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Bingley Five-Rise Locks is a staircase lock on the Leeds and Liverpool Canal at Bingley. As the name implies, a boat passing through the lock is lifted or lowered in five stages.In effect the five-rise consists of five locks connected together without intermediate ponds: the lower gate of each chamber forms the upper gate of the chamber below. There are therefore five chambers, and six gates. As the Leeds Liverpool canal is a wide canal, the chambers are 14 feet (4.3 m) wide, and each gate consists of two half-gates, hinged from opposite sides of the canal. Each half gate is slightly more than 7 feet (2.1 m) wide, so that the two halves close in a V shape (pointing upstream). Water pressure on the uphill side of the gate keeps it tightly closed until the water levels on either side are equal, when the gate can be opened and the boat moved to the next chamber.The five-rise is the steepest flight of locks in the UK, with a gradient of about 1:5 (a rise of 59 ft 2 in (18.03 m) over a distance of 320 ft (98 m)). The intermediate and bottom gates are the tallest in the country.
Pentax K10D 18-55mm Raw.