How do you prevent coastal erosion?

Answer 1

The most effective method is to construct a wall of 'Rock Armour' across the coast. However, this method is very expensive and difficult to place. It consists of a 'wall' of large quarried rocks that stretch across a coastline.

A more affordable method is to place a series of 'Groynes' across a beach to prevent Longshore Drift, ensuring that the sand on a beach does not get swept away to a single side of a beach. These 'Groynes' resemble fences that run down a beach to the sea.

Another way is similar t the Rock Armour, but is however constructed of wood. These is much cheaper, but much less reliant and is notorious for being destroyed in large storms.

Artificial harbours are also possible to construct, but these too are very expensive.

My expanded bit - written by Oopsydaisy12 Another way to prevent coastal erosion is with a sea wall. A sea wall is extremely expensive and ugly, but it lasts a long time and does it's job properly. Its made out of concrete and runs along side the cliff face. Also beach replenishment which helps to prevent the loss of sand or pebbles on beaches, during long shore drift. This is where tons of beach material is shipped over to the beach and spread over the other sand. It's expensive but not too expensive but it needs updating regularly.