In Chefornak, a family was forced to evacuate their home because a sinkhole caused by thawing permafrost formed underneath it. That family had to move into a building intended to be a quarantine facility.
Kwigillingok, a community on the Bering Sea coast of the Yukon-Kuskokwim Delta, is used to some flooding during high tides. But in recent years, that flooding has grown more severe, reaching a new threshold last week.
The spill followed a sudden rise in warm temperatures in recent days. Hooper Bay Mayor Sandra Hill said that the thaw and rain had melted the previously frozen land surrounding the sewage lagoon, causing a wall of the lagoon to cave.
Akiak City Administrator David Gilila says the village is in danger of becoming an island in the Kuskokwim River.
A critical artery is threatened by thawing permafrost.
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