Climate actions
Seawalls are usually massive structures designed to resist storm surges. The height of a seawall will at least cover the difference between the beach level and the mainland, though commonly seawalls are built higher to protect the land against wave overtopping. Seawalls are also used to stabilize eroding cliffs and protect coastal roads and settlements. The crest of the wall often extends into a stone covered part that may be used for a road, promenade or parking area. A seawall creates a distinct separation between the beach and the mainland. Seawalls are often found in the case of narrow or steep beaches, where a typical breakwater is either too large or too costly. High costs for realisation. It can also have negative impacts on the tourism sector as the landscape can be negatively affected by seawalls.
Installation of seawalls
Objective
Protect the inland area against wave action and prevent coastal erosion.
Description
Expected results
Decreased coastal flooding and erosion.
Result indicators
Area of protected coast [m²]
Involved actors
National and local government, local communities.
Expected timeline for action
Criticalities
Scope of the action
Type of proposed actions
Sector of action
Climate impacts
Implementation scale