Home to four remarkable aquatic species, the Airou basin has been classified Natura 2000. Initiated by the European Union in 1992, Natura 2000 is a network of European sites. The aim is to guarantee a favorable conservation status for natural habitats and species of Community interest. There are over 1,750 such sites in France. Since 2007, the Syndicat Intercommunal d’Aménagement et d’Entretien de la Sienne (SIAES) has been responsible for managing the bassin de l’Airou site.
His main actions have been, for example, the implementation of a restoration and maintenance program for the Airou and its tributaries, agro-environmental measures (agricultural subsidies for farmers who manage their plots in a more extensive way) and the regional declination of the National Action Plan in favor of the Pearl Mussel.