Lake Forest Park Reservoir Floating Cover Replacement

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Project map

Project Description

The Lake Forest Park Reservoir is located in the City of Lake Forest Park and is part of Seattle Public Utilities’ regional transmission system. The reservoir has a floating cover, which helps to protect the drinking water being held in the reservoir.

The current floating cover was installed in 2001, which was designed to last approximately 20 years. Due to increased maintenance and repair work needed to keep the floating cover operational, SPU developed a project to replace the cover with a new floating cover. 

This work will enable SPU to supply quality drinking water to people in the greater Seattle area. 


The Lake Forest Park Reservoir is located north of NE 195th St between 45th Ave NE and 47th Ave NE in the City of Lake Forest Park (project area map). All work will be performed within the reservoir site location.

What's Happening Now?

The design of the new floating cover is complete, and the project team is preparing for construction, which is expected to begin in Spring 2021.

SPU will share updates as we work to bring the contractor onboard and prepare for construction. In the meantime, please review the Project Fact Sheet for more information and signup for the project email list.

Community Benefits

When this construction project is complete, the new floating cover will provide the necessary protection from sunlight, dirt, leaves, and other contaminants to preserve water service and quality.

Anticipated Impacts

During construction, you can expect:

  • Crews are expected to work 8-10 hour days Monday through Friday with Saturday work likely to allow most of the work to be performed during the dry weather season.
  • General construction activities and noise.
  • The construction work will take place within the reservoir site.
  • No road closures are expected, but there will be increased construction traffic in the area with possible short, temporary traffic delays on nearby roads to accommodate equipment and materials moving in and out of the construction site.
  • This work will not impact water services to homes and businesses.

Community Engagement

The Lake Forest Park Reservoir Floating Cover Replacement project is preparing for construction to begin. If you are interested in receiving updates, please subscribe to the project email list.


Early 2021

  • Pre-construction meeting with contractor and initial construction outreach to community
  • Contractor will begin early site preparation activities as soon as late Feb
  • Cover installation is currently scheduled to begin in late May/early April

Mid 2021

  • The contractor will work to complete the reservoir cover installation to bring the reservoir back into operation by the end of 2021.
  • SPU will provide project updates, as needed, via the project website and email list.

Construction on this project is dependent on weather and other factors, and the start date and duration of work is subject to change.


Project Documents