Documents, Reports and Videos

This section provides up to date information on the project, a library of reports, upcoming opportunities for public involvement and related project information in an easy to read bullet format. Please check this section regularly to keep up to date on information about this important public works project.


  • Webisode #1 (April 24, 2009)
    An introduction to the LOIS project.
  • Webisode #2 (October 29, 2009)
    The Wet work begins: Pile and anchor installation
  • Webisode #3
    The Pipe Takes Center Stage
  • Webisode #4 (July 16, 2010)
    Gearing Up for Lake Down
  • Webisode #5 (March 24, 2011)
    Lake Down: Nearing the Home Stretch
  • Webisode #6
    LOIS: A Dirty Job But Someone Had to Do It.
Other videos
  • LOIS Overview
    An overview of construction plans and the need to replace Lake Oswego's aging sewer line inside Oswego Lake.
  • Kelok Construction - Locating Laterals (May 6, 2009)
    How the construction team located the laterals that lead to homes along Kelok Road.
  • Pumping Solution Removes Excess Water (February 27, 2009)
    Contractors remove excess ground water to facilitate the installation of a manhole at Maple Circle. Watch the video to learn more about the temporary system that filtered and discharged the water.
  • Community Television Broadcast of LOIS Project (January 15, 2009)
    A Community Closeup feature from Tualatin Valley Community Television featuring Joel Komarek and Jane Heisler.
  • August Construction Update (August 31, 2009)
    A review of the work occuring on the lake during the summer of 2009 and informaiton about what to expect in the months to come.

Informational Materials

Regulatory Updates

On February 8, 2007 the City Council adopted resolution 07-09 authorizing the mayor to sign a Mutual Agreement and Order (MAO) with the Oregon Department of Environmental Quality. MAO document [2.5 mb]


  • American Water Works Journal, July 2011, "A Snake in the Lake - An innovative pipeline design", by Patrick Grandelli and Jon Holldand (PDF 620kb)
  • The Oregonian, October 4, 2010, "Emergency workers train for mud rescues on Oswego Lake", by Rick Bella
  •, October 1, 2010, "Deer and worker stuck in Oswego Lake", by Teresa Blackman
  •, October 1, 2010 "Muddy Oswego Lake worries firefighters", staff reporter
  • The Oregonian, October 1, 2010, "Drained Oswego Lake poses a muddy danger to wandering children", by Rick Bella
  • The Lake Oswego Review, Sept. 9, 2010, "Boats depart Oswego Lake as levels begin to go down," by Cliff Newell
  • The Oregonian, Sept. 8, 2010, "Lake Oswego approves $35 million bond for sewer pipe project", by Nicole Dungca
  •, Sept. 8, 2010, "Lake Oswego drained for sewer work", by Michael Rollins
  • Daily Journal of Commerce, Sept. 7, 2010, "Oswego Lake drained for sewer work, by David Savickas
  • The Lake Oswego Review, Sept. 2, 2010, "Down, down, down," by Cliff Newell
  • Portland Oregonian, August 27, 2010, "Oswego Lake set to begin slowly draining on Sept. 5 for sewer project work," by Yuxing Zheng
  • Portland Oregonian, August 5, 2010, "Lake Oswego to issue up to $40 million in bonds to pay for sewer project," by Yuxing Zheng
  • Daily Journal of Commerce, July 30, 2010 "Oswego Lake to drain for sewer work," by Daniel Savickas
  • The Lake Oswego Review, July 29, 2010, "Sewer project will make Oswego Lake disappear - briefly," by Cliff Newell.
  • Materials Performance Magazine, June 2010, "Underwater Interceptor Sewer System Uses Cathodic Protection to Preserve Support Piles."

Predesign Information

Return to the City of Lake Oswego website