How does climate change impact floods in France? Using simulations for 3727 rivers with climate projections, results show that flood trends vary depending on the region. In the north, floods may become more severe, but in the south, the trends are mixed. Floods from intense rainfall are becoming more frequent, while snowmelt floods are strongly decreasing. Overall, the study shows that understanding what causes floods is key to predicting how they are likely to change with the climate.