and Beltinge and Hillborough in the east. The drowned settlement of Hampton-on-Sea once existed beside what is now Hampton. The landscape of the town has been largely influenced by the Plenty Brook, which flows northward through the centre of the town and into the North Sea. It is thought to have been a much larger stream in ancient times. The coastline has two distinct bays, separated by a jut of land created by silt from the outflow of the brook into the sea. The first buildings in the town were built along the east bay, a short distance from the brook outflow, where the road from Canterbury met the sea. The town has since spread across both bays, across the Plenty Brook valley and onto the relatively high land flanking both sides of the valley. The land to the east of the valley reaches a height of above sea level and to the west reaches . Cliffs are formed where this high land meets the sea. The rising land beside the coast, between the valley and the eastern cliffs, is known as 'The Downs' (no relation to the North or South Downs). This area has been named a Site of Scientific Interest and a Special Protection Area for birds. The whole of the north-east Kent coast has been designated a Site of Special Scientific Interest. The geology of the town consists mainly of London Clay, overlaid with brickearth in the west. The sand and clay of The Downs are subject to landslips. The Plenty Brook passes through the town's drainage system, allowing buildings to be built over the top. The brook has been prone to flooding during heavy rain, especially in inland areas, which regularly causes problems for people living in the Eddington area in southern Herne Bay. Stormy weather can cause the sea level by the coast to rise by up to two metres. In the past, this has caused disastrous flooding in the town, the worst in the town's history being in 1953. Coastal defences were subsequently constructed including groynes, sea walls and shingle beach. In the 1990s, these defences were deemed to be inadequate and an offshore breakwater, now known as Neptune's Arm, was built to protect the most vulnerable areas of the town. Climate Herne Bay experiences an oceanic climate (Köppen climate classification Cfb). The nearest Met Office station is at Manston, 10 miles east. In