GREEN OPTIONS

Coastal setback zones

Description A coastal setback zone is a buffer area where certain or all types of development are prohibited or significantly restricted. A setback zone is usually defined by a specific distance from the shoreline,

GREY OPTIONS

Seawalls and quays

Description Seawalls are structures made of hard material (e.g. stones, concrete, masonry or sheet piles), built to protect the inland area against wave action and to prevent coastal erosion. Seawalls also serve to stabilize

GREEN OPTIONS

Dune construction and strengthening

Description Dune erosion results from wind and wave action. It is a natural phenomenon that can be worsened by human activities such as dune levelling to build urban settlements, parking-lots, promenades, etc. This contributes

GREY OPTIONS

Storm surge gates / flood barriers

Description Storm surge gates/flood barriers are fixed installations that allow water to pass in normal conditions, and have gates or bulkheads that can be closed against storm surges or spring tides to prevent flooding.

GREY OPTIONS

Cliff stabilization and strengthening

Description Coastal cliff stabilisation techniques are ‘green’ measures to reduce cliff erosion and its consequences – landslide, collapse, falling of rocks – compared to cliff strengthening techniques that are ‘grey’ measures. Decisions on which