Table of Contents
Water Under The Ground
Distribution of Water
Distribution of Fresh Water
Hydrologic Cycle
Rainfall
Rainfall in the U.S.A.
Terminology
Porosity
The Water Table
Aeration and Saturation
GWT Follows the Topography
Aquifer
Perched Water Table
GWT Changes Seasonally
Springs
Effect of Excessive Pumping
Artesian Wells
Water Towers
Salt Water Incursion
Natural Filtering
Sensitivity to Changes
The Ogallala Reservoir
The San Joaquin Valley
Subsidence in the San Joaquin
Geothermal
Thermal Springs
Caves (I)
Caves (II)
Cave ìFormationsî (I)
Cave ìFormationsî (II)
Karst Topography
Sinkhole
A Geologic Hazard
Sinkholes In Florida
Uses of Groundwater
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Author: John C Butler
Email: jbutler@uh.edu
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