Note to those planning to use MapShed in support of PaDEP-required Pollution Reduction Plans:

The latest versions of MapShed and the GWLF-E model that can be used to estimate loads for urban/MS4 areas for the purpose of developing Pollution Reduction Plans (PRPs) are not yet available for download on this website. Both of these should be available for download by mid- or late-October. Please check this site periodically for updates regarding these software tools. In the meantime, if you are having trouble running the current version of MapShed for analyses related to urban or MS4 areas, please contact Dr. Barry Evans at for technical assistance.

  If you have any questions about MapShed, please contact one of the following individuals:

For general distribution, use questions, or technical support issues contact contact:

Dr. Barry M. Evans

For program installation questions or errors, or technical support issues contact:

Kenneth J. Corradini

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