Canvey Island Canvey Island Canvey Island is a civil parish and reclaimed island in the Thames estuary in Essex, England. It has an area of and a population of 38,170. It is separated from the mainland of south Essex by a network of creeks. Lying only just above sea level it is prone to flooding at exceptional tides, but has nevertheless been inhabited since the Roman invasion of Britain. The island was mainly agricultural land until the 20th century when it became the fastest growing seaside resort in Britain between 1911 and 1951. The North Sea flood of 1953 devastated the island,
Yalu River its length. Most of the river freezes during winter and can be crossed on foot. The depth of the Yalu River varies from some of the more shallow parts on the eastern side in Hyesan (1 m) to the deeper parts of the river near the Yellow Sea (2.5 m). The estuary is the site of the Amrok River estuary Important Bird Area, identified as such by BirdLife International. About 205 islands are on the Yalu. A 1962 border treaty between North Korea and China split the islands according to which ethnic group was living on each island. North Korea