Lakes are bodies of water completely surrounded by land. They contain fresh water, allowing irrigation of adjacent squares without Electricity. Fresh water is a lake that has 20 or less tiles of water. If it has more tiles, it is considered a sea with salt water by the game.
The shores of fresh water lakes have always been greatly valued sites on which to build because of the abundance of fresh water for drinking and irrigation. Lakes are also rich sources of food and commercial products, and harvesting such resources is a boon to any nearby settlement.
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