River Thames shipping coming in and out of London, in 1732 it received the world's first lightship. This became a major landmark, and was used as an assembly point for shipping. Today it is marked by Sea Reach No. 1 Buoy. The River Thames contains over 80 islands ranging from the large estuarial marshlands of the Isle of Sheppey and Canvey Island to small tree-covered islets like Rose Isle in Oxfordshire and Headpile Eyot in Berkshire. They are found all the way from the Isle of Sheppey in Kent to Fiddler's Island in Oxfordshire. Some of the largest inland islands, for example
Canvey Lake been converted to a lake by the building of a sea wall. Wildlife includes mallards, moorhens and water voles. A shingle bank has been created and reed beds cut back. There is access from Denham Road Canvey Lake Canvey Lake is an 8.3 hectare Local Nature Reserve in Canvey Island in Essex. It is owned by Castle Point Borough Council and managed by the council together with Canvey Island Town Council. On 1 March 2010 Canvey Island Town Council signed a 99 year lease with Castle Point Borough Council to run the site with a committee of two councillor from