Floodup is a citizen science project dedicated to exploring and documenting the impacts of natural hazards and climate change, with a particular emphasis on flood events. The project encourages active public participation to help build a comprehensive historical and real-time database of observations and impacts. Through Floodup app, citizens can contribute valuable information about recent, ongoing, or historical episodes, such as floods, extreme precipitation, or other weather-related risks. Participants are invited to upload photographs, videos, written accounts, and instrumental data, always ensuring their own safety when collecting information. The platform also welcomes submissions of community experiences, damage reports, and resilience stories, which provide essential context to understanding local vulnerability and adaptive capacity. Beyond data collection, FloodUp serves as a resource hub for learning and engagement. The website features educational sections, such as “Discover” for basic questions and preparedness, and “Learn” for experimental content and deeper exploration. Interactive maps display user-submitted observations in real time; practical exercises and curated resources support ongoing education about hydrometeorological risks. The information gathered through Floodup is vital for validating meteorological models, improving risk assessment tools, and developing more effective strategies for risk reduction. Detailed citizen data enhances the scientific community’s ability to predict, monitor, and respond to future events, ultimately fostering greater community resilience in the face of climate change and natural hazards. Floodup remains open to all participants and welcomes any type of contribution. By joining, citizens play an important role in shaping our collective understanding and preparedness for tomorrow’s natural risks.