SWM Development


Business Hours
(425) 398-8900
After Hours
(206) 296-8100

The City Council has adopted policies, codes and standards necessary in order to promote the public health, safety and welfare of the City by providing for the comprehensive management of surface water and stormwater and erosion control, especially that which preserves and utilizes the many values of the City’s natural drainage system, including open space, fish and wildlife habitat, recreation, education and urban separation. These policies, codes and standards conduct programs to reduce flooding, erosion, and sedimentation, prevent and mitigate habitat loss, enhance groundwater recharge, and prevent water quality degradation through the implementation of comprehensive and thorough permit review, construction inspection, enforcement, and maintenance in order to promote the effectiveness of the requirements contained with the City’s surface water management programs.

The City Council also finds that elements of these policies, codes and standards fulfill certain requirements of the Western Washington Phase II Municipal Stormwater Permit, issued to the City by the Washington State Department of Ecology, pursuant to the Federal Water Pollution Control Act (33 U.S.C. Section 1251) and the State law governing water pollution control (Chapter 90.48 RCW). [Ord. 16-0428].  The City’s full Surface Water Runoff Policy can be found in Kenmore Municipal Code Chapter 13.35.


Design Standards

On December 31, 2016, the City adopted the 2016 King County Surface Water Design Manual and an Addendum to the manual, which defines how the requirements of this manual are to be implemented within the City of Kenmore.  Additional drainage design standards for roads can be found in Section 10 of the City of Kenmore 2016 Road Standards.  Links to those documents are below.

For additional resources pertaining to the King County Surface Water Design Manual or to access older editions, please visit King County's website for additional information.



Last updated: Wed, 02/14/2018 - 11:06am