Unconfined aquifer definition

Unconfined aquifer means an aquifer in which a relatively impermeable layer does not exist between the water table and the ground surface and in which the water surface is at atmospheric pressure.
Unconfined aquifer means an aquifer not bounded above by a bed of distinctly lower permeability than that of the aquifer itself and containing ground water under pressure approximately equal to that of the atmosphere. This term is synonymous with the termwater table aquifer.”
Unconfined aquifer means an aquifer whose upper surface is a water table free to fluctuate under atmospheric pressure.

Examples of Unconfined aquifer in a sentence

  • Unconfined aquiferUnconfined aquifer shall mean groundwater that is under the pressure exerted by the overlying groundwater and atmospheric pressure.

  • Unconfined aquifer subsurface outflows from GSAs were estimated using the same procedure previously described for use in estimating unconfined subsurface inflows.

  • Unconfined aquiferUnconfined aquifer shall mean groundwater that is under the pressure exerted by the overlying groundwater and by atmospheric pressure.

  • Unconfined aquifer conditions and partially penetrating wells were considered in analysis of the aquifer test data2.

  • Unconfined aquifer systems in the region are predominantly recharged by infiltration of local rainfall.


More Definitions of Unconfined aquifer

Unconfined aquifer means an aquifer in which no relatively impermeable layer exists between the water table and the ground surface and an aquifer in which the water is at atmospheric pressure.
Unconfined aquifer means an aquifer in which the static water level does not rise above the top of the aquifer, i.e., the pressure of the water in the aquifer is approximately equal to that of the atmosphere.
Unconfined aquifer means the saturated geological formation where groundwater has a free water table occurring above the aquitard on top of the Dilwyn Formation or the Mepunga Formation in the Otway Basin, or the Renmark Group in the Murray Basin, whether occurring within the Gambier Limestone of the Otway Basin, the Murray Group Limestone of the Murray Basin, or some other younger geological unit.
Unconfined aquifer means an aquifer that is either exposed to atmospheric pressure or bounded by layers of materials which do not serve as an effective barrier to water migration.
Unconfined aquifer means an aquifer where no relatively impermeable layer exists between the water table and the ground surface and the water surface is at atmospheric pressure.
Unconfined aquifer means an aquifer in which the hydrostatic head at the upper surface of the ground water is atmospheric.
Unconfined aquifer means an aquifer in which the static water level does not rise above the top of the aquifer, i.e., the pressure of the water in the aquifer is approximately equal to that of the atmosphere. “Water well” means an excavation that is drilled, cored, bored, augered, washed, driven, dug, jetted