Assessment of the ecological state of the surface waters of the Nikitinsky fish passage channel during dredging workSergey Strelkov, Ludmila Boronina, Andrey Sorokin, Kirill Kondrashin and Roman PetrovE3S Web Conf., 135 (2019) 01016DOI: https://doi.org/10.1051/e3sconf/201913501016