PEST

This model is distributed by EPA as a legacy model, but no user support is available from EPA.

PEST is a model-independent parameter estimation package which can communicate with any model through the model's own input and output files. PEST can be used for nonlinear parameter estimation and predictive analysis in many different fields of study including ground and surface water hydrology, geophysics, engineering and others.

Specifications
Current Version:	6.05
Release Date:	April 2003
Development Status:	General Release
Development Information:	Release Notes - changes and known deficiencies
Operating System:	DOS
Development Language:	FORTRAN
Intended Audience:	Hydrologist, Geophysicist, Engineer
Key Words:	model, independent, parameter, estimation
Related Web Sites:	None Available

Text Files (ASCII Format)
File Name	File Description
ABSTRACT.TXT	Summary of functions, theory, and applicability.
README.TXT	Important installation and usage information.

Download Files
File Type / Priority	File Name / Format / Size	File Description
Install / Required	INSTALPE.EXE / Self-extracting Zip / 3.0 MB	Setup file for version 6.05 of the PEST system. See README.TXT for important installation information.
Document / Recommended	PESTMAN.PDF	PEST Model-Independent Parameter Estimation. User's guide for the PEST software.
Install / Optional	SWUTILS.EXE / Self-extracting Zip / 1.6 MB	The PEST Surface Water Utilities are a suite of programs designed to assist in the use of PEST with surface water models. See README.TXT for important installation information.
Document / Optional	SWUTILS.PDF	PEST Surface Water Utilities. User's guide for the optional PEST surface water utilities.
Document / Optional	Alterations to HSPF Data Input (PDF) (95.54 KB)	Describes the changes made to HSPF to enhance its use with PEST.
Install / Optional	HSPF_ALT.EXE / Self-extracting Zip / 0.9 MB	The modified version of Hydrological Simulation Program - FORTRAN (HSPF) reads numbers contained in input files with greater precision, enhancing its use with PEST. See README.TXT for important installation information.
Install / Optional	WORKSHOP.EXE / Self-extracting Zip / 1.7 MB	The PEST workshop download contains files required to complete the exercises outlined in WORKSHOP.PDF. See README.TXT for important installation information.
Document / Optional	WORKSHOP.PDF	Calibrating a HSPF Model Using TSPROC and PEST. Provides lessons which can be applied to the calibration and predictive analysis of environmental models. Files contained in WORKSHOP.EXE are required to complete the exercises.

PEST

Hydrologic Modeling Community of Practice