الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Groundwater occurrence and movement depends on topography, lithology, degree of weathering and on structural elements. The groundwater level is closer to the ground surface at lower elevations. The competent rocks have higher fracture permeability and form better aquifers because fractures stay open at relatively higher stresses. The degree of frac¬turing and shearing also determines the quality of the aquifer. Although the highly fractured rocks make better aquifers than the massive rocks, intensive weathering in highly fractured sheared rocks may decrease its fracture permeability. The Quaternary sediments in the area are relatively important aquifers. Most of the wells at Mount Zion and Cody Park produce from Quaternary alluvium. The Mount Vernon shear zone transmissibility and storativity were evaluated from pump-test data. Other pump tests showed reversed waterlevel behavior of the aquifer by , the modification of the stresses around the pumping well. The porosity of the shear zone material, measured in the labora- tory, is much less than the porosity values of intergranular porous media and higher than published values of similar fractured rocks.
Fluctuations of groundwater level, as observed in Mount Vernon Club wells, are due to changes in storage and atmos- pheric pressure.
The water chemical quality maps show trends almost parallel to the topography, except for structural and