Lakes. . . . . . .
lacus) is a terrain feature, a body of water that is localized to the bottom of basin. A body of water is considered a lake when it is inland, is not part of aocean, is larger and deeper than a pond, and is fed by a river.
Natural lakes on Earth are generally found inmountainous areas, rift zones, and areas with ongoing or recent glaciation. Other lakes are found inendorheic basins or along the courses of mature rivers. In some parts of the world, there are many lakes because of chaotic drainage patterns left over from the last Ice Age. All lakes are temporary over geologic time scales, as they will slowly fill in with sediments or spill out of the basin containing them.