Location: Wolverley Lock on the Staffordshire & Worcestershire Canal.
Date: Tuesday 30th June 1998.
Equipment: Canon EOS 50e using 28mm f/2.8 lens.
Emulsion: Kodak Gold 200.
Keywords: canal lock, lock gate, central paddle, gushing water, water surge.
Notes: this is what happens immediately after lifting up the central paddle on a lock gate with such a mechanism. Water forces itself through the centre of the gate at some pressure, gushing down over the front of long boats.
Larger version of "The effect of opening the central paddle".