PROGRAMS FOR USE WITH THE ARTICLE "COMPUTER DETERMINATION
OF AQUIFER PARAMETERS BY SLOPE MATCHING" BY ROBERT PITTENGER
AND JAMES S. REICHARD


CONTENTS:

1.  DISTRIBUTION
2.  PROGRAMS
3.  DATA FILES
4.  AUTHOR INFORMATION

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1.  DISTRIBUTION

     Following the publication of the above article, all or
any files on this disk may be distributed freely.  Prior
to publication of the above article, all programs on this
disk are considered confidential and may be viewed or
used only for purposes of reviewing the above article.  Files
may not be copied and may be distributed only to reviewers
authorized by Ground Water Publishing Company.

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2  PROGRAMS

This disk contains the following DOS programs.

ALPHA.EXE -- This program is used to verify that the slope-
matching program correctly calculates u from a given slope.

BESSEL.EXE -- This program is used to verify that the slope-
matching program correctly calculates the argument to the
Bessel function Ko.

SLOPE.EXE -- This is the slope-matching program.  It performs
the following tasks:

a.  Accepts pumping test data and writes the data to a file.
b.  Reads data from a file created with the program.
c.  Using the slope-matching method, estimates aquifer 
    transmissivity, storativity, and leakage factor, and 
    creates data tables documenting the calculations
d.  Creates a table of slope values for values of u.
e.  Creates a table of values of W(u) for values of u.

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3.  DATA FILES

    This disk includes two data files for the slope matching
program.  Data files are given a PTD extension for
Pump Test Data.  DALEM90.PTD is the data from the leaky
aquifer "Dalem" from the observation well at 90 meters.
The data is from:

Kruseman, G. P., and N.A. de Ridder. 1991. Analysis and 
evaluation of pumping test data, second Edition, 
International Institute for Land Reclamation and 
Improvement, Wageningen, The Netherlands.

SCHULTZ.PTD is the data set for a non-leaky aquifer.  The
data set is from:

Schultz, E.F. 1973.  Problems in Applied Hydrology.  
Water Resources Publications, Colorado State University, 
510 pp.

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4.  AUTHOR INFORMATION

Robert Pittenger is with Starpoint Software, Cincinnati, OH
USA.  E-mail info@pointstar.com

James S. Reichard is with Georgia Southern University, Dept.
of Geology/Geography, Statesboro, GA, USA 40460-8149