What is this Project?

This project increases system capacity to deliver high-quality drinking water from the Clackamas River to the communities of Lake Oswego and Tigard. Together these two communities can secure long-term access to clean, safe water for less than it would cost them to do it alone. Learn more...

Project News

Friday - April 11, 2014

Pipeline Construction Update - Lake Oswego

Pipeline installation along Douglas Circle

This update includes construction work in the following areas. Scroll down for specific information on each

  • Lanewood Street
  • Douglas Circle
  • Twin Fir Road
  • Upper Drive
  • Chandler Road
  • Iron Mountain Boulevard
  • B Ave

For the most up to date information on construction and road closures, please visit work underway, call the
hotline on 503-697-6502 or contact us.


Friday - April 11, 2014

Water Treatment Plant Construction Update

Tying rebar and preparing for a concrete pour in the gravity thickener

The auger cast drill rig is continuing to drill piles for all new structures on site, including the mechanical dewatering building and electrical building - over half of the 1,100 auger cast piles have been installed to date!

Last week, work started on backfilling the access ramps into the south side of the clearwell near Mapleton Drive. The backfilling activity requires loaders to pick up and place gravel and rock, and then use a rolling vibratory compactor to compress the fill and gravel. The compaction in this area, and the northeast of the site close to the demolished lagoons will continue intermittently over the next few weeks. Form work and concrete pouring will also continue on-site over the next few weeks, for the clearwell and ballasted flocculation columns, walls and suspended roof.

Neighbors can expect some noise and potential vibration during the fill placement and compaction, auger cast drilling and concrete sandblasting, depending on locations or personal sensitivities. Truck traffic will continue during concrete and grout pouring for the auger cast piles and new foundations.

Work hours are Monday to Friday from 7:00 a.m. to 7:00 p.m. and Saturdays, from 9:00 a.m. to 5:00 p.m. There will be no work on Saturday, April 26.

For more detail about what activities are happening on site please see the table below.

We apologize for the inconvenience construction may cause and thank you for your patience as work progresses.

For more information, please contact us or call the hotline at 503-697-6502.

Construction Tour Reminder

The Partnership holds free WTP construction tours on the fourth Thursday of each month at 10:00 a.m. The next tour will take place on April 24. Space is limited so please sign-up in advance to register a spot by contacting us, calling the hotline or in person at the bi-monthly meetings.


Wednesday - April 9, 2014

Plant visit - Walk 4 Water

L to R: Kari Duncan, water treatment plant manager; Gary Mittlestaedt, Water Africa, Lake Oswego; Sebastian Kunda, program manager from World Vision Zambia, Africa; Tom Lebo, treatment plant construction manager, Brown and Caldwell

Some very special guests joined Partnership and water treatment plant staff at the water treatment plant in West Linn on Tuesday. Sebastian Kunda, a technical advisor and program manager from World Vision Zambia, Africa, and Gary Mittelstaedt, who is co-hosting Sebastian’s trip to Lake Oswego for the Walk 4 Water event on Saturday, came for a tour.


Monday - April 7, 2014

Night Work in Lake Oswego

A geotech drill working in the public right of way

Starting next week and off and on through May, a crew will be working along the proposed water pipeline route that runs along portions of McVey Avenue (from State Street to the Lake Corp. Dam), State Street (B Avenue to the railroad tracks) and through the Oswego Village Shopping Center (Albertsons). They will be digging small holes in the right of way (or parking lot) to locate utilities in the area and testing soils.  This is to ensure that the proposed route has no conflicts with existing utilities and is designed with adequate support.

Work will occur during nighttime hours between 8:00 p.m. – 5:00 a.m. There will be a single-lane closure along roads to accommodate equipment, but no total street closure. The road will be repaired as work progresses. Please watch for flaggers. Neighbors may hear noise from a drill rig or a vacuum truck during these operations. We apologize for any inconvenience this may cause and appreciate your understanding during this important pre-construction work.

To see a map of anticipated work, visit the All Work Underway page.

Monday - April 7, 2014

Neighborhood WTP Construction Update Meeting:

Next Meeting Tuesday 4/15 at 6:00 p.m.

The 15th bi-monthly water treatment plant neighborhood construction update meeting was held on Tuesday, April 1, at Burgerville in West Linn. Neighbors learned about upcoming construction and asked questions of the project team. All meeting materials are available on the project website under the ‘Past Public Meetings’ page here. A link to the April 1 meeting summary, including discussion and action items can be found here.

The next meeting will be held on Tuesday, April 15, at 6:00 p.m. in the downstairs restaurant area at Burgerville, 18350 Willamette Drive in West Linn. Please come along to keep updated on construction progress and find out about upcoming work. Coffee and cookies provided by Burgerville.

For more information, please contact the Project Hotline on 503-697-6502 or contact us.