“…The annual summary of data for selected constituents provides the MDNR with current information to assess the quality of surface water within the State. This report is one in a series of annual summaries (Otero-Benitez and Davis, 2009a, b;Barr, 2010Barr, , 2011Barr, , 2014Barr, , 2015Barr and Schneider, 2014;Barr and Heimann, 2016;Bartels, 2018, 2019;Kay, 2019Kay, , 2021Buckley 2022). Data on the physical characteristics and water-quality constituents in samples collected during water year 2021 are provided in figures and tables for 72 surface-water stations throughout the State.…”