Analysis of the environmental consequences of hydro construction in the 20-50s of the XX century in the Terek basinEmma Abanokova, Aubekir Khatukhov, Petr Kuzminov and Rasul GurtuevE3S Web Conf., 614 (2025) 04002DOI: https://doi.org/10.1051/e3sconf/202561404002