Stormwater Management Manual Update

2008 Stormwater Management ManualThe City of Portland has revised its Stormwater Management Manual. While the intent of the manual has stayed the same, it has been reorganized to make it easier to read and use.

A few highlights of the changes include an explanation of the manual's hierarchy for managing stormwater, new design details, all new forms and guidelines, and a new Presumptive Approach Calculator (PAC) to help determine the appropriate size for vegetated facilities.

The 2008 Manual requirements go into affect October 1, 2008. Until then, the development community will be able to use either the 2004 Manual or the 2008 Manual.

The manuals are available for free on CD. Printed 2008 Manuals are also available for $25 each. You can purchase a paper manual or pick up the free compact disc version at the Development Services Center, 1900 SW 4th Avenue in Portland. To get a free CD by mail, please call 503-823-7103.

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