Headwater stream geochemical data from southeast Sweden, 2016-2017

About 100 headwater streams in SE Sweden were sampled during three consecutive seasons (Summer, autumn, and spring) in 2016 and 2017, to monitor seasonal changes in the geochemical composition of the stream waters. All water samples were analysed for their geochemical element composition (70+ elements). Water samples in southeastern Sweden were taken in August/September 2016, November, and December 2016 and March, and April 2017. The water samples were taken in headwater streams no longer than 2.5 km, without lakes and urban areas, and with less than 5% agricultural land in the catchment (more details can be found in Löfgren et al., 2014 (10.1007/s10661-014-4054-5) and Conrad et al., 2019 (10.1021/acsearthspacechem.9b00237). The data contain more than 70 element concentrations on mostly unfiltered water samples, measured with ICP-MS.