Method of restorating water level of small riversEvgeny Kuznetsov, Anna Khadzhidi, Larisa Motornaya, Kharlampiy Kilidi, Maxim Filimonov and Lyudmila KravchenkoE3S Web Conf., 273 (2021) 05007DOI: https://doi.org/10.1051/e3sconf/202127305007