AgrHyS is one of the 25 Environment Research Observatories (ERO) recognised by the French Ministry of Research in 2002. The ERO AgrHyS aims at studying the response time of hydro-chemical fluxes to the evolution of AgroHydroSystems.
It is part of the System for Observation and Experiments for Research on Environment (SOERE) RBV (Catchment Networks) on Critical Zone.
An AgroHydroSystem is considered as a catchment that is influence by agricultural activity.
The ERO AgrHyS is conducted by the laboratory INRA-Agrocampus Sol, Agro-hydroSystems of Rennes. Two other labs, Geosciences Rennes and COSTEL Rennes, are associated to the ERO AgrHyS. It is part of the observation set-ups of the Observatory of the Sciences of the Universe of Rennes OSUR.