Consult in such cases a geotechnical specialist. In a number of cases, the coastline is not eroding at all. In this case the problem is not stop erosion, but to create a new, artificial beach. The method followed in that case is described in the section nourishment . Also it may be that the position of the coastline is only fluctuating, because of variations in the weather.
Coastlines always fluctuate.
Therefore one should also give the coast the opportunity to fluctuate. This means that constructions never should be constructed too near to the waterline. That is asking for trouble. Chronic erosion is a type of erosion which coninues every year, the quantity per year is not so much, but the process always continues. Chronic erosion is not spectacular, and you seldom read something in the newspapers, while acute erosion is always covered by the press.