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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

Oaks Bottom Habitat Enhancement Project

With construction mostly complete, you can:

What’s left to do

  • A viewing platform will be constructed in winter 2019 - spring 2020.

What has been done

Between July and November 2018, The Bureau of Environmental Services together with Portland Parks & Recreation (PP&R) and the U.S. Army Corps of Engineers:

Oaks Bottom - Project Overview Map

  • Replaced a culvert with a larger passage to improve fish passage and the flow of water between the Willamette River and the Oaks Bottom Wildlife Refuge.
  • Excavated new channels and improved wetland habitat so young fish, including species listed as threatened or endangered, can use the calmer waters of the wetland to rest and find food.
  • Removed invasive vegetation, such as purple loosestrife, and plant native seed within the construction footprint.  Remaining plantings will be installed in February 2019.
  • Enhance opportunities for environmental education and interpretation of the refuge from the Springwater Trail with an overlook to observe nature.  A viewing platform will be constructed in 2019.

Project Contacts

BES CONTACT: Ronda Fast, 503-823-4921,

USACE CONTACT: Sarah Bennett, 503-808-4514,


Critter cameras reveal hidden world of Oaks Bottom wildlife

An insider look at wildlife at Oaks Bottom

Oaks Bottom Habitat Enhancement Project Overview

A detailed overview of the project