Kent coastline of Kent is continuously changing, due to tectonic uplift and coastal erosion. Until about 960, the Isle of Thanet was an island, separated by the Wantsum channel, formed around a deposit of chalk; over time, the channels silted up with alluvium. Similarly Romney Marsh and Dungeness have been formed by accumulation of alluvium. Kent's principal river, the River Medway, rises near East Grinstead in Sussex and flows eastwards to Maidstone. Here it turns north and breaks through the North Downs at Rochester, then joins the estuary of the River Thames as its final tributary near Sheerness. The Medway is
East Rochester, Ohio Rochester, Ohio. A post office called East Rochester has been in operation since 1840. East Rochester is located along U.S. Route 30, northwest of East Liverpool and east of Canton. The nearest incorporated community is Minerva, to the west. According to the U.S. Census Bureau, the East Rochester CDP has an area of . It is in the valley of Sandy Creek, which flows west to the Tuscarawas River, a tributary of the Ohio River. East Rochester, Ohio East Rochester is an unincorporated community and census-designated place (CDP) in southern West Township, Columbiana County, Ohio, United States. As of the