Linked from
The 38 pages that link to Glacial lake, each with the reason it gives.
GlaciologyBroader topic: Glacial lakes can reshape valleys and create flood hazards as ice retreats.
GlaciationBroader topic: Retreating ice can create lakes that reshape drainage and floodplains.
LakeBroader topic: Glaciers excavate basins and leave deposits that can impound water.
Glacial valleyBroader topic: Valley overdeepening and moraine dams commonly create these lakes.