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Dunbar East Beach

Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

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Page 1: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Dunbar East Beach

Page 2: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009
Page 3: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009
Page 4: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Established in 2011 as a Tenants’ and Residents’ Association Supported by East Lothian Council

Page 5: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

We now have over 60 members

Page 6: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

WE had a lot on our minds…

…and in the first three years we got busy.

Page 7: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Lots of kelp

And flies And smell

Page 8: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

but also loads of kelp…

Page 9: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Stench of rotting weed.. reached the High Street

Page 10: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Kelp dumps breeding flies that infested homes

Page 11: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Rotten seaweed polluting pools

Page 12: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Civic Week - June 2013

Lots of sand…

Page 13: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

May 2014

Page 14: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

+ REGULAR SUMMER BEACH CLEANS + GARDENING

Page 15: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Keep Scotland Beautiful – Rural Seaside Award 2012,2013,2014 Beach Management by volunteers working with ELC Landscape and Countryside

Page 16: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009
Page 17: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Sewage pipe exposed by storms

Fetch from North East is longest, so waves are most destructive

The North Sea has warmed 2 degrees in 50 years

Page 18: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

East Beach 2015

Page 19: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

2015

DSHNG start Beach Regeneration Project

Page 20: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009
Page 21: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

2001 Beach is…disgusting, sea weed and sand loss

Page 22: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Major report by Babtie Group Report by Engineer, Nigel Pontee

Page 23: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009
Page 24: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009
Page 25: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

100 year time line – based on anecdote from 1960 onwards

Babtie - Sand loss commentary…

Groyne in good condition – c 150m long

Page 26: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

East Beach groyne – 1930s

Page 27: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

100 year time line – based on anecdote from 1960 onwards

1992 – 1994 New sewage interceptor.

Groyne reinstated

Page 28: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

BABTIE REPORT to ELC – 2002 Recommended Actions – One off…..

Page 29: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

BABTIE REPORT to ELC – 2002 Recommended Actions – One off…..

Page 30: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009
Page 31: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Beach erosion seems to have commenced before sewage pipe works Progressive deterioration of groyne may have increased SE loss of sediment Transport driven by change in wind climate from 1960 – 1990 with concomitant

change in wave height/direction Rise in sea level may have led to increase in wave energy Accretion since 2002 could be explained by a period of reduced sea level rise

due to the 18.6 year lunar modal cycle, or decreased wave heights

Page 32: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Our key question… how to get our beach back again

Page 33: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009
Page 34: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

2002 – 2009 No action taken

Beach regenerated itself

Page 35: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

East Beach groyne – 2010

Page 36: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

East Beach – 2010

Page 37: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

2002 – 2009 No action taken

Beach regenerated itself

March 2010 Severe storms

No obvious sand loss

Page 38: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

2002 – 2009 No action taken

Beach regenerated itself

March 2010 Severe storms

No obvious sand loss

Dec 2013 – Jan 2014 Wettest winter on record Severe sequential storms

Significant sand loss

Page 39: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009
Page 40: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009
Page 41: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009
Page 42: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

East Beach groyne – Feb 2015

Page 43: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

2015

Page 44: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

2002 – 2009 No action taken

Beach regenerated itself

March 2010 Severe storms

No obvious sand loss

Dec 2013 – Jan 2014 Wettest winter on record Severe sequential storms

Significant sand loss

Spring 2014 Severe storms

Significant sand loss

2014 – 2015 Continuing sand loss Access not possible

from Cromwell

2016 No action taken

Beach regenerating itself???

Page 45: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

October 2016

Page 46: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Regeneration Approaches Further consultant study/modelling

Too costly at a cost of £300,000

Live Trial based on best guess Possible and sensible if expectations are managed

Moderate impact of Scottish Water sewage interceptor pipe

Add defensive mattress Re-profile beach to pipe upshore to improve appearance

Page 47: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Pipe haunching and beach reprofiling - £60k

Page 48: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009
Page 49: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Key factors affecting sand loss Storm action

Uncontrollable

Offshore sand reservoir lost? Uncontrollable

Scottish Water sewage interceptor pipe

Must be retained Scour at pipe could potentially be moderated

Groyne loss

Could be reinstated but prone to short life No positive evidence that it impacts on sand accretion May create wave rebound from Cromwell Harbour

Page 50: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Estimated cost - £120k

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Page 51: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Regeneration Approaches Further consultant study/modelling

Too costly at a cost of £300,000

Live Trial based on best guess Possible and sensible if expectations are managed

Moderate impact of Scottish Water sewage interceptor pipe

Add defensive mattress Re-profile beach to pipe upshore to improve appearance

Experiment again with groyne

Reinstate but as concrete ‘biowall’

Import sand – dredge material

Page 52: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Estimated waste of money? LOTS

East Beach bay is too shallow to bring in a dredger

Pumping material over long distance is expensive

Recharge material suitable for a beach is likely to be expensive

Time scale uncertain Cost may be up to £1m….. And ... That good old Sea God could take it away at any time!

Page 53: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Regeneration Approaches Further consultant study/modelling

Too costly at a cost of £300,000

Live Trial based on best guess Possible and sensible if expectations are managed

Moderate impact of Scottish Water sewage interceptor pipe

Add defensive mattress Re-profile beach to pipe upshore to improve appearance

Experiment again with groyne

Reinstate but as concrete ‘biowall’

Import sand – dredge material Too costly at estimated £1m+ At risk of loss at first storms

Plan for the future to generate an amenity beach – rocky

or not

Page 54: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Regeneration Approaches

Plan for the future to generate an amenity beach – rocky or not+-

Good value at £200k

Will guide approach to sea defence design and repair

Will show that we love our beach!

Page 55: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Estimated build cost…..£200k - £1m???

Page 56: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Dunbar East Beach - 2016

Page 57: Dunbar East Beach - Forth Estuary Forum · 2017. 1. 9. · Established in 2011 as a Tenants’ and Residents’ Association ... East Beach groyne – Feb 2015 . 2015 . 2002 – 2009

Our target…the beach is back!