Morphometric and hydrological features of the lakes of the Sergachsky municipal district (Nizhny Novgorod region, Russia)Andrej Astashin, Olga Vatina, Oleg Pashkin, Mikhail Badin and Natalia VinokurovaE3S Web Conf., 480 (2024) 02020DOI: https://doi.org/10.1051/e3sconf/202448002020