Niklas Ruf and Jana Spiller from Germany recently received the prestigious Stockholm Junior Water Prize 2025 for their work on developing a scalable flood warning system for small streams. H.R.H. Crown Princess Victoria of Sweden presented the winners with their award during a ceremony at Stockholm City Hall as part of World Water Week in Stockholm.
Flooding is an increasing concern worldwide, with more frequent and larger floods affecting communities. Yet on smaller streams, real-time data is often lacking, limiting the possibility of early warnings. Over four years of work, Ruf and Spiller created a network of sensors linked to an














