RiverData.org

RiverData.org is a free public web application for exploring river and reservoir conditions across Europe. It combines official river gauge readings, reservoir status, forecasts, and long-term flow analytics in one transparent multilingual map. Instead of asking people to navigate many national portals with different layouts, terms, and update cycles, RiverData.org presents water information through a consistent interface while retaining the context needed to understand each value. The project is designed for residents, researchers, journalists, environmental organizations, educators, and water professionals who want a clearer view of European waterways. Users can move between countries, basins, rivers, gauges, and reservoirs, inspect the latest reported conditions, and compare them with historical patterns. Charts and map layers help reveal changes over time, while explanatory notes clarify whether information comes from an observed station, a forecast model, or a climatological comparison. Key features include live official river gauge readings, reservoir condition tracking, river forecasts, long-term historical analytics, interactive maps, and multilingual access. RiverData.org also emphasizes data provenance. It identifies official public sources and explains important limits so that a model value is not mistaken for a legal threshold or an observed measurement. That transparency makes the service useful when people need to communicate water conditions accurately. A resident can check a nearby river before planning an activity. A journalist can review recent changes and place a current reading in historical context. A researcher can discover relevant gauges and compare patterns across basins. A water professional can use the unified map as a fast orientation layer before consulting the original authority. Educators and civic organizations can use the visual interface to explain drought, floods, reservoirs, seasonality, and climate-related variability. The application is free to use and does not require a paid subscription. It is operated as a public-interest data project by Terra 2100. RiverData.org does not replace national authorities, emergency services, or professional hydrological analysis; it makes their public information easier to discover and understand. By bringing scattered sources together and clearly separating observations, forecasts, and historical context, the project reduces friction without hiding uncertainty. The result is a practical European water intelligence service that supports better questions, clearer reporting, and more informed public discussion. RiverData.org is especially valuable when conditions change quickly or when a story crosses borders. A consistent multilingual experience lets users compare places without first learning a different portal for every country. The project continues to expand coverage and improve explanations as additional official sources become available. Its goal is simple: make trustworthy European river and reservoir data easier for everyone to find, interpret, compare, and share.