Mersey Locks St Helens Canal is a Grade II listed building in the Halton local planning authority area, England. First listed on 31 October 1983. Canal locks.
Mersey Locks St Helens Canal
- WRENN ID
- grey-rafter-ash
- Grade
- II
- Local Planning Authority
- Halton
- Constituency
- Widnes and Halewood MP: Derek Twigg (Lab)
- Country
- England
- Date first listed
- 31 October 1983
- Type
- Canal locks
- OS grid reference
- SJ 513 842
- Coordinates
- 53.35254, -2.73172
- Source
- Historic England listing
Description
The Mersey Locks on the St Helens Canal, located at Spike Island, were built in 1833 and feature restored gates. These locks are part of a pair that manage a 12-foot difference in water level between the canal and the River Mersey. They are constructed from large timber, with massive posts and rails, and include a canal end gate with a catwalk. The restoration of the east lock's gates and the removal of the gates at the north end of the west lock were part of an enhancement scheme completed in 1981.
Local climate
Mersey Locks St Helens Canal sits in a wetter-than-average part of the UK, with an average of 1,000 mm of rain a year. This makes it wetter than 80% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 63% of listed buildings.
It experiences an average of 31 freeze-thaw cycles a year, fewer than 61% of listed buildings. Of these, 15 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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