Flooding In Alaska 2025. City officials in juneau, alaska, have issued an emergency declaration as a glacier lake outburst flood wreaks havoc near the city, where structures have been destroyed. In the early hours of august 6, a lake dammed by juneau's mendenhall glacier burst through the ice, flooding hundreds of homes and businesses in the mendenhall valley.

Multiple homes and roads were inundated. A rush of water unleashed by an ailing glacier swelled an alaska river to record levels tuesday and caused destructive flooding in juneau nearly a year to the date of a similar significant.