phreatic water

phreatic water

[frē′ad·ik ′wȯd·ər]
(hydrology)
Groundwater in the zone of saturation.
References in periodicals archive ?
It is assumed that the phreatic water table level is constant during all periods so that the vertical downward seepage from the phreatic aquifer recharges each layer directly or indirectly when the hydraulic head in the pumped layer drops.
He strives to be readable and yet avoid the vice of oversimplification; thus along with, for instance, chapters about the hydrologic cycle, aquifers, and contemporary groundwater supply issues, there are also chapters on vadose water and phreatic water and applied hydrogeology.
But most of the dried water penetrated into the soil and into the phreatic water, causing the pollution of the soil, of the phreatic waters, of the springs, and so on.
Under the mentioned climatic conditions, the drainage on the territory is ensured by the two main valleys: Calmatui and Urlui, thus the phreatic water is found at depths of more than 15-20 meters and only at meadows and terraces at a lower depth (1-5 meters).
Juan Guillén, a member of the Coordinadora de Islay contra la Agresión de la Minería, said that the project was going to use and pollute agriculture water, affecting the ecosystem in the entire area, including the phreatic water table.
The notations are as it follows: p--the width of phreatic water, [H.sub.0]--the width of the saturated soil zone at the drain, [H.sub.m]--the width of the saturated soil zone midway between the drains, [D.sub.0]--the distance between drains and the impermeable layer, [L.sub.dr] = L--the drain distance, H--the depth of the impermeable layer and K--the hydraulic conductivity of the soil.
In both soils phreatic water is shallow, exhibiting some differences in its characteristics.
This interpretation is supported by the nonsignificance (0.155) of the correlation coefficient between the depth of the upper limit of phreatic water and the arsenic content (Figure 3).
where [h.sub.phreatic] is the waterhead within the influence radius of dewatering in phreatic water layer; [h.sub.w] is the water level in the well; [H.sub.0] is the aquifer thickness; r is the distance between the measuring point and the center of the dewatering well; R is the influence radius of the dewatering.
Groundwater aquifers, mainly phreatic water are the only current and potential source of easily accessible water for the rural population.
The capillary rise height can be defined as the distance from an obvious wet surface under the surface to the phreatic water level (Figure 4).