On Saturday 19 May 2018, the Grand Bassin de l'Oust took part in the Sport and Nature event held in Ploërmel, allowing them to communicate with the general public about the activities and case studies of the CPES project around Lac au Duc. The GBO stand was situated close to the Lake and its beach, there was a strong emphasis about what impact and problems cyanobacteria causes on the price of drinking water and swimming.
In collaboration with all the CPES partners an exhibition was created to cover the main outcomes of the project, including the watershed and actions on the lake; this was displayed alongside a poster loaned by the University of Rennes 1 on cyanobacteria species and the watershed model. Alexandra Morin, Julia Cadic (GBO) and Josselin Canet from INRA talked to the visitors about the European cooperation taking place on the lake and five other catchment areas. This opportunity allowed INRA to refine information and will aid in the process of writing a survey aimed at users who will use the lake later in the season.