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Dawlish & Exmouth Beach Management Scheme Update to South West - - PowerPoint PPT Presentation
Dawlish & Exmouth Beach Management Scheme Update to South West - - PowerPoint PPT Presentation
Dawlish & Exmouth Beach Management Scheme Update to South West Regional Coastal Monitoring Programmes Annual Partners Meeting, 8 October 2013 Richard Cox, EA Recent Context South Devon and 2010 Dorset SMP 2 2010- Exe Estuary FCRM
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Dawlish Warren and Exmouth Beach Management Scheme – Indicative Timescales
Planning stage Project appraisal stage Detailed design stage Construction stage Post-construction performance stage
April-July 2013 Now 2013-2014 2015-2016 2015-2018 After 2018
Pre and post monitoring
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Background behind the Scheme
Exe Estuary Strategy PAG Partnership
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Background – Exe Estuary FCRM Strategy
Public consultation on the Exe Estuary FCRM Strategy in February-March 2013 Approval during 2013-14 Five priority schemes identified to be progressed in the next 5 years Dawlish Warren and Exmouth Beach Management Scheme
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Dawlish Warren – Strategy Outcomes
Dawlish Warren village is currently at ~4% annual chance of tidal flooding Sand spit shelters the wider estuary, particularly Starcross and Kenn Valley but is eroding Economic justification to improve FCRM assets relating to Dawlish Warren village, and avoid loss of control of sand spit distal section prior to 2030 Address SSSI ‘unfavourable declining’ condition, and avoid interfering with natural processes Avoid impacts to SAC (primarily related to humid dune slacks and petalwort, also white and grey dunes)
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Exmouth – Strategy Outcomes
Erosion of beach in front of and to the east
- f the Maer threatening seawall, road and
nature reserve No economic justification for full FDGiA funding
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Dawlish Warren and Exmouth BMS – Strategic Option
Dawlish Warren
Localised embankment raising near Visitor Centre Beach recharge/recycling Groyne works Phased gabion removal
The Maer, Exmouth
Beach recharge/recycling Groyne works
0.75m embankment raising.
Key Sub-tidal Intertidal 10-1% AEP EWL 1-0.1% AEP EWL >0.1% AEP EWL SAC outline Indicative sand spit outline Commentary
Beach recharge, recycling and groyne maintenance. First phase of gabion removal. Second and third phase of gabion removal.
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Marine Survey
Survey being undertaken through TDC’s Framework Bathymetry CPT Vibro-coring Sampling Testing Complete by November 13
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