Design of new coastal defence system to stop erosion in Georgia
Published: 14 January 2015
Sediment hunger exacerbates erosion
Coastal erosion is mainly cauased by a smaller amout of sediments being deposited on the coastline. The Chorocky River used to transport large amounts of sediment to the coast. As a result of the natural displacement of the river, and the building of new dams along its course, “sediment hunger” has become a challenge. Project leader Alessio Giardino of Deltares: “In technical terms, this is a difficult project because there are two deep canyons just in front of the coast. That means, for example, that it is not easy to build groins or robust hydraulic engineering structures. We are going to study the causes of the coastal erosion, drawing on past studies at the same time. On the basis of the results, we will be able to identify the required measures and we will carry out model calculations for the coastal defence system. Alongside the hard solutions, we will also be looking at possible soft solutions that make smart use of sediment.”
The project is being financed by the Asian Development Bank (ADB) and conducted by the Municipal Development Fund of Georgia (MDF).