InfoNappe is an Android application developed by BRGM that provides access to groundwater level data. The data is available on the ADES (Accès aux Données sur les Eaux Souterraines) portal, which collects information on groundwater levels and quality in France. The app allows users to view a list or map of nearby water level monitoring stations within a predefined radius or specific sector. The app also provides a graph showing the evolution of water level associated with statistical data, such as the highest and lowest water levels. These data are available for each water level monitoring station in the ADES database. Additionally, users can access detailed information about each water point on the ADES website. If you have any questions about the application, you can submit them through the BRGM assistance website.