This study focuses on addressing soil erosion and phosphorus (P) runoff, critical issues for agricultural sustainability and water quality. Conducted in the Hydrological Open Air Laboratory (HOAL) in Petzenkirchen, Austria, the research aims to identify fields prone to erosion and predict future sediment and P loss under different scenarios. The 60-hectare HOAL catchment, typical of Austria’s Alpine foothills, offers diverse land use and extensive historical data, making it ideal for such investigations.Using data from 2010 to 2020, the study examines factors like soil management, fertilizer use, and erosive rainfall events. Advanced geospatial and statistical techniques, including GIS tools and regression models, will help map erosion-prone areas and identify key drivers of sediment and P loss. The research aims to produce risk maps that inform land management decisions, helping to reduce sediment and P loss from high-risk fields. These findings will support sustainable agricultural practices and be useful for policymakers, farmers, and environmental scientists working to balance productivity with environmental protection.