By Becky Bohrer and Mark Thiessen
Associated Press 

Bursting ice dam in Juneau highlights risks of destructive glacial flooding around the globe

 

August 10, 2023

Mark Sabbatini / Juneau Empire

Debris from a home that partially fell into the Mendenhall River sits on its banks in Juneau, Alaska, on Sunday Aug. 6, 2023.

JUNEAU - The gray, two-story home with white trim toppled and slid, crashing into the river below as rushing waters carried off a bobbing chunk of its roof. Next door, a condo building teetered on the edge of the bank, its foundation already having fallen away as erosion undercut it.

The destruction came over the weekend as a glacial dam burst in Alaska's capital, swelling the levels of the Mendenhall River to an unprecedented degree. The bursting of such snow-and-ice dams is a phenomenon called a jökuhlaup, and while it's relatively little-known in the U.S., researchers say such glacial f...



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