Data of type chemistry measured on La Loire basin within the framework of the VAL D'ORLEANS observatory, that is part of the KARST observatory network. The KARST observatory network aims to strengthen knowledge-sharing and to promote cross-disciplinary research on karst systems, in the framework of the OZCAR Critical Zone network Research Infrastructure. Data consist in 26 time series on 2 station(s). The measured parameters are: Ammonium (mg/L), Bicarbonate (mg/L), Calcium (Ca) - Major ion (mg/L), Chloride (Cl) (mg/L), Delta-H-2 (‰ SMOW), Delta-O-18 (‰ SMOW), Magnesium (Mg) - Major ion (mg/L), Nitrate (mg/L), Nitrite (mg/L), Potassium (K) - Major ion (mg/L), Silica (SiO2) (mg/L), Sodium (Na) - Major ion (mg/L), Sulfate (mg/L), Suspended solids (mg/L). Measurements start on 13-10-1979 and end on 17-06-2019

Data of type physico-chemistry measured on La Loire basin within the framework of the VAL D'ORLEANS observatory, that is part of the KARST observatory network. The KARST observatory network aims to strengthen knowledge-sharing and to promote cross-disciplinary research on karst systems, in the framework of the OZCAR Critical Zone network Research Infrastructure. Data consist in 13 time series on 2 station(s). The measured parameters are: Conductivity (µS/cm), Dissolved organic carbon (DOC) (mg/L), Dissolved oxygen (mg/L), pH (units), Turbidity (NTU), Water temperature (°C). Measurements start on 05-10-1979 and end on 27-01-2025

Data of type hydrology-hydrogeology measured on La Loire basin within the framework of the VAL D'ORLEANS observatory, that is part of the KARST observatory network. The KARST observatory network aims to strengthen knowledge-sharing and to promote cross-disciplinary research on karst systems, in the framework of the OZCAR Critical Zone network Research Infrastructure. Data consist in 2 time series on 1 station(s). The measured parameters are: Discharge (m3/s), Water table elevation (m ASL). Measurements start on 26-10-1965 and end on 27-01-2025