Colorado State University

WASP AT - Analysis Tools for WASP

WASP AT tools have been designed to simplify water quality modeling using Water Quality Analysis and Simulation Program (WASP). The following tools and documents are available:


Tool Description
WASP Builder
  • Builds input files for EPA's WASP 5.0 model.
  • Simplifies the creation of WASP input files.
Graphical Data Processor (GDP)
  • Saves time and labor in preparing data for analysis.
  • Produces graphs of data values or data availability.
EPA's WASP 5.0 Please note that newer versions of WASP, beyond 5.0, are not currently supported by WASP AT Tools. For more information about how to use WASP, please visit


Brochures Notes
waspat_broch.pdf WASP AT brochure.
builder_broch.pdf WASP Builder brochure.
gdp_broch.pdf GDP brochure.
User manuals Notes
builder_man_v12.pdf WASP Builder user manual.
Final report Notes
Sections I & II Appendix A contains task memos written for this project. Appendix F and G contain descriptions of the programming routines created for this project. Appendix H describes the data needed for WASP parameter cards.
Task Memos
WASP Builder Routine Description
GDP Routine Description
WASP Input Card Description

Warranty and Disclaimer

This program is distributed with the hope that it will be useful. However, the Integrated Decision Support Group makes no warranties, expressed or implied, including, but not limited to performance, functionality, accuracy, merchantability, or fitness for any particular purpose. In no event shall the Integrated Decision Support Group be responsible for any damages, direct, indirect, or consequential, arising from the use of this software.

Please keep in mind that we will be adding additional features (possibly including suggestions we get from users :). We have tried to use several of the data sets provided by EPA as well as a couple of datasets created as part of modeling projects. The sample datasets that we have tested for WASP5 include : lake.inp, pond1.inp, pond3seq.inp, river.inp, sedpond.inp, setpond3.inp, t-lake.inp, and toxriv1.inp.


U.S. Department of the Interior

United States Environmental Protection Agency