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Why are we here?
’70s
escarpments,erosion
’70s
Narrowbeaches
’80s
’80s
1990
Marram grass, reed and willowbranches
Foreshore nourishment
Beach nourishment
Why manage? safety standards for floodprotection
<-100m ->
Dunereinforcement
Reference coastline (1990)
• Sand nourishments on beach and foreshore
• Adding a lot of sand to achieve a dynamic equilibrium
• Coastline retreat was stopped
• Further loss of land prevented.
• Morphological changes: foredune development, locallynarrow beaches due to dune growth
• Difficult to manage,
Local blowout at Wassenaar : monitoring morphological changes
Present day
Present day
Present day
Present day
• Less storm damage (fewer storms?)
• Predominantly limited to foredunes
• System (sand volumes) restores itself -> cheap, but unpredictable and difficult tot manage
• Will it last?
• can we benefit even more from the dynamic processes?
• How does it really work?
