Practice of permanent presence and equipment of Karshi main canalOleg Glovatskiy, Rustam Ergashev, Ilhom Kurbonov, Boybek Kholbutaev, Ilkhom Pirnazarov and Adkhamjon RajabovE3S Web of Conf., 401 (2023) 01022DOI: https://doi.org/10.1051/e3sconf/202340101022