10th Street Water System Upgrade Project

The City is planning improvements to its water system at the 10th Street Reservoir and Pump Station property located at the corner of 10th Street and C Avenue. This project includes removal of the water tank and replacement of the existing pump station.

The project is in the early design stage, and is expected to continue through fall 2019, with construction possibly starting in late 2019 and continuing through summer 2020.

Public meetings are expected to be held with neighbors to solicit feedback on design and architectural aspects of the new pump station in spring and summer 2019.

Project Background / Summary: 

In 2018, the City completed an update to its 2001 Water System Master Plan (2018 Plan). The 2018 Plan has identified a number of improvements, including modifications to its storage, pumping and distribution systems. Some of these improvements include:

  • Abandoning and removing the 10th Street Reservoir, an existing 1925-era, 0.5 million gallon steel water storage tank. The work also includes removal of the foundation, associated piping, and replacement of the existing 700 gallon per minute pump station. 
  • Designing and constructing a new connection from the water main at 9th Street and B Avenue, to the new pump station.
  • Designing, permitting and building a new water pump station on the property, and demolishing the existing pump station. The new pump station will be built to modern seismic resiliency standards.
  • Designing and constructing approximately 2,400 feet of new water pipelines to improve the pump station hydraulics and provide a new source of water to the pump station in place of the water tank.
Project Updates: 

September 5, 2019 - Preliminary Work Begins Week of Sept. 9

Preliminary work begins the week of September 9 for exploratory digging for utilities as part of the project. 

9th Street, between B Avenue and C Avenue, and C Avenue, between 9th Street and Country Club Road will close to all through traffic from 7 am - 4 pm for approximately one week. Local access will be maintained for residents within the closure area. 

This work is preparing the area for improvements to the water system. Major construction work is expected to start in late 2019 or early 2020. More information will be available as the project moves forward.

April 25, 2019 - Project Open House on May 13

Come along to the project Open House to learn about upgrades to the water system and give your input on key project details! 

Monday, May 13, 2019

New Thought Center for Spiritual Living
1040 C Ave, Lake Oswego, OR 97034

January 2, 2019 – Survey and Field Work at the 10th Street Reservoir and Pump Station Site

Neighbors may see design survey and geotechnical drilling at and near the reservoir site beginning this month. You may also notice tags placed on some trees along the street and at the reservoir property. These tags are used to identify the trees and should remain until the project is completed. These tags do not mean the trees are planned to be trimmed or removed. Thank you for your assistance.

January 18, 2019 – Tree Survey Beginning

Neighbors may see a consulting arborist conducting a tree survey of all existing trees within right-of-way within the project area and on the reservoir property.

10th Street
Lake Oswego,
Project Details
WO 275
Project Contact: 

Joel Komarek
Project Director

503-697-6588 or email


Related Meetings Attachments