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The water table is the upper surface of the zone of saturation, where the pores and fractures of the ground are filled with groundwater. A perched water table is an aquifer above the main water table, separated by an impermeable layer.
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3 days ago · Perched water tables. A perched water table (Figure 1) is an accumulation of groundwater that is above the water table in the unsaturated zone. The groundwater is usually trapped above an impermeable soil layer, such as clay, and actually forms a lens of saturated material in the unsaturated zone.
Oct 6, 2012 · Learn the definitions and examples of water table and perched water table in unconfined aquifers. Water table is a free water surface in an aquifer, while perched water table is a localised patch of water above the general water table.
A water table forms the lower boundary of the perched system (inverted triangles). The left well shows the presence of unconfined saturated perched conditions (perched groundwater flows into the well).
- William Woessner, Eileen Poeter
A perched water table is a localised water level over a layer of impermeable material in a permeable rock. Learn how to identify perched water tables and compare them with other groundwater terms such as rest water level, potentiometric surface and artesian.
A perched water table is a layer of saturated soil that forms above the main groundwater table due to low permeability or a lithological discontinuity. Learn how perched water tables affect soil moisture, pedogenesis, and hydropedology in different soils and environments.
Seasonal High Water Table Ground water or a perched water table causing saturated conditions near the surface degrades water resources or restricts capability of land to support its intended use.
