PEST - Model-Independent Parameter Estimation and Uncertainty Analysis

About Us

These pages were built, and are being maintained, as a service to our industry by the following people (in alphabetical order):

  • John Doherty (Watermark Numerical Computing)
  • Chris Muffels (S. S. Papadopulos and Associates)
  • Jim Rumbaugh (Environmental Simulations Inc.)
  • Matt Tonkin (S. S. Papadopulos and Associates)

Contact us to find out more.

Corporate assistance in building and maintaining these pages has been provided by (in alphabetical order):

  • Environmental Simulations Inc, USA 
  • National Centre for Groundwater Research and Training, Australia
  • S. S. Papadopulos and Associates, USA 
  • Watermark Numerical Computing

There is a wider group of "friends of PEST" who have assisted in its development over the years in many ways - either as individuals, or in accordance with collaborative and consulting arrangements with Watermark Numerical Computing through the institutions for which they worked at the time. The name of the pertinent institution is supplied in parenthesis following the name of each individual below. Names are supplied in alphabetical order.

  • Tom Clemo (CGISS, Boise State University)
  • Steen Christensen (Aarhus University)
  • Donna Cosgrove (University of Idaho)
  • Dave Dahlstrom (Barr Engineering Company)
  • Alyssa Dausman (USGS)
  • Mike Fienen (USGS)
  • Mark Gallagher (University of Queensland)
  • Randy Hunt (USGS)
  • Scott James (Sandia National Laboratory)
  • Gary Johnson (University of Idaho)
  • Elizabeth Keating (Los Alamos National Laboratory)
  • Chris Langevin (USGS)
  • Catherine Moore (University of Queensland)
  • Chris Muffels (SSPA)
  • Mike Shook (Idaho National Engineering Laboratory)
  • Matt Tonkin (SSPA)
  • Willem Schreuder (Principia Mathematica)
  • Dave Welter (South Florida Water Management District)
  • Allan Wylie (University of Idaho)
  • Steve Young (URS)
  • George Zyvoloski (Los Alamos National Laboratory)

Funding for the development of parts of PEST, or for supporting utility software, has been received, at one time or another, from all of the following institutions; names are supplied in alphabetical order.

  • CGISS, Boise State University
  • CH2M Hill
  • Los Alamos National Laboratory
  • EMS-I
  • Environmental Simulations Inc.
  • Idaho National Engineering Laboratory
  • Matrix Solutions Inc
  • National Centre for Groundwater Research and Training, Australia
  • Northern Territory Department of Natural Resources, Environment and the Arts
  • Queensland Department of Natural Resources and Water
  • South Florida Water Management District
  • University of Idaho
  • U.S. Geological Survey
  • U.S. Environmental Protection Agency
  • Victoria Department of Natural Resources and Environment
  • Waterloo Hydrogeologic
  • California Department of Water Resources 

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