Study of the effects of check dam construction on the Limau Manih river using GIS Darwizal Daoed, Fifi Novia Azhari, Masril Syukur and Rudy Ferial E3S Web Conf., 331 (2021) 08007 Published online: 13 December 2021 DOI: 10.1051/e3sconf/202133108007