Skip to Main Content View Text-Only

The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, Portland, OR 97204

More Contact Info

Parkrose Stormwater Project

Updated February 4, 2020Sign Up for emails

Environmental Services will soon begin construction of a stormwater management project in a portion of the Parkrose neighborhood. This project is part of a larger effort to improve water quality in the Columbia Slough. Currently, when it rains, stormwater flows over streets, picking up pollutants along the way. Then, the water flows into the City’s stormwater pipes which carry the polluted stormwater directly in to the Slough.

To clean and filter stormwater in the area before it flows into the Slough, this project will construct 10 underground injection control structures, 12 manholes with manufactured stormwater treatment systems, 22 sedimentation manholes, and two green streets. These new structures will improve water quality, help control stormwater runoff during heavy rain events, and protect the Columbia Slough.


Map of the Parkrose Stormwater Project

The construction boundary is NE Marx Street to NE Shaver Street between NE 116th Avenue and NE 122nd Avenue.

Construction Schedule

Our contractor, Landis & Landis Construction, is scheduled to begin construction the first week of March. The stormwater management improvements will have several phases, including phases of inactivity, and should be completed by spring 2021.

Work Hours (including night work on NE 122nd Avenue)

General construction hours will be from 7 a.m. to 6 p.m., Monday through Friday, with some Saturday construction as needed. To minimize traffic impacts, Environmental Services received a Noise Variance Permit to do night work that will be conducted along NE 122nd Avenue between NE Shaver Street and NE Marx Street. Night work will be from May 1 to September 30, 6 p.m. to 7 a.m., Monday through Friday.

Pre-Construction Activities

Prior to construction, you may see crews surveying, trimming trees to protect them from large equipment, inspecting pipe and manholes to verify their conditions, marking and relocating utilities, or other preconstruction activities. For more information, go to

What to Expect During Construction

You can expect the following activities and impacts during sewer construction:

  • Safety: Please keep children, pets, and vehicles clear of all construction activities and areas.
  • Work Hours: Except for approved night work on NE 122nd Avenue (see map insert), work hours will be 7 a.m. to 6 p.m. Monday through Friday, and the same hours on Saturday if needed.
  • Noise, Vibration, and Dust: Construction creates noise, vibration, and dust and disrupts normal neighborhood activity.
  • Traffic Delays: Local access will be provided, but you should expect traffic delays in and near the work area and delays getting to and from your driveway.
  • Parking Restrictions: On-street parking will be restricted in and near the work zones to create a safe work environment and to stage equipment and materials.
  • Equipment Storage: Some equipment and materials may be stored on the street overnight.
  • Maintained Service: Sewer, water, and other utilities will be maintained during construction.
  • Schedule Changes and Inactivity: Construction occurs in phases, and there may be periods of inactivity between phases. Schedule is subject to change due to many factors.

Frequently Asked Questions

What is a Green Street?

Green streets are rain gardens that collect stormwater runoff from streets and allow water to soak into the ground as soil and vegetation filter pollutants.

What will they do?

Currently when it rains, water flows from streets and sidewalks into the storm system that carries it directly to the Columbia Slough. The new green streets will collect and filter this polluted runoff before it enters the pipes or soaks into the ground to protect water quality in the Columbia Slough.

Who maintains these new rain gardens?

The city maintains green streets to ensure that they effectively manage stormwater. Portland has more than a thousand green streets across the city.

Where will the green streets be located?

Environmental Services locates green street planters where they will be most effective in collecting stormwater. The planters in this project will be curb extensions, extending into the on-street parking zone next to the curb.

Will there be a green street outside of your house?

Environmental Services will communicate with all adjacent property owners where proposed green streets will remove on-street parking spaces.

Stay Informed

  • Be part of the project email updates by sending an email to with “Parkrose” in the subject line.
  • Call Stefanus Gunawan with questions or comments at 503-823-5759.

Environmental Services has resources to help fund your ideas for planting trees and native plants in the households, businesses, non-profits, local schools and local places of worship that you are involved with.

Project ideas include, but are not limited to:

  • Planting trees in your yard or the public right of way and encouraging neighbors to join you
  • Installing a rain garden or native plants at a place of worship, business, non-profit or school
  • Removing pavement and replacing it with trees or plants
  • Engaging your community group in watershed education opportunities

To learn more about how we can fund your project, email Michelle Moulton at or call at 503-823-8193.

Underground Stormwater Management Structures

Learn more about Underground Stormwater Management Structures