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Groins
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Groins
A groin is an artificial structure that is built on the ocean and is perpendicular to the shore.
Groins are different from breakwaters in that they do not create harbors. Groins do not provide
shelter to vessels, yachts, and fishing boats. Instead, a series of groins functions to catch
sediments brought about by the longshore drift in the surf region (Hanson et al., 2001). They are
made from stone, wood, or concrete. In addition, the wave energy pattern and the local beach
slope determine the distance between each groin.
Groins are stabilization structures that help fight erosion on beaches and protect human
constructions on land near the beaches. They have significant effects on the shoreline and can
destroy, improve or create surfing waves and surf breaks. Groins are also valuable for shaping
the coastline and changing the movement and behavior of sediments and sand. The setting up of
groins on beaches is controversial because they have both advantages and disadvantages.
Groins help control erosion and protect people’s properties, but they have ...