Dalmuir Drop Lock on the Forth and Clyde Canal
Introduction
The photograph on this page of Dalmuir Drop Lock on the Forth and Clyde Canal by G Laird as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © G Laird Taken: 29 Dec 2013
The UK's first drop lock allows boats to pass under Dumbarton Road at Dalmuir, without disrupting traffic, by temporarily lowering the water level beneath the road to give sufficient headroom. When a boat has entered the lock chamber, 2000 cubic metres of water are pumped out to increase the air draft to 3 metres. The process takes around 40 minutes. The lock is manned by British Waterways staff.