aquifer(redirected from Aquatard)
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aquifer(ăk`wĭfər): see artesian wellartesian well,
deep drilled well through which water is forced upward under pressure. The water in an artesian well flows from an aquifer, which is a layer of very porous rock or sediment, usually sandstone, capable of holding and transmitting large quantities of water.
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process or activity by which water is provided for some use, e.g., to a home, factory, or business. The term may also refer to the supply of water provided in this way.
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Any underground water-bearing rock formation or group of formations that supplies groundwater, wells, or springs.
a stratum or several strata of water-permeable rock, whose pores, cracks, or other cavities are filled with groundwater. Several aquifers hydraulically connected to each other form an aquifer complex.
A permeable body of rock capable of yielding quantities of groundwater to wells and springs.
A subsurface zone that yields economically important amounts of water to wells.
A water-bearing formation of gravel, permeable rock, or sand that is capable of providing water, in usable quantities, to springs or wells.
a porous deposit of rock, such as a sandstone, containing water that can be used to supply wells