USGS

Basic ground-water hydrology

U.S. Geological Survey, Water Supply Paper 2220

by Ralph C. Heath


Table of Contents

Ground-water hydrology

Rocks and water

Underground water

Hydrologic cycle

Aquifers and confining beds

Porosity

Specific yield and specific retention

Heads and gradients

Hydraulic conductivity

Functions of ground-water systems

Capillarity and unsaturated flow

Stratification and unsaturated flow

Saturated flow and dispersion

Ground-water movement and topography

Ground-water flow nets

Ground-water movement and stratification

Ground-water velocity

Transmissivity

Storage coefficient

Cone of depression

Source of water derived from wells

Aquifer tests

Analysis of aquifer-test data

Time-drawdown analysis

Distance-drawdown analysis

Single-well tests

Well interference

Aquifer boundaries

Tests affected by lateral boundaries

Tests affected by leaky confining beds

Well-construction methods

Well logs

Water-well design

Well-acceptance tests and well efficiency

Specific capacity and transmissivity

Well-field design

Quality of ground water

Pollution of ground water

Saltwater encroachment

Temperature of ground water

Measurements of water levels and pumping rates

Protection of supply wells

Supply-well problems-Decline in yield

Supply-well problems-Changes in water quality

Well records and files

References

Numbers, equations, and conversions

 


 

Back

 



U.S. Department of the Interior, U.S. Geological Survey
Persistent URL:
Page Contact Information: Publishing Service Center
Last modified: Thursday, September 01 2005, 02:26:53 PM
FirstGov button  Take Pride in America button