The Watershed Research and Experimentation of Real Collobrier is a privileged site for the observation and the study of the water cycle in the Mediterranean forest. It is a landmark site of the hydro regional climatology where many cognitive approaches have been carried out. Observation network allows the study of phenomena with a particularly fine scale, which makes it an ideal laboratory for the development of methodologies directly applicable in operation al hydrology.
The watershed is instrumented since 1966. It has long chronic hydro-climatic data for fifty years, with 15 rain gauges and 7 flow gauges. Climatology and physico-chemical measurements are also carried out continuously. The multidisciplinary approach, associated with specific experiments, allows a deepening of our understanding of the interaction soil-water-atmosphere.