| Interim Progress Review now available to download here.
Why is the study needed?.
The long sandy beaches of Exmouth and Dawlish Warren are among the most popular holiday destinations in south Devon, attracting thousands of visitors and holidaymakers every year. As well as providing excellent amenity and recreational facilities, both beaches help protect Exmouth and the Exe Estuary by absorbing the energy of waves and currents during storms. The Warren is also a Site of Special Scientific Interest (SSSI), Special Area of Conservation (cSAC), National Nature Reserve (NNR) and Local Nature Reserve (LNR), and lies within Exe Estuary SSSI, Special Protected Area (SPA) and Ramsar Site. However, due to these conflicting pressures, the sand dunes and associated plant life on Dawlish Warren SSSI are considered to be in an ‘unfavourable and declining condition’..
At Exmouth, the beach reduces the risk of the seawall being overtopped. This is particularly important because the town centre is lower than the seawall and homes and local businesses are at risk of flooding..
The sand spit at Dawlish Warren is a natural barrier that prevents waves penetrating the estuary during storms and may help to protect waterside properties from flooding. It is also thought that the spit provides essential protection to the two railway lines that run along each side of the estuary shore.
In recent years, the level and extent of the beaches at Exmouth has changed considerably. In 2004, part of the sea wall collapsed and the foundations of other sections have been undermined. There is now a need to increase beach levels to improve its effectiveness as a coastal defence.
The beach at Dawlish Warren has also suffered from erosion. Considerable quantities of sand have gone from the foreshore at the western end of the beach - the area of the Warren most popular with holidaymakers.
An initial inspection suggests that this sand has been transported by waves and currents to the eastern end of the spit. The loss of this sand reduces the amenity value of the beach and raises concerns about a possible breach of the sand spit and possibly increasing the risk of flooding to properties around the estuary.
Network Rail are also concerned that any breach of the Warren, or narrowing of this spit at the western end, could jeopardise the safe operation of the railway. .
Due to these concerns, the Environment Agency are currently drawing up emergency plans that will help reduce the impacts of a sudden breach..
With sea levels forecast to rise over the coming decades, these flood risks could increase significantly..
What will the study tell us?.
We are working to obtain a better understanding of the changes occurring at Exmouth and Dawlish Warren and how best to manage these important coastal defences.
The Exe Estuary Coastal Management Study started in March of this year and is supported by the Environment Agency, East Devon District Council, Natural England and Teignbridge District Council. The study will investigate the causes of these changes and suggest strategies to best manage these local defences in the long term..
The study is being carried out by the Halcrow Group, a leading firm of Civil Engineering Consultants, with a local presence in Exeter. Initial stages include the collection of data on the wind, waves and currents, topographic and bathymetric surveys, historical maps and photographs, aerial photographs and records of previous storms. This data will enable Halcrow to prepare reports on the height, direction and frequency of waves and water levels along the coastline. In addition, a draft report has also been prepared on previous changes to the coastline at Exmouth and Dawlish over the last 300 years..
An understanding of the historic evolution of this area gives a valuable insight into the factors that have influenced the changes and will provide the Consultants with a basis for forecasting how the estuary may evolve in the future..
A Strategic Environmental Assessment (SEA) has been prepared to report on the baseline information that has been gathered. This will serve to identify and develop the environmental objectives of any proposed management plan to address the long-term coastal defence and environmental management issues at the site. This SEA has been published on the Exe Estuary Management Partnership website. (Strategic Environmental Assessment).
This study is due to be completed in Summer 2008, after which the various local government authorities and organisations with responsibilities for various aspects of the Exe Estuary will be invited to comment on the findings and recommendations of the study. This will then be followed by a period of public consultation.Strategic Environmental Assessment
If you need further information please contact Mike Baker by telephone on 01395 516551, by email at mbaker@eastdevon.gov.uk or in writing to East Devon District Council, Knowle, Sidmouth, Devon, EX10 8HL.
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