The rainfall of the Roujan (Hérault) catchment area has been acquired since 1992 through various measuring points on which sensors are positioned on a long-term and continuous basis. The data from these sensors are directly recorded on servers in Montpellier through remote transmission. Verification treatments and possible corrections are applied before the data sets are integrated into the HYSAE database. Through the OMERE data portal accessible from this sheet, the data can be downloaded from an interactive map. In addition to these raw data rainfall records, a so-called "synthetic" time serie is elaborated to provide a complete and uninterrupted chronicle of rainfall data representative for the catchment area..

Physico-chemical data of throughfall precipitations under a beech stand planted between 1825 and 1845. A sample is taken every fortnight for laboratory analysis. Parameters measured are pH, conductivity (µS/cm), Dissolved Organic Carbon (DOC, ppm), alkalinity (meq/l) and molar concentrations of Na+, K+, Ca2+, Mg2+, NH4+, Cl-, NO3- and SO42- (µmol/l).