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
Indian River (Manistique River tributary) Indian River (Manistique River tributary) Indian River is a tributary of the Manistique River on the Upper Peninsula of Michigan in the United States. It rises out of Hovey Lake at on Hiawatha National Forest land in Alger County and flows south and east through a lake district and on through Schoolcraft County. The river flows into the 8,659 acre (35 km²) Indian Lake at and flows out at . It then flows east and south about 2.5 miles where it merges with the Manistique River, which then flows through Manistique and into Lake Michigan at . Major tributaries include