Weir on E side of Tennant Canal at Red Jacket Pill is a Grade II listed building in the Neath Port Talbot local planning authority area, Wales. First listed on 29 March 2000. Weir.
Weir on E side of Tennant Canal at Red Jacket Pill
- WRENN ID
- secret-steel-lake
- Grade
- II
- Local Planning Authority
- Neath Port Talbot
- Constituency
- Neath and Swansea East MP: Carolyn Harris (Lab)
- Country
- Wales
- Date first listed
- 29 March 2000
- Type
- Weir
- Address
- Weir on E side of Tennant Canal at Red Jacket Pill, Coedffranc
- OS grid reference
- SS 724 946
- Coordinates
- 51.6363, -3.84516
- Source
- Cadw listing
Description
The weir on the east side of the Tennant Canal at Red Jacket Pill is a Grade II listed structure. It measures approximately 5 meters in length at the top, where water is channeled from the canal through six shallow segmental-arched culverts located beneath the towpath. The arches are made of dressed sandstone, and the core stonework of the culverts is visible on the upper surface, though a concrete coping has been added on the canal side. On the east side, there is a short cascade of stepped stonework. The flanking walls are partially intact, having mostly been washed away, and are constructed of rubble stone with flat dressed copings.
Local climate
Weir on E side of Tennant Canal at Red Jacket Pill sits in one of the wettest parts of the UK, with an average of 1,260 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 96% of listed buildings.
It experiences an average of 22 freeze-thaw cycles a year, fewer than 77% of listed buildings. Of these, 8 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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- 3 Weir on River Teme Including Attached Sluice, Retaining Walls and Culvert
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Nearby listed buildings
- River Lock and attached bridges at Red Jacket Pill
- Bridge over Tennant Canal E of Cwrt y Bettws Farm
- Boiler stack of former Cardonnel Tinplate Works
- Roving Bridge over Neath Canal at Giant's Grave
- Church of St Mary
- Briton Ferry Ironworks Engine House
- Jersey Marine Tower
- North jetty of outer tidal basin at Briton Ferry Docks
- Workshops, stores and office at Briton Ferry Foundary
- Former Steam Power House at Briton Ferry Docks