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Flood of 1953, so the original design placed living accommodation at first floor level or above, used overhead walkways and left the ground level of buildings as garage space.<unk> Flood of 1953, so the original design placed living accommodation at first floor level or above, used overhead walkways and left the ground level of buildings as garage space. There is also an elevated 'escape route' from the estate to be used in the event of flooding, which runs along the top of a grassed mound to the north of Lesnes neighborhood.<unk> There is also an elevated 'escape route' from the estate to be used in the event of flooding, which runs along the top of a grassed mound to the north of Lesnes neighborhood.<unk> There is also an elevated 'escape route' from the estate to be used in the event of flooding, which runs along the top of a grassed mound to the north of Lesnes neighborhood.