Long-term water quality monitoring using Sentinel-2 data, Głuszyńskie Lake case study

This study shows results of long-term inland water monitoring using Sentinel-2 data for Głuszyńskie Lake in year 2015–2022. Four water quality parameters: biological oxygen demand (BOD), dissolved organic carbon (DOC), chlorophyll concentration (CHL) and electrical conductivity (EC) were calculated according formulas found in literature. Results were validated based on measurements conducted in 2021 and 2022, for BOD, DOC and CHL high determination coefficients (0.77 and 0.79) were observed, for EC determination coefficient was equal to 0.45. Results shows that empirical formulas can be used for qualitative analyses of inland water quality, for quantitative analyses more extensive field work need to be performed.