BRE14: Recharge Your Beach! Mapping to Anticipate

Where, when, and how are beaches replenished with sand or pebbles? Beach nourishment is a common but often undocumented practice used to protect coastlines from erosion and rising seas. Yet, it remains largely invisible in public data and long-term monitoring efforts. This challenge aims to detect and map these interventions using satellite imagery, orthophotos, and other available data sources. By identifying visible changes, estimating deposited volumes, and analyzing patterns over time, the project will shed light on the frequency, scale, and spatial dynamics of coastal recharges. The goal: to build a shared, open understanding of this practice and contribute to better-informed decisions for coastal resilience and sustainability.