(181020) -- NYINGCHI, Oct. 20, 2018 (Xinhua) -- Photo taken on Oct. 20, 2018 shows the Dalin bridge damaged by rush of water from a landslide-caused barrier lake on the Yarlung Tsangpo River in Menling County, southwest China's Tibet Autonomous Region. Water levels are dropping after an overflow at a barrier lake formed after a landslide in the Yarlung Tsangpo River in southwest China's Tibet Autonomous Region, local officials said Friday. TO GO WITH: Water level in Tibet barrier lake drops after overflow. (Xinhua/Chogo)