Building Bridges Across Borders to co-develop flood early warning in the Sahel

Floods are becoming more frequent and damaging in the Sahel. This study examines how early warning systems for floods can be developed jointly across borders. Using a real experience between Niger and Burkina Faso, the paper shows that working together with institutions, communities, and decision makers improves not only services, but also cooperation, trust, and long-term sustainability. The study offers practical and methodological guidance for managing flood risks in shared river basins.