Geography of Kent 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 cargo-carrying vessels reached as far upstream as Tonbridge. The Medway has captured the head waters of other rivers such as the River Darent. There are other rivers in Kent, most notably the
Baezaeko River 26, and 27. Baezaeko River The Baezaeko River is a tributary of the West Road River, one of the main tributaries of the Fraser River, in the Canadian province of British Columbia. It flows through the Fraser Plateau to the West Road River. The Baezaeko River's name is derived from a Dakelh word meaning "basalt river", referring specifically to the black basalt from which arrowheads were made. The Baezaeko River originates in and flows through the Fraser Plateau. From its source it flows generally east, then northeast and north. It flows through three Nazko First Nation Indian Reserves: Baezaeko River