Sand excavated from the ocean is used for beach restoration and land reclamation. The most successful restoration projects use all three techniques to add redundancy.This includes both the excavation and removal of a variety of materials – sediment, sand, rock and debris – from waterways, such as harbours, ports, lakes and rivers, usually for the purpose of deepening or cleaning them. Planting and fencing projects are often less expensive than building up the dune. ![]() Planting and fencing projects are often referred to as dune stabilization practices, but all three techniques fall under the umbrella of dune restoration. There are three major types of dune stabilization techniques: importing dredged sand from offshore to build up the dune, planting grasses or other plants to secure the sand, and installing fencing along the dune on both the seaward and landward sides of the dune. Beach restoration, beach replenishment, beach nourishment, and beach renourishment are all terms used to refer to this action.ĭune restoration also aims to offset sand erosion but may also include increasing dune size and resilience. Finding a similar grain size to the sand that is already in the beach/dune system is the most important consideration when adding sand dredged from offshore because the wrong sized sand grains can be easily re-dispersed due to wave action specific to an area. ![]() It is usually completed by dredging offshore sand and adding it onto the beach. Beach restoration in the Gulf of Mexico aims to replace sand that erodes from a beach.
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