Spirin Yuri A. RussiaKaliningradImmanuel Kant Baltic Federal University, Institute of Nature Management, Territorial Development and Urban Planning, 2 Zoologicheskaya St., Kaliningrad 236022, Russiaspirin1234567890@rambler.ru Author's articles Assessment of the geoecological state of surface watercourses in the Slavsky district, Kaliningrad region (summer hydrological season)