Using stable isotopes to understand hydrochemical processes in and around a Prairie Pothole wetland in the Northern Great Plains, USA

► A stable isotope study of the hydrochemistry of a Prairie Pothole wetland system. ► δ18OH2O and δ2HH2O values show salt concentration by transpiration at wetland edge. ► A range of δ34SSO4 values indicate SO4 source and reduction processes. ► Isotopic mixing lines show interaction of surface and groundwater at wetland edge.