is river thames a estuary
View of the upper Thames estuary from Tilbury to Mucking Creek looking north from Shorne, which is 4 kilometres south of the river.The Thames Estuary is the estuary in which the River Thames meets the waters of the North Sea. It is not easy to define the limits of the estuary.iew of the upper Thames estuary from Tilbury to Mucking Creek looking north from Shorne, which is 4 kilometres south of the river.