The Avonmouth Severnside Enterprise Area (ASEA)
Ecology Mitigation and Flood Defence Project
The biggest project of its type in the West of England. When completed in 2026/7 it will…
Provide around 17km of flood defences, reducing risk to 2,500 homes and businesses, and help to unlock 12,000 new jobs for the West of England.
Create improved walking routes, making it easier for everyone to enjoy nature and the spectacular views of the internationally important Severn Estuary. Provide a minimum of 80 hectares of new coastal wetland habitats for bird species.
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Watch our flythrough video here to find out what the flood defences between Aust Wharf Road and to south of Severn Beach will look like when complete.

In 2021, much of our focus is on flood defence in the Aust and Severn Beach areas. We are installing precast concrete wall units at Severn Beach. At Old Passage Road we have installed new drainage and built ramps to cross the road and a flood gate and are progressing work on the flood defence wall. We are creating a flood defence at the mouth of the Severn at Cake Pill by raising the outfall structure. We are also continuing our important work to create new coastal wetland habitats for nature both at Hallen Marsh near Avonmouth and at Northwick near Aust.