Cassio Bridge Lock Number 78 is a Grade II listed building in the Three Rivers local planning authority area, England. First listed on 3 October 1985. Lock.
Cassio Bridge Lock Number 78
- WRENN ID
- ragged-finial-violet
- Grade
- II
- Local Planning Authority
- Three Rivers
- Constituency
- South West Hertfordshire MP: Mr Gagan Mohindra (Con)
- Country
- England
- Date first listed
- 3 October 1985
- Type
- Lock
- Address
- Cassio Bridge Lock Number 78, Grand Union Canal, Croxley Green
- OS grid reference
- TQ 088 962
- Coordinates
- 51.65436, -0.42761
- Source
- Historic England listing
Description
Cassio Bridge Lock Number 78 is located on the Grand Union Canal in Rickmansworth and dates from the early 19th century. The lock features stone setts laid above brick walls and has timber lock gates. It is equipped with iron bollards, which were likely cast in 1896 by the London and Lancashire Engineering Company. This structure is included for its group value, particularly in relation to Cassio Bridge Lock House on Cassiobridge Terrace.
Local climate
Cassio Bridge Lock Number 78 sits in a drier-than-average part of the UK, with an average of 710 mm of rain a year. This makes it drier than 86% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 85% 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.
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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Nearby listed buildings
- Cassio Bridge Lock House
- Cassio Bridge Lodge
- Watford Station
- Master's House at Watford Boys Grammar School
- Main Block at Watford Boys Grammar School
- Durrants House with steps directly to south and associated walls and gate posts to west
- Church of St Michael
- Cassiobury Court
- Little Cassiobury and former stable block to rear.
- Garden Cottage