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
Canvey Island Council by 17 councillors elected from six wards: Canvey Island Central, East, North, South, West and Winter Gardens. 16 of the 17 councillors belong to the Canvey Island Independent Party (CIIP) formed in 2003 by ex-Labour deputy Council leader and local resident Dave Blackwell. The remaining councillor is Conservative. The Canvey Island town council was formed in 2007 after a petition spearheaded by islander Albert Payne, with the signatures of 3,000 islanders, was accepted by the government. , the council has 11 councillors, 10 of whom are Canvey Island Independent members, and functions with Councillor surgeries and through four committees