Channel processes of a small river heavily modified by human activities Aleksandr Varenov, Anna Tarbeeva, Dmitriy Botavin, Nadezhda Mikhaylova, Leonid Turykin and Aleksandra Chalova E3S Web Conf., 163 (2020) 06011 Published online: 17 April 2020 DOI: 10.1051/e3sconf/202016306011