Water Under The Ground

4/9/01


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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

Author: John C Butler

Email: jbutler@uh.edu