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For questions about the Wastewater Treatment Division Web site, please send an e-mail message or contact us at:

King Street Center
201 S. Jackson St., Suite 505
Seattle, WA 98104-3855
Phone: 206-684-1280
Fax: 206-684-1741
Telecommunication device for the deaf (TTY): 711

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Puget Sound shoreline next to the West Point Treatment Plant, Seattle

Densmore stormwater system improvement project

Project map
Project map. Click map to enlarge view. Also available as PDF file.

 View looking south along Fourth Avenue N.E. towards Lake Union (Ship Canal Bridge on left). Photo taken from the Burke-Gilman Trail.
Project Location.
View looking south along Fourth Avenue N.E. towards Lake Union (Ship Canal Bridge on left). Photo taken from the Burke-Gilman Trail.
Click photo to enlarge view.

Completed fall 2007

To improve stormwater control and protect the environment, King County installed a stormwater vault, and a ventilation pipe and stack along Fourth Avenue N.E. near the Ship Canal (I-5) bridge in Seattle.

The vault and ventilation add capacity to the local stormwater system and reduce potential street flooding during large storms. An existing manhole was also upgraded in the public access area across Northeast Northlake Way.

Project schedule

  • Construction start: April 2007
  • Construction end: October 2007

For more information