The dataset contains hydrochemistry (temperature, specific conductivity, pH, dissolved oxygen) and nitrate-N in the Houzhai catchment (Southwestern, China). Three karst springs were investigated. Data were obtained via sensor approach with 15mins time interval between May 2016 to October 2017. Full details about this dataset can be found at https://doi.org/10.5285/f70596a1-0994-4b08-abab-0c9398af447d
