The Water Table.
The term Piezometric, or sometimes Potentiometric, Surface occurs in literature on hydrology but describes an artificial level in a well or borehole, used for measuring the aquifer.
the zone of aeration
The upper surface of the zone of saturation where all the pores are filled with water is called the water table. This is the boundary between the saturated zone below and the unsaturated zone above, where the soil or rock is not fully filled with water.
When the ground can no longer hold water, it is called saturation. This occurs when the soil is unable to absorb any more water due to saturation and excess water pools on the surface or runs off.
The spaces between rocks and soil are called pore spaces or interstitial spaces. These spaces are important for water infiltration, aeration, and root penetration in the soil.
The hole bored into the zone of saturation is called a well. Wells are drilled to access groundwater stored in the saturated zone below the surface, providing a source of water for various purposes such as drinking, irrigation, and industrial use.
It is called the water table or phreatic surface.
the zone of aeration
The area between the zone of saturation and the zone of aeration is called the capillary fringe. In this zone, water is held in the soil pores by capillary action, and it serves as a transition area where both air and water coexist. Above the capillary fringe lies the zone of aeration, which contains mostly air and some moisture.
Impermeable Rock
aeration zone
The zone of aeration is where there is both air and water within the pore spaces in the ground. In the zone of saturation the pore spaces are totally filled with water. The boundary between these two zones is known as the water table or phreatic surface.
The upper surface of the zone of saturation where all the pores are filled with water is called the water table. This is the boundary between the saturated zone below and the unsaturated zone above, where the soil or rock is not fully filled with water.
The aeration and saturation zones meet at the water table, which is the boundary between the unsaturated zone (aeration zone) and the saturated zone. Below the water table, all pore spaces in the soil are filled with water, while above the water table there are air and water-filled pore spaces.
This is known as the phreatic surface or water table.
The aquifer zone that lies between the water table and Earth's surface is called the unsaturated zone or vadose zone. This zone contains soil and rock layers where pores are not completely filled with water, allowing for the movement of both water and air.
The area immediately below the water table is called the zone of saturation. This zone is where spaces between soil and rock particles are filled with water. Groundwater is found in this zone and can be extracted through wells.
When the ground can no longer hold water, it is called saturation. This occurs when the soil is unable to absorb any more water due to saturation and excess water pools on the surface or runs off.