release.txt

                           MODPATH_OBS Release Notes

This file describes changes introduced into MODPATH_OBS with each
official release; these changes may substantially affect users.  
For information and references related to changes in MODPATH_OBS 
(Version 1.00.00), please refer to the MODPATH_OBS release notes or the 
publicationons for these packages.

NOTE: Any use of trade, product or firm names is for descriptive purposes 
      only and does not imply endorsement by the U.S. Government.

o MODAPTH_OBS Version 1.0.00 This version is the initial release (mpath_obs).

NOTES to Users:


(1) MODPATH_OBS PROCESS (mpath_obs):

  (A) FORTRAN: Double Precision, Explicit Variable Data Types, and Fortran90 --

Consistent with MF2005, mpath_obs maintains the mixed precision of single and double precision Real numbers. 
Modern Fortran compilers have an option to convert all Real(Kind=4) to Double Precision(Kind=8) without the need 
to modify the code (see README.TXT / E. COMPILING). mpath_obs was made fully compatible with Fortran 90. 
For instance, "do loops" referring to the same "CONTINUE," arithmetic IF conditions, and "PAUSE" statements were not used. 
Do not reset the single precision real variables to double precision within compilation options or Jupiter-API routines 
will not function correctly and compilation of source code for mpath_obs will fail.


  (B) Parallel Processing -- Some example files are set up for running in parallel processing mode for parameter estimation
with programs such as UCODE and PEST. The user will need to reconfigure these examples and related batch files to suite your individual
platform for parallel processing and related software. These are intended to be examples of how this can be structured and may not 
run as is on your platform. It is the responsibility of the user to inspect these files and make the necessary changes.

(2) Ancillary Programs for preprocessing:

  (A) AddVolume (Appendix D): This is a utility program that helps the user assign volumes of water to particles that are used with MODPATH
for forward or backward tracking where the volume representation of the particles may vary between different sources. This program is written 
in C#, requires the installation of .NET Framework software, and will only work in the Mirosoft OS environment.

  (B) ModpathParameters (Appendix E): This is an addtional program that is distributed with mpath_obs to help the user assign porosity parameters
using zone and multiplier arrays from MODFLOW input. This program is written in C#, requires the installation of .NET Framework software,
and will only work in the Mirosoft OS environment.