At least two buildings have been destroyed and residents of others have been evacuated in Juneau after flooding caused by a release of water from a glacier-dammed lake, officials said Sunday.
The Mendenhall River flooded Saturday because of a major release from Suicide Basin above Alaska’s capital city, a news release from the City and Borough of Juneau said.
Video posted on social media showed towering trees behind a home falling into the rushing river as the water ate away at the bank. Eventually, the home, teetering at the edge, also collapsed into the river.
River levels were falling Sunday but the city said the banks of the river remain highly unstable. Some roadways have been blocked by silt and debris from the flooding, it said.
Such glacial outburst floods happen when glaciers melt and pour massive amounts of water into nearby lakes. A study released earlier this year found such floods pose a risk to 15 million people around the globe, more than half of them in India, Pakistan, Peru and China.
Suicide Basin has released water that has caused flooding along the Mendenhall Lake and Mendenhall River since 2011, according to the National Weather Service. However, the maximum water level in the lake on Saturday night exceeded the previous record flood stage set in July 2016, the weather service said.
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