Canvey Island barriers spanning Benfleet Creek to the north and East Haven Creek in the west. The drainage system consists of sewers, culverts, natural and artificial dykes and lakes which feed seven pumping stations and gravity sluices that discharge the water into the Thames and creeks. Four of the discharge sites are "high flow" stations capable of discharging 600 litres of water per second at any tide level. The levels within the system are managed by a further five "low flow" pumping stations. The Environment Agency's Thames Estuary 2100 flood defence plan includes Canvey Island as one site for alleviating the flood
Tabusintac Lagoon and River Estuary dune system It is located on the Acadian Peninsula, and includes Tabusintac Bay and the mouth of the Tabusintac River. It also contains roughly 6 km of peatlands, within which are numerous freshwater ponds. Tabusintac Lagoon and River Estuary The Tabusintac Lagoon and River Estuary is a wetland in Alnwick Parish, Northumberland County, in north-eastern New Brunswick, Canada. It was classified as a wetland of international importance on June 10, 1993. It is also a globally significant Important Bird Area for the population of common terns, and shorebirds in general, that it supports. Primarily a shallow coastal estuary with gentle