
This is a lock with a rise of 7 feet and 7 inches.
| Burghfield Mill Winding Hole | 7½ furlongs | |
| Hisseys Bridge No 17 | 3¾ furlongs | |
| M4 Motorway Bridge No 18 | 2 furlongs | |
| Quarry Bridge (demolished) | 1¼ furlongs | |
| Winding Hole below Garston Lock | ½ furlongs | |
| Garston Lock No 102 | ||
| Sheffield Lock No 101 | 3¾ furlongs | |
| Theale Swing Bridge No 19 | 4¾ furlongs | |
| Sheffield Lock Weir Entrance | 6½ furlongs | |
| Gravel Works Conveyor Bridge No 20 (demolished) | 6½ furlongs | |
| Winding Hole below Sulhampstead Lock | 1 mile, 2¾ furlongs | |
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Wikipedia has a page about Garston Lock
Garston Lock (grid reference SU655707) is a lock on the Kennet and Avon Canal. It is near the M4 motorway and near Reading, England.
Garston Lock was built between 1718 and 1723 under the supervision of the engineer John Hore of Newbury, and this stretch of the river is now administered by Canal & River Trust and known as the Kennet Navigation. It has a rise/fall of 7 ft 7ins (2.29m).
One of only two remaining working examples of turf sided locks on the canal (the other being Monkey Marsh Lock), Garston Lock has been described as needing "more water to operate than the now more common brick or stone-sided variety" as the sloping sides increase the volume of the lock.
The two sets of lock gates work differently: the upper set operates via a mechanical system, while the lower gates are hydraulic. The top part of the lock chamber has sloping banks which are covered by vegetation of various types rather than by turf. An arrangement of steel rails ensures that boats stay in the centre of the lock during the rise/fall of 7 ft 7 in (2.31 m).
The lock is a grade II* listed building.
Two pillboxes dating from World War II at the northwest and southeast corners of the lock, which were built as anti tank defences, are also listed buildings.


![Garston Lock. Garston Lock (number 102) is a lock on the Kennet and Avon Canal between Sheffield Bottom Lock (101) and Burghfield Lock (103). It was built between 1718 and 1723 and has a rise/fall of 2.31 metres.The lock is unusual as it is turf sided, one of only two on the Kennet and Avon Canal in this style. The other is [[[7490185]]].The lock is Grade II* listed, list entry number 1117125 https://historicengland.org.uk/listing/the-list/list-entry/1117125The pillboxes are also listed, the one to the left Grade II listed, list entry number 1135986 https://historicengland.org.uk/listing/the-list/list-entry/1135986 and the one to the right Grade II listed, list entry number 1117126 https://historicengland.org.uk/listing/the-list/list-entry/1117126 by Oscar Taylor – 25 September 2023](https://s1.geograph.org.uk/geophotos/07/60/72/7607233_222bfa4e_120x120.jpg)


![Garston Lock. Garston Lock (number 102) is a lock on the Kennet and Avon Canal between Sheffield Bottom Lock (101) and Burghfield Lock (103). It was built between 1718 and 1723 and has a rise/fall of 2.31 metres.The lock is unusual as it is turf sided, one of only two on the Kennet and Avon Canal in this style. The other is [[[7490185]]].The lock is Grade II* listed, list entry number 1117125 https://historicengland.org.uk/listing/the-list/list-entry/1117125 by Oscar Taylor – 25 September 2023](https://s2.geograph.org.uk/geophotos/07/60/72/7607234_64ffabef_120x120.jpg)
![Pillbox alongside the towpath at Garston Lock. Unlike most of them along the Kennet & Avon canal, not covered in vegetation [graffiti instead]. by Christine Johnstone – 06 October 2013](https://s3.geograph.org.uk/geophotos/03/71/43/3714323_f8ae116c_120x120.jpg)


![Garston Lock, No. 102, Kennet Navigation. Grade II* Listed turf lock. Turf-sided locks that exist have been restored with varying degrees of originality but this is reportedly the only remaining original example. It was built between 1718 and 1723 under the supervision of the engineer John Hore and widened in 1767 for Newbury type barges largely destroying the earlier construction. It has a rise/fall of 7 ft 7ins (2.29m). Whilst cheap to build, the lock will use more water than a traditional brick lock of the same size. Restoration work in 1993-4 revealed a timber head apron (platform at the entrance to a lock chamber) of mid 18th century date that fell out of use when the lock was subsequently rebuilt, possibly around 1854, to the specifications of John Rennie with a slate revetment. The rails that prevent boats grounding and protects the solid lower wall of welsh slate was added circa 1900 by the GWR. The revetment of slate is a unique feature for locks on the Kennet and Avon Canal. Also shown is the Grade II listed 1940 pillbox. See [[6358167]] for details of pillbox and full lock view. by Jo and Steve Turner – 16 October 2003](https://s3.geograph.org.uk/geophotos/06/35/79/6357947_8f944d1b_120x120.jpg)
![Turf-sided Garston Lock [no 102] emptying. The rails prevent boats grounding on the sloping 'turf' sides. When the lock is full the brown vegetation is under water. by Christine Johnstone – 04 October 2013](https://s2.geograph.org.uk/geophotos/03/71/13/3711362_8498bd90_120x120.jpg)


![Waiting near the lock. Narrow boat waits near Garston lock for the one in the lock to exit. [[2168322]] by Bill Nicholls – 13 November 2010](https://s0.geograph.org.uk/geophotos/02/16/83/2168344_19b66a0a_120x120.jpg)








![Footbridge over the bywash, Garston Lock [no 102]. Looking towards an ivy-covered pillbox on the north side of the lock. by Christine Johnstone – 04 October 2013](https://s3.geograph.org.uk/geophotos/03/71/13/3711359_630740eb_120x120.jpg)







![Type 28A across the lock. I did not expect to see a second type 28A across the lock but here it is getting covered in ivy which is in stark contrast to the one in the link taken by Dr Neil Clifton. [[386843]] by Bill Nicholls – 13 November 2010](https://s2.geograph.org.uk/geophotos/02/16/05/2160502_b0fca53d_120x120.jpg)