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The water table is the upper surface of the zone of saturation where the ground is saturated with groundwater. A perched water table is an aquifer above the main water table, caused by an impermeable layer below. Learn how the water table varies due to seasonal, tidal, and long-term factors, and how it affects crops and construction.
3 days ago · Learn about the water table, the saturated and unsaturated zones, and the perched water table. A perched water table is a lens of groundwater above the main water table, often caused by an impermeable layer.
Perched aquifers are unconfined aquifers that form above a lower permeability layer in the vadose zone. They are maintained by recharge that accumulates on the aquitard and have an inverted water table above them.
- William Woessner, Eileen Poeter
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What is a perched water table?
Learn about the definition, formation, and effects of perched water tables in soils and geology. Find chapters and articles from various books and journals on this topic.
The perched water table is a layer of saturation on the container bottom. Container height affects the relative amount of water versus air. With the same media, the perched water table occurs at the same height, regardless of the container size.
May 30, 2022 · We review departures from the classical definition of the water table and consider the following phenomena: perched and inverted water tables, gas bubbles within the “saturated” zone below the water table, and water tables in dual (and multiple) porosity media.
Learn about steady-state regional groundwater flow, recharge, discharge, and groundwater divides in a two-dimensional cross section. See how topography and geology affect the flow patterns and the position of the water table.
