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Ballard Natural Drainage


Ballard Roadside Raingarden

Project Updates

Roadside Raingarden Locations Identified

Thanks to everyone who attended the September walk and talk events. Your input will help to make sure we design and build the best project possible. After a year of door-to-door visits, public meetings, surveys, emails and phone calls, we have identified the preferred locations for natural drainage. Based on input through September 2013, these are the proposed locations for roadside raingardens (pdf).

Through 2014, we will continue to gather your input about the design, including specific locations for rain gardens, access points to your home, preferences for plants, and other design issues. Construction will not begin before spring 2015.

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How natural drainage filters pollutants (Sightline article)

Ballard tent

Walk and Talk on Your Block – September 28-29, 2013

We walked around with residents of these blocks in September to gain specific information about trees, plantings, parking concerns and other important information.

Summer 2013

Over the summer, we’ve visited Ballard neighbors several times door-to-door to gather input from residents on these blocks. We’ve heard about trees and plantings, parking concerns, and many other things important to residents. Thanks to everyone who has taken the time to share information with us. The project team is receiving valuable updates every week from Ballard residents and it’s helping us to develop options that address resident concerns.

Third Public Meeting – June 5, 2013

If you couldn’t make it to the meeting, take a look at the information presented about the project:

View the presentation (pdf)

Review the display boards (pdf)

Second Public Meeting – Feb. 12, 2013

If you couldn’t make it to the meeting, please take a look at the display boards (pdf).

See the timeline for the technical analysis and public involvement process (pdf).

See the results of the December 2012 survey (pdf).

First Public Meeting– Oct. 2, 2012

View the October 2 presentation (pdf).

Read the questions and comments from the meeting (pdf).

View the display boards from the meeting (pdf).

Project History

The project to construct natural drainage (roadside raingardens) began in 2009. Drainage swales were installed in the public right-of-way across 10 city blocks between NW 65th Street and NW 80th Street and 28th Avenue NW and 31st Avenue NW in Ballard. See the project map (pdf).

The rain gardens are designed with soils and densely planted vegetation to infiltrate and filter stormwater flowing from the roadway, while providing attractive landscaping. Rain gardens are located within existing planting strips, and, in some cases, may extend slightly into roadways.

If you live in Ballard and would like to explore the possibility of having a roadside rain garden installed by the city, please send your name, address, phone number and email address to the project manager at

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