NORTH PORTSEA COASTAL SCHEME
Protecting the Future of North Portsea Island
The North Portsea Coastal Scheme covers 8.4km of Portsmouth’s coastline from Tipner through to Milton. Most of the area is low-lying and many of the current coastal defences are approaching the end of their effective lives. Predictions also indicate that sea levels are set to rise by up to a meter over the next 100 years, meaning the flood risk to the area will increase. The new scheme is designed to a 1 in 500 year (plus allowance for climate change to 2100) standard of protection against flooding, reducing the risk of flooding from the sea to over 4,200 homes, 500 businesses, and critical infrastructure including the Eastern Road over the next 100 years.
Since 2014, the government has awarded £85m of funding to the North Portsea Coastal Scheme for construction. Construction began in 2015 and is being delivered in five construction phases, with completion programmed for 2026. The scheme is grant funded by the Environment Agency and is being delivered by Coastal Partners on behalf of Portsmouth City Council.
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AREA AT RISK
The map below shows the area of Southsea which is at risk from a major flood event.
Throughout history, major storms have caused severe flooding in Portsmouth. In recent years waves have regularly washed over the top of existing defences and there have been several major failures along the frontage, increasing the risk of flooding and costing more than £1m in repair works.
Significant storms are expected to happen again, and climate change is expected to increase the intensity and frequency of major storms.
