Hydrologic Evaluation of Landfill Performance

The HELP model (Hydrologic Evaluation of Landfill Performance) is a hydrologic numerical model initially developed by the United States Environmental Protection Agency for landfills.^[1] The model uses a water-balance approach to model evapotranspiration and drainage through soil layers.

Versions

• Public domain (free) version:
  • HELP 3.07 – DOS executable, as well as most of the Fortran source code and user manuals^[1]
• Commercial versions:
  • WHI UnSat Suite – based on the HELP version 3.07 codebase, offers a Microsoft Windows GUI to view and edit soil profiles.
  • HELP 3.80D – Enhanced and "corrected" version by Dr. Klaus Berger at the University of Hamburg; based on HELP 3.07. Uses same DOS interface as the original.

References

1. ^ ^{a b} Schroeder, P.R. and Dozier, T.S. and Zappi, P.A. and McEnroe, B.M. and Sjostrom, J.W. and Peyton, R.L. (1994). The Hydrologic Evaluation of Landfill Performance (HELP) model: Engineering documentation for version 3. Washington, DC: U.S. Environmental Protection Agency Office of Research and Development.