1. Cuckmere Pathfinder Group Options Impact Study COASTAL PROCESSES REVIEW Public Meeting Alfriston 5 th April 2011 1

2. The Coastal Review Panel Technical Reviewers Alan BramptonHR Wallingford Uwe DornbuschEnvironment Agency (formerly Sussex Univ) Callum FirthUniversity of Brighton Co-ordinator Richard YoungRYE Consultancy 2

3. The Coastal Workshop (21 st March 2011) Technical Reviewers Alan BramptonHR Wallingford Uwe DornbuschEnvironment Agency (formerly Sussex Univ) Callum FirthUniversity of Brighton Chairman Richard YoungRYE Consultancy + Andy ArnoldEast Sussex County Council Scott FergusonCapita Symonds 3

4. The Cuckmere Estuary Mouth East Cliff East Beach West Beach Coastguard Cottages West Cliff 4

5. Shoreline changes – 1874 to 1997 5

6. Position of mouth – 1783 to 1958 6

7. Canalisation of estuary 7

8. The processes at work now 8

9. Existing conditions Limited input of shingle (if any) Infilling of channel; flood risk to people upstream Vulnerability of West Beach Need for re-cycling Holding the line (keeping the existing flood banks) Increasing need for re-cycling as sea levels rise Increasing vulnerability of West Beach as well Realignment (losing the banks, managed or unmanaged) Reduced (possibly eliminated) need for re-cycling Greater vulnerability of West Beach as a result Possible movement of mouth as structures deteriorate West Beach revetment Protect valley edge (if necessary) rather than beach Allow beach to re-align naturally The key conclusions 9

10. Any questions ? 10