Geology of Kent to uplift, sedimentation, and marine erosion. The Isle of Thanet was till recently (AD 960) an island, formed around a deposit of chalk. 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 Edenbridge and flows some 25 miles (40 km) eastwards to a point near Maidstone, when it turns north. Here it breaks through the North Downs at Rochester before joining the River Thames as its final tributary near Sheerness. The river is tidal as far as Allington lock, but in earlier times
Rochester, Kentucky 1839. It is named for Rochester, New York. Rochester is located in western Butler County at (37.210712, -86.892483). Its northwestern boundary, the Green River, is the county boundary as well, with Ohio County on the opposite side of the river. A small portion of the western boundary of the city is formed by the Mud River, which is also the boundary with Muhlenberg County. Kentucky Route 70 (Rochester Road) passes through the city, leading east to Morgantown, the Butler County seat, and west to Drakesboro. Kentucky Route 369 leaves Rochester to the north, crossing the Green River by the Rochester