Surface Water Management

What We Do


Surface water staff work to protect our local streams through storm system inspection, maintenance, construction oversight, stream monitoring, and education and outreach opportunities to foster healthy watershed stewardship. Learn how you can help.

Program Updates


Surface Water Design Manual updated Nov. 1, 2017


In response to flooding within the City of Kenmore, Chapter 4 of the Bothell Standards has been revised to require a Type 3 downstream analysis and Level 3 flow control for all projects draining to the Little Swamp Creek basin. Learn more and view the updated manual.

Report a Spill


Let us know right away if you see a spill so we can try to contain it before it reaches any of our storm drains or local streams. Report a spill.

Spill Hotline (PNG)

Report a Drainage Issue


Submit an online form to tell us about your drainage concern. If it's an emergency, call 911.

Sign up for Surface Water news and alerts


Learn about upcoming events, volunteer opportunities, and projects we're working on. Sign up!
Values lighter colors (PNG)