Lock Number 9 is a Grade II listed building in the West Northamptonshire local planning authority area, England. First listed on 9 July 1987. Lock.

Lock Number 9

WRENN ID
eternal-bracket-rowan
Grade
II
Local Planning Authority
West Northamptonshire
Constituency
South Northamptonshire MP: Sarah Bool (Con)
Country
England
Date first listed
9 July 1987
Type
Lock
Address
Lock Number 9, Grand Union Canal, Rothersthorpe
OS grid reference
SP 725 568
Coordinates
52.20466, -0.93911
Source
Historic England listing

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

Description

Lock Number 9 is a lock located on the northern arm of the Rothersthorpe Grand Union Canal, built around 1815 and restored in 1891 and the 20th century. It is constructed of red brick and features metal gates. This lock is designed with a single width and includes single upper gates and double lower gates. It also has an overflow channel and is part of a flight of 12 locks on the Northampton Arm of the Grand Union Canal.

Local climate

Lock Number 9 sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 83% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 82% of listed buildings.

It experiences an average of 37 freeze-thaw cycles a year, more than 67% of listed buildings. Of these, 17 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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  • 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

  1. Lock No.8 on Northampton Arm of Grand Union Canal Grade II 103 m
  2. Lock Number 10 on Northampton Arm of Grand Union Canal Grade II 115 m
  3. Lock Number 7 on Northampton Arm of Grand Union Canal Grade II 187 m
  4. Lock Number 11 on Northampton Arm of Grand Union Canal Grade II 205 m
  5. Lock Number 6 on Northampton Arm of Grand Union Canal Grade II 280 m
  6. Bridge Number 5 on Northampton Arm of Grand Union Canal Grade II 344 m
  7. Lock Number 12 on Northampton Arm of Grand Union Canal Grade II 354 m
  8. Lock Number 5 on Northampton Arm of Grand Union Canal Grade II 361 m
  9. Lock Number 4 on Northampton Arm of Grand Union Canal Grade II 451 m
  10. Lock Number 3 on Northampton Arm of Grand Union Canal Grade II 581 m