Product Description: You will be buying a Photograph produced using professional photographic lab equipment and printed on high quality photographic paper. Please note that sometimes a small amount of image cropping is neccessary to produce your photograph. Some photographs may have areas of white space along the edges / border. Produced on a Print & Supply basis from an image previously made available on Geograph by the Copyright holder

Condition: New

Size: 12" x 8" - 305mm x 203mm

Copyright (Photograph and text in Photograph Notes): � Copyright Roger Kidd and licensed for reuse under creativecommons.org/licenses/by-sa/2.0 details available here: https://creativecommons.org/licenses/by-sa/2.0/

Photograph Notes: There are five wide locks in the flight at Knowle on the Grand Union Canal. They provide a total rise of 41ft 10in (12�75 metres). Originally there were six narrow locks here. During the extensive upgrading of the Grand Union Canal in the early 1930s these were replaced by the five wide locks in which pairs of boats could navigate together, side by side. Remnants of the original structures can still be seen to the east of several of the current locks.(See below the blue motor vehicle in this image). Side ponds were installed alongside each lock in order to optimise efficiency in the use of water. Pairs of ground paddles can still be seen by each lock, though the sideponds are no longer in use.

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