We focus on how rising seas could affect local communities, landmarks, and coastlines under an extreme sea-level rise scenario, used to plan the construction of the Thames Barrier in London, UK.

Using publicly available elevation data, our app provides a simple interface so everyone – from students to planners – can better understand coastal innundation risks. This knowledge can help communities prepare, adapt, and make informed decisions about the future.

While the app is not meant to replace formal flood defense studies, it’s an easy‐to‐use educational tool to see the big picture of potential climate change impacts on sea levels.