Water table

water table
(Science: ecology) The zone of saturation at the highest average depth during the wettest season, it is at least six inches thick and persists in the soil for more than a few weeks.
Underground surface below which the ground is wholly saturated with water; spring rains had raised the water table.The level of water that is equally spread across the landscape which may be under of above ground. The water table exists under dry land, though when the altitude of the land decreases, the water table is close to the surface. If the level of the water table exceeds the altitude of the ground, then a lake will form.