Low Impact Development

Stormwater Management Requirements are Changing!

The City's stormwater management requirements are changing. These requirements will improve the health of our streams by adopting low impact development (LID) principles. Numerous policies in Redmond's Comprehensive Plan support the use of LID, and Redmond's Water Resources Strategic Plan, adopted in 2015, calls for the City to develop a "Low Impact Development (LID) approach...to support desired stormwater management strategies and as a required element of our NPDES permit."  In 2016, City staff will be revising the Redmond Municipal Code, the Redmond Zoning Code, and the Stormwater Technical Notebook.

As is required by the City’s NPDES stormwater permit, new standards will be adopted and apply to any project that is not vested before January 1, 2017.  Watch this page for updates about our process of revising code requirements and to learn more about LID in and around Redmond. Your participation in this process is welcomed.

Zoning and Municipal Code Amendments

The City is proposing updates to the Redmond Zoning Code and Redmond Municipal Code’s Clearing, Grading, and Stormwater Management Chapter.  

  • Most of the proposed zoning code changes are relatively minor —clarifications and changes to definitions. To see proposed changes: LID-related Purposed Zoning Code Amendments.
  • One recommended zoning code change may be of greater interest — a 5% set aside of the net buildable areas at development sites to ensure the space for small storms infiltration facilities. The set aside can be co-located in areas such as landscaping set asides, and may be reduced if justified by stormwater modeling. To see this requirement: 5% Set Aside Proposed Requirement.
  • To see the proposed Redmond Municipal Code changes: Draft Amendments RMC 15.24

Stormwater Technical Notebook Updates

The City is updating the Stormwater Technical Notebook (STN) based on the Department of Ecology’s 2012 Stormwater Management Manual for Western Washington (as amended in 2014.) To comply with our Phase II Western Washington Municipal Stormwater Permit (NPDES permit) adoption will occur by December 31, 2016.

More information on the provisions that will be updated will be made available in August 2016.

Contact Information

Redmond Zoning Code Amendments
Peter Holte -  425-556-2822

Redmond Municipal Code Amendments
Andy Rheaume - 425-556-2741

Stormwater Technical Notebook Updates
Steve Hitch, PE, Senior Stormwater Engineer - 425-556-2891 

Important Documents

October 13, 2015 - City Council Study Session PowerPoint: Bringing Low Impact Development to Redmond:  Video:  Study Session
February 17, 2016 - Low Impact Development Feasibility Determination
                             (Department Operational Policy)
February 2016 - 2016 Stormwater Code Updates Flyer
February 23 & March 1, 2016 - Redmond Stormwater Code Updates Presentation
April 20, 2016 - City Planning Commission Study Session PowerPoint: Low Impact Development Integration:  Video:  Planning Commission Study Session
April 25, 2016 - Webinar - Redmond Zoning Code Changes
June 8, 2016 - Planning Commission Public Hearing & Study Session
June 29, 2016 - Planning Commission Report on LID Zoning Code

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