It can affect electricity and cause a shortage. along with that, if a glacier flows across a stream/river , it’ll create a dam that stores a lot of water. therefore, it could end up flooding an area
Flooding caused by a glacier More dangerous is the case when a glacier flows across a stream or river, creating a dam that can trap a large amount of water. ... In Peru in 1941, 6,000 people perished when a glacial lake suddenly burst through its dam, flooding the town of Huaraz below it.