Major rivers, waterways and reservoirs in China's Guangdong province are threatening to unleash dangerous floods, forcing the government on Sunday to enact emergency response plans to protect more than 127 million people, Reuters reported. Calling the situation "grim", local weather officials said sections of rivers and tributaries at the Xijiang and Beijiang river basins are hitting peak water levels that only happen once in 50 years, according to state broadcaster CCTV news on Sunday.