Burien Washington

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New and Redevelopment - Stormwater Management
2009 King County Surface Water Design Manual
Burien's surface water features (the lakes, wetlands, streams, and Puget Sound) are a significant part of our natural beauty and rich heritage. Spawning salmon, meandering streams, and clean water are important natural resources which must be managed wisely to protect their value. With this in mind, Burien has adopted the King County 2009 Surface Water Design Manual.

This Surface Water Design Manual contains the requirements and standards for designing stormwater management systems in the City of Burien. As part of the permit approval process for certain types of permits for proposed projects, Burien requires the construction of surface water and storm water management systems to mitigate the impacts on natural and existing man-made drainage systems.

To purchase a manual from the King County DNR Water and Land Resources Division please call (206) 296-6519. For additional information, visit the Water and Land Resources Division Manual Website.

Note: The King County 2009 Surface Water Design Manual was adopted in February, 2010. Existing site conditions shall be assumed historic site conditions. Historic site conditions mean those that existed on the site prior to any development in the Puget Sound region (ref. BMC. 13.10.140). Historic site conditions shall be assumed to be forest cover.

Please direct your comments or questions to Heungkook Lim at (206) 248-5516, or .

Update on 2016 King County Surface Water Design Manual
By December 31, 2016, Burien is required to adopt a new stormwater design manual that is equivalent with the 2012 Dept of Ecology Stormwater Management Manual for Western Washington. Staff is proposing to adopt the 2016 King County Surface Water Design Manual this fall.

When adopted, the new manual will become effective on January 1, 2017, and will apply to all new development and redevelopment projects submitting applications for permits after that date. Vesting into the 2009 manual will be allowed for projects that have submitted complete permit applications prior to December 31, 2016.

The most significant change to the new King County manual is the addition of Low Impact Development (LID) BMPs (called Flow Control BMPs in the manual), which will be required for nearly all development projects within the City. These BMPs include facilities such as bioretention (AKA rain gardens), permeable pavements, dispersion, and onsite infiltration.

More information on the new King County manual is available here:
2016 King County Surface Water Design Manual

Also, the Summary of Changes from the 2009 manual to the current one is available here:
2016 Summary of Changes

400 SW 152nd St, Suite 300  /  Burien, WA 98166  /  Ph: (206) 241-4647  /  Fax: (206) 248-5539
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