The paper provides an assessment of the geoecological state of surface watercourses in the Slavsky district, Kaliningrad region in the summer hydrological season. For this purpose, the choice of watercourses for research was carried out, which, in aggregate, could characterize the river network of the Slavsky district as a whole, they were: r. Zlaya, r. Shluzovaya, r. Nemoninka and r. Osa. Water samples were taken for hydrochemical analysis and the hydrometric characteristics of the rivers were measured.
