Foulness Island of plants and invertebrates thrive there. Other birds which use the island for breeding include avocet, common tern, little tern, Sandwich tern and ringed plover. During the winter months, in excess of 100,000 waterfowl have been reported. The avocet population is the second largest in the United Kingdom. The Foulness SSSI has been designated as a Special Protection Area for Birds under the EC Birds Directive, and is also a Ramsar site under the Ramsar Convention because of its importance as a wetland. Foulness Island Foulness Island () is an island on the east coast of Essex in England, which
River Foulness River Foulness The River Foulness is a river in the East Riding of Yorkshire, England. Its name is derived from Old English "fūle[n] ēa", meaning “dirty water”. Maintenance responsibilities for the river transferred from the Environment Agency to the Market Weighton Drainage Board on 1 October 2011. Market Weighton Drainage Board subsequently amalgamated with the Lower Ouse Internal Drainage Board on 1 April 2012 to create the Ouse and Humber Drainage Board. The river discharges into the Humber Estuary via Market Weighton Canal. Water levels within the river, its tributaries and the canal are managed and controlled by the Environment