Jetties

Shoreline erosion is influenced by the local factors
Proximity to sediment-laden rivers
Degree of tectonic activity
Topography and composition of the land
Prevailing wind and weather patterns
Configuration of the coastline

Responses to erosion problems
Hard stabilization – building structures
Types of structures
Groins – barriers built at a right angle to the beach that are designed to trap sand
Breakwaters – barriers built offshore and parallel to the coast to protect boats from breaking waves
Seawalls – Armors the coast against the force of breaking waves
Often these structures are not effective