![]() The water table is the area at which the pores are fully saturated with water. Water is found throughout porosity in sediments and bedrock. Wells are generally the way that geologists and hydrologists measure the depth to groundwater from the land surface as well as withdraw water from aquifers. W ells are conduits that extend into the ground with openings to the aquifers, to extract from, measure, and sometimes add water to the aquifer. The interface between the capillary fringe and the saturated zone marks the location of the water table. phreatic zone), where the pores are completely saturated and the fluid in the pores is at or above atmospheric pressure. Below the capillary fringe is the saturated zone (a.k.a. The pores in the capillary fringe are filled because of capillary action, described in the Properties of Water section above. The capillary fringe is the usually thin zone below the vadose zone where the pores are completely filled with water (saturation), but the fluid pressure is less than atmospheric pressure. Below the vadose zone is the capillary fringe. In the vadose zone, fluid pressure in the pores is less than atmospheric pressure. Plants’ roots inhabit the upper vadose zone. The vadose zone is the volume of material between the land surface and the zone of saturation, which consists of geologic materials in which the pore spaces are not completely filled with water. When surface water infiltrates or seeps into the ground, it usually enters the unsaturated zone (a.k.a.
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