A flood defence to protect The Wash shoreline near Wrangle in Lincolnshire has been completed.
A 5km stretch of the Wash shoreline had been viewed as potentially catastrophic if there was a major coastal flood, with the lowest sea banks along the Wash frontage, and only a single line of defence.
The project, led by Witham Fourth District, involved main contractor D Morgan installing a 1:3 steep slope behind the sea wall leading to a ‘soke dyke’ to cope with future over-topping, designed by Peter Brett Associates.
lincolnshire flood defence
The spoil to build the bank was donated by landowners and taken from adjacent farmland
During high tides, these accommodate the water that permeates up through the ground and during heavy rainfall, they enable surplus water to flow to pumping stations.
Sea defences were raised to over 7m high, improving the protection for both properties and farmland, and creating additional grassland and semi-wetland wildlife habitats.
The Wash Lincolnshire
Lincolnshire County Council executive councillor for environment and economy Colin Davie said: “I am delighted to see the successful completion of this latest major scheme. Lincolnshire’s flood risk and water partnership was put together six years ago, to promote exactly this kind of co-ordinated working, where each organisation contributes its own specialism to achieve more for our communities and businesses than would have happened were we all working alone.
“In this case, using £1.3M of Defra grant funding we have secured an additional half a million pounds of external investment that would otherwise have gone somewhere else. I look forward to our partnership continuing to attract more external funding to help secure a stronger economic future for our county.”
The project board also included Lincolnshire County Council, landowners, Environment Agency and Natural England.
The Wash Lincolnshire
Peter Bateson, chief executive of Witham Fourth District IDB, said: “This was a comprehensive project that followed a major survey in 2016 to identify the existing profile of the banks, collect environmental information and to assess the full scope of the works.
“This was the first major improvement to coastal flood defences in the area for over 30 years, and by working in partnership, W4IDB has been able to help protect farmland and residents for future generations, while remaining sympathetic to the environmental responsibilities in this unique area.”
The £1.8M project will safeguard over 3,400ha of prime grade one farmland, and 460 domestic and industrial properties.