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Submarine Outfall Construction

Thank you to the community

After years of planning and study, the Midway Sewer District has finally completed the last portion of its new outfall.

We would like to thank the community, the Des Moines Marina, and the Parks Department for all their patience and cooperation.

Use of the new outfall will free up the old outfall for the benefit of Des Moines Creek, preventing flooding and erosion.

 

Why did we do this....

The new outfall was needed to prevent treated effluent from overflowing into Des Moines Creek during major storm events and to accommodate increasing demand.

Once construction of the new outfall was complete, the District allowed the Des Moines Creek Basin Committee to use the old outfall.  They plan to use that pipeline as a creek high flow bypass to remove some of the peak flow from the Des Moines Creek and thereby help prevent flooding, erosion and damage to the stream bed environment.  

For more information on the joint efforts of Midway Sewer District and the Des Moines Creek Basin Committee, please see the May 3, 2007 press release.

Read an article from King County Executive Ron Sims regarding the Des Moines Creek Basin Committee and their project from March 2004.

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Overview photo of Submarine Outfall Project

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Photo Gallery

 

Press releases:

16 May 2007

New 48" sewer outfall construction set to begin in Des Moines Beach Park this June
Click <here> to view a .pdf of the Press Release.

03 May 2007

Midway Sewer District transferred ownership of pipeline to Des Moines Creek Basin Committee
Click <here> to view a .pdf of the Press Release.

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