Canvey Island Ltd. The site offers a bulk liquid storage facility for refined petroleum products. Neither of the refineries proposed in the 1970s were completed or commissioned. The Texaco site was demolished and the tanks removed, the former Texaco river jetty is still extant. Canvey Island lies off the south coast of Essex east of London, and west of Southend-on-Sea. The island is separated from the mainland to the north and west by Benfleet, East Haven and Vange creeks, and faces the Thames Estuary to the east and south. Along with neighbouring Two Tree Island, Lower Horse and Upper Horse, Canvey is
Estuary river valleys are also known as coastal plain estuaries. In places where the sea level is rising relative to the land, sea water progressively penetrates into river valleys and the topography of the estuary remains similar to that of a river valley. This is the most common type of estuary in temperate climates. Well-studied estuaries include the Severn Estuary in the United Kingdom and the Ems Dollard along the Dutch-German border. The width-to-depth ratio of these estuaries is typically large, appearing wedge-shaped (in cross-section) in the inner part and broadening and deepening seaward. Water depths rarely exceed . Examples of