Abbey River Tideway where there are two larger islands. It is much smaller than Canvey Island and the Isle of Sheppey and narrowly ahead of Andersey Island facing Abingdon-on-Thames, another market town with an abbey which had multiple medieval mills, another of note being Westminster Abbey, the island of which Thorney Island no longer exists. The outfall of the Abbey River is 400 m above Chertsey Bridge, into the weir pool of Chertsey Weir. The manmade strictly-considered "island" the bypass channel forms is outranked in size since the 2002 completion of the Jubilee River by the example containing Dorney and Eton, Berkshire.
Estuary of Bilbao reached high levels of contamination because of the industrial activities during the past century. see page:http://bilbaoenconstruccion.com/2010/07/06/bilbao-recupera-su-alma-plan-integral-de-saneamiento-de-la-ria/ Estuary of Bilbao The Estuary of Bilbao (Spanish: "Ría de Bilbao" / Basque: "Bilboko Itsasadarra") lies at the common mouth of the rivers Nervion, Ibaizabal and Cadagua, that drain most of Biscay and part of Alava in the Basque Country, Spain. In this instance, the Spanish word estuario is used to describe what in English would normally be called part estuary, part tidal river. The estuary becomes a tidal river which extends into the city of Bilbao, starting from the Bilbao Abra bay. It