Water quality data from the River Wensum, UK, 2010-2016

All water samples were collected in the field by the authors. All hydrochemical data were generated by the University of East Anglia’s Science Analytical Facilities (https://www.uea.ac.uk/about/faculties-and-schools/faculty-of-science/facilities). To ensure data quality, instrument accuracy and limits of detection were tested every batch via certified reference materials, whilst instrument precision was tested via repeat measurements. Any analysis runs which fell outside acceptable tolerances for accuracy and precision were reanalysed after recalibration of the instrument. All data were checked manually for errors prior to acceptance.