Sentence examples for extensive aquifers from inspiring English sources

Domestic well data include 2,401 samples collected during 1985–2002 and represent > 33 of the nation's 62 regionally extensive aquifers or aquifer systems (Zogorski et al. 2006).

In a recent study of public-supply-well water quality in the United States, nearly two-thirds of all samples from 932 public wells tapping 30 regionally extensive aquifers contained detectable amounts of drinking-water contaminants that originated entirely or primarily from manmade sources.

Hence, large areas in urban and industrial use on the top of the most extensive aquifer explain the results from the energy potential calculations.

For example, groundwater age can serve as a measure of intrinsic susceptibility, but it might not be feasible to estimate groundwater age for the large number of wells that would be necessary for assessing public-supply-well vulnerability across a regionally extensive aquifer.

Riparian zones linked to thicker and more extensive upland aquifers had large relatively constant groundwater inputs that maintained a stable riparian water table.

Little is known about the impact of manure management practices on water quality of the extensive alluvial aquifers underlying these basins.

The major feature of the lower hydrogeological group is the occurrence of a thin shallow but extensive unconfined aquifer.

He noted that when a well penetrating an extensive confined aquifer is pumped at a constant rate, the influence of the discharge extends outward with time.

It's reasonable to think that much of the water comes from aquifers, extensive underground reservoirs that huddle just below Mars's dry surface.

In the northern part of the Upper Jurassic aquifer, extensive investigations were carried out to measure isotope content and to get hydrochemical data.

According to Hsieh et al. (1987), for a homogeneous, isotropic, laterally extensive, and confined aquifer, the phase shifts between Earth tides and water level are assumed to be caused by the time required for the water to flow into and out of the well.