Naturaly generated in any new world.
The lake can be as 1x1 tile in world map or by any size generated.
Mostly lakes are use for fishing fish :
- Perch
- Roach
- Bream
- Burbot
- Pike
But you cannot fish for trout,salmon,pike-perch,lavaret.
Lake also can be used to train you swimming skill ,as mostly lakes are shallow.
Like river,lake can be frozen over and walked,in winter seasons.