A person is digging a hole, when the hole suddenly starts to fill with water. They have found the water table
The water table serves as a physical barrier between the soil's surface and the region where groundwater seeps into rock crevices and voids between sediments. At this boundary, the pressure of the water and the atmosphere are equal.
In the water table the soil's uppermost layer, which is referred to as the unsaturated zone, is where water and oxygen coexist in the crevices between sediments. Due to the presence of oxygen in the soil, the unsaturated zone is sometimes referred to as the zone of aeration. The saturated zone, when water completely fills the crevices between the sediments, is located beneath the water table.
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