Almost half of Europe is at risk of drought. Wetlands as nature-based solutions can store water and help mitigate the consequences of droughts. These vital ecosystems store around 15% of the Earth’s freshwater and have the potential to recharge local aquifers. However, evidence-based practices regarding costs, benefits, and acceptance of using wetlands for droughts are lacking, especially for different conditions in Europe. NBS4Drought aims to close that gap by collecting scientific, economic, and social evidence from seven wetland sites across Europe