WWHM2012 is an updated version of WWHM that includes several new elements related to low impact development (LID). You can find a brief summary of the updates at www.ecy.wa.gov/programs/wq/stormwater/wwhmtraining/summary2012updates.html.
To install WWHM2012, download and install first the "WWHM Program" file, then the "Map Data" file (below).
WWHM2012 will be updated as we receive comments and make improvements.
Ecology maintains a page of most revisions, past and present, of both the WWHM2012 program and the map data.
Join the WWHM email listserv for news, including new version releases. You can also check back here for periodic updates, or review WWHM2012 versions to track changes to the program over time. Finally, Clear Creek Solutions maintains a change log that documents the changes made with each release.
Please submit your comments to:
Comments may include:
The element your comment relates to
Your concern and rationale
Your suggested improvement or alternative approach
Screen shots related to your concern (error messages, data screen)
A copy of your .whm project file
Ecology recently offered trainings on WWHM 2012.
You can download the presentation and the WWHM examples.
For information on training classes on WWHM 2012 please contact
Dan Morris at AGC Education
Foundation at 206-284-4500. You may also go to their
website and navigate to
find and register for WWHM 2012 training classes.
Please make sure you include your email address. If you have any questions, please contact Foroozan Labib.
Ecology continues to support the use of WWHM3 for those who choose to continue to use it. It is up to the individual jurisdiction to determine the model that is to be used. Check with your jurisdiction to ensure that you are using an accepted model.
Download the current version of WWHM3 and any updates.
If you have questions about WWHM, please contact:
Department of Ecology
Water Quality Program
Ecology's Privacy Notice
Copyright © Washington State Department of Ecology. See http://www.ecy.wa.gov/copyright.htm