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The Department of Ecology (Ecology) has updated its Stormwater Management Manual. As part of this update, Ecology has changed the flow control standard from a peak flow rate matching basis to a flow duration matching basis. To design flow control facilities and determine compliance with the flow duration standard, a continuous simulation hydrologic model is needed.
If you would like to add your name to a mailing list for future WWHM trainings/workshops, please send E-mail to Foroozan Labib
Please make sure you include your email address. If you have any questions, please contact Foroozan Labib.
The software to run the Western Washington Hydrology Model and the User's Manual is available online. You can learn on your own about continuous simulation hydrologic modeling and how WWHM works. You should have some familiarity with the existing methods (e.g., SBUH) for assessing the hydrologic impacts of developments and be able to use Windows-based software. Familiarity with PC-based spreadsheet software such as Excel is also helpful.
Download the current version of WWHM3 and any updates.
If you have questions about the WWHM, please contact:
Foroozan Labib
Environmental Engineer
Department of Ecology
Water Quality Program
(360) 407-6439
Copyright © Washington State Department of Ecology. See http://www.ecy.wa.gov/copyright.html.
