aquifer

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Related to Unconfined aquifer: Perched aquifer

aquifer

a reservoir of ground water found in underground rock, sand and gravel layers.
References in periodicals archive ?
146) The Department presumes that "[a]ll wells located a horizontal distance less than one-fourth mile from a surface water source that produce water from an unconfined aquifer shall be assumed to be hydraulically connected to the surface water source, unless the applicant or appropriator provides satisfactory information or demonstration to the contrary" and conducts additional analysis for wells farther from an unconfined aquifer.
In contrast, in low yielding aquifers, such as overburdens or unconfined aquifers, dug/bored wells often are more advantageous than drilled wells.
The lateral zonation of unconfined aquifer on the basis of hydraulic conductivity is done by the help of an algorithm method in Figure 5 (e.
Groundwater samples from the unconfined aquifer (during autumn season with 19[degrees]C of average temperature) were collected from rural wells, including windmills and domestic wells with electric pumps.
2] ions are abundantly present in the reduced waters of the unconfined aquifer.
The drawdown near and abstraction well of large diameter under non-steady conditions in an unconfined aquifer, Journal of Hydrology, 30, 29-46.
A groundwater level of an unconfined aquifer or the piezometric surface of a confined aquifer indicates the elevations of the atmospheric pressure on the aquifer and hydraulic gradient of the area.
The flood gravels that filled the glacial trench in northern Idaho and the Spokane valley have been partially filled with water creating an unconfined aquifer.
Figure 11-4 shows an unconfined aquifer overlying a confined aquifer.
The tracer experiments were conducted in the upper unconfined aquifer, which consists of quaternary sediments overlaid by loess.