The Rain Albion Isotopic Network (RAIN) project is a participatory science project that forms part of the science and society initiatives of the GeEAUde partnership chair. It aims to improve our understanding of how the Fontaine de Vaucluse spring works by deploying a network to monitor the isotopic ratio of rainfall on the Albion plateau, which is the catchment area for the Fontaine de Vaucluse spring. This document is a report sent to project participants (mostly individuals) after six months of monitoring.