow portal.
Overflow Portal at Butterley Reservoir
- WRENN ID
- graven-turret-elm
- Grade
- II
- Local Planning Authority
- Kirklees
- Constituency
- Colne Valley MP: Paul Davies (Lab)
- Country
- England
- Date first listed
- 11 July 1985
- Type
- Overflow portal
- OS grid reference
- SE 047 106
- Coordinates
- 53.59271, -1.92945
- Source
- Historic England listing
Description
The overflow portal at Butterley Reservoir, built between 1891 and 1906 by T. & C. Hawksley & Co., is constructed of ashlar stone. It features a semicircular arched head with moulded reveals. The surrounding structure is made of ashlar, topped with a moulded cornice and a blocking course. The wings on either side curve forward to the northwest and slope downwards, forming ashlar walls that turn inward and end in squared ashlar posts with moulded pyramidal copings. The tops of the wings are lined with bevelled stone steps, and there are iron sluices positioned in front of the portal.
Local climate
Overflow Portal at Butterley Reservoir sits in a wetter-than-average part of the UK, with an average of 1,020 mm of rain a year. This makes it wetter than 82% 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 51 freeze-thaw cycles a year, more than 93% of listed buildings. Of these, 31 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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