Perched water table definition

Perched water table means a saturated soil horizon or horizon subdivision, with a free water surface periodically observed in a bore hole or shallow monitoring well, but generally above the normal water table, or may be as identified by drainage mottles or redoximorphic features, and caused by a less permeable lower horizon.

Perched water table means a saturated zone, generally above the natural water table, as identified by drainage mottles caused by a restrictive horizon.

Perched water table means a zone of saturation held above the main groundwater body by a

Examples of Perched water table in a sentence

• Perched water table: the upper limit of a zone of saturation that is perched on an unsaturated zone by an impermeable layer, hence separating it from the main body of ground water (the saturated zone).

• Perched water table is an accumulation of groundwater located above and separated from an underlying water table.

• Perched water table conditions have been encountered at a depth of about 12 mbgs at some areas on the upper plateau.

• Perched water table, discharges to aquiferTypes 1, 2 and 7 occur on glacial till and account for 1,188 acres or 26.5% of the total.

• Areas consisting of shallow soils over rock or lower permeable sands (e.g.; coffee rock) detailed investigations are to be carried out to determine the existence of stored water near the lower level layers (i.e. Perched water table) and the location of the emergence point of stored water.

More Definitions of Perched water table

Perched water table means a saturated soil horizon or horizon subdivision, with free water surface

Perched water table means a zone of saturation held above the main groundwater body by a less permeable layer, impermeable rock, or sediment, which may or may not exhibit redoximorphic features.

Perched water table means a saturated zone as identified by free water, soft concretions, or soil color of chroma 2 or less overlying an impermeable horizon and generally above the permanent water table.

Perched water table means the term as defined in 15A NCAC 18A .1935.

Perched water table means a saturated soil horizon or horizon subdivision, with a free water surface periodically observed in a bore hole or shallow monitoring well, but generally above the normal water

Perched water table means the soil is saturated with water in one or more layers within 200 centimeters of the mineral soil surface and has one or more unsaturated layers with an upper boundary above 200 centimeters in depth below the saturated layer. The zone of saturation , i.e. the water table is perched on top of a relatively impermeable layer. The Natural Resources Conservation Service also classifies this as epi-saturation.

Perched water table means water, surface and/or subsurface, which accumulates on or in the upper strata of soil or subsoil due to an impervious layer beneath.