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
Irabere estuary and Iliomar forest Important Bird Area Irabere estuary and Iliomar forest Important Bird Area The Irebere estuary and Iliomar forest Important Bird Area is a tract of land in East Timor, a country occupying the eastern end of the island of Timor in the Lesser Sunda Islands of Wallacea. The 16,554 ha IBA lies on the border between the districts of Viqueque to the west and Lautém to the east. In elevation it ranges from sea level to about 500 m. It contains the area around the Irabere River estuary, which is vegetated by degraded semi-evergreen forest on alluvial soils, "Casuarina" forest along the river and