how do lakes form?
Rating Newest Oldest. Best Answer: You need just two things to form a lake: A source of water, and a basin, or depression, where it can collect. More of the worldâs lakes were formed by glaciers than by any other method. During the Ice Age, much of the Northern Hemisphere was covered with great glaciers that cut or enlarged depressions in the earth which later filled with water. These are called glacial lakes.