Tags water levels Low water levels cause losses for hydropower firms Thursday, Apr 30, 2020 Low water levels have hit revenue and profit at hydroelectric plants in the first quarter. Surge in Red River hurts crops Friday, Oct 16, 2015 After hydrologists warned last week that huge discharges of water from Chinese reservoirs upstream would flood the Hong (Red River) in the north, water levels have risen sharply, damaging ships and destroying crops.