Chilean coastline faces progressive beach erosion

Chilean beaches are experiencing progressive surface reduction due to coastal erosion, according to the Climate Risk Atlas from the Ministry of Environment. This transformation is particularly evident in sectors such as Valparaíso, Viña del Mar, and Algarrobo.

Experts note that while the sea traditionally followed a cycle of removing sand in winter and returning it in summer, increased frequency and intensity of swells mean many beaches no longer have time to recover. This issue is compounded by human interventions, including coastal urbanization, river channeling, basin alterations, and dune interference, which have reduced the natural supply of sediments.

In the Valparaíso Region, erosion rates vary by location. Caleta Portales has recorded retreats exceeding one meter annually, while Algarrobo and Santo Domingo face even more critical conditions. The physical changes include narrower sand strips and exposed access points.