The City of Lake Oswego is continuing to provide essential services. In addition, we're developing new programs to help support the community. Updates on business assistance, community resources, City services, and COVID-19 resources.

Posted on: Apr 1 2020 - 4:29pm

Sedimentation Ponds

The City of Lake Oswego owns and maintains 11 public Sedimentation Ponds.

  • The City cleans and maintains its ponds on a yearly basis. Some ponds may require additional annual maintenance.
  • Private Sedimentation Ponds are the responsibility of the Homeowner, HOA or Neighborhood Association to maintain. Please call a private company to perform maintenance on private ponds.