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

• Unconfined aquifer is subjected to fluctuations according to the seasons of the year and local irrigation practices.

• Substantial credible information" means probable, believable facts sufficient to support a reasonable legal theory upon which the department should proceed with the action requested by the person providing the information.(24) "Unconfined aquifer" means an aquifer that is not a confined aquifer and that exhibits hydrostatic pressure at the water table equal to atmospheric pressure and where the water table is exposed to the atmosphere through openings in the overlying materials.

• Unconfined aquifer systems are also present in the Roca Honda/San Mateo area, both in the alluvium of San Mateo Creek stream bed and in the Menefee Formation.

• This benefit reduction will remain in effect indefinitely and is expected to delay the plan’s projected insolvency by 26 years and in conjunction with the other proposed suspensions, is expected to delay the Plan’s projected insolvency indefinitely.

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