Around the time of the construction of the Whitstable to Canterbury line, the local Gorrell stream was diverted into what was known as the Backwater reservoir, so as to prevent the railway needing to cross the estuary of the stream on damp and unstable land. The Gorrell Backwater was then filled through the stream itself as well as rain water drainage when the tide was in, and whilst out the water would be released into the newly built Whitstable Harbour. The reservoir unfortunately would contribute to the flooding of the town during years when the reservoir could not be drained, such as in 1897 and 1953 when weather conditions were exceptionally bad. This continued into the late 1960s, when fire engines were used to pump out large quantities of the water to prevent further flooding.